From 185ef9fcb0e59f13e9ee0ccb261693cdaddebab0 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Tue, 23 Feb 2021 21:07:19 +0800
Subject: import(solutions): Move leetcode solutions to subdir.

---
 works/solutions/leetcode/cpp/63.cpp | 44 +++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 works/solutions/leetcode/cpp/63.cpp

(limited to 'works/solutions/leetcode/cpp/63.cpp')

diff --git a/works/solutions/leetcode/cpp/63.cpp b/works/solutions/leetcode/cpp/63.cpp
new file mode 100644
index 0000000..ed07bdc
--- /dev/null
+++ b/works/solutions/leetcode/cpp/63.cpp
@@ -0,0 +1,44 @@
+#include <vector>
+
+using std::vector;
+
+class Solution
+{
+public:
+    int uniquePathsWithObstacles(vector<vector<int>> &obstacleGrid)
+    {
+        if (obstacleGrid[0][0])
+            return 0;
+        obstacleGrid[0][0] = 1;
+
+        int row = obstacleGrid.size();
+        int col = obstacleGrid.front().size();
+
+        for (int i = 1; i < row; i++)
+        {
+            obstacleGrid[i][0] = obstacleGrid[i - 1][0] && !obstacleGrid[i][0] ? 1 : 0;
+        }
+
+        for (int i = 1; i < col; i++)
+        {
+            obstacleGrid[0][i] = obstacleGrid[0][i - 1] && !obstacleGrid[0][i] ? 1 : 0;
+        }
+
+        for (int r = 1; r < row; r++)
+        {
+            for (int c = 1; c < col; c++)
+            {
+                if (obstacleGrid[r][c])
+                {
+                    obstacleGrid[r][c] = 0;
+                }
+                else
+                {
+                    obstacleGrid[r][c] = obstacleGrid[r - 1][c] + obstacleGrid[r][c - 1];
+                }
+            }
+        }
+
+        return obstacleGrid[row - 1][col - 1];
+    }
+};
-- 
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