1.2 用pop()方法删除指定位置的元素 与remove()不同,pop()方法可以通过索引删除元素,且返回被删除的元素。 # 示例代码my_list=[1,2,3,4,5]print("原列表:",my_list)# 删除索引为2的元素removed_element=my_list.pop(2)print("删除的元素:",removed_element)print("
print(array) 1. 如果使用了pop()方法并希望查看被删除的元素,也可以打印removed_element变量: print(removed_element) 1. 完整代码示例 下面是用于演示的完整代码示例: # 创建一个Python数组array=[1,2,3,4,5]# 确定要删除的索引index_to_remove=2# 使用del关键字删除指定索引的元素delarray[index_to_remove...
Given an array and a value, remove all instances of that value in place and return the new length. Do not allocate extra space for another array, you must do this in place with constant memory. The order of elements can be changed. It doesn't matter what you leave beyond the new leng...
Given an array nums and a value val, remove all instances of that value in-place and return the new length. Do not allocate extra space for another array, you must do this by modifying the input array in-place with O(1) extra memory. The order of elements can be changed. It doesn'...
Do not allocate extra space for another array, you must do this by modifying the input array in-place with O(1) extra memory. The order of elements can be changed. It doesn't matter what you leave beyond the new length. classSolution(object):defremoveElement(self, nums, val):""":typ...
[' Hello ', ' Programming ', ' Python ', ' World ', ' Delete ', ' Element '] The elements of the array after deletion: [' Programming ', ' Python ', ' World ', ' Delete ', ' Element '] 结论 我们可以清楚地观察到所有三个程序的输出都是相同的,这告诉我们通过使用所有三种方式成功...
public int removeElement(int[] nums, int val) { int i=0,j=nums.length-1;//i-左指针;j-右指针 while (i<=j){ if(nums[i]==val){ nums[i]=nums[j];//得到索引j的值,无需把索引j的值改为索引i的值 j--; }else i++; }
(2)remove(element):移除参数中指定的元素element,如果存在多个同样的值,则移除最左边的。不同于pop(),这个方法不返回任何值。 In [69]: example_list.remove(13) In [70]: example_list Out[70]: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11] (3)另一种方式是使用del命令,del list[0]类似于...
.discard(element):从集合中删除指定的元素,如果元素不存在,不会抛出错误。 my_set.remove(2) # 删除元素 2 my_set.discard(7) # 尝试删除不存在的元素 7,不会抛出错误 集合运算 集合支持数学上的集合运算,如并集、交集、差集等。 .union():并集操作,返回两个集合的所有元素。 .intersection():交集操作,返...
Delete the second element of thecarsarray: cars.pop(1) Try it Yourself » You can also use theremove()method to remove an element from the array. Example Delete the element that has the value "Volvo": cars.remove("Volvo") Try it Yourself » ...