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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')))
output =
1 2
1 3
2 3
filetext =
'function output = your_fcn_name(n)
function Y = lalala(X)
N = numel(X) ;
if N==1
if isnumeric(X) && X > 1 && X == fix(X)
Y = X*(X-1)/2 ;
else
error('For scalar input, N should be an integer > 1.') ;
end
elseif N == 2
% only two elements
Y = reshape(X, 1, 2) ; % output is a row vector
else % N > 2
% Example for N = 4 ->
V = N-1:-1:2 ; % V : 3 2
R = cumsum([1 V], 2) ; % R : 1 4 6
% Step 1 - create I, filling the two columns (c1 and c2)
I(R,2) = [0 -V] + 1 ; % -> c1: 0 0 0 0 0 0
% c2: 1 0 0 -2 0 -1
% Step 2
I(R,1) = 1 ; % -> c1: 1 0 0 1 0 1
% c2: 1 0 0 -2 0 -1
% Step 3
I(:,2) = I(:,2) + 1 ; % -> c1: 1 0 0 1 0 1
% c2: 2 1 1 -1 1 0
% Step 4
I = cumsum(I, 1) ; % -> c1: 1 1 1 2 2 3
% c2: 2 3 4 3 4 4
% Now we use I to index directly into X to create the output
Y = X(I) ;
end
end
output = lalala(1:n)
end
%This code written by profile_id 7310613
'
|
| 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')))
output =
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
1 11
1 12
1 13
1 14
1 15
1 16
1 17
1 18
1 19
1 20
1 21
1 22
1 23
1 24
1 25
2 3
2 4
2 5
2 6
2 7
2 8
2 9
2 10
2 11
2 12
2 13
2 14
2 15
2 16
2 17
2 18
2 19
2 20
2 21
2 22
2 23
2 24
2 25
3 4
3 5
3 6
3 7
3 8
3 9
3 10
3 11
3 12
3 13
3 14
3 15
3 16
3 17
3 18
3 19
3 20
3 21
3 22
3 23
3 24
3 25
4 5
4 6
4 7
4 8
4 9
4 10
4 11
4 12
4 13
4 14
4 15
4 16
4 17
4 18
4 19
4 20
4 21
4 22
4 23
4 24
4 25
5 6
5 7
5 8
5 9
5 10
5 11
5 12
5 13
5 14
5 15
5 16
5 17
5 18
5 19
5 20
5 21
5 22
5 23
5 24
5 25
6 7
6 8
6 9
6 10
6 11
6 12
6 13
6 14
6 15
6 16
6 17
6 18
6 19
6 20
6 21
6 22
6 23
6 24
6 25
7 8
7 9
7 10
7 11
7 12
7 13
7 14
7 15
7 16
7 17
7 18
7 19
7 20
7 21
7 22
7 23
7 24
7 25
8 9
8 10
8 11
8 12
8 13
8 14
8 15
8 16
8 17
8 18
8 19
8 20
8 21
8 22
8 23
8 24
8 25
9 10
9 11
9 12
9 13
9 14
9 15
9 16
9 17
9 18
9 19
9 20
9 21
9 22
9 23
9 24
9 25
10 11
10 12
10 13
10 14
10 15
10 16
10 17
10 18
10 19
10 20
10 21
10 22
10 23
10 24
10 25
11 12
11 13
11 14
11 15
11 16
11 17
11 18
11 19
11 20
11 21
11 22
11 23
11 24
11 25
12 13
12 14
12 15
12 16
12 17
12 18
12 19
12 20
12 21
12 22
12 23
12 24
12 25
13 14
13 15
13 16
13 17
13 18
13 19
13 20
13 21
13 22
13 23
13 24
13 25
14 15
14 16
14 17
14 18
14 19
14 20
14 21
14 22
14 23
14 24
14 25
15 16
15 17
15 18
15 19
15 20
15 21
15 22
15 23
15 24
15 25
16 17
16 18
16 19
16 20
16 21
16 22
16 23
16 24
16 25
17 18
17 19
17 20
17 21
17 22
17 23
17 24
17 25
18 19
18 20
18 21
18 22
18 23
18 24
18 25
19 20
19 21
19 22
19 23
19 24
19 25
20 21
20 22
20 23
20 24
20 25
21 22
21 23
21 24
21 25
22 23
22 24
22 25
23 24
23 25
24 25
filetext =
'function output = your_fcn_name(n)
function Y = lalala(X)
N = numel(X) ;
if N==1
if isnumeric(X) && X > 1 && X == fix(X)
Y = X*(X-1)/2 ;
else
