Guess the number/With feedback (player): Difference between revisions
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(→{{header|Ruby}}: Added example using bsearch, the binary search method.) |
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guessing 29 too low |
guessing 29 too low |
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guessing 30 found the number in 7 turns.</pre> |
guessing 30 found the number in 7 turns.</pre> |
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Since Ruby 2.0 it can be done actually using a binary search (output as above): |
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<lang ruby>r = (1..100) |
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secret = rand(r) |
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turns = 0 |
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puts "Guess a number between #{r.min} ans #{r.max}" |
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r.bsearch do |guess| # bsearch works on ranges |
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turns += 1 |
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low_high = secret <=> guess # -1, 0, or 1 |
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msg = ["found the number in #{turns} turns","too low", "too high"][low_high] |
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puts "Guessing #{guess} \t #{msg}" |
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low_high |
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end |
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<lang> |
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=={{header|Rust}}== |
=={{header|Rust}}== |
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