Task: Given an array of N numbers. Print only those numbers, which are consist of 1, 2 and 3. Example: Input: 1 4 1 2 3 4 Output: 1 2 3 Here is the Code: Program in C++: #include<iostream> #include<bits/stdc++.h> using namespace std; bool isValid(int n) { int a; if(n==0) return 0; while(n!=0) { a=n%10; if(a==1||a==2||a==3) n/=10; else return 0; } return 1; } int numbers(int *a,int n) { map<int,int> m; for(int i=0;i<n;i++) { if(isValid(a[i])) { m[a[i]]++; } } int c=0; for(auto i=m.begin();i!=m.end();i++) { while(i->second--) cout<<i->first<<" "; c=1; } if(c==0) cout<<-1; } int main() { int t; cin>>t; while(t--) { int n; cin>>n; int a[n]; for(int i=0;i<n;i++) { cin>>a[i]; } numbers(a,n); cout<<endl; } re