Commit 157c9bc

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Merge pull request youngyangyang04#1125 from kekeboomboom/master

738.单调递增的数字 Java版本代码修改:对于09这样的判断可以不做,直接用String.valueOf方法就行

2 parents 98e4f19 + 66c3aab commit 157c9bcCopy full SHA for 157c9bc

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+10

-14

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+10

-14

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Lines changed: 10 additions & 14 deletions

Original file line number	Diff line number	Diff line change
`@@ -148,23 +148,19 @@ java版本1中创建了String数组,多次使用Integer.parseInt了方法,`
`148`	`148`	`版本2`
`149`	`149`	`class Solution {`
`150`	`150`	`public int monotoneIncreasingDigits(int n) {`
`151`		`- if (n==0)return0;`
`152`		`- char[] chars=Integer.toString(n).toCharArray();`
`153`		`- int start=Integer.MAX_VALUE;//start初始值设为最大值,这是为了防止当数字本身是单调递增时,没有一位数字需要改成9的情况`
`154`		`- for (int i=chars.length-1;i>0;i--){`
`155`		`- if (chars[i]<chars[i-1]){`
`156`		`- chars[i-1]--;`
`157`		`- start=i;`
	`151`	`+ String s =String.valueOf(n);`
	`152`	`+ char[] chars= s.toCharArray();`
	`153`	`+ int start= s.length();`
	`154`	`+ for (int i= s.length() -2; i >=0; i--){`
	`155`	`+ if (chars[i]>chars[i+1]){`
	`156`	`+ chars[i]--;`
	`157`	`+ start= i+1;`
`158`	`158`	`}`
`159`	`159`	`}`
`160`		`- StringBuilder res=new StringBuilder();`
`161`		`- for (int i=0;i<chars.length;i++){`
`162`		`- if (chars[i]=='0'&&i==0)continue;//防止出现09这样的情况`
`163`		`- if (i>=start){`
`164`		`- res.append('9');`
`165`		`- }else res.append(chars[i]);`
	`160`	`+ for (int i = start; i < s.length(); i++) {`
	`161`	`+ chars[i] = '9';`
`166`	`162`	`}`
`167`		`- return Integer.parseInt(res.toString());`
	`163`	`+ return Integer.parseInt(String.valueOf(chars));`
`168`	`164`	`}`
`169`	`165`	`}`
`170`	`166`	```

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