代码随想录算法训练营第九天 | 151、kama55

算法
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151. 翻转字符串里的单词

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package main

import (
    "strings"
)

func reverseWords(s string) string {
    words := strings.Fields(s)
    n := len(words)
    for i := 0; i < n/2; i++ {
        words[i], words[n-1-i] = words[n-1-i], words[i]
    }
    return strings.Join(words, " ")
}

kama55. 右旋转字符串

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package main

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

func main() {
    scanner := bufio.NewScanner(os.Stdin)
    scanner.Scan()
    kStr := scanner.Text()
    k, _ := strconv.Atoi(kStr)
    scanner.Scan()
    s := scanner.Text()

    n := len(s)
    if n == 0 {
        fmt.Println("")
        return
    }
    k = k % n
    rightPart := s[n-k:]
    leftPart := s[:n-k]
    fmt.Println(rightPart + leftPart)
}