Floating point arthimetic

• Refer Here for floating point arthimetic
• bc command Refer Here

Solving problems in Hacker Rank

• Refer Here
• Flowchart to figure out if the number is prime or not
  
• Program

#!/bin/bash
read -p "Enter Number: " number
index=2
while [[ $index -lt number ]]
do
    REMAINDER=$((number%index))
    if [[ $REMAINDER -eq 0 ]]; then
        echo "$number is not prime"
        exit 1
    fi
    index=$((index+1))
done
echo "$number is prime"

• Sum of numbers

Sample input:
353 => 3+5+3 => 11 => 1+1 => 2
1414 => 1+4+1+4 => 10 => 1+0 => 1
414 => 4+1+4 => 9