7 changed files with 536 additions and 1 deletions
@ -0,0 +1,9 @@ |
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MIT License |
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Copyright (c) <year> <copyright holders> |
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Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: |
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The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. |
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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@ -1,3 +1,3 @@ |
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# common_calc |
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|
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原有 gitea 仓库损坏重建 |
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通用计算模块 |
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@ -0,0 +1,109 @@ |
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package common_calc |
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|
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import ( |
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"github.com/stretchr/testify/assert" |
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"log" |
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"math" |
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"testing" |
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) |
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|
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func Test_formulaTemplate_demo1(t *testing.T) { |
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//公式表达式计算
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formula := "(1.1*2 + 5/2)+ 2.4/2 + 0.8" |
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result := CalculateFormula(formula) |
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log.Printf("表达式 %s =>计算结果=%v", formula, result) |
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} |
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func Test_formulaTemplate_demo2(t *testing.T) { |
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//公式表达式计算
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formula := "2² + 0.8" |
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result := CalculateFormula(formula) |
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log.Printf("表达式 %s =>计算结果=%v", formula, result) |
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} |
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|
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func Test_formulaTemplate_demo3(t *testing.T) { |
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//公式表达式计算
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formula := "(1.1*2 + 5/2)+ 2.4/2² + 0.8" |
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result := CalculateFormula(formula) |
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log.Printf("表达式 %s =>计算结果=%v", formula, result) |
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} |
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|
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func Test_formulaTemplate_demo4(t *testing.T) { |
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//公式表达式计算 √
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formula := "√4 + 0.8" |
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result := CalculateFormula(formula) |
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log.Printf("表达式 %s =>计算结果=%v", formula, result) |
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} |
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|
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func Test_formulaTemplate_demo5(t *testing.T) { |
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//公式表达式计算 √
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formula := "√4+12 + 0.8" |
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result := CalculateFormula(formula) |
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log.Printf("表达式 %s =>计算结果=%v", formula, result) |
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} |
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func Test_formulaTemplate_demo6(t *testing.T) { |
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//公式表达式计算 √
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formula := "3*√4*5 + 0.8" |
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result := CalculateFormula(formula) |
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log.Printf("表达式 %s =>计算结果=%v", formula, result) |
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} |
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func Test_formulaTemplate_demo7(t *testing.T) { |
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//公式表达式计算 √
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formula := "3*√(2*8) + 0.8" |
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result := CalculateFormula(formula) |
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log.Printf("表达式 %s =>计算结果=%v", formula, result) |
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} |
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func Test_formulaTemplate_demo8(t *testing.T) { |
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//公式表达式计算 √
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formula := "2*[1+2]+0.5" |
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result := CalculateFormula(formula) |
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log.Printf("表达式 %s =>计算结果=%v", formula, result) |
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formula2 := "2*[3*(1+2)]+0.5" |
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result2 := CalculateFormula(formula2) |
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log.Printf("表达式 %s =>计算结果=%v", formula2, result2) |
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} |
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func Test_formulaTemplate_demo9(t *testing.T) { |
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formula := "sin(30*π/180)+cos(60*π/180)" |
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result := CalculateFormula(formula) |
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log.Printf("表达式 %s =>计算结果=%v", formula, result) |
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} |
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func Test_formulaTemplate_demo10(t *testing.T) { |
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formula := "[sin(30*π/180)+1]+sin(60*π/180)" |
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result := CalculateFormula(formula) |
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log.Printf("表达式 %s =>计算结果=%v", formula, result) |
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} |
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func Test_formulaTemplate_demo11(t *testing.T) { |
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formula := "[1+2³+3]" |
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result := CalculateFormula(formula) |
