From 88bb9f38f5ac6ba945b559405b5425ef720a947c Mon Sep 17 00:00:00 2001 From: BBaoVanC Date: Tue, 6 Oct 2020 16:00:52 -0500 Subject: [PATCH] Add files Date modified: insertion.py: 2017-09-10 13:07 merge.py: 2017-09-10 13:54 numgen.py: 2017-09-10 13:15 sorting.py: 2018-08-26 16:08 --- insertion.py | 53 ++++++++++++++++++++++++++++++++ merge.py | 86 ++++++++++++++++++++++++++++++++++++++++++++++++++++ numgen.py | 48 +++++++++++++++++++++++++++++ sorting.py | 40 ++++++++++++++++++++++++ 4 files changed, 227 insertions(+) create mode 100755 insertion.py create mode 100755 merge.py create mode 100755 numgen.py create mode 100755 sorting.py diff --git a/insertion.py b/insertion.py new file mode 100755 index 0000000..6bba709 --- /dev/null +++ b/insertion.py @@ -0,0 +1,53 @@ +""" +Insertion Sort + +by BBaoVanC + +This import uses the insertion method of sorting. +Pros: + Fast for small lists +Cons: + Gets increasingly slower once you get past a certain amount of numbers +""" + + +def sort(A): + for j in range(1, len(A)): + # print(j) + key = A[j] + i = j - 1 + while i >= 0 and A[i] > key: + A[i + 1] = A[i] + i = i - 1 + A[i + 1] = key + # print(str(A)) + return A + + +if __name__ == '__main__': + from timeit import default_timer as timer + + with open("nums.txt") as f: + A = f.readlines() + A = [x.strip() for x in A] + A = [int(x) for x in A] + start = timer() + + A = sort(A) + + elapsed_time = timer() - start + print("TIME: %.16f" % elapsed_time) + + # print("Opening file") + f = open("sort_insertion.txt", "w+") + nums2 = list() + for item in A: + item = str(item) + "\n" # add newline character to each item in the nums2 list... + nums2.append(item) # ... + nums2[-1] = nums2[-1].strip() # remove newline character from last item in list + for item in nums2: + # print("Writing number: " + item) + f.write(item) # write each number to the file + # print("Closing file") + f.close() + # print("FINISHED") diff --git a/merge.py b/merge.py new file mode 100755 index 0000000..caaee67 --- /dev/null +++ b/merge.py @@ -0,0 +1,86 @@ +""" +Merge Sort + +by BBaoVanC + +This import uses the merge method of sorting. +Pros: + Time doesn't increase as fast as insertion when you add more numbers. +Cons: + Not the most efficient for small lists +""" + + +def sort(A): + def merge(A, p, q, r): + # print(A) + n1 = q - p + # print("n1: " + str(n1)) + n2 = r - q - 1 + # print("n2: " + str(n2)) + L = [] + R = [] + for num in range(0, n1 + 2): + L.append(0) + for num in range(0, n2 + 2): + R.append(0) + for i in range(0, n1 + 1): + # print("i: " + str(i)) + # print("p + i: " + str(p + i)) + L[i] = A[p + i] + for j in range(0, n2 + 1): + R[j] = A[q + j + 1] + # print("n1: " + str(n1)) + # print("n2: " + str(n2)) + L[n1 + 1] = float('inf') + R[n2 + 1] = float('inf') + i = 0 + j = 0 + for k in range(p, r + 1): + if L[i] <= R[j]: + A[k] = L[i] + i += 1 + else: + A[k] = R[j] + j += 1 + + return A + + def merge_sort(A, p, r): + if p < r: + q = int(((p + r + 1) / 2) - 1) + A = merge_sort(A, p, q) + A = merge_sort(A, q + 1, r) + A = merge(A, p, q, r) + return A + + A = merge_sort(A, 0, len(A) - 1) + return A + + +if __name__ == '__main__': + from timeit import default_timer as timer + + with open("nums.txt") as f: + A = f.readlines() + A = [x.strip() for x in A] + A = [int(x) for x in A] + + start = timer() + sorted_a = sort(A) + elapsed_time = timer() - start + print("TIME: %.16f" % elapsed_time) + + # print("Opening file") + f = open("sort_merge.txt", "w+") + nums2 = list() + for item in sorted_a: + item = str(item) + "\n" # add newline character to each item in the nums2 list... + nums2.append(item) # ... + nums2[-1] = nums2[-1].strip() # remove newline character from last item in list + for item in nums2: + # print("Writing number: " + item) + f.write(item) # write each number to the file + # print("Closing file") + f.close() + # print("FINISHED") diff --git a/numgen.py b/numgen.py new file mode 100755 index 0000000..e18cb76 --- /dev/null +++ b/numgen.py @@ -0,0 +1,48 @@ +""" +Random Number Generator + +by BBaoVanC + +Generates a list of random numbers based on how many you want +""" +import random + +DO_DEBUG = False + + +def generate(count, digits, debug): + numbers = list() # create a new blank list for storing our numbers + count = int(count) + digits = int(digits) + debug = bool(debug) + n = 0 + while n < count: + maxnum = "9" * digits + maxnum_int = int(maxnum) + number = random.randint(0, maxnum_int) + if debug: + print("Generated number: " + str(number)) + numbers.append(number) # add a random number from 0 to 999 to the list + n = n + 1 # increment our counter + return numbers # return our list of numbers + + +if __name__ == '__main__': + amount = input("Amount: ") + length = input("Length: ") + nums = generate(int(amount), int(length), DO_DEBUG) + + f = open("nums.txt", "w+") + nums2 = list() + for item in nums: + item = str(item) + "\n" # add newline character to each item in the nums2 list... + nums2.append(item) # ... + nums2[-1] = nums2[-1].strip() # remove newline character from last item in list + for item in nums2: + if DO_DEBUG: + print("Writing number: " + item) + + f.write(item) # write each number to the file + if DO_DEBUG: + print("Closing file") + f.close() diff --git a/sorting.py b/sorting.py new file mode 100755 index 0000000..fff1f23 --- /dev/null +++ b/sorting.py @@ -0,0 +1,40 @@ +""" +Sorting + +by BBaoVanC + +Compares times between sorting systems. +""" + + +from timeit import default_timer as timer +import numgen +import merge +import insertion + +DO_DEBUG = False + +f = open("compare_sort.csv", "w+") # format: Amount,Insertion,Merge + +n = 0 +while n <= 1000: + A = numgen.generate(n, 8, DO_DEBUG) + print("Generated list with length: %i" % n) + start1 = timer() + sort1 = insertion.sort(A) + elapsed_time1 = timer() - start1 + print("Insertion test finished") + + start2 = timer() + sort2 = merge.sort(A) + elapsed_time2 = timer() - start2 + print("Merge test finished") + + f.write("%i,%.8f,%.8f\n" % (len(A), elapsed_time1, elapsed_time2)) + # print("Amount: %i" % len(A)) + # print("Insertion: %.5f" % elapsed_time1) + # print("Merge: %.5f" % elapsed_time2) + # print("--------------------------------") + + n += 1 +f.close()