Longest Common Prefix

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public class Solution {    public String longestCommonPrefix(String[] strs){if (strs.length == 0 || strs == null)return "";for(int i = 0; i < strs[0].length(); i++){char ch = strs[0].charAt(i);for(int j = 1; j < strs.length; j++){if(strs[j].length() == i || strs[j].charAt(i) != ch)return strs[0].substring(0, i);}}return strs[0];}}



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