Android CharSequence Search indexOfDifference(CharSequence cs1, CharSequence cs2)

Description

index Of Difference

License

Apache License

Declaration

public static int indexOfDifference(CharSequence cs1, CharSequence cs2) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

public class Main {
    private static final int INDEX_NOT_FOUND = -1;

    public static int indexOfDifference(CharSequence cs1, CharSequence cs2) {
        if (cs1 == cs2) {
            return INDEX_NOT_FOUND;
        }//  ww  w .  j  a v a 2  s. co  m
        if (cs1 == null || cs2 == null) {
            return 0;
        }
        int i;
        for (i = 0; i < cs1.length() && i < cs2.length(); ++i) {
            if (cs1.charAt(i) != cs2.charAt(i)) {
                break;
            }
        }
        if (i < cs2.length() || i < cs1.length()) {
            return i;
        }
        return INDEX_NOT_FOUND;
    }
}

Related

1. findCommonPrefixLength(CharSequence str1, CharSequence str2)
2. findCommonSuffixLength(CharSequence str1, CharSequence str2, int commonPrefixLength)