1544. Make The String Great #52

[Karthiks08]

class Solution {

public String makeGood(String s) {
    if(s.length()<=1)
        return s;
    int i=0, j=1;
    StringBuilder sb = new StringBuilder(s);
    while(j < sb.length() && sb.length() > 1) {
        if(Math.abs(sb.charAt(i) - sb.charAt(j)) == 32) {
            sb.deleteCharAt(i);
            sb.deleteCharAt(i);
            if(i>0)
                i = i-1;
            j = i+1;
            continue;
        }
        i++;j++;
    }
    return sb.toString();
}

}