multi dimensional array javascript
// declaration of a two-dimensional array
// 5 is the number of rows and 4 is the number of columns.
const matrix = new Array(5).fill(0).map(() => new Array(4).fill(0));
console.log(matrix[0][0]); // 0
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3.75
8
//2D array
let activities = [
['Work', 9],
['Eat', 1],
['Commute', 2],
['Play Game', 1],
['Sleep', 7]
];
Thank you!
8
3.75
(8 Votes)
0
5
4
/*having the previous array easy to make is very useful*/
function Array2D(x, y){
let arr = Array(x);
for(let i = 0; i < y; i++){
arr[i] = Array(y);
}
return arr;
}
function Array3D(x, y, z){
let arr = Array2D(x, y);
for(let i = 0; i < y; i++){
for(let j = 0; j < z; j++){
arr[i][j] = Array(z);
}
}
return arr;
}
function Array4D(x, y, z, w){
let arr = Array3D(x, y, z);
for(let i = 0; i < x; i++){
for(let j = 0; j < y; j++){
for(let n = 0; n < z; n++){
arr[i][j][n] = Array(w);
}
}
}
return arr;
}
/*making the array*/
let myArray = Array4D(10, 10, 10, 10);
Thank you!
4
5
(4 Votes)
0
0
0
//2D array
let activities = [
['Work', 9],
['Eat', 1],
['Commute', 2],
['Play Game', 1],
['Sleep', 7]
];
Thank you!
0
0
0
4
10
//2D array
let activities = [
['Work', 9],
['Eat', 1],
['Commute', 2],
['Play Game', 1],
['Sleep', 7]
];
Thank you!
10
4
(10 Votes)
0
0
4
//2D array
let activities = [
['Work', 9],
['Eat', 1],
['Commute', 2],
['Play Game', 1],
['Sleep', 7]
];
Thank you!
4
0
0
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