Cody

Problem 793. Combinations without using nchoosek

Solution 2352428

Submitted on 24 May 2020 by Jamal Nasir
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Test Suite

Test Status Code Input and Output
1   Pass
n = 3; y_correct = nchoosek(1:n,2); assert(isequal(your_fcn_name(n),y_correct)) % Prevents cheating filetext = fileread('your_fcn_name.m') assert(isempty(strfind(filetext, 'nchoosek')))

a = 1 2 3 y = [] filetext = 'function output = your_fcn_name(n) a=1:n y=[] for i=1:n-1 for j=i+1:n y=[y; a(i),a(j)]; end end output=y; end %This code written by profile_id 6715979 '
2   Pass
n = 25; y_correct = nchoosek(1:n,2); assert(isequal(your_fcn_name(n),y_correct)) filetext = fileread('your_fcn_name.m') assert(isempty(strfind(filetext, 'nchoosek')))

a = 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 y = [] filetext = 'function output = your_fcn_name(n) a=1:n y=[] for i=1:n-1 for j=i+1:n y=[y; a(i),a(j)]; end end output=y; end %This code written by profile_id 6715979 '
3   Pass
n = 112; y_correct = nchoosek(1:n,2); assert(isequal(your_fcn_name(n),y_correct)) filetext = fileread('your_fcn_name.m') assert(isempty(strfind(filetext, 'nchoosek')))

a = Columns 1 through 30 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Columns 31 through 60 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 Columns 61 through 90 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 Columns 91 through 112 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 y = [] filetext = 'function output = your_fcn_name(n) a=1:n y=[] for i=1:n-1 for j=i+1:n y=[y; a(i),a(j)]; end end output=y; end %This code written by profile_id 6715979 '
4   Pass
n = 2 y_correct = nchoosek(1:n,2); assert(isequal(your_fcn_name(n),y_correct)) filetext = fileread('your_fcn_name.m') assert(isempty(strfind(filetext, 'nchoosek')))

n = 2 a = 1 2 y = [] filetext = 'function output = your_fcn_name(n) a=1:n y=[] for i=1:n-1 for j=i+1:n y=[y; a(i),a(j)]; end end output=y; end %This code written by profile_id 6715979 '

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