leetcode
2 分鐘 閱讀文 (大約 372 個字)

leetcode-27-remove-element

Description

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’t matter what you leave beyond the new length.

Example 1:

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Given nums = [3,2,2,3], val = 3,

Your function should return length = 2, with the first two elements of nums being 2.

It doesn't matter what you leave beyond the returned length.

Example 2:

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Given nums = [0,1,2,2,3,0,4,2], val = 2,

Your function should return length = 5, with the first five elements of nums containing 0, 1, 3, 0, and 4.

Note that the order of those five elements can be arbitrary.

It doesn't matter what values are set beyond the returned length.

Clarification:

Confused why the returned value is an integer but your answer is an array?

Note that the input array is passed in by reference, which means modification to the input array will be known to the caller as well.

Internally you can think of this:

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// nums is passed in by reference. (i.e., without making a copy)
int len = removeElement(nums, val);

// any modification to nums in your function would be known by the caller.
// using the length returned by your function, it prints the first len elements.
for (int i = 0; i < len; i++) {
    print(nums[i]);
}
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java面试 1
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leetcode Array TwoPointers 1
leetcode Easy Array HashTable 1
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markdown 1
maven 1
mysql 1
oracle 2
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个人观点 1
基础编程题目集 51
数据结构与算法题目集（中文） 65
浙大版《C语言程序设计实验与习题指导（第3版）》题目集 179
浙大版《C语言程序设计（第3版）》题目集 116
簡歷 1
編譯原理 1

最新文章

彙整

標籤

Hexo 1
Hibernate 1
MinGW 1
bugs 1
cpp 1
findbugs 1
java 3
java面试 1
leetcode 13
leetcode Array BinarySearch 1
leetcode Array TwoPointers 1
leetcode Easy Array HashTable 1
leetcode Easy Math 1
leetcode LinkedList 6
leetcode Stack 1
leetcode Stack Queue 2
leetcode TwoPointers 1
leetcode TwoPointers String 1
markdown 1
maven 1
mysql 1
oracle 2
个人简历 1
个人观点 1
基础编程题目集 51
数据结构与算法题目集（中文） 65
浙大版《C语言程序设计实验与习题指导（第3版）》题目集 179
浙大版《C语言程序设计（第3版）》题目集 116
簡歷 1
編譯原理 1
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