Cody

# Problem 38. Return a list sorted by number of occurrences

Solution 1903768

Submitted on 18 Aug 2019 by Tetsuji Tsuda
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### Test Suite

Test Status Code Input and Output
1   Pass
x = [1 2 2 2 3 3 7 7 93] y_correct = [2 3 7 1 93]; assert(isequal(popularity(x),y_correct))

x = 1 2 2 2 3 3 7 7 93 uni_x = 1 2 3 7 93 cat_x = 1×9 categorical array 1 2 2 2 3 3 7 7 93 cnt_x = 1 3 2 2 1 uni_x = 1 2 3 7 93 cnt_x = 1 3 2 2 1 T = 5×2 table <strong>uni_x</strong> <strong>cnt_x</strong> <strong>_____</strong> <strong>_____</strong> 1 1 2 3 3 2 7 2 93 1 T = 5×2 table <strong>uni_x</strong> <strong>cnt_x</strong> <strong>_____</strong> <strong>_____</strong> 2 3 3 2 7 2 1 1 93 1 y = 2 3 7 1 93 y = 2 3 7 1 93

2   Pass
x = [-1 19 20 -1 -1 87 19 34 19 -1 21 87 20 10 20 34 19 -1]; y_correct = [-1 19 20 34 87 10 21]; assert(isequal(popularity(x),y_correct))

uni_x = -1 10 19 20 21 34 87 cat_x = 1×18 categorical array -1 19 20 -1 -1 87 19 34 19 -1 21 87 20 10 20 34 19 -1 cnt_x = 5 1 4 3 1 2 2 uni_x = -1 10 19 20 21 34 87 cnt_x = 5 1 4 3 1 2 2 T = 7×2 table <strong>uni_x</strong> <strong>cnt_x</strong> <strong>_____</strong> <strong>_____</strong> -1 5 10 1 19 4 20 3 21 1 34 2 87 2 T = 7×2 table <strong>uni_x</strong> <strong>cnt_x</strong> <strong>_____</strong> <strong>_____</strong> -1 5 19 4 20 3 34 2 87 2 10 1 21 1 y = -1 19 20 34 87 10 21 y = -1 19 20 34 87 10 21