使用remove()方法:在循环中调用remove()方法删除找到的元素,直到列表中没有该元素为止。 代码示例: python def remove_all_elements(lst, val): while val in lst: lst.remove(val) return lst # 示例列表 example_list = [1, 2, 3, 2, 4, 2, 5] # 要删除的元素 value_to_remove = 2 # 调用函...
Let's say you have two lists x and y and you want to remove all elements in x that are in y. You could do something like this: new_list=[]
for (int i = 0; i < list.size(); i++) { if (Objects.equals(list.get(i), 2)) { // IDEA警告:Suspicious 'List.remove()' in the loop list.remove(i); // !!!回退索引!!! i--; } } System.out.println(list); // [1, 3, 4] Assertions.assertEquals(list.size(), 3); } ...
It is possible to delete list elements with remove, pop, and clear functions and the del keyword. Python list removeThe remove function removes the first occurrence of the given value. It raises ValueError if the value is not present.
list_data=[[1,2,3],[4,5,6],[7,8,9],[4,5,6]]elements_to_remove=[4,5,6]forrowinlist_data:ifall(elementinrowforelementinelements_to_remove):list_data.remove(row)print(list_data) 1. 2. 3. 4. 5. 6. 7. 8. 9.
The order of elements can be changed. It doesn't matter what you leave beyond the new length. classSolution(object):defremoveElement(self, nums, val):""":type nums: List[int] :type val: int :rtype: int"""whilevalinnums: nums.remove(val)returnlen(nums)...
Given an arraynumsand a valueval, remove all instances of that valuein-placeand return the new length. Do not allocate extra space for another array, you must do this bymodifying the input array in-placewith O(1) extra memory. The order of elements can be changed. It doesn't matter ...
my_list = ['a','b','c','d','e']#num of elements we want to removen =2print(my_list[:-n]) Output: ['a', 'b', 'c'] When thestartoption isundefined, it is considered as 0 index. Here in the example, we set n to2and usedmy_list[:-2], which means extract all the...
Option 1: Create a new list containing only the elements you don't want to remove¶ 1a) Normal List comprehension¶ Use list comprehension to create a new list containing only the elements you don't want to remove, and assign it back to a. ...
The order of elements can be changed. It doesn't matter what you leave beyond the new length. 代码: oj测试通过 Runtime: 43 ms 1classSolution:2#@param A a list of integers3#@param elem an integer, value need to be removed4#@return an integer5defremoveElement(self, A, elem):6length...