Given an associative array grades, how do you create a new associative array passed containing only keys with values >= 50?

hard🚀 Application Q9 of 15

Bash Scripting - Arrays

Given an associative array grades, how do you create a new associative array passed containing only keys with values >= 50?

Adeclare -A passed for k in "${!grades[@]}"; do (( grades[$k] >= 50 )) && passed[$k]=${grades[$k]}; done

Bdeclare -A passed for v in "${grades[@]}"; do if (( v >= 50 )); then passed+=($v); fi; done

Cdeclare -A passed for k in "${grades[@]}"; do if (( k >= 50 )); then passed[$k]=k; fi; done

Ddeclare -A passed passed=(${grades[@]/#>=50/})

Step-by-Step Solution

Solution:

Step 1: Declare new associative array
Use declare -A passed to create an empty associative array.
Step 2: Loop over keys and check values
Loop keys with ${!grades[@]} and check if value >= 50 using arithmetic.
Step 3: Assign passing entries to new array
If condition true, assign passed[$k]=${grades[$k]}.
Final Answer:
Option A correctly filters and assigns passing grades. -> Option A
Quick Check:
Filter associative array by value with loop and condition [OK]

Quick Trick: Filter associative arrays by looping keys and testing values [OK]

Common Mistakes:

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