leetcode Longest Common Prefix
2017-04-12 21:27
330 查看
找出单词的最长公共前缀
class Solution {
public:
string longestCommonPrefix(vector<string> &strs) {
int len=strs.size();
if(len==0)
return "";
int length=strs[0].size(),j;
for(int i=1;i<len;i++)
{
for(j=0;j<strs[i].size();j++)
{
if(j>=length||strs[i][j]!=strs[0][j])
break;
}
length=j;//length记录当前的最长公共前缀长度
}
return strs[0].substr(0,length);
}
};
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