- Added solutions by Ulrich Rieke.

- Added solutions by Eric Cheung.
- Added solutions by Laurent Rosenfeld.
- Added solutions by E. Choroba.
- Added solutions by Niels van Dijke.
- Added solutions by Luca Ferrari.
- Added solutions by Mark Anderson.
- Added solutions by Stephen G Lynn.
- Added solutions by Peter Meszaros.
- Added solutions by Thomas Kohler.
- Added solutions by W. Luis Mochan.
- Added solutions by David Ferrone.
- Added solutions by Steven Wilson.
- Added solutions by Dave Jacoby.
- Added solutions by Robbie Hatley.
- Added solutions by Peter Campbell Smith.
- Added solutions by Arne Sommer.
- Added solutions by PokGoPun.
- Added solutions by Roger Bell_West.

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diff --git a/challenge-254/eric-cheung/python/ch-2.py b/challenge-254/eric-cheung/python/ch-2.py
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+

+## Reference

+## https://www.w3resource.com/python-exercises/basic/python-basic-1-exercise-71.php

+## https://www.geeksforgeeks.org/reverse-vowels-given-string/

+

+## strInput = "Raku"  ## Example 1

+## strInput = "Perl"  ## Example 2

+## strInput = "Julia"  ## Example 3

+strInput = "Uiua"  ## Example 4

+

+arrVowel = [charLoop for charLoop in strInput.lower() if charLoop in ["a", "e", "i", "o", "u"]]

+

+strOutput = ""

+

+for nIndx, charLoop in enumerate(strInput.lower()):

+    if charLoop in ["a", "e", "i", "o", "u"]:

+        strOutput = strOutput + arrVowel[-1]

+        del arrVowel[-1]

+    else:

+        strOutput = strOutput + charLoop

+

+strOutput = strOutput.title()

+

+print (strOutput)