Matrix transposition: Difference between revisions
Content added Content deleted
m (→{{header|Tcl}}: Improve the matrix printer to the level used in the QR decomposition task) |
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| Line 1,569: | Line 1,569: | ||
return $new |
return $new |
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} |
} |
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proc print_matrix {m} { |
proc print_matrix {m {fmt "%.17g"}} { |
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set max [widest $m] |
set max [widest $m $fmt] |
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lassign [size $m] rows cols |
lassign [size $m] rows cols |
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for {set i 0} {$i < $rows} {incr i} { |
for {set i 0} {$i < $rows} {incr i} { |
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for {set j 0} {$j < $cols} {incr j} { |
for {set j 0} {$j < $cols} {incr j} { |
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set s [format $fmt [lindex $m $i $j]] |
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puts -nonewline [format "%*s " [lindex $max $j] $s] |
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} |
} |
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puts "" |
puts "" |
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} |
} |
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} |
} |
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proc widest {m} { |
proc widest {m {fmt "%.17g"}} { |
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lassign [size $m] rows cols |
lassign [size $m] rows cols |
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set max [lrepeat $cols 0] |
set max [lrepeat $cols 0] |
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for {set i 0} {$i < $rows} {incr i} { |
for {set i 0} {$i < $rows} {incr i} { |
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for {set j 0} {$j < $cols} {incr j} { |
for {set j 0} {$j < $cols} {incr j} { |
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set s [format $fmt [lindex $m $i $j]] |
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lset max $j [max [lindex $max $j] [string length $s]] |
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} |
} |
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} |
} |
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| Line 1,591: | Line 1,593: | ||
set m {{1 1 1 1} {2 4 8 16} {3 9 27 81} {4 16 64 256} {5 25 125 625}} |
set m {{1 1 1 1} {2 4 8 16} {3 9 27 81} {4 16 64 256} {5 25 125 625}} |
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print_matrix $m |
print_matrix $m "%d" |
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print_matrix [transpose $m]</lang> |
print_matrix [transpose $m] "%d"</lang> |
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outputs |
outputs |
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<pre>1 1 1 1 |
<pre>1 1 1 1 |
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