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log.Printf("表达式 %s =>计算结果=%v", formula, result) |
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} |
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func Test_formulaTemplate_demo12(t *testing.T) { |
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formula := "1+2*π" |
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result := CalculateFormula(formula) |
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assert.Equal(t, result, 1+2*math.Pi) |
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log.Printf("表达式 %s =>计算结果=%v", formula, result) |
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} |
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func Test_formulaTemplate_demo12_2(t *testing.T) { |
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formula := "1+2π" |
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result := CalculateFormula(formula) |
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assert.Equal(t, result, 1+2*math.Pi) |
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log.Printf("表达式 %s =>计算结果=%v", formula, result) |
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} |
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func Test_formulaTemplate_demo13(t *testing.T) { |
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formula := "3^2+1" |
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result := CalculateFormula(formula) |
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assert.Equal(t, result, 10.0) |
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log.Printf("表达式 %s =>计算结果=%v", formula, result) |
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} |
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// -0.37-0
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func Test_formulaTemplate_demo14(t *testing.T) { |
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formula := "-0.37-0" |
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result := CalculateFormula(formula) |
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assert.Equal(t, result, -0.37) |
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log.Printf("表达式 %s =>计算结果=%v", formula, result) |
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} |
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@ -0,0 +1,276 @@ |
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package common_calc |
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import ( |
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"errors" |
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"fmt" |
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"log" |
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"math" |
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"strconv" |
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"strings" |
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"unicode" |
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) |
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func CalculateFormula(formulaExpression string) float64 { |
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//log.Printf("计算 %s\n", formulaExpression)
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formulaExpression = strings.Replace(formulaExpression, " ", "", -1) |
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postfix, err := infix2ToPostfix(formulaExpression) |
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if err != nil { |
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log.Printf("计算异常[%s]=>%s", err.Error(), formulaExpression) |
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return -255 |
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} |
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return calculatePostfix(postfix) |
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} |
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func calculatePostfix(postfix []string) float64 { |
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stack := Stack{} |
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fixLen := len(postfix) |
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for i := 0; i < fixLen; i++ { |
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nextChar := postfix[i] |
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// 数字：直接压栈
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if _, err := strconv.ParseFloat(nextChar, 64); err == nil { |
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stack.Push(nextChar) |
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} else { |
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if nextChar == "π" { |
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stack.Push(fmt.Sprintf("%v", math.Pi)) |
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} else { |
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switch nextChar { |
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case "sin": |
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// 操作符：取出数字计算值，再将结果压栈
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num1, _ := strconv.ParseFloat(stack.Pop(), 64) |
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stack.Push(fmt.Sprintf("%v", math.Sin(num1))) |
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case "cos": |
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// 操作符：取出数字计算值，再将结果压栈
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num1, _ := strconv.ParseFloat(stack.Pop(), 64) |
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stack.Push(fmt.Sprintf("%v", math.Cos(num1))) |
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case "√": |
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// 操作符：取出数字计算值，再将结果压栈
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num1, _ := strconv.ParseFloat(stack.Pop(), 64) |
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stack.Push(fmt.Sprintf("%v", math.Sqrt(num1))) |
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case "²": |
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// 操作符：取出数字计算值，再将结果压栈
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num1, _ := strconv.ParseFloat(stack.Pop(), 64) |
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stack.Push(fmt.Sprintf("%v", math.Pow(num1, 2))) |
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case "³": |
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// 操作符：取出数字计算值，再将结果压栈
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num1, _ := strconv.ParseFloat(stack.Pop(), 64) |
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stack.Push(fmt.Sprintf("%v", math.Pow(num1, 3))) |
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case "+": |
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// 操作符：取出两个数字计算值，再将结果压栈
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num1, _ := strconv.ParseFloat(stack.Pop(), 64) |
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num2, _ := strconv.ParseFloat(stack.Pop(), 64) |
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stack.Push(fmt.Sprintf("%v", num2+num1)) |
