Cody

Problem 793. Combinations without using nchoosek

Solution 318799

Submitted on 13 Sep 2013 by Jan Orwat
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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(n) []; for k=1:n-1, [ans; k*(k+1:n|1)' (k+1:n)']; end end %This code written by profile_id 4345310

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(n) []; for k=1:n-1, [ans; k*(k+1:n|1)' (k+1:n)']; end end %This code written by profile_id 4345310

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(n) []; for k=1:n-1, [ans; k*(k+1:n|1)' (k+1:n)']; end end %This code written by profile_id 4345310

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(n) []; for k=1:n-1, [ans; k*(k+1:n|1)' (k+1:n)']; end end %This code written by profile_id 4345310