LC 228. Summary Ranges
https://leetcode.com/problems/summary-ranges/description/?envType=study-plan-v2&envId=top-interview-150
class Solution {
public:
vector<string> summaryRanges(vector<int>& nums)
LC 128. Longest Consecutive Sequence
https://leetcode.com/problems/longest-consecutive-sequence/description/?envType=study-plan-v2&envId=top-interview-150
class Solution {
public:
int longestConsecutive(vector<int>& nums) {
int ans = 0;
LC 202. Happy Number
https://leetcode.com/problems/happy-number/description/?envType=study-plan-v2&envId=top-interview-150
class Solution {
public:
int getNext(int n) {
int res = 0;
string str = to_string(
LC 49. Group Anagrams
https://leetcode.com/problems/group-anagrams/description/?envType=study-plan-v2&envId=top-interview-150
class Solution {
public:
vector<vector<string>> groupAnagrams(vector<string&
LC 290. Word Pattern
https://leetcode.com/problems/word-pattern/description/?envType=study-plan-v2&envId=top-interview-150
class Solution {
public:
bool wordPattern(string pattern, string s) {
unordered_map<char, string&