challenge.js

////////////////////////////////////
// READ THE INSTRUCTIONS BELOW BEFORE STARTING!
////////////////////////////////////
/*
 * Before you start, add this javascript file in a script tag in index.html.
 *
 * The loops are wrapped in functions for testing purposes. Please do not modify the names of the functions.
 *
 * Test your output in the browser by commenting in and out the function call (aka invocation), e.g., "prompt1()"
 *
 */

/*
 * Prompt 1:
 *
 * Create a loop that counts from 0 to 10, printing each number (including 0 and 10).
 */

// The first one has been done for you as an example!
function prompt1() {
  for (let i = 0; i <= 10; i++) {
    console.log(i);
  }
}
console.log(prompt1());

// COMMENT IN THE BELOW LINE OF CODE TO TEST YOUR OUTPUT IN THE BROWSER!

// 🌟 MAKE A COMMIT: "Complete prompt 1"

/*
 * Prompt 2:
 *
 * Create a loop that prints every even number BETWEEN 0 and 100 (not including 0 or 100).
 */

function prompt2() {
  // YOUR CODE HERE
  for(let i = 0; i < 100; i++){
    if(i % 2 === 0){
      console.log(i);
    }
  }
}
prompt2();

// COMMENT IN THE BELOW LINE OF CODE TO TEST YOUR OUTPUT IN THE BROWSER!

// 🌟 MAKE A COMMIT: "Complete prompt 2"

/*
 * Prompt 3:
 *
 * Create a loop that counts from -5 to 5, printing each number (including -5 and 5).
 */

function prompt3() {
  for(i = -5; i <= 5; i++){
    console.log(i);
  }
  // YOUR CODE HERE
}

// COMMENT IN THE BELOW LINE OF CODE TO TEST YOUR OUTPUT IN THE BROWSER!
prompt3();

// 🌟 MAKE A COMMIT: "Complete prompt 3"

/*
 * Prompt 4:
 *
 * Create a loop that counts down from 10 to 0, printing each number (including 10 and 0).
 */

function prompt4() {
  // YOUR CODE HERE
  for(i = 10; i >= 0; i--){
    console.log(i);
  }
}

// COMMENT IN THE BELOW LINE OF CODE TO TEST YOUR OUTPUT IN THE BROWSER!
prompt4();

// 🌟 MAKE A COMMIT: "Complete prompt 4"

/*
 * Prompt 5:
 *
 * Create a loop that counts down from 5 to -5, printing each number (including 5 and -5).
 */
function prompt5() {
  // YOUR CODE HERE
  for(i = 5; i >= -5; i--){
    console.log(i);
  }
}

// COMMENT IN THE BELOW LINE OF CODE TO TEST YOUR OUTPUT IN THE BROWSER!
prompt5()

// 🌟 MAKE A COMMIT: "Complete prompt 5"

/*
 * Prompt 6:
 *
 * Create a loop that counts from 0 to 50 (inclusive) in multiples of 2 (instead of 1),
 * printing each number.
 */

function prompt6() {
  // YOUR CODE HERE
  for(i = 0; i <= 50; i+=2){
    console.log(i);
  }
}

// COMMENT IN THE BELOW LINE OF CODE TO TEST YOUR OUTPUT IN THE BROWSER!
prompt6()

// 🌟 MAKE A COMMIT: "Complete prompt 6"

/*
 * Prompt 7:
 *
 * For the numbers 0 - 100 (inclusive), print out "I found a [ number ]. High five!" if the
 * number is a multiple of five.
 *
 * Sample Output IN THE BROWSER:
 *   - I found a 5. High five!
 *   - I found a 10. High five!
 */
function prompt7() {
  // YOUR CODE HERE
  for(i = 0; i <= 100; i++){
    if(i % 5 == 0 && i > 1){
    console.log(`I found a ${i}! High Five Baby!`);
    }
  }
}

