Leetcode-Problems/Longest Common Prefix at master · Sharanmax/Leetcode-Problems · GitHub

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//Completed 4/25/18 --
// Longest Common Prefix

class Solution {
    public String longestCommonPrefix(String[] strs) {

        if(strs.length == 0)
        {
            return "";
        }

        int spotShortestString = 0;
        int lengthShortestString = strs[0].length();

        for(int i = 0; i < strs.length; i++)
        {
            if(strs[i].length() < lengthShortestString)
            {
                spotShortestString = i;
                lengthShortestString = strs[i].length();
            }
        }

        int howManyCharacters = 0;

        for(int i = 0; i < lengthShortestString; i++)
        {
            for(int j = 0; j < strs.length; j++)
            {
                if(strs[j].charAt(i) != strs[spotShortestString].charAt(i))
                {
                    return strs[spotShortestString].substring(0, howManyCharacters);
                }
            }
            howManyCharacters++;
        }
        return strs[spotShortestString];
    }
}