AmbitionBox Senior Front End Engineer Interview Questions and Answers

Find the longest substring without any repeating characters

• Use a sliding window approach to track the longest substring without repeating characters

• Keep track of the characters seen so far in a set to quickly check for repeats

• Update the start index of the window when a repeat is found

Create a component to display concentric circles

• Use HTML canvas element to draw circles

• Calculate the radius and position of each circle

• Use CSS for styling and positioning if needed