Update q4.sh

q4/q4.sh

-#!/usr/bin/env bash
-file=`sort -n q4_in.txt`
+#!/bin/bash
+
 i=0
 sum=0
+filename="q4_in.txt"
+declare -a Array
+Array=(`cat "$filename"`)
 
-for var in $file; do
-	sum=$((sum+var))
-	i=$((i+1))
+length=${#Array[@]}
+for (( i = 0 ; i < ${#Array[@]}; i++))
+do
+  sum=$((sum +${Array[$i]}))
+  
 done
 
-rem=$((i%2))
-n=0
-#echo "rem: $rem"
-if [ $rem -eq 0 ]
-then
-	#echo "even"
-	for var in $file; do
-		n=$((n+1))
-		if [ $n -eq $((i/2)) ]
-		then
-			median=$var
-		fi
-	done
-else
-	#echo "odd"
-	for var in $file; do
-		n=$((n+1))
-		if [ $n -eq $(((i/2)+1)) ]
-		then
-			median=$var
-		fi
-	done
+
+echo "scale=2; $sum / $length" | bc
+
+
+
+  
+   
+arr=($(printf '%d\n' "${Array[@]}" | sort -n))
+
+
+if (( $length % 2 == 1 )); then     # Odd number of elements
+	median="${arr[ $(($length/2)) ]}"
+else                            # Even number of elements
+	(( j=length/2 ))
+	(( k=j-1 ))
+	(( median=(${arr[j]} + ${arr[k]})/2 ))
 fi
-#echo "i: $i"
-#echo "sum: $sum"
-echo "$((sum/i))"
 echo "$median"
\ No newline at end of file