Good Subset code
Python 3✅

A lot of sum Code
Python 3✅

class GFG {


static int xorOfArray(int arr[], int n)
{

int xor_arr = 0;


for (int i = 0; i < n; i++) {


xor_arr = xor_arr ^ arr[i];
}


return xor_arr;
}


public static void main (String[] args)
{

int arr[] = { 3, 9, 12, 13, 15 };
int n = arr.length;


System.out.println(xorOfArray(arr, n));

}
}

XOR CODE

Emil's Function
Java 8

All Test Cases Passed

Removing a character
Python 3

LMPKA Code
Python3

#include <map>
#include <set>
#include <list>
#include <cmath>
#include <ctime>
#include <deque>
#include <queue>
#include <stack>
#include <string>
#include <bitset>
#include <cstdio>
#include <limits>
#include <vector>
#include <climits>
#include <cstring>
#include <cstdlib>
#include <fstream>
#include <numeric>
#include <sstream>
#include <iostream>
#include <algorithm>
#include <unordered_map>
using namespace std;
char B[105];
int main(){
int n;
int ans=0;
scanf("%d", &n);
scanf("%s", B);
for(int i=2; B[i]; i++){
if(B[i-2] == '0' && B[i-1] == '1' && B[i] == '0') B[i] = '1', ans++;
}
printf("%d", ans);
return 0;
}

Beautiful string code

ArrayList<Integer> ar = new ArrayList<Integer>();
ArrayList<Integer> ar1 = new ArrayList<Integer>();
ArrayList<Integer> arr2= new ArrayList<Integer>();
ArrayList<Integer> sza= new ArrayList<Integer>();
ArrayList<Integer> p_n= new ArrayList<Integer>();

Scanner sc = new Scanner(System.in);

int a_size= sc.nextInt();
int m_size=sc.nextInt();
int[] a = new int[a_size];
for(int i=0;i<a_size;i++){
a[i]=sc.nextInt();
arr2.add(a[i]);
}
int[] p = new int[m_size];
for(int i=0;i<m_size;i++){
p[i]=sc.nextInt();
p_n.add(p[i]);
}
int[] sz=new int[m_size];
for(int i=0;i<m_size;i++){
sz[i]=sc.nextInt();
sza.add(sz[i]);
}

for(int i=0;i<a_size;i++)
{
for(int j=0;j<m_size;j++)
{
if(a[i]==p[j])
{
ar.add(p[j]);
}
}
}
int [] fr = new int [ar.size()];
int visited = -1;
for(int i = 0; i < ar.size(); i++){
int count = 1;
for(int j = i+1; j < ar.size(); j++){
if(ar.get(i).equals(ar.get(j))){
count++;
fr[j] = visited;
}
}
if(fr[i] != visited)
fr[i] = count;
}

for(int i = 0; i < fr.length; i++){
if(fr[i] != visited)
ar1.add(fr[i]);
}
ArrayList<Integer> pnew = new ArrayList<Integer>();
for(int l=0;l<sz.length;l++)
{
for(int h=0;h<sza.get(l);h++)
{
pnew.add(p_n.get(l));
}
}
int count=0;
for(int i = 0; i < pnew.size(); i++)
{
for(int j = i+1; j < pnew.size(); j++)
{
if(pnew.get(i).equals(pnew.get(j)))
{
count++;
}
}
}
System.out.println(count);
}
}


Sequences concatenation code

Xor Operation code

Rectangular operation Code ✅

Happy Hour
Python 3

MNC code
c++

String Updation code
Python 3✅

Book Distribution
C++

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