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Leetflex Banned Accounts Problem

LeetCode 1747. Write an SQL query to find the account_id...

10 Feb 2021

Insert Delete GetRandom O(1) Problem

LeetCode 380. Implement a RandomizedSet class.

03 Feb 2021

N-Repeated Element In Size 2N Array Problem

LeetCode 961. In a array A of size 2N, there...

31 Jan 2021

Intersection Of Two Arrays Problem

LeetCode 349. Given two arrays, write a function to compute...

31 Jan 2021

Intersection Of Three Sorted Arrays Problem

LeetCode 1213. Given three integer arrays arr1, arr2 and arr3...

31 Jan 2021

Find Total Time Spent By Each Employee Problem

LeetCode 1741. Write an SQL query to calculate the total...

31 Jan 2021

Jewels And Stones Problem

LeetCode 771. You’re given strings jewels representing the types of...

27 Jan 2021

Number Of Good Pairs Problem

LeetCode 1512. Given an array of integers nums. Return the...

26 Jan 2021

Kth Missing Positive Number Problem

LeetCode 1539. Given an array arr of positive integers sorted...

25 Jan 2021

The Number Of Employees Which Report To Each Employee Problem

LeetCode 1731. Write an SQL query to report the ids...

24 Jan 2021

Find Followers Count Problem

LeetCode 1729. Write an SQL query that will, for each...

20 Jan 2021

MySQL INNER JOIN Clause

The INNER JOIN keyword selects records that have matching values...

09 Jan 2021

MySQL Aliases

Aliases are nicknames. They give us a shorthand way of...

09 Jan 2021

Count Apples And Oranges Problem

LeetCode 1715. Write an SQL query to count the number...

09 Jan 2021

MySQL OR Operator

The OR operator combines two Boolean expressions and returns true...

07 Jan 2021

MySQL LIMIT Operator

The LIMIT clause is used in the SELECT statement to...

07 Jan 2021