class Solution { 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++; } return j+1; } } Python3: 代码语言:...
代码(Python3) class Solution: def removeElement(self, nums: List[int], val: int) -> int: # l 表示不等于 val 的数字个数,也是下一个可以放入数字的下标,初始化为 0 l: int = 0 # 遍历剩余所有的数字 for r in range(len(nums)): # 如果当前数字不等于 val ,则 nums[r] 不需要移除,放入...
1classSolution:2#@param A a list of integers3#@param elem an integer, value need to be removed4#@return an integer5defremoveElement(self, A, elem):6length = len(A)-17j =length8foriinrange(length,-1,-1):9ifA[i] ==elem:10A[i],A[j] =A[j],A[i]11j -= 112returnj+1 思路...
2. Remove Elements from Two Lists Using Python remove() First, we will iterate the first list using for loop and check if the elements present in the second list or not. If the element is present, we will remove that iterated element using the list.remove() method in both lists. In...
2. Remove First Element from List Using pop() Method You can remove the first element from a list using the pop() method in Python by passing an index 0 as argument to the pop() method. This will remove the first element from the list and return the element it removed. Related: ...
力扣——remove element(删除元素) python实现 题目描述: 中文: 给定一个数组 nums 和一个值 val,你需要原地移除所有数值等于 val 的元素,返回移除后数组的新长度。 不要使用额外的数组空间,你必须在原地修改输入数组并在使用 O(1) 额外空间的条件下完成。
Python3: class Solution: def removeElement(self, nums: List[int], val: int) -> int: i=0 j=len(nums)-1 while i<=j: if(nums[i]==val): nums[i]=nums[j] j-=1 else:i+=1 return j+1 总结: 这道题本身很简单,只要搞清思路,一起都会变得明了。
States = {"Hyderabad", "Bangalore", "Mumbai", "Pune", "Ahmedabad", "Kolkata", "Nagpur", "Nashik", "Jaipur", "Udaipur", "Jaisalmer"} #The element name to be discarded is not present in the data set States.discard("Kumbhalgarh") #If the element will not be present in the data ...
[Leetcode][python]Remove Element/移除元素 题目大意 去掉数组中等于elem的元素,返回新的数组长度,数组中的元素不必保持原来的顺序。 解题思路 双指针 使用头尾指针,头指针碰到elem时,与尾指针指向的元素交换,将elem都换到数组的末尾去。 代码 判断与指定目标相同...
In Python, a string represents a series of characters. A string is bookended with single quotes or double quotes on each side. How do you remove characters from a string in Python? In Python, you can remove specific characters from a string using replace(), translate(), re.sub() or a...