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Matrix transposition: Difference between revisions
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→{{header|REXX}}: added comments, unrolled some DO loops, changed indentation, added whitespace. -- ~~~~
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m (→{{header|REXX}}: added comments, unrolled some DO loops, changed indentation, added whitespace. -- ~~~~) |
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=={{header|REXX}}==
<lang rexx>/*REXX program transposes a matrix, shows before and after matrixes. */
▲x.=''
x.1='1.02 2.03 3.04 4.05 5.06 6.07 7.07'
x.2='111 2222 33333 444444 5555555 66666666 777777777'
do r=1 while x.r\==''
do c=1 while x.r\==''
parse var x.r a.r.c x.r
end /*c*/▼
end /*r*/
rows=r-1; cols=c-1
L=0 /*L is the maximum width element value.*/
do i=1 for rows
do
b.j.i =
end
end
▲ end
call showMat 'A',rows,cols
call showMat 'B',cols,rows
exit /*stick a fork in it, we're done.*/
/*─────────────────────────────────────SHOWMAT subroutine───────────────*/▼
showMat: parse arg mat,rows,cols; say▼
do r=1 for rows; _=
▲/*─────────────────────────────────────SHOWMAT subroutine───────────────*/
do c=1 for cols;
▲showMat: parse arg mat,rows,cols; say
▲say center(mat 'matrix',cols*(L+1)+4,"-")
say _
▲ _=''; do c=1 for cols; _=_ right(value(mat'.'r'.'c),L); end; say _
end /*r*/
return</lang>
'''output'''
<pre style="overflow:scroll">
─────────────────────────────────A matrix─────────────────────────────────
1.02 2.03 3.04 4.05 5.06 6.07 7.07
111 2222 33333 444444 5555555 66666666 777777777
────────B matrix────────
1.02 111
2.03 2222
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