SuryaPratapK

class Solution {
    vector<vector<int>> mem;
    bool subsetSum(vector<int>& nums,int n,int pos,int sum)
    {
        if(sum==0)  //Sum found
            return true;
        else if(pos>=n || sum<0) //Out of bounds
            return false;
        if(mem[pos][sum]!=-1)
            return mem[pos][sum];

SuryaPratapK

static int speedUp=[](){
    std::ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    return 0;
}();

class Solution {
public:
    int ladderLength(string beginWord, string endWord, vector<string>& wordList) {  

SuryaPratapK

class Solution {
public:
    int singleNumber(vector<int>& nums) {
        ios_base::sync_with_stdio(false);
        cin.tie(NULL);
        
        //Using XOR + AND combination
        int ones = 0;
        int twos = 0;
        for(auto ele: nums)

SuryaPratapK

class Solution {
    void dfs(vector<vector<int>>& image, int sr, int sc,int newColor,int rows,int cols,int source)
    {
        if(sr<0 || sr>=rows || sc<0 || sc>=cols)
            return;
        else if(image[sr][sc]!=source)
            return;
        
        image[sr][sc] = newColor;
        

SuryaPratapK

class Solution {
public:
    int subarraySum(vector<int>& nums, int k) {
        
        //For fast I/O in C++
        ios_base::sync_with_stdio(false);
        cin.tie(NULL);
        
        int n = nums.size();
        if(n==0)

SuryaPratapK

// C++ program to implement a stack that supports 
// getMinimum() in O(1) time and O(1) extra space. 
#include <bits/stdc++.h> 
using namespace std; 

// A user defined stack that supports getMin() in 
// addition to push() and pop() 
struct MyStack 
{ 
	stack<int> s; 

SuryaPratapK

	
// A Stack based C++ program to find next 
// greater element for all array elements. 
#include <bits/stdc++.h> 
using namespace std; 

/* prints element and NGE pair for all 
elements of arr[] of size n */
void printNGE(int arr[], int n) { 
stack < int > s; 

SuryaPratapK

// Program to find minimum number of platforms 
// required on a railway station 
#include<iostream> 
#include<algorithm> 

using namespace std; 

// Returns minimum number of platforms reqquired 
int findPlatform(int arr[], int dep[], int n) 
{ 

cruiz24

Implementation using C++ programming

#include <iostream>
#define SIZE 5   /* Size of Circular Queue */

using namespace std;

class Queue {
private:
    int items[SIZE], front, rear;

shubham100795

#include<iostream>
#include<cstdlib>
using namespace std;

struct node{
int data;
struct node *left;
struct node *right;
};