Difference between revisions of "CSC111 Homework 6 Solution 2014"

From dftwiki3
Jump to: navigation, search
(→‎Program 1)
 
(8 intermediate revisions by the same user not shown)
Line 1: Line 1:
 
--[[User:Thiebaut|D. Thiebaut]] ([[User talk:Thiebaut|talk]]) 09:46, 26 March 2014 (EDT)
 
--[[User:Thiebaut|D. Thiebaut]] ([[User talk:Thiebaut|talk]]) 09:46, 26 March 2014 (EDT)
 
----
 
----
−
There were several good solution programs for [[CSC111 Homework 6 Solution 2014| Homework 6]].  You were not required to use a '''main()''' function, although some did.  The program below is a good example of how Python programs should be organized, with a header first, possibly a few import statements, maybe a constant or two, then a long list of function definitons ('''def''' statements), then the definition of the '''main()''' function, and at the very end, one call to '''main()''' that starts the whole program.
+
<onlydft>
 +
 
 +
There were several good solution programs for [[CSC111 Homework 6 Solution 2014| Homework 6]].  You were not required to use a '''main()''' function, although some did.  The programs below were selected because they presented good features (not necessarily the same).  
  
 
<br />
 
<br />
 
=Program 1=
 
=Program 1=
 +
<br />
 +
The program below is a good example of how Python programs should be organized, with a header first, possibly a few import statements, maybe a constant or two, then a long list of function definitons ('''def''' statements), then the definition of the '''main()''' function, and at the very end, one call to '''main()''' that starts the whole program.
 
<br />
 
<br />
 
<source lang="python">
 
<source lang="python">
Line 60: Line 64:
  
 
# ==================================================================   
 
# ==================================================================   
−
#                                                           MAIN PROGRAM
+
#                           MAIN PROGRAM
 
# ==================================================================
 
# ==================================================================
 
# main()- set the visibility to be true and print the
 
# main()- set the visibility to be true and print the
Line 82: Line 86:
 
=Program 2=
 
=Program 2=
 
<br />
 
<br />
 +
This program gets points for good documentation and style.
 +
<source lang="python">
 +
# hw6a.py
 +
# Thuy Nguyen (ce)
 +
#
 +
# This program asks the user for an integer that will represent
 +
# a chessboard with that dimension. The chessboard uses a 3x3
 +
# block to represent each cell of the board.
 +
# For example, if user enters 3, this chessboard will be displayed:
 +
#                          ###...###
 +
#                          ###...###
 +
#                          ###...###
 +
#                          ...###...
 +
#                          ...###...
 +
#                          ...###...
 +
#                          ###...###
 +
#                          ###...###
 +
#                          ###...###
 +
# -----------------------------------------------------------------
 +
 +
 +
# Makes either black (###) or white (...) segment
 +
# for each cell
 +
def printBlock( visible ):
 +
   
 +
    if visible==True:
 +
        print( "###", end="" )
 +
    else:
 +
        print( "...", end="" )
 +
 +
 +
# Makes indicated number of 3x3 cell(s) and alternates
 +
# black (###) and white (...) cells for each row
 +
def printLine( visibility, isOdd, dimension ):
 +
 +
    for i in range( 3 ):
 +
        for i in range( dimension//2 ):
 +
            printBlock( visibility )
 +
            printBlock( not visibility )
 +
       
 +
        if isOdd:
 +
            printBlock( visibility )
 +
 +
        print()
 +
 +
 +
# Alternates black (###) and white (...) cells the number of
 +
# times that the user indicated for each column
 +
def repeatLine( dimension, isOdd ):
 +
 +
    for i in range( dimension//2 ):
 +
        printLine( True, isOdd, dimension )
 +
        printLine( False, isOdd, dimension )
 +
 +
    if isOdd:
 +
        printLine( True, isOdd, dimension )
 +
 +
 +
def main():
 +
    # Asks user for dimension of chessboard
 +
    dimension = int( Input( "Enter dimension of board: " ) )
 +
 +
    # Asks user again for another input
 +
    # if user enters negative number
 +
    while dimension < 0:
 +
        dimension = int( Input( "Invalid input. Please enter 0 or positive number: " ) )
 +
 +
    # Boolean variable when dimension is
 +
    # odd for the for loops in functions
 +
    isOdd = dimension % 2 == 1
 +
 +
    # prints chessboard
 +
    repeatLine( dimension, isOdd )
 +
 +
 +
main()
 +
</source>
 +
<br />
 +
 +
=Program 3=
 +
<br />
 +
This program was the shortest in the class.  Very tight, concise, and works well.  I prefer when the program contains more functions, but this one gets special reward for concise coding.
 +
<br />
 +
<source lang="python">
 +
# Claire Dudek (ah)
 +
# (slightly edited by D. Thiebaut)
 +
# 3/9/2014
 +
# Homework 6
 +
# hw6a.py
 +
# This program takes an input for the size of the grid
 +
# and then outputs that grid using a 3x3 of # or . for
 +
# each square in the grid
 +
 +
# Prints one row of the board.  visible defines whether
 +
# the row starts with white or black cell.  Dim is the
 +
# dimension of the board, controlling the # of cells on
 +
# a row.
 +
def printRow(visible, dim):
 +
    for i in range (dim):
 +
        if visible==True:
 +
            print("###", end="")
 +
        if visible == False:
 +
            print("...", end="")
 +
        visible = not visible
 +
    print()
 +
 +
# Prompts the user for a dimension, and then print the whole chessboard
 +
# on the screen.
 +
def main(visibility):
 +
 +
    # Input from user - cannot be less than 0
 +
    dim = -1
 +
    while dim <= -1:
 +
        dim = int( input("Enter dimension of board: "))
 +
 +
    for i in range (dim):
 +
      printRow(visibility, dim)
 +
      printRow(visibility, dim)
 +
      printRow(visibility, dim)
 +
      visibility = not visibility
 +
 +
 +
# Makes the grid
 +
main(True)
 +
 +
</source>
 +
<br />
 +
</onlydft>
 +
 +
<br />
 +
<br />
 +
<br />
 +
<br />
 +
<br />
 +
<br />
 +
<br />
 +
<br />
 +
<br />
 +
[[Category:CSC111]][[Category:Python]][[Category:Homework]]

Latest revision as of 21:40, 9 January 2015

--D. Thiebaut (talk) 09:46, 26 March 2014 (EDT)


...











Retrieved from "http://dominiquethiebaut.com/dftwiki3/index.php?title=CSC111_Homework_6_Solution_2014&oldid=24846"