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swapped order of params, -3 characters using sub!

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edited Sep 9, 2013 at 4:30

2.4k
15
21

Ruby 2.0, 7471 characters

f=->s,g{[x=(0..3).count{|n|s[n]==g[n]},g.chars.count{|e|s[e]&&s[e]=''|e|s.sub!e,''}-x]}

This function actually modifies the first parameter, which is obviously a bit dodgy. Would be easy enough to fix if it's actually against the rules.

I'm sure there's something sneaky you could do with String#count but I couldn't think of a nice way to handle duplicates.

Example usage:

p f['1342'f['1254', '1254']'1342'] #=> [1, 2]
p f['1111'f['1234', '1234']'1111'] #=> [1, 0]
p f['1234'f['5441', '5441']'1234'] #=> [0, 2]
p f['4531'f['5441', '5441']'4531'] #=> [1, 2]
p f['4441'f['5441', '5441']'4441'] #=> [3, 0]
p f['5441', '5441'] #=> [4, 0]

Ruby 2.0, 74 characters

f=->s,g{[x=(0..3).count{|n|s[n]==g[n]},g.chars.count{|e|s[e]&&s[e]=''}-x]}

This function actually modifies the first parameter, which is obviously a bit dodgy. Would be easy enough to fix if it's actually against the rules.

I'm sure there's something sneaky you could do with String#count but I couldn't think of a nice way to handle duplicates.

Example usage:

p f['1342', '1254'] #=> [1, 2]
p f['1111', '1234'] #=> [1, 0]
p f['1234', '5441'] #=> [0, 2]
p f['4531', '5441'] #=> [1, 2]
p f['4441', '5441'] #=> [3, 0]
p f['5441', '5441'] #=> [4, 0]

Ruby 2.0, 71 characters

f=->s,g{[x=(0..3).count{|n|s[n]==g[n]},g.chars.count{|e|s.sub!e,''}-x]}

This function actually modifies the first parameter, which is obviously a bit dodgy. Would be easy enough to fix if it's actually against the rules.

I'm sure there's something sneaky you could do with String#count but I couldn't think of a nice way to handle duplicates.

Example usage:

p f['1254', '1342'] #=> [1, 2]
p f['1234', '1111'] #=> [1, 0]
p f['5441', '1234'] #=> [0, 2]
p f['5441', '4531'] #=> [1, 2]
p f['5441', '4441'] #=> [3, 0]
p f['5441', '5441'] #=> [4, 0]

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created Sep 9, 2013 at 4:25

Paul Prestidge

2.4k
15
21

Ruby 2.0, 74 characters

f=->s,g{[x=(0..3).count{|n|s[n]==g[n]},g.chars.count{|e|s[e]&&s[e]=''}-x]}

This function actually modifies the first parameter, which is obviously a bit dodgy. Would be easy enough to fix if it's actually against the rules.

I'm sure there's something sneaky you could do with String#count but I couldn't think of a nice way to handle duplicates.

Example usage:

p f['1342', '1254'] #=> [1, 2]
p f['1111', '1234'] #=> [1, 0]
p f['1234', '5441'] #=> [0, 2]
p f['4531', '5441'] #=> [1, 2]
p f['4441', '5441'] #=> [3, 0]
p f['5441', '5441'] #=> [4, 0]