Question

How to pad a string on the left in Go

Answer 1

package main

import (
    "fmt"
    "strings"
)

func padLeft(str string, totalLength int, padChar string) string {
    if len(str) >= totalLength {
        return str
    }
    padding := strings.Repeat(padChar, totalLength-len(str))
    
    return padding + str
}

func main() {
    fmt.Println(padLeft("Go", 5, "*")) 
}



/*
run:

***Go 

*/

 

70+ SQL courses for beginners and professionals

Answer 2

package main

import "fmt"

func main() {
    str := "Go"
    
    padded := fmt.Sprintf("%5s", str) // Pads with spaces to the left
    
    fmt.Println("'" + padded + "'")  
}



/*
run:

'   Go'

*/

 

70+ SQL courses for beginners and professionals

Answer 3

package main

import "fmt"

func main() {
    width := 5 // Dynamic Width
    str := "Go"
    
    padded := fmt.Sprintf("%*s", width, str)
    
    fmt.Println("'" + padded + "'")
}



/*
run:

'   Go'

*/

 

70+ SQL courses for beginners and professionals