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def is_palindrome(string): # [too-many-lines]
left_pos = 0
right_pos = len(string) - 1
while right_pos >= left_pos:
if not string[left_pos] == string[right_pos]:
return False
left_pos += 1
right_pos -= 1
return True
def main():
print(isPalindrome("aza"))
print(isPalindrome("racecar"))
print(isPalindrome("trigger"))
print(isPalindrome("ogre"))
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