Given 8 balls and one of them is heavier than the other and also given you a balance. What's the minimum ways to find the heavier ball using the balance?
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Print a Binary Tree level by level
A disc is spinning on a spindle - you don't know which way. You are given a set of pins - describe how you would use them to determine which way the disc is spinning.
Write a function that takes a string as an input and outputs an integer, e.g. turning "1234" into 1234.
You are given 8 identical looking balls. One of them is heavier than the rest of the 7 (all the others weigh exactly the same). You a provided with a simple mechanical balance and you are asked to find out the minimum amount of weighings necessary to identify the heavier ball.
Design an algorithm to search an element in a singly linked list in O(1) complexity without using any other data-structure.
Write a method to compute if a string is a palindrome, disregarding spaces.
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