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console.log("Hello World!\n==========\n");
// Exercise 1 Section
console.log("EXERCISE 1:\n==========\n");
function plus(num) {
return function (plusNumber) {
return num + plusNumber;
}
}
const plus2 = plus(2);
//console.log(plus2(2)); Output = 4
//console.log(plus2(100)); Output = 102
const plus100 = plus(100);
//console.log(plus100(100)); Output = 200
//console.log(plus100(5)); Output = 105
// Exercise 2: forEach
let users = [
{
name: "Frodo",
age: 50,
score: 85,
isActive: false,
},
{
name: "Sam",
age: 38,
score: 94,
isActive: true,
},
{
name: "Merry",
age: 36,
score: 82,
isActive: true,
},
{
name: "Pippin",
age: 26,
score: 77,
isActive: false,
},
];
users.forEach((user) => console.log(user.name));
// Exercise 3: map
let newUsers = users.map((user) => {
return { name: user.name, score: user.score };
});
console.log(newUsers);
// Exercise 4: filter
let activeUsers = users.filter((user) => user.isActive);
console.log(activeUsers);
// Exercise 5: sort
users.sort((a, b) => b.name - a.name); // b.score > a.score => swap order
console.log(users);
// Exercise 6: reduce
let avgScore = users.reduce((sum, user) => sum + user.score, 0) / user.length;
console.log(avgScore);