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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
199093 changed files with 3378972 additions and 0 deletions
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4
Task/Modular-exponentiation/Ruby/modular-exponentiation-1.rb Normal file
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a = 2988348162058574136915891421498819466320163312926952423791023078876139
b = 2351399303373464486466122544523690094744975233415544072992656881240319
m = 10**40
puts a.pow(b, m)

5
Task/Modular-exponentiation/Ruby/modular-exponentiation-2.rb Normal file
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require 'openssl'
a = 2988348162058574136915891421498819466320163312926952423791023078876139
b = 2351399303373464486466122544523690094744975233415544072992656881240319
m = 10 ** 40
puts a.to_bn.mod_exp(b, m)

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Task/Modular-exponentiation/Ruby/modular-exponentiation-3.rb Normal file
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def mod_exp(n, e, mod)
fail ArgumentError, 'negative exponent' if e < 0
prod = 1
base = n % mod
until e.zero?
prod = (prod * base) % mod if e.odd?
e >>= 1
base = (base * base) % mod
end
prod
end