Determine if a given string is a palindrome (reads the same forward and backward). Ignore case and consider only alphanumeric characters.
Examples:
Input: text = "racecar"
Output: true
Explanation: Reads the same forward and backward
Input: text = "hello"
Output: false
Explanation: Does not read the same backward
Input: text = "A man a plan a canal Panama"
Output: true
Explanation: Ignoring spaces and case, it is a palindrome
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