PROBLEM DESCRIPTION
Given two strings A and B consisting of lowercase english characters. Find the characters that are not common in the two strings.
Return the string in sorted order.
SOLUTION
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class Solution
{
String UncommonChars(String A, String B)
{
int[] f1 = new int[26];
for(int i=0; i<A.length(); i++){
f1[A.charAt(i)-'a'] = 1;
}
int[] f2 = new int[26];
for(int i=0; i<B.length(); i++){
f2[B.charAt(i)-'a'] = 1;
}
StringBuffer sb = new StringBuffer();
for(int i=0; i<26; i++){
if((f1[i]^f2[i]) == 1){
sb.append(String.valueOf((char)(i+'a')));
}
}
return sb.toString().equals("")?"-1":sb.toString();
}
}