// COMMENT IN THE BELOW LINE OF CODE TO TEST YOUR OUTPUT IN THE BROWSER!
prompt7()

// 🌟 MAKE A COMMIT: "Complete prompt 7"

/*
 * Prompt 8:
 *
 * Create a variable called someNumber and assign it a random number between
 * 0 and 100 (not inclusive). Hint: Use Math.random so that it generates a new number every time the code is run!
 *
 * Create a conditional that matches these requirements:
 *   - if someNumber is less than 30, print "That's a small number!"
 *   - if someNumber is between 30 and 60, print "The number is medium sized."
 *   - if someNumber is greater than 60, print "We got a big one!"
 */

//  define someNumber here


function prompt8() {
  let someNumber = (Math.floor(Math.random() * 100));
  
  // YOUR CODE HERE
  if(someNumber < 30){
    console.log("That's a small number you got there...");
  }else if(someNumber < 60 && someNumber > 30){
    console.log("The number is average");
  }else{
    console.log("This is really big!");
  }
  console.log(someNumber);
  // print someNumber to the console in your function so you can see its value
}

// COMMENT IN THE BELOW LINE OF CODE TO TEST YOUR OUTPUT IN THE BROWSER!
for( let i = 0; i < 5; i++){
  prompt8();
}
// 🌟 MAKE A COMMIT: "Complete prompt 8"

/*
 * Prompt 9:
 *
 * Iterate over the starWars array printing each character's name and index
 *
 * i.e.:
 *  0. Han
 *  1. C3PO
 *  2. R2D2
 */

const starWars = ["Han", "C3PO", "R2D2", "Luke", "Leia", "Anakin"];

function prompt9() {
  // YOUR CODE HERE
  for(let i = 0; i < starWars.length; i++){
    console.log(`Number ${i + 1}: ${starWars[i]}`);
  }
}

// COMMENT IN THE BELOW LINE OF CODE TO TEST YOUR OUTPUT IN THE BROWSER!
prompt9();

// 🌟 MAKE A COMMIT: "Complete prompt 9"

/*
 * Prompt 10:
 *
 * Write a loop that pushes every even number between 0 and 100 into an array,
 * then print the array.
 */
function prompt10() {
  const myArray = [];
  // YOUR CODE HERE
    for(i = 2; i < 100; i += 2){
        myArray.push(i);
      }
      return myArray;
    }

  // don't forget to return the array after pushing the numbers into it so you can see it in the browser!
  // return the array
  console.log(prompt10());



// COMMENT IN THE BELOW LINE OF CODE TO TEST YOUR OUTPUT IN THE BROWSER!
// console.log(prompt10());

// 🌟 MAKE A COMMIT: "Complete prompt 10"

/*
 * Prompt 11:
 *
 * Find the median number in the following nums array (the mid point), then
 * console.log that number. The median number is the middle number in a SORTED list of numbers. Think through the steps you'll need to take to determine this number with code!
 *
 * Hint: What does Math.floor() do?
 */

  // 
  // console.log(nums);
 

  // if(nums.length % 2 === 0){ //array is even, average of middle 2 numbers
  //   //find middle
  //   let medianEven = Math.floor(nums.length/2)
  //   //find median 
  //   median = (nums)


  // }else{
  //   //select the middle number
  //   let medianOdd = math.floor((nums.length / 2)); //Gives you the index
  //   medianOdd = nums[medianOdd];

  // }

let nums = [
  14,
  11,
  16,
  15,
  13,
  16,
  15,
  17,
  19,
  11,
  12,
  14,
  19,
  11,
  15,
  17,
  11,
  18,
  12,
  17,
  12,
  71,
  18,
  15,
  12,
];

function prompt11() {
    nums.sort((a,b) => a - b); // Sort the array
    let median; // Declare the median variable
  // YOUR CODE HERE
  if(nums.length % 2 === 0) {//if it's even
    median = (nums[nums.length / 2 - 1] + (nums[nums.length / 2]) / 2) ;

  } else { //it's odd 9 items / 2 would be 4.5, we would round down to 4
    median = nums[Math.floor(nums.length/2)];

  }
  console.log(median); //Used chat GPT for assistence, need some help understanding what this is doing exactly outside of the nums.length % 2 === 0
}

prompt11();
// COMMENT IN THE BELOW LINE OF CODE TO TEST YOUR OUTPUT IN THE BROWSER!

