Testdome Java Questions And Answers Online

ArrayDeque offers O(1) insertion/removal at both ends. LinkedList would also work but uses more memory. Returning -1 on empty deque is specific to TestDome's hidden expectations. 3. The "Quadratic Equation" Problem (Precision & Edge Cases) Prompt: Implement the findRoots function to return the roots of ax² + bx + c = 0. Return roots in ascending order as a double array. Handle complex roots by returning null .

// Returns true if string is palindrome, ignoring case and non-alphanumeric public static boolean isPalindrome(String s) // Write solution using two pointers testdome java questions and answers

Good luck, and may your tests always pass in O(n log n) time. ArrayDeque offers O(1) insertion/removal at both ends