Amitava, it is fantastic that you are contributing problems, but you really need to spend more time specifying what the solution should do. The person solving is left needing to guess too much.
Definitely Agree with the cyclist. W/o example it is impossible to understand the task to achieve.
The DC component of a signal is usually its mean. Now filter can have many meanings, but in this case, it means to remove the signal variation.
Count from 0 to N^M in base N.
Remove the air bubbles
Create a cell array out of a struct
Concatenate two strings
Evaluating a polynomial
Check if sorted
Use of regexp
wait for me
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