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-rw-r--r--other/search_2d_matrix2.cpp20
1 files changed, 20 insertions, 0 deletions
diff --git a/other/search_2d_matrix2.cpp b/other/search_2d_matrix2.cpp
new file mode 100644
index 0000000..9834431
--- /dev/null
+++ b/other/search_2d_matrix2.cpp
@@ -0,0 +1,20 @@
+#include "leetcode.h"
+
+class Solution {
+public:
+ bool searchMatrix(vector<vector<int>> &matrix, int target) {
+ int m = matrix.size(), n = matrix[0].size();
+ if (m == 0)
+ return false;
+ int i = 0, j = n - 1;
+ while (i < m && j >= 0) {
+ if (matrix[i][j] == target)
+ return true;
+ else if (matrix[i][j] > target)
+ j--;
+ else
+ i++;
+ }
+ return false;
+ }
+};