Abstract

The read in an array problem from HackerRank.

Read in an Array

Problem

Read in an Array

Given a list of countries, each on a new line, your task is to read them into an array and then display the entire array, with a space between each of the countries’ names.

Recommended References

Here’s a great tutorial tutorial with useful examples related to arrays in Bash.

Input Format

A list of country names. The only characters present in the country names will be upper or lower-case characters and hyphens.

Output Format

Display the entire array of country names, with a space between each of them.

Sample Input

Namibia
Nauru
Nepal
Netherlands
NewZealand
Nicaragua
Niger
Nigeria
NorthKorea
Norway

Sample Output

Namibia Nauru Nepal Netherlands NewZealand Nicaragua Niger Nigeria NorthKorea Norway

Explanation

The entire array has been displayed.

Solution

read-in-an-array.sh

#!/usr/bin/env bash

# shellcheck disable=SC2162
while read array_line; do
    country_array+=("${array_line}")
done

for country in "${country_array[@]}"; do
    printf "%s " "${country}"
done

Section author: Xander Harris xandertheharris@gmail.com