// 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
var x = new Array(10);
for (var i = 0; i < x.length; i++) {
x[i] = new Array(3);
}
console.log(x);var iMax = 20;
var jMax = 10;
var f = new Array();
for (i=0;i<iMax;i++) {
f[i]=new Array();
for (j=0;j<jMax;j++) {
f[i][j]=0;
}
}
const fillSquareMatrix = (size) => {
return Array(size)
.fill()
.map((u,y) => Array(size)
.fill()
.map((u,x) => y * size + x + 1));
};
console.log(fillSquareMatrix(3));var items = [
[1, 2],
[3, 4],
[5, 6]
];
console.log(items[0][0]); // 1
console.log(items[0][1]); // 2
console.log(items[1][0]); // 3
console.log(items[1][1]); // 4
console.log(items);var grid = [];
iMax = 3;
jMax = 2;
count = 0;
for (let i = 0; i < iMax; i++) {
grid[i] = [];
for (let j = 0; j < jMax; j++) {
grid[i][j] = count;
count++;
}
}
// grid = [
// [ 0, 1 ]
// [ 2, 3 ]
// [ 4, 5 ]
// ];
console.log(grid[0][2]); // 4