Cody

# Problem 44457. Triangle of numbers

Solution 1386326

Submitted on 19 Dec 2017 by shimon zusmanovsky
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### Test Suite

Test Status Code Input and Output
1   Pass
filetext = fileread('triangle.m'); assert(isempty(strfind(filetext, 'regexp')),'regexp hacks are forbidden')

2   Pass
n = 0; mat_correct = []; assert(isequal(triangle(n),mat_correct))

a = 1 b = 1 mat = []

3   Pass
n = 1; mat_correct = 1; assert(isequal(triangle(n),mat_correct))

a = 1 b = 1 mat = [] mat = 1 a = 2 b = 1

4   Pass
n = 6; mat_correct = [1 0 0; 2 3 0; 4 5 6]; assert(isequal(triangle(n),mat_correct))

a = 1 b = 1 mat = [] mat = 1 a = 2 b = 1 mat = 1 2 b = 2 mat = 1 0 2 3 a = 3 b = 1 mat = 1 0 2 3 4 0 b = 2 mat = 1 0 2 3 4 5 b = 3 mat = 1 0 0 2 3 0 4 5 6 a = 4 b = 1

5   Pass
n = 12; mat_correct = [1 0 0 0; 2 3 0 0; 4 5 6 0; 7 8 9 10; 11 12 0 0]; assert(isequal(triangle(n),mat_correct))

a = 1 b = 1 mat = [] mat = 1 a = 2 b = 1 mat = 1 2 b = 2 mat = 1 0 2 3 a = 3 b = 1 mat = 1 0 2 3 4 0 b = 2 mat = 1 0 2 3 4 5 b = 3 mat = 1 0 0 2 3 0 4 5 6 a = 4 b = 1 mat = 1 0 0 2 3 0 4 5 6 7 0 0 b = 2 mat = 1 0 0 2 3 0 4 5 6 7 8 0 b = 3 mat = 1 0 0 2 3 0 4 5 6 7 8 9 b = 4 mat = 1 0 0 0 2 3 0 0 4 5 6 0 7 8 9 10 a = 5 b = 1 mat = 1 0 0 0 2 3 0 0 4 5 6 0 7 8 9 10 11 0 0 0 b = 2 mat = 1 0 0 0 2 3 0 0 4 5 6 0 7 8 9 10 11 12 0 0 b = 3

6   Pass
n = 50; mat_correct = [1,zeros(1,8); 2:3,zeros(1,7); 4:6,zeros(1,6); 7:10,zeros(1,5); 11:15,zeros(1,4); 16:21,zeros(1,3); 22:28,0,0; ; 29:36,0; 37:45; 46:50,zeros(1,4)]; assert(isequal(triangle(n),mat_correct))

