Jumping on the Clouds

Problem Statement :

There is a new mobile game that starts with consecutively numbered clouds. Some of the clouds are thunderheads and others are cumulus. The player can jump on any cumulus cloud having a number that is equal to the number of the current cloud plus 1 or 2. The player must avoid the thunderheads. Determine the minimum number of jumps it will take to jump from the starting postion to the last cloud. It is always possible to win the game.

For each game, you will get an array of clouds numbered 0 if they are safe or 1 if they must be avoided.

Function Description

Complete the jumpingOnClouds function in the editor below.

jumpingOnClouds has the following parameter(s):

int c[n]: an array of binary integers


int: the minimum number of jumps required

Input Format

The first line contains an integer n, the total number of clouds. The second line contains n space-separated binary integers describing clouds c[ i ] where 0  <=  i  < n.


2  <=  n  <=   100

Output Format

Print the minimum number of jumps needed to win the game.

Solution :


                            Solution in C :

In    C :

int main(int argc, char const *argv[])
	int n,i,count=0;
	int arr[n];




	return 0;

                        Solution in C++ :

In   C++  :


using namespace std;

int a[100], dp[100];

int main() {
	int n;
	scanf("%d", &n);
	for (int i = 0; i < n; i++) scanf("%d", a + i);
	dp[0] = 0;
	for (int i = 1; i < n; i++) {
		dp[i] = dp[i - 1] + 1;
		if (i > 1) dp[i] = min(dp[i], dp[i - 2] + 1);
		if (a[i] == 1) dp[i] = n + 1;
	printf("%d\n", dp[n - 1]);

	return 0;

                        Solution in Java :

In    Java  :

import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int rounds = input.nextInt();
        int[] ar = new int[rounds];
        int i = 0;
        for(i = 0; i < rounds; i++)
            ar[i] = input.nextInt();
        int count = 0;
        i = 0;
        while(i != rounds-1)
            if(i != ar.length - 2 && ar[i+2] == 0)

                        Solution in Python : 
In  Python3   :


import math
import os
import random
import re
import sys

# Complete the jumpingOnClouds function below.
def jumpingOnClouds(c):
    i = 0
    jumpCount = -1
    while i < len(c):
        jumpCount += 1
        if (i < len(c)-2) and (c[i+2] == 0):
        i += 1
    return jumpCount

if __name__ == '__main__':
    fptr = open(os.environ['OUTPUT_PATH'], 'w')

    n = int(input())

    c = list(map(int, input().rstrip().split()))

    result = jumpingOnClouds(c)

    fptr.write(str(result) + '\n')


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