future4code · 477885555 · Sep 22, 2022
diff --git a/Back-end/modulo2/MODULO3/recursividade/.codesandbox/workspace.json b/Back-end/modulo2/MODULO3/recursividade/.codesandbox/workspace.json
@@ -0,0 +1,20 @@
+{
+  "responsive-preview": {
+    "Mobile": [
+      320,
+      675
+    ],
+    "Tablet": [
+      1024,
+      765
+    ],
+    "Desktop": [
+      1400,
+      800
+    ],
+    "Desktop  HD": [
+      1920,
+      1080
+    ]
+  }
+}
diff --git a/Back-end/modulo2/MODULO3/recursividade/index.html b/Back-end/modulo2/MODULO3/recursividade/index.html
@@ -0,0 +1,15 @@
+<html>
+
+<head>
+	<title>Parcel Sandbox</title>
+	<meta charset="UTF-8" />
+</head>
+
+<body>
+	<div id="app"></div>
+
+	<script src="src/index.ts">
+	</script>
+</body>
+
+</html>
diff --git a/Back-end/modulo2/MODULO3/recursividade/package.json b/Back-end/modulo2/MODULO3/recursividade/package.json
@@ -0,0 +1,22 @@
+{
+  "name": "recursividade",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.html",
+  "scripts": {
+    "start": "parcel index.html --open",
+    "build": "parcel build index.html"
+  },
+  "dependencies": {
+    "@types/jest": "28.1.6",
+    "jest": "28.1.3",
+    "parcel-bundler": "^1.6.1"
+  },
+  "devDependencies": {
+    "typescript": "4.4.4"
+  },
+  "resolutions": {
+    "@babel/preset-env": "7.13.8"
+  },
+  "keywords": []
+}
diff --git a/Back-end/modulo2/MODULO3/recursividade/src/checkEmptyObject.test.ts b/Back-end/modulo2/MODULO3/recursividade/src/checkEmptyObject.test.ts
@@ -0,0 +1,23 @@
+import { checkEmptyObject } from "./checkEmptyObject";
+
+test("checkEmptyObject", () => {
+  expect(checkEmptyObject({ prop1: "maçã", prop2: "bananinha" })).toBe(false);
+  expect(checkEmptyObject({ prop1: undefined, prop2: "bananinha" })).toBe(true);
+  expect(checkEmptyObject({ prop1: null, prop2: "bananinha" })).toBe(true);
+  expect(checkEmptyObject({ prop1: 0, prop2: "bananinha" })).toBe(true);
+  expect(checkEmptyObject({ prop1: "", prop2: "bananinha" })).toBe(true);
+  expect(checkEmptyObject({ prop1: [], prop2: "bananinha" })).toBe(true);
+  expect(checkEmptyObject({ prop1: {}, prop2: "bananinha" })).toBe(true);
+  expect(
+    checkEmptyObject({
+      prop1: {
+        outraProp: {
+          a: {
+            b: null
+          }
+        }
+      },
+      prop2: "bananinha"
+    })
+  ).toBe(true);
+});
diff --git a/Back-end/modulo2/MODULO3/recursividade/src/checkEmptyObject.ts b/Back-end/modulo2/MODULO3/recursividade/src/checkEmptyObject.ts
@@ -0,0 +1,30 @@
+function isEmpty(value: any): boolean {
+  return (
+    value === undefined ||
+    value === null ||
+    value === 0 ||
+    value === "" ||
+    (Array.isArray(value) && value.length === 0) ||
+    (typeof value === "object" &&
+      (Object.values(value!).length === 0 || checkEmptyObject(value)))
+  );
+}
+
+export function checkEmptyObject(obj: any): boolean {
+  // exemplo:
+  // const obj = {
+  //   name: "nome",
+  //   id: "Id",
+  //   number: 5
+  //   }
+
+  const values = Object.values(obj);
+  // exemplo array values
+  // ["nome", "id", 5]
+  for (let value of values) {
+    if (isEmpty(value)) {
+      return true;
+    }
+  }
+  return false;
+}
diff --git a/Back-end/modulo2/MODULO3/recursividade/src/factorial.ts b/Back-end/modulo2/MODULO3/recursividade/src/factorial.ts
@@ -0,0 +1,10 @@
+export const factorial = (n: number): number => {
+  if (n <= 0) {
+    return 1;
+  }
+
+  return n * factorial(n - 1);
+  // exmplo com n=2 => 2* 1 *1
+  // exmplo com n=3 => 3* 2* 1 *1
+  // exmplo com n=4 => 4* 3* 2* 1 *1
+};
diff --git a/Back-end/modulo2/MODULO3/recursividade/src/fibonacci.ts b/Back-end/modulo2/MODULO3/recursividade/src/fibonacci.ts
@@ -0,0 +1,7 @@
+export const fibonacci = (n: number): number => {
+  if (n <= 2) {
+    return 1;
+  }
+
+  return fibonacci(n - 1) + fibonacci(n - 2);
+};
diff --git a/Back-end/modulo2/MODULO3/recursividade/src/index.ts b/Back-end/modulo2/MODULO3/recursividade/src/index.ts
@@ -0,0 +1,26 @@
+import { fibonacci } from "./fibonacci";
+import { factorial } from "./factorial";
+import { printCharacters } from "./printCharacters";
+import { checkEmptyObject } from "./checkEmptyObject";
+
+// console.log("factorial:");
+// console.log("1", factorial(1));
+// console.log("2", factorial(2));
+// console.log("3", factorial(3));
+// console.log("4", factorial(4));
+// console.log("5", factorial(5));
+// console.log("6", factorial(6));
+
+//console.log("fibonacci:");
+// console.log("1", fibonacci(1));
+// console.log("2", fibonacci(2));
+// console.log("3", fibonacci(3));
+// console.log("4", fibonacci(4));
+// console.log("5", fibonacci(5));
+// console.log("6", fibonacci(6));
+//console.log("Count", fibonacci(7));
+
+// console.log("printCharacters:");
+// console.log("Olá", printCharacters("Olá"));
+// console.log("tudo", printCharacters("tudo"));
+// console.log("bem?", printCharacters("bem?"));
diff --git a/Back-end/modulo2/MODULO3/recursividade/src/printCharacters.ts b/Back-end/modulo2/MODULO3/recursividade/src/printCharacters.ts
@@ -0,0 +1,10 @@
+export const printCharacters = (str: string, index: number = 0): void => {
+  // if (index < str.length) {
+  //   console.log(str[index]);
+  //   printCharacters(str, index + 1);
+  // }
+
+  for (let char of str) {
+    console.log(char);
+  }
+};
diff --git a/Back-end/modulo2/MODULO3/recursividade/tsconfig.json b/Back-end/modulo2/MODULO3/recursividade/tsconfig.json
@@ -0,0 +1,16 @@
+{
+  "compilerOptions": {
+    "strict": true,
+    "module": "commonjs",
+    "jsx": "preserve",
+    "esModuleInterop": true,
+    "sourceMap": true,
+    "allowJs": true,
+    "lib": [
+      "es2017",
+      "dom"
+    ],
+    "rootDir": "src",
+    "moduleResolution": "node"
+  }
+}