gsinclair

# Initial data, for testing.
ItemNo      = [31, 42, 27, 81, 99, 46]
Description = ["Vase", "Chair", "Painting", "Piano", "Tuba", "Model car"]
NumBids     = [3, 0, 1, 9, 7, 0]
Reserve     = [19, 80, 300, 120, 99, 5]
Bid         = [25, 0, 50, 437, 105, 0]
Buyer       = [108, None, 199, 176, 155, None]
Result      = [None, None, None, None, None, None]

N = 6

gsinclair

def name(sack_type):
    if sack_type == 'S': return 'sand'
    elif sack_type == 'G': return 'gravel'
    elif sack_type == 'C': return 'cement'

def input_sack_details(n):
    global NREJECTS
    while True:
        prompt = "Sack " + str(n) + "> "
        user_input = input(prompt)

gsinclair

# Determine whether a list L is increasing. Return True or False.
def incr(L):
    if len(L) < 2:
        # An empty list or a single-value list is counted as increasing.
        return True
    answer = True
    i      = 1
    while True:
        if i >= len(L):
            # We got to the end without returning False, so the answer must be True.

gsinclair

   n sum   total

   1   1       1
   2   2       3
   3   3       6
   4   4      10
   5   5      15
   6   6      21
   7   7      28
   8   8      36

gsinclair

# Jennivine's question about the number of rhyming schemes (AABA, etc.)
# for N lines using K letters.

# Given a function, return a cached version of that function.
def cache_function(fn):
    cache = dict()

    def fn_memo(*args):
        if args in cache:
            return cache[args]

gsinclair

/* Word chains (ORAC Challenge Problems 2)
 *
 * Build a tree with all the letters in it, marking the word depth and (boolean)
 * terminator status of each letter. Remember where the leaves are (in a set). Then it's
 * an easy matter to find the leaf with the greatest word depth, build the correct path,
 * and emit all the words in that path.
 *
 * Attempt 1 failed -- all tests had memory limit exceeded. No memory limit was stated in
 * the problem.
 *

gsinclair

### Initialisation
### - Input number of items
### - Set up all arrays for all tasks
###   - item numbers
###   - description
###   - reserve
###   - number of bids
###   - highest bid

TESTING = False

gsinclair

### Part 0: We would like to have this function to use, but it's probably in your code already.

def is_factor(f, n):
  return (n % f == 0)

### Part 1: First we write a testing function.

def test_next_factor():
  nf = next_factor
  assert nf(10,3)  == 5

gsinclair

# Pre-release practice 2
#
# Students are aged 12-16.
# Students belong to house Saturn or Mars.
#   We will represent that with "S" or "M".

ALLOWABLE_AGES = range(12,17)
ALLOWABLE_HOUSES = ["S", "M"]

# The program gets information from the user to store

gsinclair

import random
import time

# 'timed' runs a function several times and prints the amount
# of time taken in seconds.
def timed(name, f, ntimes):
  start = time.time()
  for i in range(ntimes):
    f()
  elapsed = time.time() - start