Convert array into Zig-Zag fashion

class Solution {
  public:
    void zigZag(int n, vector<int> &arr) {
        for(int i=0;i<n-1;i++){
            if(i%2==0 && arr[i]>arr[i+1]){
                int temp=arr[i];
                arr[i]=arr[i+1];
                arr[i+1]=arr[i];
            }
            if(i%2==1 && arr[i]<arr[i+1]){
                int temp=arr[i];
                arr[i]=arr[i+1];
                arr[i+1]=temp;
            }
        }
    }};