Spiral matrix: Difference between revisions
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→{{header|RPL}}: typo
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Line 1,769:
13 22 21 20 7
12 11 10 9 8</syntaxhighlight>
=={{header|EasyLang}}==
<syntaxhighlight>
proc mkspiral n . t[] .
subr side
for i to l
ind += d
t[ind] = cnt
cnt += 1
.
.
len t[] n * n
l = n
while cnt < len t[]
d = 1
side
l -= 1
d = n
side
d = -1
side
l -= 1
d = -n
side
.
.
n = 5
mkspiral n t[]
numfmt 0 3
for i to n * n
write t[i]
if i mod n = 0
print ""
.
.
</syntaxhighlight>
{{out}}
<pre>
0 1 2 3 4
15 16 17 18 5
14 23 24 19 6
13 22 21 20 7
12 11 10 9 8
</pre>
=={{header|Elixir}}==
Line 4,874 ⟶ 4,918:
[http://keptarhely.eu/view.php?file=20220218v00xuh6r2.jpeg Spiral matrix]
=={{header|RPL}}==
{{works with|RPL|HP48-R}}
« { 0 1 } → n step
« { 1 1 } n DUP 2 →LIST -1 CON <span style="color:grey">@ empty cell = -1</span>
1 n SQ '''FOR''' j
OVER j PUT
DUP2 SWAP step ADD
'''IF IFERR''' GET '''THEN''' DROP2 1 '''ELSE''' -1 ≠ '''END''' <span style="color:grey">@ if next step is out of border or an already written cell</span>
'''THEN''' step REVLIST { 1 -1 } * 'step' STO '''END''' <span style="color:grey">@ then turn right</span>
SWAP step ADD SWAP
'''NEXT'''
» » '<span style="color:blue">SPIRAL</span>' STO
5 <span style="color:blue">SPIRAL</span>
{{out}}
<pre>
1: [[1 2 3 4 5]
[16 17 18 19 6]
[15 24 25 20 7]
[14 23 22 21 8]
[13 12 11 10 9]]
</pre>
=={{header|Ruby}}==
Line 5,774 ⟶ 5,841:
{{trans|Go}}
{{libheader|Wren-fmt}}
<syntaxhighlight lang="
var n = 5
| |||