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87. Scramble String (java)

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	`1`	`+class Solution {`
	`2`	`+ public boolean isScramble(String s1, String s2) {`
	`3`	`+ if(s1.equals(s2)) return true;`
	`4`	`+ if(s1.length()!=s2.length()) return false;`
	`5`	`+ int len = s1.length();`
	`6`	`+ int[] count = new int[26];`
	`7`	`+ for(int i = 0; i < len; i++){`
	`8`	`+ count[s1.charAt(i) - 'a']++;`
	`9`	`+ count[s2.charAt(i) - 'a']--;`
	`10`	`+ }`
	`11`	`+ for(int item : count) if (item != 0) return false;`
	`12`	`+ for(int i = 1; i <= len - 1; i++){`
	`13`	`+ if(isScramble(s1.substring(0, i), s2.substring(0, i)) && isScramble(s1.substring(i), s2.substring(i)))`
	`14`	`+ return true;`
	`15`	`+ if (isScramble(s1.substring(0, i), s2.substring(len - i)) &&`
	`16`	`+ isScramble(s1.substring(i), s2.substring(0, len - i)))`
	`17`	`+ return true;`
	`18`	`+ }`
	`19`	`+ return false;`
	`20`	`+ }`
	`21`	`+}`

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