leetcode-Search a 2D Matrix(2014.2.23)
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class Solution {
public:
bool searchMatrix(vector<vector<int> > &matrix, int target) {
int m=matrix.size();
int n=matrix[0].size();
if(target<matrix[0][0]||target>matrix[m-1][n-1]) return false;
for(int i=0;i<m-1;i++){
if(target>=matrix[i][0]&&target<matrix[i+1][0]){
for(int j=0;j<n;j++){
if(target==matrix[i][j]) return true;
}
}
}
for(int j=0;j<n;j++){
if(target==matrix[m-1][j]) return true;
}
return false;
}
};
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