CODE EXAMPLE FOR JAVA

java to python

#include<stdio.h>
int stack[10000000]={0};
int top=-1;
 
void push(int c)
{
    stack[++top]=c;
}
 
void pop()
{
    stack[top--]=0;
}
 
int main()
{
    int N,max=0;
    int order=1;
    scanf("%d",&N);
    int arr[N];
    for(int i=0;i<N;i++)
    {
        scanf("%d",&arr[i]);
        if(max<arr[i])
        max=arr[i];
    }
    
    for(int i=0;i<N;i++)
    {
        while(top!=-1 && stack[top]==order)
        {
            order++;
            pop();
        }
        if(arr[i]==order)
        {
            order++;
          
        }
        else
        push(arr[i]);
        
    }
      while(top!=-1 && stack[top]==order)
        {
            order++;
            pop();
        }
    
    if(order==max+1)
    printf("Happy");
    else
    printf("Sad");
    
    
}