LeetCode 895. Maximum Frequency Stack
Description https://leetcode.com/problems/maximum-frequency-stack/ Implement FreqStack, a class which simulates the operation of a stack-like data structure. FreqStack has two functions: push(int x), which…
LeetCode 176. Second Highest Salary
Description https://leetcode.com/problems/second-highest-salary/ Write a SQL query to get the second highest salary from the Employee table. +—-+——–+ | Id | Salary |…
Top Questions from Amazon
Total 68 questions. Introduction Top interview questions asked by Amazon as voted by the community. LeetCode compiled this list thoroughly…
LeetCode 152. Maximum Product Subarray
Description https://leetcode.com/problems/maximum-product-subarray/ Given an integer array nums, find the contiguous subarray within an array (containing at least one number) which has…
LeetCode 852. Peak Index in a Mountain Array
Description https://leetcode.com/problems/peak-index-in-a-mountain-array/ Let’s call an array arr a mountain if the following properties hold: arr.length >= 3 There exists some i with 0 < i < arr.length -…
LeetCode 929. Unique Email Addresses
Description https://leetcode.com/problems/unique-email-addresses/ Every email consists of a local name and a domain name, separated by the @ sign. For example,…
LeetCode 973. K Closest Points to Origin
Description https://leetcode.com/problems/missing-ranges/ We have a list of points on the plane. Find the K closest points to the origin (0, 0). (Here, the distance between…
LeetCode 163. Missing Ranges
Description https://leetcode.com/problems/missing-ranges/ You are given an inclusive range [lower, upper] and a sorted unique integer array nums, where all elements are in the inclusive range.…
Get Well Prepared for Google Interview
Total 85 questions. Introduction Google tech interviews are notoriously difficult and quite challenging. To get a phone screen, you will…
LeetCode 169. Majority Element
Description https://leetcode.com/problems/majority-element/ Given an array of size n, find the majority element. The majority element is the element that appears more than ⌊…