Python Map | Length of the Longest Consecutive 1’s in Binary Representation of a given integer
Given a number n, find length of the longest consecutive 1s in its binary representation.
Examples:
Input : n = 14 Output : 3 The binary representation of 14 is 1110. Input : n = 222 Output : 4 The binary representation of 222 is 11011110.
We have existing solution for this problem please refer Length of the Longest Consecutive 1s in Binary Representation link. We can solve this problem quickly in python. Approach is very simple,
- Convert decimal number into it’s binary using bin() function and remove starting first two characters ‘0b’ because bin() function returns binary representattion of number in string form and appends ‘0b’ as prefix.
- Separate all sub-strings of consecutive 1’s separated by zeros using split() method of string.
- Print maximum length of splitted sub-strings of 1’s.
# Function to find Length of the Longest Consecutive # 1's in Binary Representation def maxConsecutive1(input): # convert number into it's binary input = bin(input) # remove first two characters of output string input = input[2:] # input.split('0') --> splits all sub-strings of # consecutive 1's separated by 0's, output will # be like ['11','1111'] # map(len,input.split('0')) --> map function maps # len function on each sub-string of consecutive 1's # max() returns maximum element from a list print (max(map(len, input.split('0')))) # Driver program if __name__ == '__main__': input = 222 maxConsecutive1(input) |
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Output:
4
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