Easy Problems to Get Started
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| LEARNDSA |
Buy Please
#include <iostream>
using namespace std;
int main() {
int a,b,x,y;
cin>>a>>b>>x>>y;
cout<<a*x+b*y;
return 0;
}
Is Both Or Not
#include <iostream>
using namespace std;
int main() {
int n;
cin >> n;
if(n%5==0 && n%11==0) cout<<"BOTH";
else if(n%5==0 || n%11==0) cout<<"ONE";
else cout<<"NONE";
return 0;
}
Factors Finding
#include <iostream>
using namespace std;
int main() {
int n,cnt=0,a[100];
cin>>n;
for(int i=1;i<=n;i++){
if(n%i==0){
cnt++;
}}
cout<<cnt<<endl;
for(int i=1;i<=n;i++){
if(n%i==0)
{cout<<i<<" ";}
}
return 0;
}
Find Second Largest
#include <iostream>
using namespace std;
int main() {
int a,b,c;
cin>>a>>b>>c;
if(a>=b && a>=c)
{
if(b>c) cout<<b;
else cout<<c<<endl;
}
if(b>=a && b>=c)
{
if(a>c) cout<<a;
else cout<<c<<endl;
}
if(c>=b && c>=a)
{
if(a>b) cout<<a;
else cout<<b<<endl;
}
return 0;
}
Range Odd
#include <bits/stdc++.h>
using namespace std;
int main() {
int a,b;
cin>>a>>b;
if(a%2!=0){
for(int i=a;i<=b;i+=2)
{cout<<i;
cout<<" ";}
}else{
for(int i=a+1;i<=b;i+=2)
{cout<<i;
cout<<" ";}
}
return 0;
}
Raju and His Trip
#include <iostream>
using namespace std;
int main() {
int n;
cin>>n;
if(n%5==0 || n%6==0) cout<<"YES";
else cout<<"NO";
return 0;
}
Reverse Me
#include <iostream>
using namespace std;
int main() {
int n;
cin>>n;
int a[n];
for(int i=0;i<n;i++) {cin>>a[i];}
for(int i=n-1;i>=0;i--){
cout<<a[i]<<" ";
}
return 0;
}
Find Me
Solution 1 :
#include<bits/stdc++.h>
using namespace std;
bool present(int arr[],int n,int k)
{
for(int i=0;i<n;i++)
{
if(arr[i]==k)
return true;
}
return false;
}
int main()
{
int n,k;
cin>>n>>k;
int arr[n];
for(int i=0;i<n;i++)
cin>>arr[i];
if(present(arr,n,k))
cout<<"1"<<endl;
else
cout<<"-1"<<endl;
}
Solution 2 :
#include <bits/stdc++.h>
using namespace std;
int main() {
int n, k;
cin >> n >> k;
vector<int> a(n);
for (auto &e : a) cin >> e;
bool present = false;
for (auto e : a) present |= (e == k);
cout << (present ? 1 : -1) << endl;
}
Valid Triangle Or Not
#include<bits/stdc++.h>
using namespace std;
bool isValid(int a, int b, int c)
{
if (a + b <= c || a + c <= b || b + c <= a)
return false;
else
return true;
}
int main()
{
int a,b,c;
cin>>a>>b>>c;
if (isValid(a, b, c))
cout << "YES";
else
cout << "NO";
}
Reverse Star Pattern
#include <iostream>
using namespace std;
int main() {
int n;
cin>>n;
for(int i=1;i<=n;i++){
for(int j=n-i;j>=1;j--)
cout<<" ";
for(int k=1;k<=i;k++)
cout<<"*";
cout<<endl;
}
return 0;
}
Add Natural Numbers
#include <iostream>
using namespace std;
int main() {
long long int n;
cin>>n;
cout<<(n*(n+1))/2;
return 0;
}
Sum Is Everywhere
#include <iostream>
using namespace std;
int main()
{
long n;
cin >> n;
cout << n * n << " "; //formula for odd numbers
cout << n * (n + 1); //formula for even numbers
return 0;
}
Triangle With Angle
#include "bits/stdc++.h"
using namespace std ;
int main(){
int a,b,c;
cin>>a>>b>>c ;
cout <<(a+b+c==180&&a&&b&&c?"YES":"NO") ;
}
Triangle Everywhere
#include <iostream>
using namespace std;
int main()
{
int a, b, c;
cin >> a >> b >> c;
if (a + b > c && b + c > a && c + a > b)
{
if (a == b && b == c)
cout << "1";
else if (a == b || b == c || c == a)
cout << "2";
else
cout << "3";
}
else
cout << "-1";
return 0;
}
Alternative Square Pattern
#include <iostream>
using namespace std;
int main()
{
int n, k = -4;
cin >> n;
for (int i = 1; i <= n; i++)
{
if (i % 2 != 0)
{
k += 4;
for (int j = 1; j <= 5; j++)
cout << ++k << " ";
cout << endl;
}
else
{
k += 6;
for (int j = 1; j <= 5; j++)
cout << --k << " ";
cout << endl;
}
}
return 0;
}