Lamp Developer Interview Questions and Answers

Use a reverse algorithm to convert the hash back to the original string.

• Identify the algorithm used to create the hash

• Create a reverse algorithm to undo the hash function

• Apply the reverse algorithm to the hash to get the original string

Calculate angle between hour and minute hand of a clock given time

• Calculate hour hand angle based on current hour and minute

• Calculate minute hand angle based on current minute

• Calculate absolute difference between two angles

• Return smaller angle between two angles

25 horses race in 5 lanes, find fastest 3 horses.

• Divide horses into 5 groups of 5 horses each.

• Conduct 5 races with each group of horses.

• Take the top 3 horses from each race and conduct a final race to determine the fastest 3 horses.

Regex for email validation

• Start with a string of characters followed by '@' symbol

• Followed by a string of characters, numbers, hyphens, or dots

• End with a string of characters, a dot, and a 2-6 letter TLD