Java question was around String pattern searching which you can do easily in around 20 minutes, if you can keep your mind calm where that clock is also ticking.
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Excel Sheet Problem: Given a String in method return the column number. Or in other words, convert Excel column number in integer. Input: "A" Output: 1 Input: "AA" Output: 27 Explaination: Column A is very first column in Excel, so return 1.
Given an ordered large array of integers, find all pairs of numbers that add up to a particular given sum.
count the 1s in an integer
2 medium questions and 1 hard
From SQL: 1. If there are 2 tables with m and n rows respectively, then what will be the minimum and maximum number of rows in all the joins. 2. Get the 3rd highest employee salary from employee salary table. 3. Given a product table, the new record gets appended in table with the new timestamp for the product ID. Find out the latest row for that particular product with or without analytical functions. 4. Given there are 2 tables of employee details and employee project details, which all employee are not yet assigned a project. For python: 1. Given a product data frame, the new record gets appended in table with the new timestamp for the product ID. Find out the latest data frame for that particular product with pandas.
SQL question: 1 table with player_id, log in date, and 2 other fields and was asked to calculate first day retention rate. First day retention rate is defined as the player who log in the 2nd straight day, after the first ever time they log into game.
Write an algorithm to return the intersect of two arrays.
Given an array of integers, how would you move the duplicate integers into a different array? What is the efficiency of your algorithm?
Q3) Few questions on design patterns(Interpreter/ Observer/State) etc.
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