Maximum Number of Integers to Choose From a Range I Smallest Missing Non-negative Integer After Operations Maximum Number of Integers to Choose From a Range II 参考资料: https://leetcode.com/problems/first-missing-positive/ https://leetcode.com/problems/first-missing-positive/discuss/17071/My-short-c++-solution-O(1)-space-...
本文是根据穷码农的LeetCode刷题建议而进行专项练习时记录的心得。这一次的训练加强了自己对递归的理解与熟练度,毕竟针对深度优先搜索,我是全部使用递归解决的问题。尽管许多题目我没能完全独立解决,需要解析进…
1publicstaticintFirstMissingPositive(int[] A)2{3BitArray ba =newBitArray(int.MaxValue);4intmax =int.MinValue;5foreach(intnuminA)6{7if(num > max)//set the maximum number in A[]8max =num;9if(num >0)//ignore the negative number10ba[num] =true;11}1213//if no positive number in...
Demonstrate all the questions on LeetCode in the form of animation.(用动画的形式呈现解LeetCode题目的思路) - firstgod1/LeetCodeAnimation
Leetcode class Solution: def smallestNumber(self, num: int) -> int: nums = list(str(num)) if nums[0] == '-': nums[1:] = sorted(nums[1:], reverse=True) else: nums.sort() for i in range(len(nums)): if nums[i] != '0': ...
If you see a number that is 0, or negative, or larger the the array length, you know it doesn't make any contribution to the positive number sequence, therefore it's a garbage number. Swap a garbage number to the end of the array. There is another case where garbage number could occ...
integers N (1 < N ≤ 300) and M, being the total number of people and the number of friendship relations, respectively. Then M lines follow, each gives a pair of friends. Here a person is represented by a 4-digit ID. To tell their genders, we use a negative sign to represent ...