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00. 文字列の逆順

Last updated at Posted at 2019-11-27

00.文字列の逆順

文字列"stressed"の文字を逆に(末尾から先頭に向かって)並べた文字列を得よ.

###Go

package main

import_ "fmt"

func main() {
	var data string = "stressed"
	var reverse string

	// 1.ループ
	for i := len(data) - 1; i >= 0; i-- {
		reverse += string(data[i])
	}

	fmt.Println(reverse)
}

###python


# -*- coding: utf-8 -*-
data = "stressed"
reverse = ""

#   1.逆カウントのループ
i = len(data) - 1
while i >= 0:
    reverse += data[i]
    i-=1
print(reverse)

#   2.range->reversed
reverse = ""
for i in reversed(range(len(data))):
    reverse += data[i]
print(reverse)

#   3.reversed->join
print(''.join(reversed(data)))

#   4.スライス
print(data[::-1])

###Javascript

var data = "stressed";
var reverse = ""

//  1.逆カウントのループ
for (var i = data.length - 1; i >= 0; i--) {
    reverse += data[i];
}
console.log(reverse);

//  2.split->reverse->join
console.debug(data.split("").reverse().join(""));

まとめ

goは日本語非対応。
問題ページとトップページ分割。

トップ

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