Given an array of unsorted integers, determine which number appears most often.
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Given two very large binary trees T1, with millions of nodes, and T2, with hun- dreds of nodes, create an algorithm to decide if T2 is a subtree of T1.
find if 2 strings are anagrams
Identify pairs of integers in an array which sum to a specified x.
How to detect loops in a linked list without using a data structure
Write out merge sort and apply it to two arrays of integers.
Given a matrix of integers, start from any column of the first row. can only move diagonally left, diagonally right and down. find the max sum possible. This is a DP problem.
Given a string that has various brackets (e.g. “{“, “(“, “[“, “}”, “)”, “]”) built into it, how would one tell that the string has a balanced number of brackets and in order?
Find 2 or more missing numbers in a set of 100 natural numbers
You have 10 boxes of balls (each ball weighing exactly10 gm) with one box with defective balls (each one of the defective balls weigh 9 gm). You are given an electronic weighing machine and only one chance at it. How will find out which box has the defective balls?
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