error('For scalar input, N should be an integer > 1.') ;
end
elseif N == 2
% only two elements
Y = reshape(X, 1, 2) ; % output is a row vector
else % N > 2
% Example for N = 4 ->
V = N-1:-1:2 ; % V : 3 2
R = cumsum([1 V], 2) ; % R : 1 4 6
% Step 1 - create I, filling the two columns (c1 and c2)
I(R,2) = [0 -V] + 1 ; % -> c1: 0 0 0 0 0 0
% c2: 1 0 0 -2 0 -1
% Step 2
I(R,1) = 1 ; % -> c1: 1 0 0 1 0 1
% c2: 1 0 0 -2 0 -1
% Step 3
I(:,2) = I(:,2) + 1 ; % -> c1: 1 0 0 1 0 1
% c2: 2 1 1 -1 1 0
% Step 4
I = cumsum(I, 1) ; % -> c1: 1 1 1 2 2 3
% c2: 2 3 4 3 4 4
% Now we use I to index directly into X to create the output
Y = X(I) ;
end
end
output = lalala(1:n)
end
%This code written by profile_id 7310613
'
|
| 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')))
output =
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
1 11
1 12
1 13
1 14
1 15
1 16
1 17
1 18
1 19
1 20
1 21
1 22
1 23
1 24
1 25
1 26
1 27
1 28
1 29
1 30
1 31
1 32
1 33
1 34
1 35
1 36
1 37
1 38
1 39
1 40
1 41
1 42
1 43
1 44
1 45
1 46
1 47
1 48
1 49
1 50
1 51
1 52
1 53
1 54
1 55
1 56
1 57
1 58
1 59
1 60
1 61
1 62
1 63
1 64
1 65
1 66
1 67
1 68
1 69
1 70
1 71
1 72
1 73
1 74
1 75
1 76
1 77
1 78
1 79
1 80
1 81
1 82
1 83
1 84
1 85
1 86
1 87
1 88
1 89
1 90
1 91
1 92
1 93
1 94
1 95
1 96
1 97
1 98
1 99
1 100
1 101
1 102
1 103
1 104
1 105
1 106
1 107
1 108
1 109
1 110
1 111
1 112
2 3
2 4
2 5
2 6
2 7
2 8
2 9
2 10
2 11
2 12
2 13
2 14
2 15
2 16
2 17
2 18
2 19
2 20
2 21
2 22
2 23
2 24
2 25
2 26
2 27
2 28
2 29
2 30
2 31
2 32
2 33
2 34
2 35
2 36
2 37
2 38
2 39
2 40
2 41
2 42
2 43
2 44
2 45
2 46
2 47
2 48
2 49
2 50
2 51
2 52
2 53
2 54
2 55
2 56
2 57
2 58
2 59
2 60
2 61
2 62
2 63
2 64
2 65
2 66
2 67
2 68
2 69
2 70
2 71
2 72
2 73
2 74
2 75
2 76
2 77
2 78
2 79
2 80
2 81
2 82
2 83
2 84
2 85
2 86
2 87
2 88
2 89
2 90
2 91
2 92
2 93
2 94
2 95
2 96
2 97
2 98
2 99
2 100
2 101
2 102
2 103
2 104
2 105
2 106
2 107
2 108
2 109
2 110
2 111
2 112
3 4
3 5
3 6
3 7
3 8
3 9
3 10
3 11
3 12
3 13
3 14
3 15
3 16
3 17
3 18
3 19
3 20
3 21
3 22
3 23
3 24
3 25
3 26
3 27
3 28
3 29
3 30
3 31
3 32
3 33
3 34
3 35
3 36
3 37
3 38
3 39
3 40
3 41
3 42
3 43
3 44
3 45
3 46
3 47
3 48
3 49
3 50
3 51
3 52
3 53
3 54
3 55
3 56
3 57
3 58
3 59
3 60
3 61
3 62
3 63
3 64
3 65
3 66
3 67
3 68
3 69
3 70
3 71
3 72
3 73
3 74
3 75
3 76
3 77
3 78
3 79
3 80
3 81
3 82
3 83
3 84
3 85
3 86
3 87
3 88
3 89
3 90
3 91
3 92
3 93
3 94
3 95
3 96
3 97
3 98
3 99
3 100
3 101
3 102
3 103
3 104
3 105
3 106
3 107
3 108
3 109
3 110
3 111
3 112
4 5
4 6
4 7
4 8
4 9
4 10
4 11
4 12
4 13
4 14
4 15
4 16
4 17
4 18
4 19
4 20
4 21
4 22
4 23
4 24
4 25
4 26
4 27
4 28
4 29
4 30
4 31
4 32
4 33
4 34
4 35
4 36
4 37
4 38
4 39
4 40
4 41
4 42
4 43
4 44
4 45
4 46
4 47
4 48
4 49
4 50
4 51
4 52
4 53
4 54
4 55
4 56
4 57
4 58
4 59
4 60
4 61
4 62
4 63
4 64
4 65
4 66
4 67
4 68
4 69
4 70
4 71
4 72
4 73
4 74
4 75
4 76
4 77
4 78
4 79
4 80
4 81
4 82
