LeetCode Longest Common Prefix
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题目
Write a function to findthe longest common prefix string amongst an array of strings.
求最长公共前缀,从头开始扫,
注意数组为空,注意到字符串尾(尤其是同时到尾)
代码:
class Solution {public: string longestCommonPrefix(vector<string> &strs) { int size=strs.size();string ans="";if(size==0)return ans;if(size==1)return strs[0];int i=size,j=0;while(i>=size){for(i=1;i<size;i++){if(strs[i][j]!=strs[0][j]||strs[i][j]=='\0')break;}if(i>=size)ans+=strs[0][j++];}return ans; }};
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