Cody

# Problem 793. Combinations without using nchoosek

Solution 317116

Submitted on 10 Sep 2013 by Jean-Marie Sainthillier
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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')))

filetext = function ans = your_fcn_name(x) randi(x,1e6,2); unique(sort(ans(ans(:,1)~=ans(:,2),:),2),'rows'); %This code written by profile_id 343082

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')))

filetext = function ans = your_fcn_name(x) randi(x,1e6,2); unique(sort(ans(ans(:,1)~=ans(:,2),:),2),'rows'); %This code written by profile_id 343082

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')))

filetext = function ans = your_fcn_name(x) randi(x,1e6,2); unique(sort(ans(ans(:,1)~=ans(:,2),:),2),'rows'); %This code written by profile_id 343082

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 filetext = function ans = your_fcn_name(x) randi(x,1e6,2); unique(sort(ans(ans(:,1)~=ans(:,2),:),2),'rows'); %This code written by profile_id 343082