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44 lines
968 B
44 lines
968 B
// File: min_path_sum_test.go
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// Created Time: 2023-07-23
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// Author: Reanon (793584285@qq.com)
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package chapter_dynamic_programming
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import (
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"fmt"
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"testing"
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)
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func TestMinPathSum(t *testing.T) {
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grid := [][]int{
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{1, 3, 1, 5},
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{2, 2, 4, 2},
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{5, 3, 2, 1},
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{4, 3, 5, 2},
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}
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n, m := len(grid), len(grid[0])
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// 暴力搜索
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res := minPathSumDFS(grid, n-1, m-1)
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fmt.Printf("从左上角到右下角的做小路径和为 %d\n", res)
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// 记忆化搜索
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mem := make([][]int, n)
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for i := 0; i < n; i++ {
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mem[i] = make([]int, m)
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for j := 0; j < m; j++ {
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mem[i][j] = -1
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}
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}
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res = minPathSumDFSMem(grid, mem, n-1, m-1)
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fmt.Printf("从左上角到右下角的做小路径和为 %d\n", res)
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// 动态规划
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res = minPathSumDP(grid)
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fmt.Printf("从左上角到右下角的做小路径和为 %d\n", res)
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// 空间优化后的动态规划
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res = minPathSumDPComp(grid)
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fmt.Printf("从左上角到右下角的做小路径和为 %d\n", res)
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}
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