I created a 2d array using Array constructor and filling it with a array inside it.
const a = new Array(26).fill(new Array(2).fill(-1));
When i try to do this a[0][0] = 0 the 0th index of all 26 arrays have changed. How do I prevent that?
const a = new Array(26).fill(new Array(2).fill(-1));
a[0][0] = 0
console.log(a)Try this:
const a = [...Array(26)].map(() => new Array(2).fill(-1))
a[0][0] = 0
console.log(a)