Abstract

The fourth paste problem from HackerRank.

paste 4

Problem

Paste - 4

Given a CSV file where each row contains the name of a city and its state separated by a comma, your task is to restructure the file in such a way, that three consecutive rows are folded into one, and separated by tab.

Input Format

You are given a CSV file where each row contains the name of a city and its state separated by a comma.

Output Format

Restructure the file in such a way, that every group of three consecutive rows are folded into one, and separated by tab.

Sample Input

Albany, N.Y.
Albuquerque, N.M.
Anchorage, Alaska
Asheville, N.C.
Atlanta, Ga.
Atlantic City, N.J.
Austin, Texas
Baltimore, Md.
Baton Rouge, La.
Billings, Mont.
Birmingham, Ala.
Bismarck, N.D.
Boise, Idaho
Boston, Mass.
Bridgeport, Conn.

Sample Output

Albany, N.Y.    Albuquerque, N.M.   Anchorage, Alaska
Asheville, N.C. Atlanta, Ga.    Atlantic City, N.J.
Austin, Texas   Baltimore, Md.  Baton Rouge, La.
Billings, Mont. Birmingham, Ala.    Bismarck, N.D.
Boise, Idaho    Boston, Mass.   Bridgeport, Conn.

Explanation

The given input file has been reshaped as required.

Solution

paste-4.sh

#!/usr/bin/env bash

# shellcheck disable=SC2162
paste -s -d '\t\t\n' -