leetcode 73 Set Matrix Zeroes 详细解答 leetcode 73 Set Matrix Zeroes 详细解答 解法1 此题如果空间复杂度为O(MN),则题目简单,只需要将为0的下标用一个集合保存起来,然后再判断所遍历的数字是否在集合内。 但根据题目要求,最好不要用空间复杂度为O(MN)的方法来做 解法2 只申请两个set用以保存数值为0
使用两个指针遍历数组,一个指向数值为0的元素,另一个指向数值不为0的元素,在遍历的过程中,不断交换两个指针的值。 例如, 比较简单的一道题。 [Code] 1: class Solution { 2: public: 3: voidmoveZeroes(vector<int>& nums) { 4:for(int zero_index =0, none_zero_index =0; 5: none_zero_index...
classSolution{public:voidmoveZeroes(vector<int>& nums){autoe = nums.end();//保存初始状态下数组的尾迭代器for(autoit = nums.begin(); it != nums.end();){if(it != e){//如果还没到达末尾if(*it ==0){//判断是否为0it = nums.erase(it);//删除操作会更新当前的迭代器nums.push_back(0...
Minimize the total number of operations. 2、代码实现 这个代码可以AC public class Solution { public void moveZeroes(int[] nums) { if (nums == null || nums.length == 0) return; int length = nums.length; int allZero = 0; for (int i = 0; i < length; ++i) { if (nums[i] ==...
维护两个指针,不断的往前移动。 AC代码: publicclassSolution {publicvoidmoveZeroes(int[] nums) {inti=0,j=0;while(i<nums.length){if(nums[i]==0){ j=Math.max(i,j);while(j<nums.length && nums[j]==0) j++;if(j==nums.length)return; ...
*/ class Solution { public: void moveZeroes(vector<int>& nums) { for(int left = 0, right = 0; right < nums.size(); right++) { if(nums[right] != 0) //如果遇到非零元素就移至前面,并更新非零元素指针 { swap(nums[left++], nums[right]); } } } };查看...
My Solutions to Leetcode problems. All solutions support C++ language, some support Java and Python. Multiple solutions will be given by most problems. Enjoy:) 我的Leetcode解答。所有的问题都支持C++语言,一部分问题支持Java语言。近乎所有问题都会提供多个算
My Solutions to Leetcode problems. All solutions support C++ language, some support Java and Python. Multiple solutions will be given by most problems. Enjoy:) 我的Leetcode解答。所有的问题都支持C++语言,一部分问题支持Java语言。近乎所有问题都会提供多个算
283 Move Zeroes 移动零 Description: Given an array nums, write a function to move all 0's to the end of it while maintaining the relative order of the non-zero elements. Example : Input: [0,1,0,3,12] Output: [1,3,12,0,0] ...
Leetcode - Move Zeroes Screenshot from 2016-01-25 17:14:49.png My code: publicclassSolution{publicvoidmoveZeroes(int[]nums){if(nums==null||nums.length==0)return;intdel=0;for(inti=0;i<nums.length;i++){if(nums[i]==0){del++;}else{nums[i-del]=nums[i];}}for(inti=nums.length...