Please write the answer in Pseudocode

Task 6: Complete the following function: function CHECKGRIDS(puzzle) end function This function will take the vector puzzle (as produced by MAKEVECTOR) as an input parameter and check that all sub-grids contain all numbers from 1 to 4: if every sub-grid does contain all numbers from 1 to 4, it should return TRUE, otherwise it should return FALSE. For each sub-grid you should create a stack with numbers from 1 to 4, and then repeatedly search the stack to see if the values in the sub-grid are stored there. To get full marks you need to call SEARCHSTACK(stack, item). [6 marks]