feat: speed violence and momentumn are happening

ligma.config.js

@@ -16,8 +16,7 @@ module.exports = {
         "BTBFS",
         "CompareBinaryTrees",
         "DFSOnBST",
-        // TODO:
-        // Red Black Tree
+        "Trie",
         "DFSGraphList",
         "BFSGraphList",
         "BFSGraphMatrix",

scripts/dsa.js

@@ -140,6 +140,23 @@ module.exports = {
         }]
     },
 
+    Trie: {
+        type: "class",
+        methods: [{
+            name: "insert",
+            args: "item: string",
+            return: "void",
+        }, {
+            name: "delete",
+            args: "item: string",
+            return: "void",
+        }, {
+            name: "find",
+            args: "partial: string",
+            return: "string[]",
+        }]
+    },
+
     BubbleSort: {
         type: "fn",
         fn: "bubble_sort",
@@ -206,40 +223,36 @@ module.exports = {
     MazeSolver: {
         type: "fn",
         fn: "solve",
-        args: "maze: string[][], wall: string, path: string, start: Point, end: Point",
+        args: "maze: string[], wall: string, path: string, start: Point, end: Point",
         "return": ": Point[]",
     },
 
     BTPreOrder: {
         type: "fn",
         fn: "pre_order_search",
-        generic: "<T>",
-        args: "head: BinaryNode<T>",
-        "return": ": BinaryNode<T>[]",
+        args: "head: BinaryNode<number>",
+        "return": ": number[]",
     },
 
     BTInOrder: {
         type: "fn",
         fn: "in_order_search",
-        generic: "<T>",
-        args: "head: BinaryNode<T>",
-        "return": ": BinaryNode<T>[]",
+        args: "head: BinaryNode<number>",
+        "return": ": number[]",
     },
 
     BTPostOrder: {
         type: "fn",
         fn: "post_order_search",
-        generic: "<T>",
-        args: "head: BinaryNode<T>",
-        "return": ": BinaryNode<T>[]",
+        args: "head: BinaryNode<number>",
+        "return": ": number[]",
     },
 
     BTBFS: {
         type: "fn",
         fn: "bfs",
-        generic: "<T>",
-        args: "head: BinaryNode<T>",
-        "return": ": BinaryNode<T>[]",
+        args: "head: BinaryNode<number>",
+        "return": ": number[]",
     },
 
     CompareBinaryTrees: {

src/__tests__/BTBFS.ts

@@ -0,0 +1,12 @@
+import bfs from "@code/BTBFS";
+import { tree } from "./tree";
+
+test("bt bfs", function () {
+    expect(bfs(tree, 45)).toEqual(true);
+    expect(bfs(tree, 7)).toEqual(true);
+    expect(bfs(tree, 69)).toEqual(false);
+});
+
+
+
+

src/__tests__/BTDFS.ts

@@ -0,0 +1,13 @@
+import dfs from "@code/BTDFS";
+import { tree } from "./tree";
+
+test("bt dfs", function () {
+    expect(dfs(tree, 45)).toEqual(true);
+    expect(dfs(tree, 7)).toEqual(true);
+    expect(dfs(tree, 69)).toEqual(false);
+});
+
+
+
+
+

src/__tests__/BTInOrder.ts

@@ -0,0 +1,20 @@
+import bt_in_order from "@code/BTInOrder";
+import { tree } from "./tree";
+
+test("In order", function () {
+    expect(bt_in_order(tree)).toEqual([
+        5,
+        7,
+        10,
+        15,
+        20,
+        29,
+        30,
+        45,
+        50,
+        100,
+    ]);
+});
+
+
+

src/__tests__/BTPostOrder.ts

@@ -0,0 +1,20 @@
+import bt_post_order from "@code/BTPostOrder";
+import { tree } from "./tree";
+
+test("post order", function () {
+    expect(bt_post_order(tree)).toEqual([
+        7,
+        5,
+        15,
+        10,
+        15,
+        29,
+        45,
+        30,
+        100,
+        20,
+    ]);
+});
+
+
+

src/__tests__/BTPreOrder.ts

@@ -0,0 +1,19 @@
+import bt_pre_order from "@code/BTPreOrder";
+import { tree } from "./tree";
+
+test("Pre order", function () {
+    expect(bt_pre_order(tree)).toEqual([
+        20,
+        10,
+        5,
+        7,
+        15,
+        50,
+        30,
+        29,
+        45,
+        100,
+    ]);
+});
+
+

src/__tests__/BinarySearchList.ts

@@ -1,4 +1,4 @@
-import binary_fn from "@code/binary_search_array"
+import binary_fn from "@code/BinarySearchList"
 
