Cody

# Problem 793. Combinations without using nchoosek

Solution 2211600

Submitted on 14 Apr 2020 by Christian Zünd
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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 m = your_fcn_name(n) m = double.empty(0,2); for i = 1:n for j = i+1:n m = vertcat(m,[i,j]); end end end %This code written by profile_id 17996048 '

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 m = your_fcn_name(n) m = double.empty(0,2); for i = 1:n for j = i+1:n m = vertcat(m,[i,j]); end end end %This code written by profile_id 17996048 '

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 m = your_fcn_name(n) m = double.empty(0,2); for i = 1:n for j = i+1:n m = vertcat(m,[i,j]); end end end %This code written by profile_id 17996048 '

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 m = your_fcn_name(n) m = double.empty(0,2); for i = 1:n for j = i+1:n m = vertcat(m,[i,j]); end end end %This code written by profile_id 17996048 '