arr = ["apple", "banana", "orange", "kiwi"] # Swap first and last characters of each string for i in range(len(arr)): if len(arr[i]) > 1: # Check if the string has at least 2 characters arr[i] = arr[i][-1] + arr[i][1:-1] + arr[i][0] print(arr) # Output: ['eappl', 'aananb', 'eorang', 'iwiik']