how many zeros are there in 100!
Software Engineer Intern Interview Questions
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Given a binary tree, how would you set the keys/values of all the nodes and their child pointers to null. No language restriction. Do it iteratively in O(N) time with O(1) space complexity where N is the number of nodes in the tree. Other Details: - Tree is just a regular Binary Tree and doesn't have the BST property. - It is not guaranteed to be balanced. - You may do whatever you want to the tree however, you must ensure that all the nodes in the tree and their left/right pointers are set to null.
(over the phone) How to sort an array with millions of entry on a computer with low memory
WAP to find and print second largest digit in the given number? ( without using arrays, functions and using only one loop).
Given a number n, give me a function that returns the nth fibonacci number. Running time, space complexity, iterative vs. recursive.
Write C code that, given number n from the interval [0,32], produce integer number with n least-significant bit sets to 1, and other bits set to 0 (practically, write a decoder).
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You are given a dictionary, such as /usr/share/dict/words, containing a list of words, one per line. You are also given seven tiles. Each tile is either blank or contains a single lowercase letter (a-z). List all of the words from the dictionary that can be produced by using some or all of the seven tiles, in any order. A blank tile is a wildcard, and can be used in place of any letter. Try to use a minimal amount of memory. 1. Find all of the words that can be formed if you don't have to deal with blank tiles. (You may skip this step and go straight to step 2). 2. Find all of the words that can be formed, including those where blank tiles are used as wildcards. 3. Would you do things differently if you had to process several hundred tile sets with the same dictionary?
Given an array and a target value, return true if there is a pair of numbers in the array that sum to this target.
Determine the nth fibonacci number recursively.
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