14. Longest Common Prefix

class Solution {
    public String longestCommonPrefix(String[] strs) {
        if(strs.length == 0) return "";
        StringBuilder sb = new StringBuilder("");
        for(int i = 0; i < strs[0].length(); i++) {
            for(int j = 1; j < strs.length; j++) {
                if(i < strs[j].length() && strs[0].charAt(i) == strs[j].charAt(i)) {
                    continue;
                }else {
                    return sb.toString();
                }
            }
            sb.append(strs[0].charAt(i));
        }
        return sb.toString();
    }
}