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151.翻转字符串里的单词新增使用了移除元素思想的 Go 版本

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Lines changed: 49 additions & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -467,9 +467,57 @@ class Solution:`
`467`	`467`	`return " ".join(words)`
`468`	`468`	```
`469`	`469`
`470`		`-`
`471`	`470`	`Go:`
`472`	`471`
	`472`	`+版本一:`
	`473`	`+`
	`474`	+```go
	`475`	`+func reverseWords(s string) string {`
	`476`	`+ b := []byte(s)`
	`477`	`+`
	`478`	`+ // 移除前面、中间、后面存在的多余空格`
	`479`	`+ slow := 0`
	`480`	`+ for i := 0; i < len(b); i++ {`
	`481`	`+ if b[i] != ' ' {`
	`482`	`+ if slow != 0 {`
	`483`	`+ b[slow] = ' '`
	`484`	`+ slow++`
	`485`	`+ }`
	`486`	`+ for i < len(b) && b[i] != ' ' { // 复制逻辑`
	`487`	`+ b[slow] = b[i]`
	`488`	`+ slow++`
	`489`	`+ i++`
	`490`	`+ }`
	`491`	`+ }`
	`492`	`+ }`
	`493`	`+ b = b[0:slow]`
	`494`	`+`
	`495`	`+ // 翻转整个字符串`
	`496`	`+ reverse(b)`
	`497`	`+ // 翻转每个单词`
	`498`	`+ last := 0`
	`499`	`+ for i := 0; i <= len(b); i++ {`
	`500`	`+ if i == len(b) \|\| b[i] == ' ' {`
	`501`	`+ reverse(b[last:i])`
	`502`	`+ last = i + 1`
	`503`	`+ }`
	`504`	`+ }`
	`505`	`+ return string(b)`
	`506`	`+}`
	`507`	`+`
	`508`	`+func reverse(b []byte) {`
	`509`	`+ left := 0`
	`510`	`+ right := len(b) - 1`
	`511`	`+ for left < right {`
	`512`	`+ b[left], b[right] = b[right], b[left]`
	`513`	`+ left++`
	`514`	`+ right--`
	`515`	`+ }`
	`516`	`+}`
	`517`	+```
	`518`	`+`
	`519`	`+版本二:`
	`520`	`+`
`473`	`521`	```go
`474`	`522`	`import (`
`475`	`523`	`"fmt"`

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