RosettaCodeData/Task/Sudan-function/Jq/sudan-function.jq

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def sudan(n;x;y):
if n == 0 then x+y
elif y == 0 then x
else sudan(n-1; sudan(n;x;y-1); sudan(n;x;y-1) + y)
end;
# For testing and syntactic convenience:
def sudan:
"sudan(\(.[0]); \(.[1]); \(.[2])) => \(sudan(.[0]; .[1]; .[2]))";
# Illustrations
[0,0,0], [1,1,1], [2,1,1], [3,1,1], [2,2,1]
| sudan