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πŸ“„ Sort Array

Question Description​

Given an array of numbers, use the sort function to sort the array. Provide solutions for both scenarios:

  1. Ascending order (smallest to largest)
  2. Descending order (largest to smallest)

Ascending Sort​

const numbers = [10, 5, 50, 2, 200];

// Using a comparison function
numbers.sort(function (a, b) {
  return a - b;
});

console.log(numbers); // [2, 5, 10, 50, 200]

Descending Sort​

const numbers = [10, 5, 50, 2, 200];

numbers.sort(function (a, b) {
  return b - a;
});

console.log(numbers); // [200, 50, 10, 5, 2]

Intentionally Inserting Strings​

const mixedNumbers = [10, '5', 50, '2', 200];

mixedNumbers.sort(function (a, b) {
  return Number(a) - Number(b);
});

console.log(mixedNumbers); // ['2', '5', 10, 50, 200]

However, this solution cannot handle strings that cannot be converted to numbers, such as 'iphone', 'ipad', etc. These strings are converted to NaN, and while they may end up at the end of the sorted array, different browsers may produce different results. In such cases, consider using filter first to remove and restructure the array.

Object Sorting​

const mockArray = [
  { type: 'a', label: 1 },
  { type: 'a', label: 2 },
  { type: 'c', label: 1 },
  { type: 'c', label: 3 },
  { type: 'b', label: 2 },
];