Skip to content
Programming101
Programmingoneonone
  • Home
  • CS Subjects
    • Internet of Things (IoT)
    • Digital Communication
    • Human Values
  • Programming Tutorials
    • C Programming
    • Data structures and Algorithms
    • 100+ Java Programs
    • 100+ C Programs
  • HackerRank Solutions
    • HackerRank Algorithms Solutions
    • HackerRank C problems solutions
    • HackerRank C++ problems solutions
    • HackerRank Java problems solutions
    • HackerRank Python problems solutions
Programming101
Programmingoneonone

HackerRank Filter an Array with Patterns problem solution

YASH PAL, 31 July 2024

In this HackerRank Filter an Array with Patterns problem solution We now transition to some basic examples of bash scripting for the purpose of text processing and data munging. In this challenge, we practice reading and filtering an array.

Task

You are given a list of countries, each on a new line. Your task is to read them into an array and then filter out (remove) all the names containing the letter ‘a’ or ‘A’.

Input Format

The input format consists of a list of country names, each on a separate line. The only characters present in the country names will be upper or lower-case characters and hyphens.

Output Format

From the given list, remove the names that contain ‘a’ or ‘A’ in them. If there are no names left after removing these characters, you should display a blank line.

hackerrank filter an array with patterns problem solution

Problem solution.

readarray -t country
echo "${country[@]/*[aA]*/}"|sed 's/^s*//g'

Second solution.

while read n
do
a=("${a[@]}" "$n")
done
temp=( ${a[@]/*a*/} )
echo ${temp[@]/*A*/}

Third solution.

array=()
while read line; do
    array=(${array[@]} $line)
done
filtered=(${array[@]/*a*/})
echo ${filtered[@]}

Fourth solution.

iter=0
while [ 1 ]
do 
read line
if [ -n "$line" ]; then array[$((iter++))]="$line"
else break
fi 
done

for item in ${array[@]}
do
    if [ "$item" = "$(echo $item | grep -wE "[^aA]*")" ]; 
    then echo -n "$item " 
    fi
done

coding problems solutions linux shell

Post navigation

Previous post
Next post

Pages

  • About US
  • Contact US
  • Privacy Policy

Programing Practice

  • C Programs
  • java Programs

HackerRank Solutions

  • C
  • C++
  • Java
  • Python
  • Algorithm

Other

  • Leetcode Solutions
  • Interview Preparation

Programming Tutorials

  • DSA
  • C

CS Subjects

  • Digital Communication
  • Human Values
  • Internet Of Things
  • YouTube
  • LinkedIn
  • Facebook
  • Pinterest
  • Instagram
©2025 Programmingoneonone | WordPress Theme by SuperbThemes