In this **HackerRank Compute the Average problem solution** we have given N integers, and compute their average and rounded to three decimal places.

**Input format**

The first line contains an integer N.

Each of the following N lines contains a single integer.

**Output format**

Display the average of the N integers, rounded off to three decimal places.

**Input Constraints**

1 <= N <= 500

-10000 <= x <= 10000 (x refers to elements of the list of integers for which the average is to be computed)

## Problem solution.

read num sum=0 i=0 while [ $i -lt $num ] do read x #sum=$((sum + x)) let sum=sum+x let i=i+1 done printf "%0.3f\n" $(echo "scale=5; $sum / $num" | bc -l)

## Second solution.

#!/bin/bash read x sum=0 for i in `seq 1 $x` do read y sum=$(( $sum+$y )); done sum=`echo $sum/$x | bc -l`; printf "%.3lf\n" $sum

## Third solution.

read N export tot=`awk 'BEGIN {tot=0}; {tot+=$1}; END {print tot}'` export avg=`echo "$tot/$N" | bc -l` #echo $tot $N $avg printf %.3f "$avg"

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