From 7d438f454f2c73069e4d793ee9cc992fb39eb37e Mon Sep 17 00:00:00 2001
From: openset <openset.wang@gmail.com>
Date: 2019年9月14日 16:05:50 +0800
Subject: [PATCH 1/2] Add: 01 Matrix
---
 problems/01-matrix/01_matrix.go &#124; 42 +++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)
diff --git a/problems/01-matrix/01_matrix.go b/problems/01-matrix/01_matrix.go
index 6625eda01..5c3b532a7 100644
--- a/problems/01-matrix/01_matrix.go
+++ b/problems/01-matrix/01_matrix.go
@@ -1 +1,43 @@
 package p_01_matrix
+
+func updateMatrix(matrix [][]int) [][]int {
+	m, n := len(matrix), len(matrix[0])
+	MIN := m * n
+	// 根据 左方 和 上方 的格子,更新 (i,j)
+	for i := 0; i < m; i++ { + for j := 0; j < n; j++ { + if matrix[i][j] == 0 { + continue + } + matrix[i][j] = MIN + if 0 <= i-1 { + matrix[i][j] = min(matrix[i][j], matrix[i-1][j]+1) + } + if 0 <= j-1 { + matrix[i][j] = min(matrix[i][j], matrix[i][j-1]+1) + } + } + } + // 根据 右方 和 下方 的格子,更新 (i,j) + for i := m - 1; 0 <= i; i-- { + for j := n - 1; 0 <= j; j-- { + if matrix[i][j] == 0 { + continue + } + if i+1 < m { + matrix[i][j] = min(matrix[i][j], matrix[i+1][j]+1) + } + if j+1 < n { + matrix[i][j] = min(matrix[i][j], matrix[i][j+1]+1) + } + } + } + return matrix +} + +func min(a, b int) int { + if a < b { + return a + } + return b +} From df1e8c3f8b25af61999c8119e754720eef892f9e Mon Sep 17 00:00:00 2001 From: openset <openset.wang@gmail.com>
Date: 2019年9月14日 16:24:32 +0800
Subject: [PATCH 2/2] Add: test
---
 problems/01-matrix/01_matrix_test.go &#124; 45 ++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
diff --git a/problems/01-matrix/01_matrix_test.go b/problems/01-matrix/01_matrix_test.go
index 6625eda01..229ca9b8b 100644
--- a/problems/01-matrix/01_matrix_test.go
+++ b/problems/01-matrix/01_matrix_test.go
@@ -1 +1,46 @@
 package p_01_matrix
+
+import (
+	"reflect"
+	"testing"
+)
+
+type caseType struct {
+	input [][]int
+	expected [][]int
+}
+
+func TestUpdateMatrix(t *testing.T) {
+	tests := [...]caseType{
+		{
+			input: [][]int{
+				{0, 0, 0},
+				{0, 1, 0},
+				{0, 0, 0},
+			},
+			expected: [][]int{
+				{0, 0, 0},
+				{0, 1, 0},
+				{0, 0, 0},
+			},
+		},
+		{
+			input: [][]int{
+				{0, 0, 0},
+				{0, 1, 0},
+				{1, 1, 1},
+			},
+			expected: [][]int{
+				{0, 0, 0},
+				{0, 1, 0},
+				{1, 2, 1},
+			},
+		},
+	}
+	for _, tc := range tests {
+		output := updateMatrix(tc.input)
+		if !reflect.DeepEqual(output, tc.expected) {
+			t.Fatalf("input: %v, output: %v, expected: %v", tc.input, output, tc.expected)
+		}
+	}
+}
</div><div class="naked_ctrl">
<form action="/index.cgi/contrast" method="get" name="gate">
<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://patch-diff.githubusercontent.com/raw/awesee/leetcode/pull/638.patch">(-&gt;オリジナル)</a>
/ <label>アドレス: <input type="text" name="naked_post_url" value="https://patch-diff.githubusercontent.com/raw/awesee/leetcode/pull/638.patch" size="22" /></label> <label>モード: <select name="naked_post_mode">
<option value="default">デフォルト</option>
<option value="speech">音声ブラウザ</option>
<option value="ruby">ルビ付き</option>
<option value="contrast" selected="selected">配色反転</option>
<option value="larger-text">文字拡大</option>
<option value="mobile">モバイル</option>
</select>
<input type="submit" value="表示" />
</p>
</form>
</div>