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https://leetcode.cn/problems/regions-cut-by-slashes/
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‎README.md

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@@ -10,6 +10,8 @@ leetcode 测试
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##### 包含的内容如下
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https://leetcode.cn/problems/regions-cut-by-slashes/
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https://leetcode.cn/problems/minimum-amount-of-time-to-collect-garbage/
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https://leetcode.cn/problems/find-a-corresponding-node-of-a-binary-tree-in-a-clone-of-that-tree/

‎regions-cut-by-slashes/index.ts

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import { UnionFind } from "../largest-component-size-by-common-factor/UnionFind.ts";
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export default function regionsBySlashes(grid: string[]): number {
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const uf = new UnionFind();
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const n = grid.length;
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for (const [i, s] of grid.entries()) {
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const row = [...s];
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for (const [j, c] of row.entries()) {
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const index = 4 * (i * n + j);
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if (c === "/") {
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uf.union(index, index + 3);
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uf.union(index + 1, index + 2);
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} else if (c === "\\") {
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uf.union(index, index + 1);
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uf.union(index + 2, index + 3);
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} else {
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uf.union(index, index + 1);
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uf.union(index + 2, index + 3);
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uf.union(index + 1, index + 2);
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}
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if (j + 1 < n) {
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uf.union(index + 1, 4 * (i * n + j + 1) + 3);
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}
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if (i + 1 < n) {
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uf.union(index + 2, 4 * ((i + 1) * n + j));
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}
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}
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}
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return [...new Array(n * n * 4).keys()].reduce(
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(p, c) => p + Number(uf.find(c) === c),
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0,
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);
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}

