input: def evaluate_expression(operator, operand):
      """
      Provided with two lists, operator and operand. The first contains simple algebraic 
      operations, and the second is a list of integers. Utilize these two lists to construct 
      an algebraic expression and return the computed result.
  
      The available algebraic operations:
      Addition ( + ) 
      Subtraction ( - ) 
      Multiplication ( * ) 
      Floor division ( // ) 
      Exponentiation ( ** ) 
  
      Example:
      operator['+', '*', '-']
      array = [2, 3, 4, 5]
      outcome = 2 + 3 * 4 - 5
      => outcome = 9
  
      Note:
          The number of operators in the list is equal to the number of operands minus one.
          Operand is a list of non-negative integers.
          There is at least one operator in the operator list, and at least two operands in the operand list.
  
      """
output:     
      result = operand[0]
      for i, op in enumerate(operator):
          if op == '+':
              result += operand[i + 1]
          elif op == '-':
              result -= operand[i + 1]
          elif op == '*':
              result *= operand[i + 1]
          elif op == '//':
              result //= operand[i + 1]
          elif op == '**':
              result **= operand[i + 1]
      return result
  