a = 1 b = 1 mat = [] mat = 1 a = 2 b = 1 mat = 1 2 b = 2 mat = 1 0 2 3 a = 3 b = 1 mat = 1 0 2 3 4 0 b = 2 mat = 1 0 2 3 4 5 b = 3 mat = 1 0 0 2 3 0 4 5 6 a = 4 b = 1 mat = 1 0 0 2 3 0 4 5 6 7 0 0 b = 2 mat = 1 0 0 2 3 0 4 5 6 7 8 0 b = 3 mat = 1 0 0 2 3 0 4 5 6 7 8 9 b = 4 mat = 1 0 0 0 2 3 0 0 4 5 6 0 7 8 9 10 a = 5 b = 1 mat = 1 0 0 0 2 3 0 0 4 5 6 0 7 8 9 10 11 0 0 0 b = 2 mat = 1 0 0 0 2 3 0 0 4 5 6 0 7 8 9 10 11 12 0 0 b = 3 mat = 1 0 0 0 2 3 0 0 4 5 6 0 7 8 9 10 11 12 13 0 b = 4 mat = 1 0 0 0 2 3 0 0 4 5 6 0 7 8 9 10 11 12 13 14 b = 5 mat = 1 0 0 0 0 2 3 0 0 0 4 5 6 0 0 7 8 9 10 0 11 12 13 14 15 a = 6 b = 1 mat = 1 0 0 0 0 2 3 0 0 0 4 5 6 0 0 7 8 9 10 0 11 12 13 14 15 16 0 0 0 0 b = 2 mat = 1 0 0 0 0 2 3 0 0 0 4 5 6 0 0 7 8 9 10 0 11 12 13 14 15 16 17 0 0 0 b = 3 mat = 1 0 0 0 0 2 3 0 0 0 4 5 6 0 0 7 8 9 10 0 11 12 13 14 15 16 17 18 0 0 b = 4 mat = 1 0 0 0 0 2 3 0 0 0 4 5 6 0 0 7 8 9 10 0 11 12 13 14 15 16 17 18 19 0 b = 5 mat = 1 0 0 0 0 2 3 0 0 0 4 5 6 0 0 7 8 9 10 0 11 12 13 14 15 16 17 18 19 20 b = 6 mat = 1 0 0 0 0 0 2 3 0 0 0 0 4 5 6 0 0 0 7 8 9 10 0 0 11 12 13 14 15 0 16 17 18 19 20 21 a = 7 b = 1 mat = 1 0 0 0 0 0 2 3 0 0 0 0 4 5 6 0 0 0 7 8 9 10 0 0 11 12 13 14 15 0 16 17 18 19 20 21 22 0 0 0 0 0 b = 2 mat = 1 0 0 0 0 0 2 3 0 0 0 0 4 5 6 0 0 0 7 8 9 10 0 0 11 12 13 14 15 0 16 17 18 19 20 21 22 23 0 0 0 0 b = 3 mat = 1 0 0 0 0 0 2 3 0 0 0 0 4 5 6 0 0 0 7 8 9 10 0 0 11 12 13 14 15 0 16 17 18 19 20 21 22 23 24 0 0 0 b = 4 mat = 1 0 0 0 0 0 2 3 0 0 0 0 4 5 6 0 0 0 7 8 9 10 0 0 11 12 13 14 15 0 16 17 18 19 20 21 22 23 24 25 0 0 b = 5 mat = 1 0 0 0 0 0 2 3 0 0 0 0 4 5 6 0 0 0 7 8 9 10 0 0 11 12 13 14 15 0 16 17 18 19 20 21 22 23 24 25 26 0 b = 6 mat = 1 0 0 0 0 0 2 3 0 0 0 0 4 5 6 0 0 0 7 8 9 10 0 0 11 12 13 14 15 0 16 17 18 19 20 21 22 23 24 25 26 27 b = 7 mat = 1 0 0 0 0 0 0 2 3 0 0 0 0 0 4 5 6 0 0 0 0 7 8 9 10 0 0 0 11 12 13 14 15 0 0 16 17 18 19 20 21 0 22 23 24 25 26 27 28 a = 8 b = 1 mat = 1 0 0 0 0 0 0 2 3 0 0 0 0 0 4 5 6 0 0 0 0 7 8 9 10 0 0 0 11 12 13 14 15 0 0 16 17 18 19 20 21 0 22 23 24 25 26 27 28 29 0 0 0 0 0 0 b = 2 mat = 1 0 0 0 0 0 0 2 3 0 0 0 0 0 4 5 6 0 0 0 0 7 8 9 10 0 0 0 11 12 13 14 15 0 0 16 17 18 19 20 21 0 22 23 24 25 26 27 28 29 30 0 0 0 0 0 b = 3 mat = 1 0 0 0 0 0 0 2 3 0 0 0 0 0 4 5 6 0 0 0 0 7 8 9 10 0 0 0 11 12 13 14 15 0 0 16 17 18 19 20 21 0 22 23 24 25 26 27 28 29 30 31 0 0 0 0 b = 4 mat = 1 0 0 0 0 0 0 2 3 0 0 0 0 0 4 5 6 0 0 0 0 7 8 9 10 0 0 0 11 12 13 14 15 0 0 16 17 18 19 20 21 0 22 23 24 25 26 27 28 29 30 31 32 0 0 0 b = 5 mat = 1 0 0 0 0 0 0 2 3 0 0 0 0 0 4 5 6 0 0 0 0 7 8 9 10 0 0 0 11 12 13 14 15 0 0 16 17 18 19 20 21 0 22 23 24 25 26 27 28 29 30 31 32 33 0 0 b = 6 mat = 1 0 0 0 0 0 0 2 3 0 0 0 0 0 4 5 6 0 0 0 0 7 8 9 10 0 0 0 11 12 13 14 15 0 0 16 17 18 19 20 21 0 22 23 24 25 26 27 28 29 30 31 32 33 34 0 b = 7 mat = 1 0 0 0 0 0 0 2 3 0 0 0 0 0 4 5 6 0 0 0 0 7 8 9 10 0 0 0 11 12 13 14 15 0 0 16 17 18 19 20 21 0 22 23 24 25 26 27 28 29 30 31 32 33 34 35 b = 8 mat = 1 0 0 0 0 0 0 0 2 3 0 0 0 0 0 0 4 5 6 0 0 0 0 0 7 8 9 10 0 0 0 0 11 12 13 14 15 0 0 0 16 17 18 19 20 21 0 0 22 23 24 25 26 27 28 0 29 30 31 32 33 34 35 36 a = 9 b = 1 mat = 1 0 0 0 0 0 0 0 2 3 0 0 0 0 0 0 4 5 6 0 0 0 0 0 7 8 9 10 0 0 0 0 11 12 13 14 15 0 0 0 16 17 18 19 20 21 0 0 22 23 24 25 26 27 28 0 29 30 31 32 33 34 35 36 37 0 0 0 0 0 0 0 b = 2 mat = 1 0 0 0 0 0 0 0 2 3 0 0 0 0 0 0 4 5 6 0 0 0 0 0 7 8 9 10 0 0 0 0 11 12 13 14 15 0 0 0 16 17 18 19 20 21 0 0 22 23 24 25 26 27 28 0 29 30 31 32 33 34 35 36 37 38 0 0 0 0 0 0 b = 3 mat = 1 0 0 0 0 0 0 0 2 3 0 0 0 0 0 0 4 5 6 0 0 0 0 0 7 8 9 10 0 0 0 0 11 12 13 14 15 0 0 0 16 17 18 19 20 21 0 0 22 23 24 25 26 27 28 0 29 30 31 32 33 34 35 36 37 38 39 0 0 0 0 0 b = 4 mat = 1 0 0 0 0 0 0 0 2 3 0 0 0 0 0 0 4 5 6 0 0 0 0 0 7 8 9 10 0 0 0 0 11 12 13 14 15 0 0 0 16 17 18 19 20 21 0 0 22 23 24 25 26 27 28 0 29 30 31 32 33 34 35 36 37 38 39 40 0 0 0 0 b = 5 mat = 1 0 0 0 0 0 0 0 2 3 0 0 0 0 0 0 4 5 6 0 0 0 0 0 7 8 9 10 0 ...