Changes

week-2/01-async-js/hard (promises)/3-promise-all.js

@@ -5,18 +5,34 @@
  */
 
 function wait1(t) {
-
+    return new Promise((resolve) => {
+        setTimeout(() => {
+            resolve();
+        }, t * 1000);
+    });
 }
 
 function wait2(t) {
-
+    return new Promise((resolve) => {
+        setTimeout(() => {
+            resolve();
+        }, t * 1000);
+    });
 }
 
 function wait3(t) {
-
+    return new Promise((resolve) => {
+        setTimeout(() => {
+            resolve();
+        }, t * 1000);
+    });
 }
 
 function calculateTime(t1, t2, t3) {
+    const start = new Date().getTime();
+    return Promise.all([wait1(t1), wait2(t2), wait3(t3)]).then(() => {
+        return new Date().getTime() - start;
+    });
 
 }
 

week-3/04-mongo-with-jwt-auth/package.json

@@ -13,6 +13,7 @@
     "@babel/plugin-transform-modules-commonjs": "^7.23.3",
     "express": "^4.18.2",
     "jest": "^29.7.0",
+    "jsonwebtoken": "^9.0.2",
     "mongoose": "^8.0.3",
     "supertest": "^6.3.3",
     "ts-node": "^10.9.2"

week-6/1-use-memo/src/components/Assignment1.jsx

@@ -1,12 +1,18 @@
-import { useState } from "react";
+import { useMemo, useState } from "react";
 
 // In this assignment, your task is to create a component that performs an expensive calculation (finding the factorial) based on a user input. 
 // Use useMemo to ensure that the calculation is only recomputed when the input changes, not on every render.
 
 export function Assignment1() {
     const [input, setInput] = useState(0);
     // Your solution starts here
-    const expensiveValue = 0; 
+    const expensiveValue = useMemo(()=>{
+        let value =1
+        for(let i=1;i<input;i++)
+            value=value+i;
+        return value
+    },[input]);
+
     // Your solution ends here
 
     return (