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case "-": |
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num1, _ := strconv.ParseFloat(stack.Pop(), 64) |
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num2, _ := strconv.ParseFloat(stack.Pop(), 64) |
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stack.Push(fmt.Sprintf("%v", num2-num1)) |
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case "*": |
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num1, _ := strconv.ParseFloat(stack.Pop(), 64) |
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num2, _ := strconv.ParseFloat(stack.Pop(), 64) |
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stack.Push(fmt.Sprintf("%v", num2*num1)) |
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case "/": |
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num1, _ := strconv.ParseFloat(stack.Pop(), 64) |
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num2, _ := strconv.ParseFloat(stack.Pop(), 64) |
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stack.Push(fmt.Sprintf("%v", num2/num1)) |
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case "^": |
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// 操作符：取出两个数字计算值，再将结果压栈
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num2, _ := strconv.ParseFloat(stack.Pop(), 64) |
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num1, _ := strconv.ParseFloat(stack.Pop(), 64) |
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stack.Push(fmt.Sprintf("%v", math.Pow(num1, num2))) |
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} |
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} |
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} |
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} |
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result, _ := strconv.ParseFloat(stack.Top(), 64) |
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return result |
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} |
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// 中缀表达式转后缀表达式
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func infix2ToPostfix(expStr string) ([]string, error) { |
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stack := Stack{} |
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postfix := make([]string, 0) |
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//-1.1-2 => 0-1.1-2
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//-1.1*2+1 => 0-1.1*2+1
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if strings.HasPrefix(expStr, "-") { |
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expStr = fmt.Sprintf("0%s", expStr) |
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} |
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exp := []rune(expStr) |
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expLen := len(exp) |
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// 遍历整个表达式
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itemStr := "" |
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for i := 0; i < expLen; i++ { |
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char := string(exp[i]) |
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itemStr += char |
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switch itemStr { |
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case " ": |
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continue |
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case "[": |
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// 左括号直接入栈
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stack.Push("[") |
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case "]": |
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// 右括号则弹出元素直到遇到左括号
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for !stack.IsEmpty() { |
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preChar := stack.Top() |
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if preChar == "[" { |
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stack.Pop() // 弹出 "("
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break |
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} |
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postfix = append(postfix, preChar) |
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stack.Pop() |
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} |
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case "(": |
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// 左括号直接入栈
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stack.Push("(") |
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case ")": |
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// 右括号则弹出元素直到遇到左括号
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for !stack.IsEmpty() { |
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preChar := stack.Top() |
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if preChar == "(" { |
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stack.Pop() // 弹出 "("
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break |
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} |
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postfix = append(postfix, preChar) |
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stack.Pop() |
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} |
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case "π": |
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postfix = append(postfix, "π") |
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// 数字则直接输出
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case "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", ".": |
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j := i |
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digit := "" |
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for ; j < expLen && (unicode.IsDigit(exp[j]) || "." == string(exp[j])); j++ { |
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digit += string(exp[j]) |
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} |
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postfix = append(postfix, digit) |
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//支持 如2π这种写法
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if j < expLen && "π" == string(exp[j]) { |
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postfix = append(postfix, "π", "*") |
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j++ |
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} |
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i = j - 1 // i 向前跨越一个整数，由于执行了一步多余的 j++，需要减 1
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default: |
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//非操作符继续 拼接 用以支持多字符操作符如sin , cos
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if isOp := isOperator(itemStr); !isOp { |
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if i+1 == expLen || len(itemStr) > 5 { |
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return postfix, errors.New(fmt.Sprintf("不支持的无效的公式片段 %s", itemStr)) |
