标签:style color os io ar for div cti amp
题目:
Write a function to find the longest common prefix string amongst an array of strings.
解析:求字符串数组中所有数组的最长公共前缀,重点考察细节和边界条件,比如:
[] :输入字符串数组为空,要判断if (strs .size() == 0) return "";
[""]: 字符串数组里面只有一个空字符串等情况等等
class Solution {
public:
string longestCommonPrefix(vector <string> & strs) {
if (strs .size() == 0) return "";
string result;
int i, j; // i表示第i个字符串,j表示字符串的第j个字符
for (j = 0; ; j++){
for (i = 0; i<strs .size(); i++){
if (j >= strs [i].length() || strs[i][j] != strs[0][j])
break;
}
if (i<strs .size()) break;
result += strs[0][j];
}
return result;
}
};【leetcode】Longest Common Prefix
标签:style color os io ar for div cti amp
原文地址:http://blog.csdn.net/u013378502/article/details/38899353