TypeScript - sort array

In TypeScript it is possible to sort array in following ways.

In this example numbers are sorted from smallest to biggest - Array sort (Array.prototype.sort) method with ascending ordering has been used.

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const array: number[] = [5, 2, 3, 1, 4];

array.sort();

​

console.log(array);

Output:

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[ 1, 2, 3, 4, 5 ]

In this example numbers are sorted from smallest to biggest with compare function.

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const array: number[] = [5, 2, 3, 1, 4];

​

array.sort(function (a, b) {

  return a - b;

});

​

console.log(array);

Output:

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[ 1, 2, 3, 4, 5 ]

In this example numbers are sorted from biggest to smallest - in this case compare function is necessary.

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const array: number[] = [5, 2, 3, 1, 4];

​

array.sort(function (a, b) {

  return b - a;

});

​

console.log(array);

Output:

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[ 5, 4, 3, 2, 1 ]

In this example numbers are sorted from biggest to smallest - in this case reverse function has been used.

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const array: number[] = [5, 2, 3, 1, 4];

​

const result = array.sort().reverse();

​

console.log(result);

Output:

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[ 5, 4, 3, 2, 1 ]