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} |
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if unicode.IsDigit(exp[i+1]) { |
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return postfix, errors.New(fmt.Sprintf("不支持的操作符 %s", itemStr)) |
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} |
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continue |
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} |
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// 操作符：遇到高优先级的运算符，不断弹出，直到遇见更低优先级运算符
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for !stack.IsEmpty() { |
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top := stack.Top() |
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if (top == "(" || top == "[") || isLower(top, itemStr) { |
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break |
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} |
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postfix = append(postfix, top) |
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stack.Pop() |
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} |
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// 低优先级的运算符入栈
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stack.Push(itemStr) |
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} |
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itemStr = "" |
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} |
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// 栈不空则全部输出
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for !stack.IsEmpty() { |
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postfix = append(postfix, stack.Pop()) |
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} |
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return postfix, nil |
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} |
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// (12.3+0.1)*2.0+2
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// 12.30.1+2.0*2+
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// 后缀式计算
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var operatorMap = []string{"√", "²", "³", "+", "-", "*", "/", "sin", "cos", "^"} |
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|
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// 优先级定义
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var operatorPriority = map[string]uint16{ |
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"+": 0, |
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"-": 0, |
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"*": 1, |
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"/": 1, |
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"√": 2, |
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"^": 6, |
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"sin": 7, |
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"cos": 7, |
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"²": 8, |
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"³": 8, |
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"[": 9, |
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"(": 10, |
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} |
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|
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func isOperator(op string) bool { |
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for _, s := range operatorMap { |
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if op == s { |
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return true |
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} |
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} |
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return false |
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} |
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// 比较运算符栈栈顶 top 和新运算符 newTop 的优先级高低
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func isLower(top string, newTop string) bool { |
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// 注意 a + b + c 的后缀表达式是 ab + c +，不是 abc + +
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Priority := operatorPriority[newTop] > operatorPriority[top] |
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return Priority |
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//switch top {
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//case "+", "-":
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// if newTop == "*" || newTop == "/" {
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// return true
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// }
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//case "(":
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// return true
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//}
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//return false
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} |
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type Stack struct { |
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data [100]string |
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top int |
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} |
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func (s *Stack) Push(d string) { |
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s.data[s.top] = d |
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s.top++ |
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} |
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func (s *Stack) Pop() (d string) { |
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if s.top == 0 { |
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//err = fmt.Errorf("stack is empty")
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} |
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s.top-- |
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d = s.data[s.top] |
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return |
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} |
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|
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func (s *Stack) Top() (d string) { |
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if s.top == 0 { |
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//err = fmt.Errorf("stack is empty")
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} |
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d = s.data[s.top-1] |
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return |
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} |
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|
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func (s *Stack) IsEmpty() bool { |
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return s.top == 0 |
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} |
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@ -0,0 +1,14 @@ |
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module gitea.anxinyun.cn/container/common_calc |
