Cody

# Problem 793. Combinations without using nchoosek

Solution 308588

Submitted on 21 Aug 2013 by Paul Berglund
This solution is locked. To view this solution, you need to provide a solution of the same size or smaller.

### 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,100000,2); unique(sort(ans(ans(:,1)~=ans(:,2),:),2),'rows'); end %This code written by profile_id 2758094

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,100000,2); unique(sort(ans(ans(:,1)~=ans(:,2),:),2),'rows'); end %This code written by profile_id 2758094

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,100000,2); unique(sort(ans(ans(:,1)~=ans(:,2),:),2),'rows'); end %This code written by profile_id 2758094

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,100000,2); unique(sort(ans(ans(:,1)~=ans(:,2),:),2),'rows'); end %This code written by profile_id 2758094