Alternates in an Array · Interview Problem

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GeeksforGeeks

print-alternate-elements-of-an-array

Easy

Arrays

Alternates in an Array

Print alternate elements of an array starting from the first element.

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Alternate Elements of Array

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Problem Statement

Core description from the backend problem record.

Description

Given an array, print all alternate elements of the array i.e., elements at even indices starting with index 0.

Input Format

The first line contains an integer T denoting the number of test cases. Each test case consists of two lines:

The first line contains an integer N denoting the size of the array.
The second line contains N space-separated integers denoting the elements of the array.

Output Format

For each test case, print the alternate elements of the array separated by spaces.

Constraints

1 <= T <= 100 1 <= N <= 10^4 0 <= arr[i] <= 10^5

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