Python Exercises, Practice and Solution: Write a Python program to sort a list of elements using the merge sort algorithm.
When the conquer step reaches the base step and we get two sorted subarrays A[p..q] and A[q+1, r] for array A[p..r], we combine the results by creating a sorted array A[p..r] from two sorted subarrays A[p..q] and A[q+1, r]. MergeSort Algorithm The MergeSort function...
Python uses the timsort algorithm. It is a hybrid stable sorting algorithm, derived from merge sort and insertion sort. It was implemented by Tim Peters in 2002 for use in the Python programming language. Python sort functions Python has two basic function for sorting lists:sortandsorted. Theso...
def recommend_movies(user_id, num_recommendations=5): # 找到与用户最相似的用户 similar_users = user_similarity_df[user_id].sort_values(ascending=False)[1:] # 找到用户没有评分的电影 unrated_movies = user_movie_ratings.loc[user_id][user_movie_ratings.loc[user_id] == 0].index # 对用户...
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If sep is not specified or is None, a different splitting algorithm is applied: runs of consecutive whitespace are regarded as a single separator, and the result will contain no empty strings at the start or end if the string has leading or trailing whitespace. Consequently, splitting an empty...
#include<algorithm>#include<iostream>#include<vector>//实现的是合并区间的算法,而该算法的核心逻辑基于排序和贪心策略classSolution{public:vector<vector<int>>merge(std::vector<std::vector<int>>&intervals){if(intervals.empty()){return{};}// lambda表达式,根据区间的起始位置进行排序std::sort(intervals...
8. Merge Sort Write a Python program to sort a list of elements using the merge sort algorithm. Note: According to Wikipedia "Merge sort (also commonly spelled mergesort) is an O(n log n) comparison-based sorting algorithm. Most implementations produce a stable sort, which means that the ...
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You have some overlapping closed intervals and you want to merge them. What is the algorithm for this? Solution Here are some examples with input and output: Input1: Intervals = [[1, 3], [2, 4], [6, 8], [9, 10]] Output1: [[1, 4], [6, 8], [9, 10]] Input2: Intervals...