combinatorial number system造句
例句與造句
- The main purpose of the combinatorial number system is to provide a representation, each by a single number, of all \ tbinom nk possible " k "-combinations of a set " S " of " n " elements.
- If moreover the intervals of the integers are taken to start at 0, then the " k "-combination at a given place " i " in the enumeration can be computed easily from " i ", and the bijection so obtained is known as the combinatorial number system.
- The main application of the combinatorial number system is that it allows rapid computation of the " k "-combination that is at a given position in the lexicographic ordering, without having to explicitly list the " k "-combinations preceding it; this allows for instance random generation of " k "-combinations of a given set.
- Unlike the factorial number system, the combinatorial number system of degree " k " is not a mixed radix system : the part \ tbinom { c _ i } i of the number " N " represented by a " digit " " c " " i " is not obtained from it by simply multiplying by a place value.
- If " k " > 1 the remaining elements of the " k "-combination form the-combination corresponding to the number N-\ tbinom { c _ k } k in the combinatorial number system of degree, and can therefore be found by continuing in the same way for N-\ tbinom { c _ k } k and instead of " N " and " k ".
- It's difficult to find combinatorial number system in a sentence. 用combinatorial number system造句挺難的