How to Reverse an Array in TypeScript - Step by Step Examples

How to Reverse an Array in TypeScript ?

Answer

To reverse an array in TypeScript, you can use the same approach as in JavaScript, using the built-in `reverse()` method.

✐ Examples

1 Reverse Array of Integers

In this example,

We have an array named intArray containing integers.
We use the reverse() method on intArray to reverse its elements in place.
We print both arrays to demonstrate the reversal.

TypeScript Program

let intArray: number[] = [1, 2, 3, 4, 5];
intArray.reverse();
console.log('Original Array:', intArray);
console.log('Reversed Array:', intArray);

Output

Original Array: [ 5, 4, 3, 2, 1 ]
Reversed Array: [ 5, 4, 3, 2, 1 ]

2 Reverse Array of Strings

In this example,

We have an array named strArray containing strings.
We use the reverse() method on strArray to reverse its elements in place.
We print both arrays to demonstrate the reversal.

TypeScript Program

let strArray: string[] = ['apple', 'banana', 'cherry'];
strArray.reverse();
console.log('Original Array:', strArray);
console.log('Reversed Array:', strArray);

Output

Original Array: [ 'cherry', 'banana', 'apple' ]
Reversed Array: [ 'cherry', 'banana', 'apple' ]

Summary

In this tutorial, we learned How to Reverse an Array in TypeScript language with well detailed examples.

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