Amazon Interview Question for SDE-3s

Country: United States
Interview Type: In-Person

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we can do it by mark and sweep algorithm of gc, on creating objects attach a boolean flag as flase,
let there is a root element which point to every other live child objects, child objects point to all live sub child objects and so on.
1. mark stage :-
when we go out of memory, iterate through all objects present in stack and mark flag as true,

	if(root.flag == flase){
		root.flag = true;
	for(every child){

2. sweep stage:-
iterate through heap, check if current object flag is true, if true then mark it as false else heap.relase(current object)

if(currentObject.flag == true){
		currentObject.flag = false;

- undefined September 16, 2017 | Flag Reply

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