Juspay Interview Question for Software Developers


Country: India




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I am not sure how can we do it in O(Log(n)), but with O(n) it should be easy.

1) Keep a map where you store the cells which can be reached by C1.
2) Traverse through the path of C1, keep on storing the path in the map. {c1: 1, c1->exit: i, c1->exit->exit: 1 ....}
3) Do the same traversal for c2, at any time if you find the exit path exist in the above map then that is the meeting point of 2 cells.

In Javascript:

var path               = {},
      meetingPoint = null;
while(c1.exit) {
	var cell = c1.exit;
	path[cell] = 1;
}
while(c2.exit) {
	if (path[c2.exit] === 1) {
		meetingPoint = c2.exit;
	}
}

return meetingPoint;

- Piyush Beli September 24, 2016 | Flag Reply


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