2-3. Longest Common Prefix (LeetCode 14)

 

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 class Solution {
    public String longestCommonPrefix(String[] strs) {
        String answer = "";
        char tmp;
        for(int i=0 ; i<strs[0].length() ; i++){
            tmp = strs[0].charAt(i); 
            for(int j=0 ; j<strs.length ; j++){
                if(i >= strs[j].length()) return answer;
                if(tmp != strs[j].charAt(i) ) return answer;     
            }
        answer += tmp;
        }
        return answer;
    }
}

https://leetcode.com/problems/longest-common-prefix/

Longest Common Prefix - LeetCode