Run Length Encoding in Python

Given an input string, write a function that returns the Run Length Encoded string for the input string. For example, if the input string is 'wwwwaaadexxxxxx', then the function should return 'w4a3d1e1x6'. 

Examples:

Input : str = 'wwwxxxwww'
Output : 'w3x3w3'

This problem has existing solution please refer Run Length Encoding link. In the simplest approach, we iterate through the string, track the current character and count its consecutive occurrences. When a different character is encountered, we append the current character and its count to the result.

Steps:

• Initialize a count variable to 1.
• Traverse the string and count consecutive characters.
• When the character changes, append the character and its count to the result.
• If the string ends, append the last character and its count.

Implementation:

w3x3w3

Using Regular Expressions

This approach uses regex to find consecutive characters and count their occurrences.

Another code: