Question

Rubrik | SDE | Coding OA Questions and Solutions | Set - 1

Answer 1

Given two arrays of size N each containing the elements 1 to N, find the minimum number of operations needed to transform the second array into the first.

 

An operation is defined as:
Taking any current value in an array and moving it to the beginning or end.

 

Example:
Turn Array2 into Array1

 

Array1 = [4,2,3,1,5,6]
Array2 = [3,1,4,6,5,2]

 

Returns 3:

 

Operation 1: Move 2 to beginning.
Array2 = [2,3,1,4,6,5]

 

Operation 2: Move 4 to beginning.
Array2 = [4,2,3,1,6,5]

 

Operation 3: Move 6 to end:
Array2 = [4,2,3,1,5,6]