Find the sum of the numeric equivalents of all characters entered in a phrase. For example: for the phrase 'My name is test', the result should be a sum of the array:
[77 121 32 110 97 109 101 32 105 115 32 116 101 115 116] i.e. 1379
Determine Whether an array is empty
Basic commands - rounding
basic matrix operations: rotate and find sum of diagonal elements of the resultant matrix
surface areas of a cylinder
Capitalized string operations
Perimeter of a semicircle
count upper and lower case characters
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