added other units

Unit 4/Day 2/index.html

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+<!doctype html>
+<html>
+<head>
+<title>Unit 4 Day 2</title>
+<link href="style.css" rel="stylesheet" type="text/css" />
+</head>
+<body>
+    <h1>Count "s" and "S" characters</h1>
+    <label for="input1">Input:</label>
+    <input type="text" id="input1"></input>
+    <button onclick="program1(document.getElementById('input1').value)">Submit</button>
+    <p>Output: <p id="out1"></p></p>
+<hr>
+    <h1>Capitalize every odd number letter and lowercase every even number letter</h1>
+    <label for="input2">Input:</label>
+    <input type="text" id="input2"></input>
+    <button onclick="program2(document.getElementById('input2').value)">Submit</button>
+    <p>Output: <p id="out2"></p></p>
+    <script src="script.js"></script>
+</body>
+</html>

Unit 4/Day 2/script.js

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+function program1(inputString){
+    document.getElementById("out1").innerHTML="";
+    let inputArray = Array.from(inputString);
+    let regex = /s/gm;
+    let counter = 0;
+    for (i = 0; i < inputArray.length; i++) {
+        if (regex.test(inputArray[i])) {
+            counter++;
+        }
+        else {
+            console.log("not an s");
+        }
+    }
+    document.getElementById("out1").innerHTML=counter;
+}
+function program2(inputString){
+    document.getElementById("out2").innerHTML="";
+    let inputArray = Array.from(inputString);
+    for (i = 0; i < inputArray.length; i++) {
+        if (i % 2 == 0) {
+            console.log("odd");
+            let outputCharacter = inputArray[i].toUpperCase();
+            let existingText = document.getElementById("out2").textContent;
+            document.getElementById("out2").innerHTML= existingText + outputCharacter;
+        }
+        else {
+            console.log("not an s");
+            let outputCharacter = inputArray[i].toLowerCase();
+            let existingText = document.getElementById("out2").textContent;
+            document.getElementById("out2").innerHTML= existingText + outputCharacter;
+        }
+    }
+
+    // document.getElementById("out1").innerHTML= localStorage;
+}