Today we will see the HackerRank Day 10 Solution in Python. The problem is named Binary Numbers which is part of 30 Days of code on HackerRank. Let’s get started!

## Day 10: Binary Numbers Problem statement

We are given a base-10 integer(n), and we have to convert it to binary (base-2). And then we have to find and print the base-10 integer denoting the maximum number of consecutive 1’s in n’s binary representation.

**Sample Case 1:**

Input: 5

Output: 1

Explanation: The binary representation of 5 is 101, so the maximum number of consecutive 1’s is 1.

**Sample Case 2:**

Input: 13

Output: 1101

Explanation: The binary representation of 13 is 1101, so the maximum number of consecutive 1’s is 2.

You can solve the problem here.

## HackerRank Day 10 Solution in Python

#!/bin/python3 import math import os import random import re import sys if __name__ == '__main__': n = int(input().strip()) #List to store the binary format lst = [] #Convert the number to binary and store in list while n > 0: remainder = n % 2 n = n//2 lst.append(remainder) count = 0 max_count = 0 for bit in lst: #If bit is 1 count value is incremented if bit == 1: count += 1 #If count is greater than max_count, count is assigned to max_count if max_count < count: max_count = count #If bit is not 1 then count becomes 0 else: count = 0 print(max_count)

## Code Explanation:

- We get the input number as n
- We create a list
*lst*to store the binary representation of the number. - Then, we run a loop, till n becomes zero to get the last digits and append them in the list
*lst*. - We create two variables count and max_count to store the current count of one and the maximum count of one respectively.
- Then for every number in the list, we check whether it is equal to one.
- If it is equal to one, then we increment the count value and check if the count is greater than max_count. If the count is greater than max-count then we assign the count value to max_count
- Else we will assign the count value as 0.

- Finally, we print the max_count value which gives us the maximum count of consecutive ones present in the binary representation of the number.

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