Combinatorics I

Curated by : goc3

<div style = "text-align: start; line-height: normal; min-height: 0px; white-space: normal; color: rgb(0, 0, 0); font-family: Menlo, Monaco, Consolas, monospace; font-style: normal; font-size: 14px; font-weight: 400; text-decoration: none solid rgb(0, 0, 0); white-space: normal; "><div style="display: block; min-width: 0px; padding-top: 0px; perspective-origin: 289.5px 10.5px; transform-origin: 289.5px 10.5px; "><div style="font-family: Helvetica, Arial, sans-serif; line-height: 21px; margin-bottom: 9px; margin-left: 4px; margin-right: 10px; margin-top: 2px; text-align: left; white-space: pre-wrap; perspective-origin: 266.5px 10.5px; transform-origin: 266.5px 10.5px; margin-left: 4px; margin-top: 2px; margin-bottom: 9px; margin-right: 10px; "><span style="display: inline; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; margin-top: 0px; perspective-origin: 0px 0px; transform-origin: 0px 0px; "><span style="">Why isn't it k choose n or k choose m or n choose m or ...?</span></span></div></div></div>

Combinatorics I Master

+50 points

Problem Title	Likes	Solvers
Problem 577. Repopulate the City Created by: Ned Gulley Tags factors	4	20
Problem 604. Next lexicographic - permutation Created by: Muthu Annamalai Tags combinatorics, permutations	1	19
Problem 2487. Create Combination Created by: rifat Tags nchoosek	1	30
Problem 793. Combinations without using nchoosek Created by: Aurelien Queffurust Tags nchoosek, combinations	0	66
Problem 44241. NCHOOSEK - Time Optimization Created by: LY Cao Tags combinations, speed optimization	1	24
Problem 1855. Usage of java.math : N Choose K with unlimited precision Created by: Richard Zapor Tags nchoosek, java, bigdecimal	1	21
Problem 1888. Get ranking of a combination Created by: Doug Hull Tags combinations, speed optimization, lexicographic order	1	37
Problem 1889. Get ranking of a combination looking for speed. Created by: Doug Hull Tags speed	1	20
Problem 1516. Put m balls into n boxes Created by: Binbin Qi Tags perms nchoosek unique	1	36
Problem 1517. Put m balls into n boxes (again) Created by: Binbin Qi Tags nchoosek	1	34
Problem 1388. Numbered lottery balls into cells Created by: James Tags permutations, lottery, buckets	0	14
Problem 1393. A (wrong) place for everything, and everything in its (wrong) place Created by: James Tags permutations, organization	1	21
Problem 1147. Possible Outcomes of American Roulette Created by: Robert Turner Tags gamble, payout, odds	0	78
Problem 42494. Which permutation is it? Created by: Jan Orwat Tags indexing, permutations	1	10
Problem 42495. N-th permutation. Created by: Jan Orwat Tags indexing, permutations	1	11

Recent Group Finishers7

Recent Activity

	Jacky QI submitted Solution 4527633 to Problem 2487. Create Combination on 2 Jan 2021 at 17:09
	Jacky QI submitted Solution 4527598 to Problem 2487. Create Combination on 2 Jan 2021 at 17:04
	Jacky QI submitted Solution 4526193 to Problem 1888. Get ranking of a combination on 2 Jan 2021 at 10:50
	Jacky QI submitted Solution 4526173 to Problem 1888. Get ranking of a combination on 2 Jan 2021 at 10:45
	Jacky QI submitted Solution 4526128 to Problem 1888. Get ranking of a combination on 2 Jan 2021 at 10:37

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