pooperz

gistfile1.txt

require 'minitest/spec'
require 'minitest/autorun'

# Integer list generation

listOfInt = [1, 3, 5, 7, 9, 11]

left, right = 0, 1
top, bottom = 2, 3

def rotateFromRight(alist)
  #Rotates alist so that the rightmost element appears at the left end of 
  #the list and the other elements are pushed toward the right end of the list
  temp = alist.last

  for i in ((alist.size - 2).downto(0))
    alist[i + 1] = alist[i]
end

  alist[0] = temp

  return alist
end


def rotateFromLeft(alist)
  #Rotates alist so that the leftmost element appears at the right end of 
  #the list and the other elements are pushed toward the left end of the list
  temp = alist[0]

  (1..alist.size).each do |i|
    alist[i - 1] = alist[i]
  end

  alist[alist.size - 1] = temp

  return alist
end

    
def rotateRow(alist, side)  
  #Rotates alist from side where side == left or side == right

if side == "right"
  rotateFromRight(alist)
elsif side == "left"
  rotateFromLeft(alist)
end
end

        
def rotateAnyRow(alist, row, side)  
  #Rotates a given row of atable from side where side == left or side == right.
  #row is given as an integer value. atable is a list of list of elements
alist[row] = rotateRow(alist[row], side)
return alist
end
        
  
        
def rotateFromTop(alist, col = 0)
  #Rotates a given column (col) of atable so that the topmost element 
  #appears at the bottom of the column and the other elements are pushed toward
  #the top of the column.  col is given as an integer value. atable is a list 
  #of list of elements.
  temp = alist[0][col]

  (1..alist.size - 1).each do |i|
  alist[i-1][col] = alist[i][col]
  end

alist[alist.size - 1][col] = temp 
return alist
end

    
def rotateFromBottom(alist, col = 0)
  #Rotates a given column (col) of atable so that the bottommost element 
  #appears at the top of the column and the other elements are pushed toward 
  #the bottom of the column. col is given as an integer value. atable is a list 
  #of list of elements.
    temp = alist.last[col]

  (alist.size - 2).downto(0).each do |i|
    alist[i + 1][col] = alist[i][col]
end

  alist[0][col] = temp

  return alist
end
        
def rotateAnyColumn(alist, col, side)  
  #Rotates a given column (col) of atable from side where side == top or 
  #side == bottom.  col is given as an integer value. atable is a list 
  #of list of elements.
  if side == "top"
  rotateFromTop(alist, col)
  elsif side == "bottom"
  rotateFromBottom(alist, col)
end
end

        
def genListOfList()
  #Generates a list of list of integers
  [ [1, 3, 5, 7, 9, 11],
    [5, 15, 25, 35, 45, 55],
    [1, 9, 25, 49, 81, 121],
    [-1, -3, -5, -7, -9, -11],
    [2, 6, 10, 14, 18, 22],
    [0, 1, 2, 3, 4, 5] ]
end
            
describe "Rotation Functions" do
  before do
    @list = [1, 3, 5, 7, 9, 11]
    @list_of_lists = genListOfList
  end

  it 'is able to rotate a list left' do
    rotateFromLeft(@list).must_equal [3, 5, 7, 9, 11, 1]
  end

  it 'is able to rotate a list right' do
    rotateFromRight(@list).must_equal [11, 1, 3, 5, 7, 9]
  end

  it 'is able to rotate a row left' do
    rotateRow(@list, "left").must_equal [3, 5, 7, 9, 11, 1]
  end

  it 'is able to rotate a row right' do
    rotateRow(@list, "right").must_equal [11, 1, 3, 5, 7, 9]
  end

  it 'is able to rotate any row in a list of lists' do
    rotateAnyRow(@list_of_lists, 5, "right").must_equal [[1, 3, 5, 7, 9, 11], [5, 15, 25, 35, 45, 55], [1, 9, 25, 49, 81, 121], [-1, -3, -5, -7, -9, -11], [2, 6, 10, 14, 18, 22], [5, 0, 1, 2, 3, 4]]
  end

  it 'is able to rotate a column from the top to the bottom' do
    rotateFromTop(@list_of_lists).must_equal [[5, 3, 5, 7, 9, 11], [1, 15, 25, 35, 45, 55], [-1, 9, 25, 49, 81, 121], [2, -3, -5, -7, -9, -11], [0, 6, 10, 14, 18, 22], [1, 1, 2, 3, 4, 5]]
  end 

  it 'is able to rotate a column from the bottom to the top' do
    rotateFromBottom(@list_of_lists).must_equal [[0, 3, 5, 7, 9, 11], [1, 15, 25, 35, 45, 55], [5, 9, 25, 49, 81, 121], [1, -3, -5, -7, -9, -11], [-1, 6, 10, 14, 18, 22], [2, 1, 2, 3, 4, 5]] 
  end 

  it 'is able to rotate any column' do
    rotateAnyColumn(@list_of_lists, 0, "top").must_equal [[1, 3, 5, 7, 9, 11], [5, 15, 25, 35, 45, 55], [1, 9, 25, 49, 81, 121], [-1, -3, -5, -7, -9, -11], [2, 6, 10, 14, 18, 22], [0, 1, 2, 3, 4, 5]]
  end
end