Answer / Mohammad Ubaid

Regular expression (regex) syntax is a pattern-matching language used to search, replace, or manipulate text. In R, regular expressions can be used with functions like grep() and regexpr().

Compare r and python?

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What is r’s c interface?

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What are the different components of grammar of graphics?

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Name some packages in r, which can be used for data imputation?

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What is the difference between a bar-chart and a histogram? Where would you use a bar-chart and where would you use a histogram?

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How many data structures R has?

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What is GUI in R?

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What is using all() and any()?

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What is a motivation behind data visualization in R?

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What is recursive function in r?

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How you can create a table in r without external file?

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Explain in brief preliminaries of C/C++?

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