Cody

# Problem 793. Combinations without using nchoosek

Solution 132068

Submitted on 29 Aug 2012 by Binbin Qi
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 output = your_fcn_name(n) output = []; for i = 1 : n - 1 for j = i + 1 : n output(end+1,:) = [i,j]; end end end %This code written by profile_id 734801

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 output = your_fcn_name(n) output = []; for i = 1 : n - 1 for j = i + 1 : n output(end+1,:) = [i,j]; end end end %This code written by profile_id 734801

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 output = your_fcn_name(n) output = []; for i = 1 : n - 1 for j = i + 1 : n output(end+1,:) = [i,j]; end end end %This code written by profile_id 734801

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 output = your_fcn_name(n) output = []; for i = 1 : n - 1 for j = i + 1 : n output(end+1,:) = [i,j]; end end end %This code written by profile_id 734801