Steag Energy Services Interview Questions and Answers

The task is to find the length of the longest consecutive sequence in an unsorted array of integers.

• Sort the array to bring consecutive numbers together

• Iterate through the sorted array and keep track of the current consecutive sequence length

• Update the maximum length if a longer sequence is found

The program calculates the Nth Fibonacci number using a recursive formula.

• The Fibonacci series starts with 1, 1, and each subsequent number is the sum of the two preceding numbers.

• The program uses a recursive function to calculate the Nth Fibonacci number.

• The time complexity of the program is O(2^N), which can be optimized using memoization or dynamic programming.

The task is to reverse a given string containing lowercase letters, uppercase letters, digits, and special characters.

• Iterate through the string from the last character to the first character and append each character to a new string.

• Alternatively, you can use built-in string reversal functions or methods available in your programming language.

• To solve the follow-up question with O(1) space complexity, you can use a two-pointer approach. Initialize two pointers, one at the be...read more