Deutsche Bank Software Developer Interview Questions and Answers

Find the minimal jump length to bypass all obstacles while avoiding landing on any obstacle.

• Iterate through the obstacle coordinates to find the maximum coordinate.

• Calculate the minimum jump length needed to bypass all obstacles.

• Ensure the jump length consistently avoids all obstacle points.

• The final jump can overshoot the line's end point.

Determine minimum operations to make all array elements equal using addition, subtraction, multiplication, or division.

• Iterate through array to find the minimum and maximum values

• Calculate the difference between the maximum and minimum values

• Return the difference as the minimum number of operations needed

Find the length of the longest consecutive sequence in an unsorted array of integers.

• Sort the array to make it easier to identify consecutive sequences.

• Use a set to store unique elements and check for consecutive numbers.

• Track the length of consecutive sequences and update the maximum length found.

• Handle duplicates by counting only one occurrence in the consecutive sequence.

Reverse a given string containing characters from [a-z], [A-Z], [0-9], and special characters.

• Iterate through the characters of the string in reverse order and append them to a new string.

• Use built-in functions like reverse() or StringBuilder in languages like Python or Java for efficient reversal.

• Handle special characters and numbers along with alphabets while reversing the string.

• Ensure to print each reversed string on a separate line as per the output format.

Implement a coding challenge in Java 8

• Use lambda expressions and functional interfaces to write concise and readable code

• Utilize streams to process collections efficiently

• Leverage method references for cleaner code