Is there an easy way to find the lowest and highest number in a set of variables with values? (Bash-CodePudding

#!/usr/bin/bash
for i in {1..10}
do
      read integer”$i”
done
sum=$((integer1 integer2 integer3 integer4 integer5 integer6 integer7 integer8 integer9 integer10))
echo Sum is $sum

I don't know how to find the highest/lowest of the 10 variables and output them.

CodePudding user response：

Compute the sum, max and min on the fly, as you would do in any programming language. And prefer an indexed array to store your integers (and access to their value with ${integer[1]}, ${integer[2]},...:

#!/usr/bin/bash
declare -ai integer=()
declare -i max min sum
for i in {1..10}; do
  read integer[i]
  if (( i == 1 )); then
    max="${integer[i]}"
    min="${integer[i]}"
    sum="${integer[i]}"
  else
    (( max = integer[i] > max ? integer[i] : max ))
    (( min = integer[i] < min ? integer[i] : min ))
    (( sum  = integer[i] ))
  fi
done
printf 'max is %d\n' "$max"
printf 'min is %d\n' "$min"
printf 'sum is %d\n' "$sum"