Question

How to remove trailing nulls (0) from byte array in Go

Answer 1

package main

import (
	"fmt"
)

func removeTrailingNulls(data []byte) []byte {
	// Find the position of the last non-null byte
	lastNonNull := len(data) - 1
	
	for lastNonNull >= 0 && data[lastNonNull] == 0 {
		lastNonNull--
	}
	
	// Slice the array up to the last non-null byte
	return data[:lastNonNull + 1]
}

func main() {
	data := []byte{1, 2, 3, 0, 0, 0, 0}
	
	trimmedData := removeTrailingNulls(data)
	
	fmt.Println(trimmedData) 
}



/*
run:

[1 2 3]

*/

 

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