On Tue, 1 Apr 2008 09:11:12 -0700 (PDT), [EMAIL PROTECTED] wrote: >Hey guys >I haev this homework assignment due today >I don't necessarily want the answers, but need help on how to approach >it/the steps i need to solve the problems
I can see at least two possible approaches: Approach 1: (i) post the problems on the internet (ii) carefully copy the solutions Approach 2: (i) learn a little bit about the material you were supposed to learn I'll leave the second step in Approach 2 as an exercise... >Thanks > ># (2 Points) Write a python function howMany(item,lst) which accepts >an item and a lst of items and returns the number of times item occurs >in lst. For example, howMany(3,[1,2,3,2,3]) should return 2. > ># (2 Points) Write a python function upTo(n) which accepts a non- >negative number n and returns a list of numbers from 0 to n. For >example, upTo(3) should return the list [0, 1, 2, 3]. > ># (2 Points) Write a python function duplicate(lst) which accepts a >lst of items and returns a list with the items duplicated. For >example, duplicate([1,2,2,3]) should return the list [1, 1, 2, 2, 2, >2, 3, 3]. > ># (2 Points) Write a python function dotProduct(a,b) which accepts two >lists of integers a and b that are of equal length and which returns >the dot product of a and b. I.e., the sum a0 * b0 + ... + an-1 * bn-1 >where n is the length of the lists. For example: > >dotProduct([1,2,3],[4,5,6]) is 1*4 + 2*5 + 3*6 = 4 + 10 + 18 = 32 > ># (2 Points) A pair (exp0, exp1) is a combination of expressions that >are attached together by their joint membership in the pair. For >example: > >>>> (1+2, 'This') >(3, 'This') > >A component of a pair can be obtained using an index in brackets as >with lists (and strings!). For example: > >>>> (33,44)[0] >33 > >Write a function zip(lst1, lst2) such that zip accepts two equal >length lists and returns a list of pairs. For example, zip(['a', 'b', >'c'], [10, 20, 30]) should evaluate to the list [('a', 10), ('b', 20), >('c', 30)]. > ># (2 Points) Write a function unzip(lst) such that unzip accepts a >list of pairs and returns two lists such that lst == zip(unzip(lst)). >For example, unzip([('a', 10), ('b', 20), ('c', 30)] should evaluate >to the pair (['a', 'b', 'c'], [10, 20, 30]). > ># (2 Points) Write a python function isAscending(lst) which accepts a >non-empty list of integers and returns True if the numbers in the list >are in ascending order. Otherwise it should return False. For example, >isAscending([1]) should evaluate to True while isAscending([1,2,2]) >should return False. David C. Ullrich -- http://mail.python.org/mailman/listinfo/python-list