How to create a Two Dimensional Array in TypeScript - Step by Step Examples

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How to create a Two Dimensional Array in TypeScript ?

Answer

To create a Two Dimensional Array in TypeScript, you can initialize an array of arrays with specified dimensions.

✐ Examples

1 Creating a 2D Array of Numbers

In this example,

We declare and initialize a 2D array of numbers named matrix with dimensions 3x3.
We assign values to the elements of the array.
The outer loop iterates over rows, and the inner loop iterates over columns to fill the array.

TypeScript Program

const matrix: number[][] = [];
for (let i = 0; i < 3; i++) {
    matrix[i] = [];
    for (let j = 0; j < 3; j++) {
        matrix[i][j] = i + j;
    }
}
console.log(matrix);

Output

[ [ 0, 1, 2 ], [ 1, 2, 3 ], [ 2, 3, 4 ] ]

2 Creating a 2D Array of Strings

In this example,

We declare and initialize a 2D array of strings named matrix with dimensions 2x2.
We assign values to the elements of the array.
The outer loop iterates over rows, and the inner loop iterates over columns to fill the array.

TypeScript Program

const matrix: string[][] = [];
for (let i = 0; i < 2; i++) {
    matrix[i] = [];
    for (let j = 0; j < 2; j++) {
        matrix[i][j] = `Row ${i + 1}, Column ${j + 1}`;
    }
}
console.log(matrix);

Output

[
  [ 'Row 1, Column 1', 'Row 1, Column 2' ],
  [ 'Row 2, Column 1', 'Row 2, Column 2' ]
]

Summary

In this tutorial, we learned How to create a Two Dimensional Array in TypeScript language with well detailed examples.

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How to create a Two Dimensional Array in TypeScript - Step by Step Examples

How to create a Two Dimensional Array in TypeScript ?

Answer

✐ Examples

1 Creating a 2D Array of Numbers

TypeScript Program

Output

2 Creating a 2D Array of Strings

TypeScript Program

Output

Summary

More TypeScript Arrays Tutorials