 test("binary search array", function() {
 

src/__tests__/BubbleSort.ts

@@ -0,0 +1,10 @@
+import bubble_sort from "@code/BubbleSort";
+
+test("bubble-sort", function () {
+    const arr = [9, 3, 7, 4, 69, 420, 42];
+
+    debugger;
+    bubble_sort(arr);
+    expect(arr).toEqual([3, 4, 7, 9, 42, 69, 420]);
+});
+

src/__tests__/LinearSearchList.ts

@@ -0,0 +1,14 @@
+import linear_fn from "@code/LinearSearchList"
+
+test("linear search array", function() {
+
+    const foo = [1, 3, 4, 69, 71, 81, 90, 99, 420, 1337, 69420];
+    expect(linear_fn(foo, 69)).toEqual(true);
+    expect(linear_fn(foo, 1336)).toEqual(false);
+    expect(linear_fn(foo, 69420)).toEqual(true);
+    expect(linear_fn(foo, 69421)).toEqual(false);
+    expect(linear_fn(foo, 1)).toEqual(true);
+    expect(linear_fn(foo, 0)).toEqual(false);
+});
+
+

src/__tests__/MazeSolver.ts

@@ -0,0 +1,32 @@
+import maze_solver from "@code/MazeSolver";
+
+test("maze solver", function () {
+    const maze = [
+        "xxxxxxxxxx x",
+        "x        x x",
+        "x        x x",
+        "x xxxxxxxx x",
+        "x          x",
+        "x xxxxxxxxxx",
+    ];
+
+    // there is only one path through
+    expect(maze_solver(maze, "x", " ", {x: 10, y: 0}, {x: 1, y: 5})).toEqual([
+        {x: 10, y: 0},
+        {x: 10, y: 1},
+        {x: 10, y: 2},
+        {x: 10, y: 3},
+        {x: 10, y: 4},
+        {x: 9, y: 4},
+        {x: 8, y: 4},
+        {x: 7, y: 4},
+        {x: 6, y: 4},
+        {x: 5, y: 4},
+        {x: 4, y: 4},
+        {x: 3, y: 4},
+        {x: 2, y: 4},
+        {x: 1, y: 4},
+        {x: 1, y: 5},
+    ]);
+});
+

src/__tests__/Trie.ts

@@ -0,0 +1,23 @@
+import Trie from "@code/Trie";
+
+test("Trie", function() {
+    const trie = new Trie();
+    trie.insert("foo");
+    trie.insert("fool");
+    trie.insert("foolish");
+    trie.insert("bar");
+
+    expect(trie.find("fo").sort()).toEqual([
+        "foo",
+        "fool",
+        "foolish",
+    ]);
+
+    trie.remove("fool");
+
+    expect(trie.find("fo").sort()).toEqual([
+        "foo",
+        "foolish",
+    ]);
+});
+

src/__tests__/TwoCrystalBalls.ts

@@ -0,0 +1,13 @@
+import two_crystal_balls from "@code/TwoCrystalBalls";
+
+test("two crystal balls", function () {
+    let idx = Math.floor(Math.random() * 10000);
+    const data = new Array(10000).fill(false);
+
+    for (let i = idx; i < 10000; ++i) {
+        data[i] = true;
+    }
+
+    expect(two_crystal_balls(data)).toEqual(idx);
+});
+

src/__tests__/tree.ts

@@ -0,0 +1,42 @@
+export const tree: BinaryNode<number> = {
+    value: 20,
+    right: {
+        value: 50,
+        right: {
+            value: 100,
+            right: null,
+            left: null,
+        },
+        left: {
+            value: 30,
+            right: {
+                value: 45,
+                right: null,
+                left: null,
+            },
+            left: {
+                value: 29,
+                right: null,
+                left: null,
+            }
+        },
+    },
+    left: {
+        value: 10,
+        right: {
+            value: 15,
+            right: null,
+            left: null,
+        },
+        left: {
+            value: 5,
+            right: {
+                value: 7,
+                right: null,
+                left: null,
+            },
+            left: null,
+        }
+    }
+};
+

src/global.d.ts

@@ -21,8 +21,8 @@ declare type AdjacencyMatrix = number[][]; // A 1 means connected
 
 declare type BinaryNode<T> = {
     value: T;
-    left: BinaryNode<T>;
-    right: BinaryNode<T>;
+    left: BinaryNode<T> | null;
+    right: BinaryNode<T> | null;
 };
 
 declare type GeneralNode<T> = {