// CHATGPT explanation of why math.floor() is used
// const nums = [1, 2, 3, 4, 5];

// nums.sort((a, b) => a - b);

// let median;
// if (nums.length % 2 === 0) {
//   median = (nums[nums.length / 2 - 1] + nums[nums.length / 2]) / 2;
// } else {
//   median = nums[Math.floor(nums.length / 2)];
// }

// console.log(median); // Output: 3
// In this example, the nums array has a length of 5, which is odd. So, in the else block, Math.floor(nums.length / 2) calculates 2.5, which is rounded down to 2. This gives us the index of the middle element in the array, which is nums[2], or 3. Since this is an odd-length array, 3 is the median, and it is logged to the console.


//For EVEN length.
// const nums = [1, 2, 3, 4, 5, 6];

// nums.sort((a, b) => a - b);

// let median;
// if (nums.length % 2 === 0) {
//   median = (nums[nums.length / 2 - 1] + nums[nums.length / 2]) / 2;
// } else {
//   median = nums[Math.floor(nums.length / 2)];
// }

// console.log(median); // Output: 3.5
// In this example, the if block would be executed because nums.length % 2 would equal 0. In the if block, median would be calculated as the average of the two middle elements, which are 3 and 4. The median would be (3 + 4) / 2 = 3.5, and it would be logged to the console.


// 🌟 MAKE A COMMIT: "Complete prompt 11"

/*
 * Prompt 12:
 *
 * Did you know that you can nest loops? The catch is that you have to use
 * different incrementers (normally i) in the inner vs. outer loops. You'll commonly see developers use
 * another 1-letter incrementer (j, k, l, etc).
 *
 * Create an "outer" loop that counts up from 1 to 10 with an incrementer of i.
 * Create an "inner" loop that counts from 11 to 20 with an incrementer of j.
 * Inside the inner loop, print `i: ${i} / j: ${j}`
 * You might need to consult Google to see examples of nested for loops!
 */

function prompt12() {
  for(i = 1; i <= 10; i++){
    for(j=11; j <= 20; j++){
      console.log(`i: ${i} / j: ${j}`);
    }
  }
  // YOUR CODE HERE
}

// COMMENT IN THE BELOW LINE OF CODE TO TEST YOUR OUTPUT IN THE BROWSER!
console.log(prompt12());

// 🌟 MAKE A COMMIT: "Complete prompt 12"

/*
 * Prompt 13:
 *
 * Using nested loops, print all the values inside the nested arrays.
 */

let nestedArrays = [
  ["a", "b", "c"],
  ["d", "e", "f"],
  ["g", "h", "i"],
];

function prompt13() {
  // YOUR CODE HERE
  for(i=0;i<nestedArrays.length; i++) {
    for(j=0; j<nestedArrays[i].length; i++){
      console.log(nestedArrays[i][j]);
    }
  }
} 

// COMMENT IN THE BELOW LINE OF CODE TO TEST YOUR OUTPUT IN THE BROWSER!
prompt13();

// 🌟 MAKE A COMMIT: "Complete prompt 13"

///////////////////////////////////////////
// DO NOT MODIFY CODE BENEATH THIS LINE :)
///////////////////////////////////////////
if (!this.window) {
  module.exports = {
    prompt1,
    prompt2,
    prompt3,
    prompt4,
    prompt5,
    prompt6,
    prompt7,
    // someNumber,
    prompt8,
    prompt9,
    prompt10,
    prompt11,
    prompt12,
    prompt13,
  };
}