Zumkeller numbers: Difference between revisions

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→‎{{header|jq}}: rm unused defs
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end
end
| sort) ;
| sort) ;

def sum(s): reduce s as $x (0; . + $x);

# sum of a slice, without any allocation
def sum($i; $j): . as $in | reduce range($i; $j) as $ix (0; . + $in[$ix]);


# If the input is a sorted array of distinct non-negative integers,
# If the input is a sorted array of distinct non-negative integers,