4 83
4 84
4 85
4 86
4 87
4 88
4 89
4 90
4 91
4 92
4 93
4 94
4 95
4 96
4 97
4 98
4 99
4 100
4 101
4 102
4 103
4 104
4 105
4 106
4 107
4 108
4 109
4 110
4 111
4 112
5 6
5 7
5 8
5 9
5 10
5 11
5 12
5 13
5 14
5 15
5 16
5 17
5 18
5 19
5 20
5 21
5 22
5 23
5 24
5 25
5 26
5 27
5 28
5 29
5 30
5 31
5 32
5 33
5 34
5 35
5 36
5 37
5 38
5 39
5 40
5 41
5 42
5 43
5 44
5 45
5 46
5 47
5 48
5 49
5 50
5 51
5 52
5 53
5 54
5 55
5 56
5 57
5 58
5 59
5 60
5 61
5 62
5 63
5 64
5 65
5 66
5 67
5 68
5 69
5 70
5 71
5 72
5 73
5 74
5 75
5 76
5 77
5 78
5 79
5 80
5 81
5 82
5 83
5 84
5 85
5 86
5 87
5 88
5 89
5 90
5 91
5 92
5 93
5 94
5 95
5 96
5 97
5 98
5 99
5 100
5 101
5 102
5 103
5 104
5 105
5 106
5 107
5 108
5 109
5 110
5 111
5 112
6 7
6 8
6 9
6 10
6 11
6 12
6 13
6 14
6 15
6 16
6 17
6 18
6 19
6 20
6 21
6 22
6 23
6 24
6 25
6 26
6 27
6 28
6 29
6 30
6 31
6 32
6 33
6 34
6 35
6 36
6 37
6 38
6 39
6 40
6 41
6 42
6 43
6 44
6 45
6 46
6 47
6 48
6 49
6 50
6 51
6 52
6 53
6 54
6 55
6 56
6 57
6 58
6 59
6 60
6 61
6 62
6 63
6 64
6 65
6 66
6 67
6 68
6 69
6 70
6 71
6 72
6 73
6 74
6 75
6 76
6 77
6 78
6 79
6 80
6 81
6 82
6 83
6 84
6 85
6 86
6 87
6 88
6 89
6 90
6 91
6 92
6 93
6 94
6 95
6 96
6 97
6 98
6 99
6 100
6 101
6 102
6 103
6 104
6 105
6 106
6 107
6 108
6 109
6 110
6 111
6 112
7 8
7 9
7 10
7 11
7 12
7 13
7 14
7 15
7 16
7 17
7 18
7 19
7 20
7 21
7 22
7 23
7 24
7 25
7 26
7 27
7 28
7 29
7 30
7 31
7 32
7 33
7 34
7 35
7 36
7 37
7 38
7 39
7 40
7 41
7 42
7 43
7 44
7 45
7 46
7 47
7 48
7 49
7 50
7 51
7 52
7 53
7 54
7 55
7 56
7 57
7 58
7 59
7 60
7 61
7 62
7 63
7 64
7 65
7 66
7 67
7 68
7 69
7 70
7 71
7 72
7 73
7 74
7 75
7 76
7 77
7 78
7 79
7 80
7 81
7 82
7 83
7 84
7 85
7 86
7 87
7 88
7 89
7 90
7 91
7 92
7 93
7 94
7 95
7 96
7 97
7 98
7 99
7 100
7 101
7 102
7 103
7 104
7 105
7 106
7 107
7 108
7 109
7 110
7 111
7 112
8 9
8 10
8 11
8 12
8 13
8 14
8 15
8 16
8 17
8 18
8 19
8 20
8...
|
| 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
output =
1 2
filetext =
'function output = your_fcn_name(n)
function Y = lalala(X)
N = numel(X) ;
if N==1
if isnumeric(X) && X > 1 && X == fix(X)
Y = X*(X-1)/2 ;
else
error('For scalar input, N should be an integer > 1.') ;
end
elseif N == 2
% only two elements
Y = reshape(X, 1, 2) ; % output is a row vector
else % N > 2
% Example for N = 4 ->
V = N-1:-1:2 ; % V : 3 2
R = cumsum([1 V], 2) ; % R : 1 4 6
% Step 1 - create I, filling the two columns (c1 and c2)
I(R,2) = [0 -V] + 1 ; % -> c1: 0 0 0 0 0 0
% c2: 1 0 0 -2 0 -1
% Step 2
I(R,1) = 1 ; % -> c1: 1 0 0 1 0 1
% c2: 1 0 0 -2 0 -1
% Step 3
I(:,2) = I(:,2) + 1 ; % -> c1: 1 0 0 1 0 1
% c2: 2 1 1 -1 1 0
% Step 4
I = cumsum(I, 1) ; % -> c1: 1 1 1 2 2 3
% c2: 2 3 4 3 4 4
% Now we use I to index directly into X to create the output
Y = X(I) ;
end
end
output = lalala(1:n)
end
%This code written by profile_id 7310613
'
|
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