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Function std.algorithm.sorting.nthPermutationImpl

bool nthPermutationImpl(Range) (
  auto ref Range range,
  ulong perm
if (isRandomAccessRange!Range && hasLength!Range);


true in case the permutation worked, false in case perm had more digits in the factorial number system than range had elements. This case must not occur as this would lead to out of range accesses.


auto src = [0, 1, 2, 3, 4, 5, 6];
auto rslt = [4, 0, 6, 2, 1, 3, 5];

bool worked = nthPermutationImpl(src, 2982);
writeln(src); // rslt


Andrei Alexandrescu


Boost License 1.0.