[js] 第133天 写一个方法，将字符串中的单词倒转后输出，如：my love -> ym evol

[haizhilin2013]

第133天 写一个方法，将字符串中的单词倒转后输出，如：my love -> ym evol

[qhdxwdm]

(text)=>{ let arr= [...text]; return arr.reverse().join(''); }

[chenweihuan]

let b = "my love"
function fn(b){
	return b.split(" ").map(val => val.split("").reverse().join("")).join(" ")
}
console.log(fn(b)) //ym evol

[NicholasBaiYa]

let wordReversal = str => 
    str
        .split(' ')
        .map(e => e.split('').reverse().join(''))
        .join(' ')

[LinStan]

let str = 'my love'
str.split(' ').map((v)=>{v.split('').reverse().join('')}).join(' ')

[Konata9]

const reverseStr = (str) =>
  str
    ? str
        .split("")
        .reverse()
        .join("")
    : str;


console.log(reverseStr('my love'));
console.log(reverseStr('abc cba abc'));

[Clearives]

const reverseStr = str => {
  if (typeof str !== "string") throw new Error("The argument must be a string");
  return str
    .split(" ")
    .map(v =>
      v
        .split("")
        .reverse()
        .join("")
    )
    .join(" ");
};

console.log(reverseStr("my love"));
console.log(reverseStr("js upupup"));
console.log(reverseStr(123));

[whitesky1225]

const reverseStr = (str) =>
  str
    ? str
        .split("")
        .reverse()
        .join("")
    : str;


console.log(reverseStr('my love'));
console.log(reverseStr('abc cba abc'));

我最先想到的也是用Array.reverse()

[xxf1996]

function reverseStr (str) {
  return str.split('').reverse().join('')
}

[ajycc20]

return str.split('').reverse().join('').split(' ').reverse().join(' ')

[viccowang]

function reverseString (str) {
   if( typeof str !== "string") throw new Error('The param must be a string.')
    return str.split(' ')
      .map( splitStr => splitStr.split('').reverse().join('') )
      .join(' ')
}

console.log( reverseString('my love') )
console.log( reverseString('hello world') )
console.log( reverseString(123) )

[Shaman-HH]

function reverseString(str) {
  if (typeof str !== 'string') throw new Error('The param must be string.');
  return str.split(' ')
    .map(el => Array.from(el).reverse().join(''))
    .join(' ')
}

// test
console.log(reverseString('my love'));
console.log(reverseString('my '));
console.log(reverseString({a: 1}));
console.log(reverseString(123));

[5SSS]

能不能不用reverse🙃

function reverseString (string) {
	if (typeof string !== 'string') {
		return 'hello world!'
	}
	string = string.split('')
	let length = string.length
	for (let i = 0, len = Math.floor(length / 2); i < len; i++) {
		let t = string[i]
		string[i] = string[length - i - 1]
		string[length - i - 1] = t
	}
	return string.join('')
}

[amusiq]

(text)=>{ let arr= [...text]; return arr.reverse().join(''); }

你似乎没看清楚题目意思

[cyj1209]

`
function reverseString(str) {
let fast = 0;
let slow = 0;
let res = "";
for (; fast < str.length; fast++) {
if (str[fast] === " ") {
let t = "";
while (slow < fast) {
t = str[slow] + t;
slow++;
}
t += ' ';
slow++ ;
res += t;
}
}
let t = "";
while (slow < fast) {
t = str[slow] + t;
slow++;
}
res += t;
return res;
}

console.log(reverseString("my love"));
`
双指针扫描字符串

[1684838553]

function reverseStr(str){
    return str.split(' ').map(item => item.split('').reverse().join('')).join(' ')
}

[xiaoqiangz]

str1.split(' ').map(item => item.split('').reverse().join('')).join(' ')