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题解 | #和为K的连续子数组#

class Solution { public: /** * max length of the subarray sum = k * @param arr int整型vector the array * @param k int整型 target *...

C++

2021-12-16

0 374

题解 | #完全二叉树结点数#

/** struct TreeNode { int val; struct TreeNode *left; struct TreeNode *right; TreeNode(int x) : val(x), left(NULL), right(...

C++

2021-12-14

0 501

题解 | #丑数#

class Solution { public: int GetUglyNumber_Solution(int index) { // 动态规划 vector<int> dp(index + 1); dp[1] = 1; ...

C++

2021-12-13

0 423

题解 | #丑数#

class Solution { public: int GetUglyNumber_Solution(int index) { int factors[] = {2, 3, 5}; unordered_set<long> hash; // 哈希表...

C++

2021-12-13

0 335

题解 | #数字在升序数组中出现的次数#

class Solution { public: int GetNumberOfK(vector<int> data ,int k) { if(data.size() < 1) return 0; int l = 0,...

C++

2021-12-09

0 300

题解 | #旋转数组的最小数字#

class Solution { public: int minNumberInRotateArray(vector<int> rotateArray) { int l = 0, r = rotateArray.size() - 1; // 二分法...

C++

2021-12-09

0 305

题解 | #孩子们的游戏(圆圈中最后剩下的数)#

class Solution { public: int LastRemaining_Solution(int n, int m) { if(n <= 0) return -1; // 当n==1时返回0 // f(n...

C++

2021-12-08

0 299

题解 | #第一个只出现一次的字符#

class Solution { public: int FirstNotRepeatingChar(string str) { map<int, int> mp; int res = -1; for(int i = 0; i &l...

C++

2021-12-07

0 282

题解 | #扑克牌顺子#

class Solution { public: bool IsContinuous( vector<int> numbers ) { int flag = 0; // 保存整数，扑克牌大小[0, 13]，而int位数有32个，使用int的低13位来判断是否出现...

C++

2021-12-06

0 351

题解 | #扑克牌顺子#

class Solution { public: bool IsContinuous( vector<int> numbers ) { sort(numbers.begin(), numbers.end()); int jokerNumber = ...

C++

2021-12-06

0 323