‎regions-cut-by-slashes/test.ts

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import { assertEquals } from "https://deno.land/[email protected]/testing/asserts.ts";
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import regionsBySlashes from "./index.ts";
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Deno.test("regions-cut-by-slashes", () => {
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assertEquals(
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[
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[
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" // /\\/ /\\ \\ /\\\\ \\ / / \\/\\",
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"/\\ ///\\/\\/// \\//\\ \\ /\\\\ \\",
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"\\ / / /\\/\\\\\\ \\// /\\\\/\\/\\ ",
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"/// // /\\\\\\\\/ ///\\/\\/ /\\ /",
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"/\\//\\\\// / /\\/ \\//\\/\\\\ \\// ",
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"/\\ /////\\\\ /\\//\\/\\\\ /\\ /",
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"/ \\\\ \\\\/\\//\\/\\/ //////\\ \\/",
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"\\\\/\\ \\//\\//\\ \\ \\//\\/\\/\\/\\\\\\\\ ",
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" \\//\\ \\ / / / // /\\ /\\\\ \\\\/\\",
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"///\\ /\\/\\\\\\\\ / \\/ \\/\\\\\\ \\// ",
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"/ /\\\\ \\ \\\\/\\\\ \\\\ / /\\\\// //\\",
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"/\\/\\///\\/\\//\\\\/\\\\ \\/ \\\\//\\ \\ \\",
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"/\\// / \\/ // \\////\\ \\\\/ \\\\ \\/ ",
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"/ \\\\\\ //\\\\/\\/\\\\\\/\\\\ \\// /\\\\\\/",
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" \\ ///\\/\\ \\\\ \\\\\\\\/ // // ",
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"\\/\\ / /\\ / /\\\\/\\\\ \\\\\\ /\\\\/ \\\\",
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"\\ // /\\/ ////\\\\\\/ / \\\\\\ / \\",
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"\\/ \\\\/ \\//\\\\ \\// //\\/ /\\\\\\\\ ",
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" / / / / \\\\//\\\\ \\/ ///\\\\",
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"\\\\ \\\\\\/\\ \\/ /\\/ //\\\\\\/ \\ ",
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"//////\\ /\\/// //\\/\\\\\\ /\\\\ //",
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"\\\\\\ // \\ /\\ // /\\\\ / ///\\\\ /",
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"/\\\\ //\\/\\\\// \\ \\ \\\\/\\\\\\\\\\ \\/",
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"\\/\\ \\\\/// \\ \\//\\/ \\/\\/ / \\ \\/\\",
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"/ /\\\\/\\/\\/ \\\\/ \\\\/ / \\ \\\\ \\",
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"/\\/\\ / /\\ //\\/\\\\//\\/\\/ /\\\\ /\\",
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"\\ \\//\\\\/\\ /\\ /\\//\\// ///\\ \\ ",
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" \\\\/ \\//\\ \\\\ // / \\/\\\\//\\/",
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" \\/\\ \\\\/\\ / \\ / \\\\\\/ \\\\/\\ ",
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" \\\\\\//\\\\//\\/ /\\\\/ \\\\// \\\\\\ /\\",
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],
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[" /", "/ "],
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[" /", " "],
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["/\\", "\\/"],
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[" /", "/ "],
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[
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" \\ \\/ /// //\\ \\ \\ /// /\\\\ //\\",
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" ///\\ \\////\\ /\\\\/\\\\///\\// \\ /",
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"// // /\\ /\\ \\ //\\ \\\\\\\\///\\/\\ ",
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" \\\\\\\\///\\\\/ \\/\\\\ \\\\\\/// / ",
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" / / \\\\ \\\\/ \\\\ /\\/ //\\ / ",
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"/ / //// / \\ //\\ /// /// \\ ",
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"/\\/\\//\\ \\\\\\\\\\ \\\\// // \\/ \\\\ ",
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" //\\ \\\\\\/\\/\\\\ /\\ /\\/// /\\ //\\",
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"//\\\\\\\\// / \\\\ /\\/ //\\//\\/\\\\ ",
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" /\\ //\\\\/ /\\/\\//\\ / //\\ \\/ /",
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" \\/ \\///\\/\\\\/ \\ \\ \\// \\//\\ ",
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" / ///\\/\\\\\\/\\\\ \\ /\\ / \\",
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"/\\\\/\\ ////\\/ / / /\\/// / /\\",
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" \\\\\\ \\ / \\ /\\ // // / ",
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" \\/ \\\\ /\\\\// /\\\\\\ /\\ /\\\\\\ ",
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"\\/ \\/\\ /// /\\ / \\ / // / \\ \\",
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"\\/\\\\\\ \\//\\ \\ \\\\ \\/ // // /\\",
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"/ \\/\\\\\\ // \\\\\\/ \\ /\\/ \\\\\\ ",
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"\\\\ \\/\\ // /\\ // \\\\/\\\\ \\\\ \\ /",
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"/ \\\\ / \\\\\\/\\\\ \\ / \\ \\ / \\",
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"/ / \\ \\\\ \\ /\\ /\\ /\\\\// \\\\// ",
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"/ //// \\/\\// /\\/ / \\ \\\\\\ \\/ ",
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"\\ ////\\/\\ \\ ////\\//\\/ \\/\\ /",
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"/ \\ // \\ / \\\\ /\\ //// / /\\",
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"/ //\\/ / \\/ \\/\\\\ /\\ /\\ \\//\\",
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"\\/\\\\ \\////\\\\/\\/ //\\ / /\\\\\\\\ ",
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"/////\\\\\\/ \\ \\ /\\/\\ / /\\// ",
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"\\ / // \\//\\\\/\\\\\\ \\//\\ /// ",
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"// / / / / /\\\\/\\\\/\\\\\\ \\ \\\\",
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" \\\\ \\ /// \\\\/\\\\ /\\ / ///\\/",
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],
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[
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" \\\\ // /\\/\\/ // /\\ \\\\ \\//",
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" \\/\\//\\\\//\\\\\\\\//// /\\/ \\\\/\\/\\/",
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"\\\\\\ /\\// \\\\/ /\\ /\\\\//\\/\\////",
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" //\\\\ \\/ /////\\ /\\/ //\\/ \\/ /",
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" //// / / \\//\\\\ \\\\/\\\\/\\\\\\// \\",
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"\\\\\\\\ / /\\/\\\\\\/\\ \\\\//\\ \\ \\ //\\",
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"//\\\\// /\\///\\\\\\\\\\ / \\ /\\/ \\\\",
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"\\// \\\\\\/ //\\ /\\ // / \\\\ / / ",
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" / /// \\// \\\\ \\\\ ///\\\\// ",
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" \\ \\\\/ /\\/\\\\ \\ \\ \\\\/\\//\\\\",
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"\\\\ \\ /\\ \\/\\\\/ \\\\\\//\\ /\\ /",
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" \\\\ \\ \\\\\\\\\\\\/\\ \\/ \\// \\",
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"\\/ \\ /\\ /\\ \\\\\\/\\ //\\/\\\\ \\\\\\\\",
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"\\\\/ / \\\\// \\/\\\\ \\\\/ \\\\ \\/ ",
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" / \\/\\ \\\\// \\///\\\\/ //\\\\/\\//\\",
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" \\\\ \\/\\/ \\/\\ \\ // /\\ \\\\\\\\/ \\",
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" \\ \\ /\\\\ /\\\\ ///\\ /\\ /\\ \\//",
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"/ / / // /// /\\ // / \\ \\ / /",
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"\\/\\\\ \\/\\\\\\ ///\\///\\\\/\\//// \\//",
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"///\\\\\\ \\/ \\\\/\\/\\\\//\\ \\ \\/\\/",
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"\\\\\\ /// // \\ \\\\/\\/ \\/\\ / / ",
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" /\\//\\\\ \\/\\ \\/\\/\\\\\\ \\ \\//\\ \\\\",
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"/\\\\ \\//\\\\ / / \\ \\ //\\\\ \\ \\\\ \\ ",
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"/\\/\\/\\ //\\\\ // // / / \\\\\\/ \\/",
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"/\\\\ /\\\\/ / //\\ // / /\\\\ \\ ",
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"\\\\\\//\\\\///\\/ \\\\ \\ \\\\ / \\\\///\\",
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"/ /\\/\\\\\\///\\/\\\\///// / /\\ ",
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"\\ \\/\\ /\\/ \\//\\\\ \\\\ \\/\\ \\\\/\\",
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"//\\ / \\ / /\\\\/////\\\\ \\ /\\ ",
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"/ / // /\\///\\ \\ \\ / /\\ \\ ",
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],
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].map(regionsBySlashes),
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[37, 2, 1, 5, 2, 32, 41],
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);
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});

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