Digital root/Multiplicative digital root: Difference between revisions
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Revision as of 14:38, 4 December 2021
, 2 years agoAdd CLU
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</pre>
=={{header|CLU}}==
<lang clu>digits = iter (n: int) yields (int)
while n>0 do
yield(n//10)
n := n/10
end
end digits
mdr = proc (n: int) returns (int,int)
i: int := 0
while n>=10 do
m: int := 1
for d: int in digits(n) do
m := m * d
end
n := m
i := i+1
end
return (i,n)
end mdr
first_mdr = iter (target_mdr, n: int) yields (int)
i: int := 0
while n>0 do
x, m: int := mdr(i)
if m=target_mdr then
yield(i)
n := n -1
end
i := i+1
end
end first_mdr
start_up = proc ()
po: stream := stream$primary_output()
nums: sequence[int] := sequence[int]$[123321, 7739, 893, 899998]
stream$putl(po, " N MDR MP")
stream$putl(po, "====== === ==")
for num: int in sequence[int]$elements(nums) do
stream$putright(po, int$unparse(num), 6)
stream$puts(po, " ")
i, m: int := mdr(num)
stream$putright(po, int$unparse(m), 3)
stream$puts(po, " ")
stream$putright(po, int$unparse(i), 3)
stream$putl(po, "")
end
stream$putl(po, "\nMDR: [n0..n4]")
stream$putl(po, "=== ========")
for dgt: int in int$from_to(0,9) do
stream$putright(po, int$unparse(dgt), 3)
stream$puts(po, ": ")
for num: int in first_mdr(dgt, 5) do
stream$puts(po, int$unparse(num) || " ")
end
stream$putl(po, "")
end
end start_up</lang>
{{out}}
<pre> N MDR MP
====== === ==
123321 8 3
7739 8 3
893 2 3
899998 0 2
MDR: [n0..n4]
=== ========
0: 0 10 20 25 30
1: 1 11 111 1111 11111
2: 2 12 21 26 34
3: 3 13 31 113 131
4: 4 14 22 27 39
5: 5 15 35 51 53
6: 6 16 23 28 32
7: 7 17 71 117 171
8: 8 18 24 29 36
9: 9 19 33 91 119</pre>
=={{header|Common Lisp}}==
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