Vocabulary

math.combinatorics

Inputs

Outputs

Word description

Outputs the mth lexicographical combination of seq choosing k elements.

Notes

Combinations are 0-based and a bounds error will be thrown if m is larger than seq length k nCk.

Examples

Definition

math.combinatorics

Inputs

m | a non-negative integer |

seq | a sequence |

k | a non-negative integer |

Outputs

seq' | a sequence |

Word description

Outputs the mth lexicographical combination of seq choosing k elements.

Notes

Combinations are 0-based and a bounds error will be thrown if m is larger than seq length k nCk.

Examples

USING: math.combinatorics sequences prettyprint ;
6 7 <iota> 4 combination .

{ 0 1 3 6 }

{ 0 1 3 6 }

USING: math.combinatorics prettyprint ;
0 { "a" "b" "c" "d" } 2 combination .

{ "a" "b" }

{ "a" "b" }

Definition