[leetcode 14]Longest Common Prfix
1 题目:
Write a function to find the longest common prefix string amongst an array of strings.
public String longestCommonPrefix(String[] strs) {
if(strs.length == 0) return "";
String string = strs[0];
int len = strs.length;
while(string.length()>0){
boolean isContain = true;
for(int i = 1; i < len; i++){
if(strs[i].startsWith(string)){
}else{
if(string.length() > 1)
string = string.substring(0,string.length()-1);
else{
return "";
}
isContain = false;
break;
}
}
if(isContain) return string;
}
return "";
}
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