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Diffstat (limited to 'min_path_sum.cpp')
-rw-r--r-- | min_path_sum.cpp | 29 |
1 files changed, 0 insertions, 29 deletions
diff --git a/min_path_sum.cpp b/min_path_sum.cpp deleted file mode 100644 index 2240f59..0000000 --- a/min_path_sum.cpp +++ /dev/null @@ -1,29 +0,0 @@ -// 64. Minimum Path Sum -#include "leetcode.h" - -// given 'm x n grid' filled with non-negative numbers, find a path from top -// left to bottom right, which minimises the sum of all numbers along its path - -class Solution { -public: - int minPathSum(vvd(int) & grid) { - int m = grid.size(), n = grid[0].size(); - vvd(int) sum(m, vector<int>(n, grid[0][0])); - for (int i = 1; i < m; i++) - sum[i][0] = sum[i - 1][0] + grid[i][0]; - for (int j = 1; j < n; j++) - sum[0][j] = sum[0][j - 1] + grid[0][j]; - for (int i = 1; i < m; i++) - for (int j = 1; j < n; j++) - sum[i][j] = min(sum[i - 1][j], sum[i][j - 1]) + grid[i][j]; - return sum[m - 1][n - 1]; - } -}; - -int main() { - Solution obj; - vvd(int) g1 = {{1, 3, 1}, {1, 5, 1}, {4, 2, 1}}; - vvd(int) g2 = {{1, 2, 3}, {4, 5, 6}}; - printf("%d\n", obj.minPathSum(g1)); // expect: 7 - printf("%d\n", obj.minPathSum(g2)); // expect: 12 -} |