We draw a person at random from the street. Then we keep drawing people until we find someone taller than the first person. What is the expected number of draws we have to wait?
Developer Java Backend Interview Questions
716,196 developer java backend interview questions shared by candidates
Given a set of points (x,y) and an integer "n", return n number of points which are close to the origin
Given an array A of n integers, in sorted order, and an integer x. design an O(n)-time complexity algorithm to determine whether there are 2 integers in A whose sum is exactly x.
given non-zero number array A, create array B where B[i] = product of all elements in A except A[i].
First explain what a tree, then binary tree, then a binary search tree is. Now implement a function that verifies whether a binary tree is a valid binary search tree.
Write a code for determining the given integer is palindrome in binaries.
I got questions like "Given a dictionary of words, how do you calculate the anagrams for a new word".
Find the longest subarray which consists of numbers that can be arranged in a continuous sequence. For ex- {4,5,1,5,7,6,8,4,1} output-{5,7,6,8,4}.Find the longest.
How would you code up a custom rectangle detector?
how would you design how a cellphone implements its contact list when you press a certain letter. For example, If you press M it will tell you all the names starting with M. then if you press MI it will tell you all names starting from MI and so forth....
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