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replace index in string golang

Cruel Capybara answered on December 29, 2022 Popularity 5/10 Helpfulness 4/10

answer replace index in string golang

replace index in string golang

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package main
import (
    "testing"
)

func replaceAtIndex1(str string, replacement rune, index int) string {
    out := []rune(str)
    out[index] = replacement
    return string(out)
}

func replaceAtIndex2(str string, replacement rune, index int) string {
    return str[:index] + string(replacement) + str[index+1:]
}

func generateString(n int) string{
    s := ""
    for i := 0; i < n; i++{
        s += "a"
    }
    return s
}

func BenchmarkSmall1(b *testing.B) {
    n := 10
    str, index, replacement := generateString(n), n / 2, 'B'

    b.ResetTimer()
    for i := 0; i < b.N; i++ {
        replaceAtIndex1(str, replacement, index)
    }
}

func BenchmarkSmall2(b *testing.B) {
    n := 10
    str, index, replacement := generateString(n), n / 2, 'B'

    b.ResetTimer()
    for i := 0; i < b.N; i++ {
        replaceAtIndex2(str, replacement, index)
    }
}

func BenchmarkMedium1(b *testing.B) {
    n := 100
    str, index, replacement := generateString(n), n / 2, 'B'

    b.ResetTimer()
    for i := 0; i < b.N; i++ {
        replaceAtIndex1(str, replacement, index)
    }
}

func BenchmarkMedium2(b *testing.B) {
    n := 100
    str, index, replacement := generateString(n), n / 2, 'B'

    b.ResetTimer()
    for i := 0; i < b.N; i++ {
        replaceAtIndex2(str, replacement, index)
    }
}

func BenchmarkBig1(b *testing.B) {
    n := 10000
    str, index, replacement := generateString(n), n / 2, 'B'

    b.ResetTimer()
    for i := 0; i < b.N; i++ {
        replaceAtIndex1(str, replacement, index)
    }
}

func BenchmarkBig2(b *testing.B) {
    n := 10000
    str, index, replacement := generateString(n), n / 2, 'B'

    b.ResetTimer()
    for i := 0; i < b.N; i++ {
        replaceAtIndex2(str, replacement, index)
    }
}

func main(){}

Popularity 5/10 Helpfulness 4/10 Language go

Source: stackoverflow.com

Tags: go replace string

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Contributed on Dec 29 2022

Cruel Capybara

0 Answers Avg Quality 2/10

replace index in string golang

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replace index in string golang

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