Language: R

Sets

Creating sets

Example:

x <- c(1,2,5)
y <- c(5,1,8,9)

Operations

union(x,y)

Union of the sets x and y

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intersect(x,y)

Intersection of the sets x and y

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setdiff(x,y)

Set difference between x and y, consisting of all elements of x that are not in y

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setequal(x,y)

Test for equality between x and y

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c %in% y

Membership, testing whether c is an element of the set y

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choose(n,k)

Number of possible subsets of size k chosen from a set of size n