Traverse 2D Array (Matrix) Diagonally
- by jonobr1
So I found this thread that was extremely helpful in traversing an array diagonally. I'm stuck though on mirroring it. For example:
var m = 3;
var n = 4;
var a = new Array();
var b = 0;
for(var i = 0; i < m; i++) {
a[i] = new Array(n);
for(var j = 0; j < n; j++) {
a[i][j] = b;
b++;
}
}
for (var i = 0; i < m + n - 1; i++) {
var z1 = (i < n) ? 0 : i - n + 1;
var z2 = (i < m) ? 0 : i - m + 1;
for (var j = i - z2; j >= z1; j--) {
console.log(a[j][i - j]);
}
}
Console reads [[0],[4,1],[8,5,2],[9,6,3],[10,7],[11]]
I'd like it to read [[8],[4,9],[0,5,10],[1,6,11],[2,7],[3]]
Been stumped for awhile, it's like a rubik's cube _<
