Given a string with parenthesis like "()()(()(()()", check to see if there are matching pairs. If there are matching pairs, return true, else return false. For example, ()()() returns true, ()()()) returns false.
Programmer Intern Interview Questions
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Given a list of 4 billion integers, find an integer not in the list using 4MB of memory.
Suppose you have a matrix of numbers. How can you easily compute the sum of any rectangle (i.e. a range [row_start, row_end, col_start, col_end]) of those numbers? How would you code this?
Find Kth smallest element in a BST.
Generate a new array from an array of numbers. Start from the beginning. Put the number of some number first, and then that number. For example, from array 1, 1, 2, 3, 3, 1 You should get 2, 1, 1, 2, 2, 3, 1, 1 Write a program to solve this problem.
Write a function that takes 2 arguments: a binary tree and an integer n, it should return the n-th element in the inorder traversal of the binary tree.
How many unique handshakes if each person in a group of 10 give handshakes out to each and every other individual. (a) 100 (b) 50 (c) 45 (d) 20 (e) 10
The first coding question was to determine whether a list of integers with size N, contains all the numbers from one to N.
Given a sorted array, where each element but one occurs only once, return the element that repeats. (For example, given 1, 2, 3, 3, 4, return 3. Given 1, 2, 3, 4, 6, 6, 7, 8, 9, return 6.)
Coding Challenge 3) You are given a linkedlist with next and arbitary pointers. Create a new linkedlist similar to the given linkedlist. You need to create a code for deep copy of a linkedlist.
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