Altimetrik Software Engineer Interview Questions and Answers

Backtracking is a technique to solve problems by trying out different solutions and undoing them if they fail.

• Backtracking is used when we need to find all possible solutions to a problem.

• It involves trying out different solutions and undoing them if they fail.

• It is often used in problems involving permutations, combinations, and graph traversal.

• Examples include solving Sudoku puzzles, finding all possible paths in a m...read more

Minimum swaps needed to arrange all similar elements together in an array of strings.

• Count the frequency of each element in the array.

• Find the maximum frequency element and its index.

• Calculate the number of swaps needed to move all similar elements together.

• Repeat the above steps for all unique elements in the array.

• Add up the number of swaps needed for each unique element to get the total number of swaps needed.