version 1.114, 2006/07/27 22:56:37
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version 1.115, 2006/07/28 15:22:28
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Line 208 sub implicit_multiplication {
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Line 208 sub implicit_multiplication {
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# Fill in multiplication signs |
# Fill in multiplication signs |
# a b -> a*b;3 b -> 3*b;3 4 -> 3*4 |
# a b -> a*b;3 b -> 3*b;3 4 -> 3*4 |
$expression=~s/(\w)\s+(\w)/$1\*$2/gs; |
$expression=~s/(\w)\s+(\w)/$1\*$2/gs; |
# 3a -> 3*a; 3( -> 3*(; 3A -> 3*a |
# )( -> )*(; ) ( -> )*( |
$expression=~s/(\d)([a-zA-Z\(])/$1\*$2/gs; |
$expression=~s/\)\s*\(/\)\*\(/gs; |
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# 3a -> 3*a; 3( -> 3*(; 3 ( -> 3*(; 3A -> 3*A |
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$expression=~s/(\d)\s*([a-zA-Z\(])/$1\*$2/gs; |
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# a ( -> a*( |
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$expression=~s/(\w)\s+\(/$1\*\(/gs; |
# a3 -> a*3; |
# a3 -> a*3; |
$expression=~s/([a-zA-Z])(\d)/$1\*$2/gs; |
$expression=~s/([a-zA-Z])(\d)/$1\*$2/gs; |
# )a -> )*a; )3 -> )*3 |
# )a -> )*a; )3 -> )*3; ) 3 -> )*3 |
$expression=~s/\)(\w)/\)\*$1/gs; |
$expression=~s/\)\s*(\w)/\)\*$1/gs; |
# 3&8 -> 3e8; 3&-4 -> 3e-4 |
# 3&8 -> 3e8; 3&-4 -> 3e-4 |
$expression=~s/(\d+)\&\(([\+\-]*\d+)\)/$1e$2/gs; |
$expression=~s/(\d+)\&\(([\+\-]*\d+)\)/$1e$2/gs; |
return $expression; |
return $expression; |