10+ Groww Software Developer Intern Interview Questions and Answers

Determine the minimum and maximum amounts of money needed to purchase all candies with a special offer.

• Iterate through the candy costs array to find the minimum and maximum costs.

• Consider the special offer of getting up to 'K' additional candies for free.

• Calculate the minimum cost by selecting the cheapest candies and taking free ones.

• Calculate the maximum cost by selecting the most expensive candies and taking free ones.

Given a dictionary of words and a continuous string, generate all possible sentences by inserting spaces.

• Use recursion to generate all possible combinations of words from the dictionary to form sentences.

• Check if a substring of the sentence matches any word in the dictionary, if so, recursively call the function with the remaining substring.

• Keep track of the current sentence being formed and add it to the result when the entire sentence is processed.

• Handle edge cases like emp...read more

Determine the maximum profit achievable with at most K transactions by buying and selling stocks.

• Iterate through the array and keep track of the minimum price to buy and maximum profit for each transaction.

• Use dynamic programming to store the maximum profit at each day with each possible number of transactions.

• Consider edge cases such as when K is 0 or when the array is empty.

• Example: For input N = 6, PRICES = [3, 2, 6, 5, 0, 3], K = 2, the output should be 7.

Calculate minimum steps for a Knight to reach target position on a chessboard.

• Use BFS algorithm to find the shortest path from Knight's starting position to target position.

• Consider all possible moves of the Knight on the chessboard.

• Keep track of visited positions to avoid revisiting them.

• Return the minimum number of moves required to reach the target position.

Replace elements in an array with their corresponding ranks based on given rules.

• Iterate through the array and assign ranks based on the rules provided.

• Handle equal elements by assigning them the same rank.

• Return the modified array with elements replaced by their ranks.

Remove the middle node from a singly linked list of integers.

• Identify the middle node using slow and fast pointers technique.

• Update the pointers to remove the middle node.

• Handle cases where there are two middle nodes by removing the first one.

• Return NULL if no middle node exists.

• Achieve O(N) time and O(1) space complexity with a single traversal.

Detect if a singly linked list forms a cycle by checking if a node's next points back to a previous node.

• Use Floyd's Tortoise and Hare algorithm to detect a cycle in the linked list.

• Initialize two pointers, slow and fast, and move them at different speeds through the list.

• If there is a cycle, the two pointers will eventually meet at some node.

• If one of the pointers reaches the end of the list (null), there is no cycle.

Implement a stack with getMin operation in O(1) time complexity without using extra space.

• Use two stacks - one to store the actual elements and another to store the minimum values encountered so far.

• When pushing an element, check if it is smaller than the current minimum and if so, push it onto the minimum stack.

• When popping an element, check if it is the current minimum and if so, pop from the minimum stack as well.

• For getMin operation, simply return the top element of the m...read more

The task is to output the right view of a binary tree, which includes the nodes visible when observed from the right.

• Perform a level order traversal of the binary tree.

• For each level, add the rightmost node to the result list.

• Print the result list as the right view of the binary tree.

• Handle null nodes by skipping them during traversal.