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|
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go 1.22.0 |
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|
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require ( |
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github.com/google/uuid v1.6.0 |
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github.com/stretchr/testify v1.9.0 |
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) |
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|
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require ( |
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github.com/davecgh/go-spew v1.1.1 // indirect |
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github.com/pmezard/go-difflib v1.0.0 // indirect |
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gopkg.in/yaml.v3 v3.0.1 // indirect |
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) |
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@ -0,0 +1,12 @@ |
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github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= |
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github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= |
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github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0= |
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github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo= |
|||
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM= |
|||
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= |
|||
github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg= |
|||
github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY= |
|||
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM= |
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gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= |
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gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA= |
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gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= |
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@ -0,0 +1,115 @@ |
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package common_calc |
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|
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import ( |
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"crypto/md5" |
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"github.com/google/uuid" |
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"log" |
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"math" |
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"sort" |
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"strconv" |
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) |
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|
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// Decimal float64 保留小数点后位数
|
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// value float64 浮点数
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// prec int 需保留小数点后的位数
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func Decimal(value float64, prec int) float64 { |
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value, _ = strconv.ParseFloat(strconv.FormatFloat(value, 'f', prec, 64), 64) |
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return value |
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} |
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|
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// 和scala 计算不一致 注意！
|
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func UUIDFromString(raw string) string { |
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bys := []byte(raw) |
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uid := uuid.NewMD5(uuid.Nil, bys) |
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log.Println(uid.String(), uid.Version()) |
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uid = uuid.NewMD5(uuid.NameSpaceURL, bys) |
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log.Println(uid.String(), uid.Version()) |
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uid = uuid.NewMD5(uuid.NameSpaceX500, bys) |
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log.Println(uid.String(), uid.Version()) |
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uid = uuid.NewMD5(uuid.NameSpaceDNS, bys) |
|||
log.Println(uid.String(), uid.Version()) |
|||
uid = uuid.NewMD5(uuid.NameSpaceOID, bys) |
|||
log.Println(uid.String(), uid.Version()) |
|||
|
|||
return uid.String() |
|||
|
|||
} |
|||
|
|||
func NameUUIDFromString(raw string) string { |
|||
sb := md5.Sum([]byte(raw)) |
|||
sb[6] &= 0x0f |
|||
sb[6] |= 0x30 |
|||
sb[8] &= 0x3f |
|||
sb[8] |= 0x80 |
|||
uid, err := uuid.FromBytes(sb[:]) |
|||
if err != nil { |
|||
log.Printf("uid 错误异常=%x", err.Error()) |
|||
} |
|||
return uid.String() |
|||
|
|||
} |
|||
|
|||
func MinMax(input []float64) (float64, float64) { |
|||
sort.Float64s(input) |
|||
return input[0], input[len(input)-1] |
|||
} |
|||
func AbsMax(input []float64) float64 { |
|||
sort.Float64s(input) |
|||
return max(math.Abs(input[0]), math.Abs(input[len(input)-1])) |
|||
} |
|||
func MeanSqrt(data []float64) float64 { |
|||
var sumSquares float64 |
|||
for _, v := range data { |
|||
sumSquares += v * v |
|||
} |
|||
return math.Sqrt(sumSquares / float64(len(data))) |
|||
} |
|||
|
|||
func GetAvg(dataArray []float64) float64 { |
|||
sum := 0.0 |
|||
for _, f := range dataArray { |
|||
sum += f |
|||
} |
|||
return sum / float64(len(dataArray)) |
|||
} |
|||
|
|||
func GetMedian(dataArray []float64) float64 { |
|||
n := len(dataArray) |
|||
sort.Float64s(dataArray) |
|||
if n%2 == 1 { |
|||
// 如果切片元素个数为奇数，中位数即为中间的元素
|
|||
return dataArray[n/2] |
|||
} else { |
|||
// 如果元素个数为偶数，中位数为中间两个元素的平均值
|
|||
return (dataArray[n/2-1] + dataArray[n/2]) / 2.0 |
|||
} |
|||
} |
|||
|
|||
// GetVariance calculates the unbiased population variance from the provided samples as an unsorted array.
|
|||
// On a dataset of size N, it will use an N-1 normalizer (Bessel's correction).
|
|||
// Returns NaN if data has less than two entries or if any entry is NaN.
|
|||
// 方差
|
|||
// Translated from Math.Net
|
|||
// Source code at https://github.com/mathnet/mathnet-numerics/blob/master/src/Numerics/Statistics/ArrayStatistics.cs
|
|||
func GetVariance(samples []float64) float64 { |
|||
if len(samples) <= 1 { |
|||
return math.NaN() |
|||
} |
|||
|
|||
var variance float64 |
|||
t := samples[0] |
|||
for i := 1; i < len(samples); i++ { |
|||
t += samples[i] |
|||
diff := float64((i+1)*int(samples[i])) - t |
|||
variance += (diff * diff) / (float64(i+1) * float64(i)) |
|||
} |
|||
|
|||
return variance / float64(len(samples)-1) |
|||
} |
|||
|
|||
func StandardDeviation(samples []float64) float64 { |
|||
return math.Sqrt(GetVariance(samples)) |
|||
} |
|||
func MeanStandardDeviation(samples []float64) (float64, float64) { |
|||
return GetAvg(samples), StandardDeviation(samples) |
|||
} |
|||
Loading…
Reference in new issue