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  1. #!/usr/bin/env bash
  2.  
  3. declare -A totals=( )
  4. while IFS=, read -r category value; do
  5.   (( totals[$category] += value ))
  6. done
  7.  
  8. for category in "${!totals[@]}"; do
  9.   sum=${totals[$category]}
  10.   echo "$category,$sum"
  11. done
Success #stdin #stdout 0s 19632KB
comments (?)
stdin
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Blue,20
Blue,10
Black,13
Red,8
Black,10
Red,10
Blue,21
stdout
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Black,23
Red,18
Blue,30
https://ideone.com/5Ispzj
language:
Bash (bash 5.0.3)
created:
5 years ago
visibility:
public

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