Python | Ways to determine common prefix in set of strings
Given a set of strings, write a Python program to determine common prefix from a set of strings. Given below are a few methods to solve the above task.
Method #1: Using Naive Approach
# Python code to demonstrate # to find common prefix # from set of strings # Initialising string ini_strlist = ['akshat', 'akash', 'akshay', 'akshita'] # Finding commom prefix using Naive Approach res = '' prefix = ini_strlist[0] for string in ini_strlist[1:]: while string[:len(prefix)] != prefix and prefix: prefix = prefix[:len(prefix)-1] if not prefix: breakres = prefix # Printing result print("Resultant prefix", str(res)) |
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Output:
Resultant prefix ak
Method #2: Using itertools.takewhile and zip
# Python code to demonstrate # to find common prefix # from set of strings from itertools import takewhile # Initialising string ini_strlist = ['akshat', 'akash', 'akshay', 'akshita'] # Finding commom prefix using Naive Approach res = ''.join(c[0] for c in takewhile(lambda x: all(x[0] == y for y in x), zip(*ini_strlist))) # Printing result print("Resultant prefix", str(res)) |
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Output:
Resultant prefix ak
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