Interview Question

Sum of weights in exponential smoothing is _____.

Two binary trees are considered the same if they are structurally identical, and the nodes have the same value.

Given the roots of two binary trees p and q, write a function to check if they are the same or not.

Given an array of strings strs, group the anagrams together. You can return the answer in any order.

Given a string containing just the characters '(' and ')', find the length of the longest valid (well-formed) parentheses substring.

You are given a set of n types of rectangular 3-D boxes, where the i^th box has height h(i), width w(i) and depth d(i) (all real numbers). You want to create a stack of boxes which is as tall as ...

Given an array of integers nums sorted in ascending order, find the starting and ending position of a given target value. If target is not found in the array, return [-1, -1]. You must write an algorithm with O(log n) runtime complexity.

Given two non-negative integers num1 and num2 represented as strings, return the product of num1 and num2, also represented as a string.

Given a rod of length n inches and an array of prices that includes prices of all pieces of size smaller than n. Determine the maximum value obtainable by cutting up the rod and selling the pieces. For example, if ...

Given n dice each with m faces, numbered from 1 to m, find the number of ways to get sum X. X is the summation of values on each face when all the dice are thrown.