14.最长公共前缀
java
class Solution {
public String longestCommonPrefix(String[] strs) {
if(strs == null || strs.length == 0){
return "";
}
int length = strs[0].length();
int count = strs.length;
for(int i =0;i<length;i++){
char c = strs[0].charAt(i);
for(int j = 1;j<count;j++){
if(i == strs[j].length() || strs[j].charAt(i) != c){
return strs[0].substring(0,i);
}
}
}
return strs[0];
}
}