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String Case Alteration - Solution Explanation

Explore three solutions for altering the case of characters in a string.


Method 1
def solution(s):
    result = ""
    for i in range(len(s)): # Iterate through the length of the string
        if i % 2 == 0: # Even index character to lowercase
            result += s[i].lower() # Convert to lowercase
        else: # Odd index character to uppercase
            result += s[i].upper() # Convert to uppercase
    return result

This function solution takes the input string s and returns a new string where characters at even indices are in lowercase, and characters at odd indices are in uppercase.


Example Usage​

Input/Output Example
input_string = "CoDeFrIeNds"

result = solution(input_string)
print(result)  # Output: "cOdEfRiEnDs"

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