MindTickle Software Developer Interview Questions and Answers

This question asks to find the position of a target integer in a row-wise and column-wise sorted matrix.

• Iterate through each row and column of the matrix

• Compare the target integer with the current element

• If the target integer is found, return the position as {i, j}

• If the target integer is not found, return {-1, -1}

The question asks to find the total amount of rainwater that can be trapped in the given elevation map.

• Iterate through the array and find the maximum height on the left and right of each bar.

• Calculate the amount of water that can be trapped at each bar by taking the minimum of the maximum heights on the left and right.

• Sum up the trapped water for all bars and return the total amount.

Find the maximum total booked minutes possible in a conference room for all meetings with a 15-minute break between meetings.

• Iterate through the list of meeting durations and calculate the maximum total booked minutes considering the 15-minute break constraint.

• Keep track of the total booked minutes and skip consecutive meetings that violate the break constraint.

• Return the maximum total booked minutes for each test case.

Find the smallest subarray with exactly K distinct elements in an array.

• Use a sliding window approach to keep track of the subarray with K distinct elements.

• Maintain a hashmap to count the frequency of each element in the window.

• Update the window size based on the number of distinct elements.

• Return the smallest subarray with K distinct elements.

Calculate the total volume of water that can be trapped in a 2-D elevation map after rainfall.

• Iterate through each cell in the matrix and calculate the trapped water based on the surrounding heights.

• Use a stack or queue to keep track of the cells to be processed.

• Consider edge cases such as when the matrix is empty or has only one row or column.