Do rounding nearest integer.
Example: -8.8, answer -9
+8.1 answer 8
+8.50 answer 9
Matrix indexing with two vectors of indices
Make a run-length companion vector
Duplicate each element of a vector.
Times 3 problem
Count number of words in string
Find out value of polynomial at different value.
Convert decimal to hex as shown in test cases
Add two hex numbers
Find out next state (NS) of T Flip-Flop.
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