[LeetCode] Longest Common Prefix
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Write a function to find the longest common prefix string amongst an array of strings.
class Solution {public: string longestCommonPrefix(vector<string> &strs) { // Start typing your C/C++ solution below // DO NOT write int main() function int n =strs.size();if ( n==0 ) return string();int minL=INT_MAX;for(int i=0;i<n;i++)minL=min(minL,(int)strs[i].length());int p=0;string ans;while(p<minL){char ch=strs[0][p];for(int i=0;i<n;i++)if (strs[i][p]!=ch)return ans;ans.push_back(ch); p++;}return ans; }};- LeetCode: Longest Common Prefix
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