Bubble Sort

#!/bin/bash
printArray(){
    echo ${a[*]}
}
exchange(){
    temp=${a[$1]}
    a[$1]=${a[$2]}
    a[$2]=$temp
}
bubbleSort(){
    for (( i=0; i<$n; i++ ))
    do
        for(( j=$i; j<$n; j++ ))
        do
          if [ ${a[i]} -gt ${a[j]} ]
            then exchange $i $j
          fi
        done
    done
}
echo "Enter the numbers to be sorted:-"
read -a a
n=${#a[@]}
bubbleSort
printArray