My Awesome Book
Header2
Raw tags example:
# My Awesome Book
tags: tag1, tag2, tag3 is here, tag4,' tag5', let's encrypt, ,
Header3
ID - test
tags
H3*header3 - 中文测试
Header4
Header5
This file file serves as your book's preface, a great place to describe your book's content and ideas.
toc 测试
中文测试 $$F(x)=\frac{1}{x}$$
更新
删除线 链接
- 111
- 222
- 333
着重号
引用一段文字
Remove Element
TAGS: TAG_Array TAG_Two_Pointers TAG_Easy
Question
- leetcode: Remove Element
- lintcode: Remove Element
Problem Statement
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 length.
Example:
Given input array nums = [3,2,2,3], val = 3
Your function should return length = 2, with the first two elements of nums being 2.
- Try two pointers.
- Did you use the property of "the order of elements can be changed"?
- What happens when the elements to remove are rare?