Algorithmic/index.html at main · Yuliya-beCode/Algorithmic · GitHub

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  <!DOCTYPE html>
  <html lang="en">

  <head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
  </head>

  <body>

    <h1>Variables</h1>

    <h2>I - calculate</h2>

    <p>In this example, x, y, and z are variables.</p>

    <p id="demo"></p>

    <script>
      var x = 5;
      var y = 6;
      var z = x + y;
      document.getElementById("demo").innerHTML =
        "The value of z is: " + z;
    </script>

    <p id="demo"></p>

    <p id="division"></p>


    <script>
      var p = 10;
      var i = 2;
      var q = p / i;
      document.getElementById("division").innerHTML =
        "The value of q is: " + q;
    </script>

    <h2>II - concatenate sentence</h2>


    <p>The result of adding "Julia" + " " + "Julia":</p>

    <p id="concatenate"></p>

    <script>
      var x = "Julia" + " " + "Julia";
      document.getElementById("concatenate").innerHTML = x;
    </script>


    <h2>III - VAT</h2>

    <p id="vat"></p>


    <h4>VAT Calculator</h4><br> Amount($): <input type="text" id="amount" name="txt_amount">
    <br><br>
    <button onclick="calculateVAT(amount.value)">Calculate Total Amount</button>

    <script>
      function calculateVAT(x) {
        if (x.length == 0) {
          alert("Numbers cannot be blank");
          return;
        }

        if (isNaN(x)) {
          alert("Value entered is not numeric");
          return;
        }

        var result = parseInt(x) * 0.21;
        alert("Multiplication: " + result);
      }
    </script>


    <h1>Conditions</h1>


    Conditions


    <h4>II - maximum</h4>

    <script>
      var array = [267, 306, 108];
      var largest = Math.max.apply(Math, array); // 306
    </script>

    <h4>IV - day’s number</h4>

    <p id="days"></p>

    <script>
      var day;
      switch (new Date().getDay()) {
        case 0:
          day = "Sunday";
          break;
        case 1:
          day = "Monday";
          break;
        case 2:
          day = "Tuesday";
          break;
        case 3:
          day = "Wednesday";
          break;
        case 4:
          day = "Thursday";
          break;
        case 5:
          day = "Friday";
          break;
        case 6:
          day = "Saturday";
      }
      document.getElementById("days").innerHTML = "Today is " + day;
    </script>


    <h1>Loops</h1>

    <script>
      for I = 1 until n do {
          output($I)
        }

        // Let's drink coffee
      integer nbr_coffee = n
      boolean has_coffee = true
      while ($has_coffee == true)
        do {
          drink_coffee()
          $nbr_coffee = $nbr_coffee - 1
          if ($nbr_coffee == 0) then {
            $has_coffee = false
          }
        }
    </script>

    <p id="loop2"></p>

    <script>
      var text = ""
      var i = 0;

      do {
        text += "<br>The number is " + i;
        i++;
      }
      while (i < 10);

      document.getElementById("loop2").innerHTML = text;
    </script>


    <h1>Arrays</h1>

    <h2>I print an array</h2>

    <p id="array"></p>

    <script>
      var cats = ["Saab", "Miau", "Lucy"];
      document.getElementById("array").innerHTML = cats;
    </script>

    <h2>II - maximum</h2>

    <p>Write an algorithm which receives an array of integers and prints its maximum.</p>

    <p id="max"></p>

    <script>
      document.getElementById("max").innerHTML =
        Math.max(0, 150, 30, 20, 500, -200);
    </script>

    <h2>III - minimum</h2>

    <p>Write an algorithm which receives an array of integers and prints its minimum.</p>

    <p id="min"></p>

    <script>
      document.getElementById("min").innerHTML =
        Math.min(0, 150, 30, 20, 500, -200);
    </script>

    <h2>IV - minimum position</h2>

    <p>Write an algorithm which receives an array of integers and prints the position of its minimum.
    </p>


    <p>The lowest number is <span id="position"></span>.</p>

    <script>
      var points = [40, 100, 1, 5, 25, 10];
      points.sort(function (a, b) {
        return a - b
      });
      document.getElementById("position").innerHTML = points[0];
    </script>


    <h1>Functions</h1>

    <h1>Trial by pseudo code</h1>

    <h2>I - list of random numbers</h2>

    <p>Write a function which returns an array of n random numbers, n being the only received parameter.</p>

      function randomArray(n) { <br>
        let array = [] <br>
        for (let i = 0; i < n; i++) { <br>
          array.push(Math.floor(Math.random() * Math.floor(1000))) <br>
        } <br>
        return array <br>
      } <br>


    <h2>II - translate</h2>

    <p>
      The main goal of pseudo code is to write down the logic behind an algorithm, so that you can easily translate it
      into human speech or code.
      Given the algorithm below

      - with your word explain its purpose

      - translate it into Python and Javascript

      function in_array(element,list_elements) { <br>
      boolean exist = false <br>
      for I = 0 until length($list_elements) do { <br>
      if $element == $list_elements[I] then { <br>
      $exist = true <br>
      } <br>
      } <br>
      return $exist <br>
      } <br>

    </p>

    <br>

    <p>This function has two arguments: element and list_elements. The boolean exist is defined as false. The function
      will look for the "element" in the array till this will be found.
      Once the element is found, we are receiving the answer "true". Is element is not found, the function returns
      "false".
    </p>

    <p>Variant 1</p>


    function inArray(element, list_elements) { <br>
    let exist = false <br>
    list_elements.array.forEach(element => { <br>
    if (item == element) exist = true <br>
    }) <br>
    console.log(exist); <br>

    } <br>


    <p>Variant 2</p>


      function inArray(element, list_elements) {<br>

          let exist = false <br>

            for (let i = 0; i < list_elements.length; i++) { <br>
              return exist <br>
            }<br>


    <p>III - sort an array</p>

    <h2>JavaScript Array Sort</h2>

    <p>Click the button to sort the array in ascending order.</p>

    <button onclick="myFunction()">Try it</button>

    <p id="sort"></p>

    <script>
      var points = [40, 100, 1, 5, 25, 10, 11, 22, 56, 89];
      document.getElementById("sort").innerHTML = points;

      function myFunction() {
        points.sort(function (a, b) {
          return a - b
        });
        document.getElementById("sort").innerHTML = points;
      }
    </script>


    <script src="script.js"></script>
  </body>

  </html>