title: Horners Method Polynomial Evaluation
signature: pub fn horners_method_polynomial_evaluation(poly: Vec<i32>, n: i32, x: i32) -> i64 {
test_code: use std::collections::HashMap;
  use std::collections::HashSet;
  use std::cmp::*;
  use std::collections::*;
  use std::fmt::*; 
  
  
  // SOLUTION CODE
  // ============================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE 
  // ============================================
  pub fn validate_solution(actual: i64, expected: i64)->bool{
  return actual==expected
  }
  pub fn driver(poly: Vec<i32>, n: i32, x: i32, expected: i64)->String{
      if validate_solution(PLACEHOLDER_FN_NAME(poly, n, x), expected) {
        return "PASSED".to_string();
      };
      return "FAILED".to_string();
  
  }
  
  fn main() {
      println!("TEST-0...{}", driver(
        Vec::from([0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1]), 10, 8, 
        73
      ));
      
      println!("TEST-1...{}", driver(
        Vec::from([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]), 20, 23, 
        292561
      ));
      
      println!("TEST-2...{}", driver(
        Vec::from([86, 62, 30, 27, 98, 75, 93, 37, 70, 16, 20, 74, 46, 74, 25, 59, 86, 32, 17, 90, 80, 10, 17]), 12, 12, 
        67907758875578
      ));
      
  }
source_py: def horners_method_polynomial_evaluation(poly, n, x):
      result = poly[0]
      for i in range(1, n):
          result = ((result * x) + poly[i])
      return result
source_cpp: int horners_method_polynomial_evaluation(vector<int> poly, int n, int x) {
    int result = poly [ 0 ];
    for ( int i = 1;
    i < n;
    i ++ ) result = result * x + poly [ i ];
    return result;
  }