Question

How to left shift array elements by N positions in C++

Answer 1

#include <bits/stdc++.h> 
   
int main() { 
    std::valarray<int> varr = { 2, 3, 5, 4, 7, 9 }; 
    int N = 3;
      
    varr = varr.cshift(N); 
   
    for (int &n : varr) { 
        std::cout << n << ", "; 
    } 
}
   
    
    
    
/*
run:
    
4, 7, 9, 2, 3, 5, 
    
*/

 

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