Cody

# Problem 793. Combinations without using nchoosek

Solution 587598

Submitted on 24 Feb 2015 by goc3
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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 o = your_fcn_name(n) o = []; for i = 1:(n-1) for j = (i+1):n o = [o; i j]; end end end %This code written by profile_id 5349647

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 o = your_fcn_name(n) o = []; for i = 1:(n-1) for j = (i+1):n o = [o; i j]; end end end %This code written by profile_id 5349647

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 o = your_fcn_name(n) o = []; for i = 1:(n-1) for j = (i+1):n o = [o; i j]; end end end %This code written by profile_id 5349647

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 o = your_fcn_name(n) o = []; for i = 1:(n-1) for j = (i+1):n o = [o; i j]; end end end %This code written by profile_id 5349647