How should I practice Pair Elements with Even Sums?

Start by reading the full statement, solve the visible examples, then compare the pattern against related Deloitte online assessment problems in FastPrep.

Is Pair Elements with Even Sums associated with Deloitte?

FastPrep tags this as a Deloitte online assessment coding practice problem when the problem catalog has that company and stage context.

Problem · Array

Pair Elements with Even Sums

Learn this problem

● Easy

DeloitteNEW GRADOA

Problem statement

You are given an integer array numbers. Pair every element with exactly one other element so that the sum of the two numbers in every pair is even.

Return "YES" if such a complete pairing exists. Otherwise, return "NO".

Function

canPairWithEvenSums(numbers: int[]) → String

Examples

Example 1

numbers = [1,3,2,4]return = "YES"

Pair 1 with 3 and 2 with 4. Both sums are even.

Example 2

numbers = [1,2]return = "NO"

The only possible pair has sum 3, which is odd.

Example 3

numbers = [5,7,9,2]return = "NO"

There are three odd values and one even value. One odd value would have to be paired with an even value, producing an odd sum.

Constraints

1 <= numbers.length <= 100000
-10^9 <= numbers[i] <= 10^9