3 选择排序的Python实现 不过话说回来,两个算法的代码确实又挺像的,所以我们可以把冒泡排序的代码copy过来修修改改试试。 def selectionsort(list): ##升序排序 print("原始列表: ", list) for loc in range(len(list)-1): ##loc取值是从0到9 for i in range(loc+1, len(list)): ##假设loc=0,其...
第二行获取需要处理的数据的长度,比如有个队列 list = [1, 2, 3, 4],那 n = 4. def selection_sort(list): n = len(list) for i in range(0, n - 1) 1. 2. 3. 第三行从零开始循环数据直至最后一个元素,由于 python 的数据第一个元素下标为零,所以数据的最后位置要减一,即 n - 1。 d...
Python 代码实现 # selection_sort 代码实现 from typing import List def selection_sort(arr: List[int]): """ 选择排序 :param arr: 待排序的List :return: 选择排序是就地排序(in-place) """ length = len(arr) if length <= 1: return for i in range(length): min_index = i min_val = ...
Python 代码实现 # selection_sort 代码实现 from typing import List def selection_sort(arr: List[int]): """ 选择排序 :param arr: 待排序的List :return: 选择排序是就地排序(in-place) """ length = len(arr) if length <= 1: return for i in range(length): min_index = i min_val = ar...
2. python3代码实现: # -*- coding: utf-8 -*- """ Created on Tue Jul 9 17:42:50 2019 @author: ZQQ """ def selectionSort(input_list): ''' 函数说明: ''' length = len(input_list) if length == 0 : return [] else:
测试代码中,我们还用了python自带的sort方法,通过 "assert ssort.items == items" 一行语句是来验证我们的选择排序算法运行结果的正确性。并且加了timer,来比较我们的算法和python自带的sort方法的运行时间。 运行结果表明,排序的结果是一样的,但我们的算法在数组很大的时候,比如数组size 在4000左右,需要耗时1s多,...
Python Java C C++ # Selection sort in PythondefselectionSort(array, size):forstepinrange(size): min_idx = stepforiinrange(step +1, size):# to sort in descending order, change > to < in this line# select the minimum element in each loopifarray[i] < array[min_idx]: min_idx = ...
List of Lecture TopicsLecture 1 – Introduction to Python:• Knowledge• Machines• Languages• Types• Variables• Operators and BranchingLecture 2 – Core elements of programs:• Bindings• Strings• Input/Output• IDEs• Control Flow• Iteration• Guess and CheckLecture 3 – ...
Worst Case (Reverse List) Above GIF Images are generated throughAlgorithmsmobile app. Java Program Implementation Let's implement the selection sort algorithm: public void sort(int arr[]) { int n=arr.length; int min_ind; for(int i=0;i<n;i++) ...
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