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console.log("Hello World!\n==========\n");
// Exercise 1 Section
console.log("EXERCISE 1:\n==========\n");
function plus(number) {
return function (plusNumber) {
return number + plusNumber;
};
}
const plus15 = plus(15);
console.log(plus15(10)); // Outputs 25
// Exercise 2 Section
console.log("\nEXERCISE 2:\n==========\n");
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,
},
];
// Print names using forEach
users.forEach((user) => console.log(user.name));
// Exercise 3 Section
console.log("\nEXERCISE 3:\n==========\n");
// Create new array with just names and scores using map
const namesAndScores = users.map((user) => ({
name: user.name,
score: user.score,
}));
console.log(namesAndScores);
// Exercise 4 Section
console.log("\nEXERCISE 4:\n==========\n");
// Create new array with only active users using filter
const activeUsers = users.filter((user) => user.isActive);
console.log(activeUsers);
// Exercise 5 Section
console.log("\nEXERCISE 5:\n==========\n");
// Sort users array by score in descending order
users.sort((a, b) => b.score - a.score);
console.log(users);
// Exercise 6 Section
console.log("\nEXERCISE 6:\n==========\n");
// Calculate sum of all scores using reduce
const totalScore = users.reduce((sum, user) => sum + user.score, 0);
// Calculate average score
const averageScore = totalScore / users.length;
console.log(`Total Score: ${totalScore}`);
console.log(`Average Score: ${averageScore}`);