Application Development Associate

English 20, Quants 20, Reasoning 20, Pseudocode 10, Coding 2

Number Of MCQs - 72

You are given an array 'A' of length 'N' consisting only of integers. You are also given three integers 'X', 'Y' and 'SUM'. Count the number of pairs ('i', 'j') where 'i' < 'j' such that ('A[i]' * 'X' + 'A[j]' * 'Y') = 'SUM'.

Example :

'N' = 3, 'A' = {3, 1, 2, 3}, 'X' = 4, 'Y'= 2, 'SUM' = 14

For 'i' = 1, 'j' = 2, Value of the expression = 4 * 3 + 2 * 1 = 14.
For 'i' = 1, 'j' = 3, Value of the expression = 4 * 3 + 2 * 2 = 16.
For 'i' = 1, 'j' = 4, Value of the expression = 4 * 3 + 2 * 3 = 18.
For 'i' = 2, 'j' = 3, Value of the expression = 4 * 1 + 2 * 2 = 8.
For 'i' = 2, 'j' = 4, Value of the expression = 4 * 1 + 2 * 3 = 10.
For 'i' = 3, 'j' = 4, Value of the expression = 4 * 2 + 2 * 3 = 14.

The possible pairs are :
(1, 3), (3,4)

What are ACID properties, explain?
SQL query to fetch some column from given table.