# HackerRank Compute the Average problem solution

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
#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

sum=0
for i in `seq 1 \$x`
do
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"
```