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occurred Sep 17, 2020 at 12:00

fix typo

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edited Sep 17, 2020 at 4:23

<< Combinatorica`
Permutations[Range[0, 9]][[1000000]] // AbsoluteTiming
Nest[NextPermutation, Range[0, 9], 1*^6 - 1] // AbsoluteTiming

I want to save memory, so I tryiedtried NextPermutation ,but it's kind of slow, why?

<< Combinatorica`
Permutations[Range[0, 9]][[1000000]] // AbsoluteTiming
Nest[NextPermutation, Range[0, 9], 1*^6 - 1] // AbsoluteTiming

I want to save memory, so I tryied NextPermutation ,but it's kind of slow, why?

<< Combinatorica`
Permutations[Range[0, 9]][[1000000]] // AbsoluteTiming
Nest[NextPermutation, Range[0, 9], 1*^6 - 1] // AbsoluteTiming

I want to save memory, so I tried NextPermutation ,but it's kind of slow, why?

title grammar

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edited Sep 16, 2020 at 10:33

Why doesis NextPermutation slow?

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asked Sep 16, 2020 at 5:50

Why does NextPermutation slow?

<< Combinatorica`
Permutations[Range[0, 9]][[1000000]] // AbsoluteTiming
Nest[NextPermutation, Range[0, 9], 1*^6 - 1] // AbsoluteTiming

I want to save memory, so I tryied NextPermutation ,but it's kind of slow, why?