Implement a basic calculator to evaluate a simple expression string. The expression can contain non-negative integers, '+', '-', '*', '/' operators, and spaces; integer division should truncate toward zero.

StringsStacks

Somewhat likely

If you have a Rokt interview, you might get this question

Medium

#2. Basic Calculator II

Medium

StringsStacks

This question is somewhat likely to be asked in your Rokt interview

Valid Word Abbreviation

Determine if a given abbreviation is valid for a given word. An abbreviation can contain digits representing the number of skipped characters.

StringsTwo Pointers

Not likely

If you have a Rokt interview, it's unlikely that you will get this question. Rokt does ask it, but it's rare

Easy

#3. Valid Word Abbreviation

Easy

Determine if a given abbreviation is valid for a given word. An abbreviation can contain digits representing the number of skipped characters.

StringsTwo Pointers

This question is not likely to be asked in your Rokt interview