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    "# CSE 160 Section 2 Worksheet: for Loops and Functions"
   ]
  },
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   "metadata": {},
   "source": [
    "## Problem 1\n",
    "\n",
    "Fill in the necessary code to count the number of times the letter “l” appears in the list words.\n",
    "```\n",
    "words = [‘hello’, ‘world’, ‘python’, ‘yellow’]\n",
    "l_count = 0\n",
    "\n",
    "\n",
    "\n",
    "\n",
    "\n",
    "print(l_count)\n",
    "```\n",
    "The output should be 5."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Problem 2\n",
    "\n",
    "Write a function, over_twenty(ages) to count the number of people over 20 years old in the list\n",
    "ages.\n",
    "```\n",
    " ages = [20, 21, 20, 22, 19, 18, 14, 35]\n",
    " \n",
    " \n",
    " \n",
    " \n",
    " \n",
    " \n",
    " \n",
    ".\n",
    " \n",
    "```"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Problem 3\n",
    "\n",
    "Write a function age_groups(ages) that calculates and prints out the number of people 30 years old and above, the number of people 20-29 years old, and the number of people under 20 years old in the list ages.\n",
    "```\n",
    "ages = [20, 21, 20, 22, 19, 18, 14, 35]\n",
    "\n",
    "\n",
    "\n",
    "\n",
    "\n",
    "\n",
    "\n",
    "\n",
    ".\n",
    "```"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Problem 4\n",
    "\n",
    "Write a function odd(num) that returns True if a number is odd and False if a number is even. Your function should take in an integer num and return a boolean.\n",
    "```\n",
    "\n",
    "\n",
    "\n",
    "\n",
    "\n",
    ".\n",
    "```"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Problem 5\n",
    "\n",
    "Write a function that calculates and returns the average of ages. You are not allowed to use python's built-in sum() function. Your function should take in the list ages as a parameter and return the average.\n",
    "```\n",
    "ages = [20, 21, 20, 22, 19, 18, 14, 35]\n",
    "\n",
    "\n",
    "\n",
    "\n",
    "\n",
    "\n",
    ".\n",
    "```"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Problem 6\n",
    "\n",
    "Given a function get_height that computes the height of the student passed in, write a new function max_height that finds the maximum height of all the people in the class. Your function should take in a list of student names and return the maximum height. You can assume height is in inches and that the list of all students in the class is class_lst. get_height(‘nicholas’) will return 75.\n",
    "\n",
    "```\n",
    "\n",
    "\n",
    "\n",
    "\n",
    "\n",
    ".\n",
    "```\n",
    "What is the type of max_height(students)?\n",
    "\n",
    "Suppose the code was modified to print(max_height) instead of return max_height, what would be\n",
    "the type of max_height(students)?\n",
    "```\n",
    "\n",
    "\n",
    "\n",
    "\n",
    "\n",
    ".\n",
    "```"
   ]
  }
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