Amazon Interview Question for SDE-2s


Country: United States
Interview Type: In-Person




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sassad

- Anonymous March 31, 2017 | Flag Reply
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ddsfdfsdfsdf

- Anonymous March 31, 2017 | Flag Reply
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we can impliment it by graph bfs.

public void snackAndLadderProblem(){
		Integer[] map = new Integer[30];
		map[2]=21;
		map[4]=7;
		map[10]=25;
		map[19]=28;
		map[16]=3;
		map[18]=6;
		map[20]=8;
		map[26]=0;
		int minDiceThrown = 30;
		System.out.println("min steps needed to finish snack and ladder game:- 
                "+this.snackAndLadderCheckForNextSixElement(map, minDiceThrown, 0, 0));
	}

	private int snackAndLadderCheckForNextSixElement(Integer[] map, int 
                minDiceThrown, int startingPoint, int currentCountOfDiceThrown){
		if(currentCountOfDiceThrown > minDiceThrown){
			return minDiceThrown;
		}
		for (int i = 1; i <= 6; i++) {
			int currentIndex = startingPoint+i;
			if(currentIndex >= map.length){
				return currentCountOfDiceThrown+1;
			}
			if(currentIndex < map.length && map[currentIndex]!= null ){
				int diceThrownAfterThisDip = 
                                this.snackAndLadderCheckForNextSixElement(map, 
                                minDiceThrown, map[currentIndex], currentCountOfDiceThrown+1);
				if(diceThrownAfterThisDip < minDiceThrown){
					minDiceThrown = diceThrownAfterThisDip;
				}
			}
		}
		int lastIndex = startingPoint+6;
		while(lastIndex > map.length || map[lastIndex]!=null){
			lastIndex--;
		}
		int diceThrownAfterThisDip = 
                this.snackAndLadderCheckForNextSixElement(map, minDiceThrown, 
                lastIndex, currentCountOfDiceThrown+1);
		if(diceThrownAfterThisDip < minDiceThrown){
			minDiceThrown = diceThrownAfterThisDip;
		}
		return minDiceThrown;
	}

- erkejriwal September 14, 2017 | Flag Reply


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