python并集符号 |
您所在的位置:网站首页 › python中的交集符号怎么打 › python并集符号 |
参考链接: Python Set union() 两个给定集合的并集是包含两个集合的所有元素的最小集合。两个给定集合A和B的并集是一个由A的所有元素和B的所有元素组成的集合,这样就不会重复任何元素。 表示集合并集的符号是“ U”。示例: Input:Let set A = {2, 4, 5, 6} and set B = {4, 6, 7, 8} Output:{2, 4, 5, 6, 7, 8} Explanation:Taking every element of both the sets A and B, without repeating any element, we get a new set = {2, 4, 5, 6, 7, 8}.This new set contains all the elements of set A and all the elements of set B with no repetition of elements and is named as union of set A and B. 用法: set1.union(set2, set3, set4….) In parameters, any number of sets can be given 返回值: The union() function returns a set, which has the union of all sets(set1, set2, set3…) with set1. It returns a copy of set1 only if no parameter is passed. 以下是上述方法的Python3实现: # Python3 program for union() function set1 = {2, 4, 5, 6} set2 = {4, 6, 7, 8} set3 = {7, 8, 9, 10} # union of two sets print("set1 U set2:", set1.union(set2)) # union of three sets print("set1 U set2 U set3:", set1.union(set2, set3)) 输出: set1 U set2: {2, 4, 5, 6, 7, 8} set1 U set2 U set3:{2, 4, 5, 6, 7, 8, 9, 10} 实际应用: 在大多数概率问题中,需要集合并集的概念。 |
今日新闻 |
推荐新闻 |
CopyRight 2018-2019 办公设备维修网 版权所有 豫ICP备15022753号-3 |