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Pseudo-random number generator without repetition
Calculator generates random numbers without repetition from 0 to n-1.
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MD5 generator
Jak wygenerować skrót wiadomości z użyciem algorytmu MD5?
Generates a message using MD5 algorithm.
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SHA-1 generator
Jak wygenerować skrót wiadomości z użyciem algorytmu SHA-1?
Generates a message using SHA-1 algorithm.
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jak obliczyć dzień tygodnia na podstawie daty?
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Rainwater tank
The calculator calculates the amount of collected rainwater from the roof of the given dimensions.
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Verification of the ISSN
Calculator allows you to verify the number entered ISSN (International Standard Serial Number serial publication). FAQ: How ISSN number?
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Mean and covariance matrix calculator
Covariance is a measure of the covariance of two variables (X and Y). The calculator calculates the average for the sample and the covariance between variables. Sets of X and Y must be the same number.
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The harmonic mean
Calculator based on the entered numbers separated by commas calculate the harmonic mean.