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Author: assassint2017

Delete Columns to Make Sorted/Delete_Columns_to_Make_Sorted.cpp

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+// Runtime: 60 ms, faster than 68.94% of C++ online submissions for Delete Columns to Make Sorted.
+// Memory Usage: 13.1 MB, less than 17.60% of C++ online submissions for Delete Columns to Make Sorted.
+
+class Solution 
+{
+public:
+    int minDeletionSize(vector<string>& A) 
+    {
+        // 边界条件处理
+        if (A.size() == 0) return 0;
+
+        int res = 0;
+        
+        for (int j = 0; j < A[0].size(); j++)
+        {
+            for (int i = 1; i < A.size(); i++)
+            {
+                if (A[i][j] < A[i - 1][j])
+                {
+                    res++;
+                    break;
+                }
+            }    
+        }
+        return res;
+    }
+};

Delete Columns to Make Sorted/Delete_Columns_to_Make_Sorted.py

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+# Runtime: 236 ms, faster than 13.62% of Python3 online submissions for Delete Columns to Make Sorted.
+# Memory Usage: 14.5 MB, less than 5.02% of Python3 online submissions for Delete Columns to Make Sorted.
+
+class Solution:
+    def minDeletionSize(self, A: List[str]) -> int:
+        
+        if not A:
+            return 0
+        
+        res = 0
+        
+        for j in range(len(A[0])):
+            for i in range(1, len(A)):
+                if ord(A[i][j]) < ord(A[i - 1][j]):
+                    res += 1
+                    break
+        
+        return res