// 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 [r, c] = [5, 5];
var m = Array(r).fill().map(()=>Array(c).fill(0));
function createArray(row,column) {
let arr = [];
for(var i=0; i<row; i++){
arr[i] = [Math.floor(Math.random() * (10))];
for(var j=0;j<column;j++){
arr[i][j]= [Math.floor(Math.random() * (20))];
}
}
return arr;
}
var arrVal = createArray(4, 5);
console.log(arrVal);