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We use imaginary lines to help locate where a place is in the world. the Arctic Circle (the North Pole) the Antarctic Circle (the South Pole) the Tropic of Cancer the Tropic of Capricorn and the ...

// This solution finds the Longest Palindromic Substring in a given string using Dynamic Programming. // A 2D boolean DP table tracks whether substrings are palindromes. // Single characters and equal ...

# Check if characters of the given string can be rearranged to form a palindrome. # Counter is faster for long strings and non-Counter is faster for short strings.