interview-arithmetic/leetcode/剑指offer/左旋转字符串/main.go

package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
	"strings"
)

func main() {
	input := bufio.NewScanner(os.Stdin)
	var output string
	for input.Scan() {
		line := input.Text()

		values := strings.Split(line, " ")
		num, _ := strconv.Atoi(values[1])

		output = reverseLeftWords(values[0], num)
		fmt.Println(output)
	}
}

func reverseLeftWords(s string, n int) string {
	if len(s) <= n {
		return s
	}
	var prefix = s[0:n]
	return s[n:] + prefix
}