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Generators

Pseudo-random number generator without repetition

Calculator generates random numbers without repetition from 0 to n-1.        


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SHA-2 generator

Generates a message using SHA-2 algorithm.
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Generators

MD5 generator

Jak wygenerować skrót wiadomości z użyciem algorytmu MD5?
Generates a message using MD5 algorithm.
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Generators

SHA-1 generator

Jak wygenerować skrót wiadomości z użyciem algorytmu SHA-1?
Generates a message using SHA-1 algorithm.
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Insulation of wall

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Calculator allows you to calculate the amount of insulation panels needed to cover the walls of the building using the "light wet" or "dry light" methods.
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Financial

Net return on sales (ROS)

Calculator based on the values ​​entered and net profit calculated return on sales ROS. ROS announces net income (after tax), attributable to every penny of products, goods and services.            
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Information technology

Caesar cipher

Calculator specified key encrypts the text using the Caesar cipher. Are accepted only letters, other characters are ignored.        
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Math

Whether a number is prime

Checks the user number is a prime number.
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Verifiers

Verification of the social security number in Poland

It presents data deriving from the unique social security number, such as date of birth, sex, serial number and check its correctness.