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Pr3Asmnt7.py
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Pr3Asmnt7.py
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def reverseVowels(s: str) -> str:
# Convert the string to a list of characters
s_list = list(s)
# Initialize left and right pointers
left, right = 0, len(s) - 1
# Define set of vowels
vowels = set(['a', 'e', 'i', 'o', 'u', 'A', 'E', 'I', 'O', 'U'])
# Loop until left pointer meets or passes the right pointer
while left < right:
# If left character is not a vowel, move the left pointer
if s_list[left] not in vowels:
left += 1
# If right character is not a vowel, move the right pointer
elif s_list[right] not in vowels:
right -= 1
# If both characters are vowels, swap them and move the pointers
else:
s_list[left], s_list[right] = s_list[right], s_list[left]
left += 1
right -= 1
# Convert the list of characters back to a string and return
return ''.join(s_list)
s = "hello"
print(reverseVowels(s)) # Output: "holle"
s = "leetcode"
print(reverseVowels(s)) # Output: "leotcede"