Python - K length consecutive characters

Python - K length consecutive characters

In this tutorial, we will discuss how to generate strings consisting of k consecutive characters from a given starting character.

Problem Statement:

Given a starting character and an integer k, generate a string that has k consecutive characters starting from the given character.

Approach:

  1. Convert the starting character to its ASCII value using the ord() function.
  2. Use a loop or list comprehension to get the next k consecutive characters in the ASCII sequence.
  3. Convert the sequence back to characters using the chr() function.
  4. Join and return the consecutive characters as a single string.

Python Code:

def k_length_consecutive_chars(start_char, k): """ Generate a string of k consecutive characters starting from the given character. :param start_char: str - The starting character (should be of length 1) :param k: int - Number of consecutive characters needed :return: str - String of k consecutive characters """ if len(start_char) != 1: raise ValueError("The starting character should be a single character") # Generate list of k consecutive characters starting from start_char consecutive_chars = [chr(ord(start_char) + i) for i in range(k)] # Convert the list of characters to a single string and return return ''.join(consecutive_chars) # Example usage: start_char = 'a' k = 5 print(k_length_consecutive_chars(start_char, k)) # Output: 'abcde'

Explanation:

  1. We ensure the start_char is a single character; otherwise, we raise a ValueError.
  2. Using list comprehension, we generate a list of k consecutive characters starting from the given start_char.
  3. The ord() function gives the ASCII value of a character, and the chr() function does the reverse, converting an ASCII value to its corresponding character.
  4. We then join the list of characters into a single string using join() and return it.

This approach allows us to efficiently generate strings of k consecutive characters from any given starting character.

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sql-server-group-concat android-sdcard runonce wildfly-10 javax.validation gradle-properties keyboard itext windows-update viewport-units

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