Commit c20684f

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Merge pull request youngyangyang04#850 from BarneyShi/Update-Jianzhi-58-JS

剑指Offer 58 - 不使用额外空间的JS解法

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Lines changed: 8 additions & 11 deletions

Original file line number	Diff line number	Diff line change
`@@ -200,17 +200,14 @@ func reverse(b []byte, left, right int){`
`200`	`200`	`JavaScript:`
`201`	`201`
`202`	`202`	```javascript
`203`		`-var reverseLeftWords = function (s, n) {`
`204`		`- const reverse = (str, left, right) => {`
`205`		`- let strArr = str.split("");`
`206`		`- for (; left < right; left++, right--) {`
`207`		`- [strArr[left], strArr[right]] = [strArr[right], strArr[left]];`
`208`		`- }`
`209`		`- return strArr.join("");`
`210`		`- }`
`211`		`- s = reverse(s, 0, n - 1);`
`212`		`- s = reverse(s, n, s.length - 1);`
`213`		`- return reverse(s, 0, s.length - 1);`
	`203`	`+var reverseLeftWords = function(s, n) {`
	`204`	`+ const length = s.length;`
	`205`	`+ let i = 0;`
	`206`	`+ while (i < length - n) {`
	`207`	`+ s = s[length - 1] + s;`
	`208`	`+ i++;`
	`209`	`+ }`
	`210`	`+ return s.slice(0, length);`
`214`	`211`	`};`
`215`	`212`	```
`216`	`213`

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