Completed Sprint-3/4-strecth

Author: shafiekwalker7861

Sprint-3/4-stretch/card-validator.md

@@ -4,8 +4,8 @@ In this project you'll write a script that validates whether or not a credit car
 
 Here are the rules for a valid number:
 
-- Number must be 16 digits, all of them must be numbers.
-- You must have at least two different digits represented (all of the digits cannot be the same).
+- Number must be 16 digits, all of them must be numbers. checked
+- You must have at least two different digits represented (all of the digits cannot be the same). 
 - The final digit must be even.
 - The sum of all the digits must be greater than 16.
 
@@ -33,3 +33,5 @@ These are the requirements your project needs to fulfill:
 - Return a boolean from the function to indicate whether the credit card number is valid.
 
 Good luck!
+
+function 

Sprint-3/4-stretch/credit-card-validator.js

@@ -0,0 +1,39 @@
+function isValidCreditCard(cardNumber) {
+    // Rule 1: Must be exactly 16 characters long
+    if (cardNumber.length !== 16) {
+        return false;
+    }
+
+    // Rule 2: Must contain only digits
+    if (!cardNumber.match(/^\d{16}$/)) {
+        return false;
+    }
+
+    // Rule 3: Cannot be made up of only one repeated digit
+    if (cardNumber.match(/^(.)\1+$/)) {
+        return false;
+    }
+
+    // Rule 4: Final digit must be even
+    const lastDigit = Number(cardNumber[cardNumber.length - 1]);
+
+    if (lastDigit % 2 !== 0) {
+        return false;
+    }
+
+    // Rule 5: Sum of all digits must be greater than 16
+    let sum = 0;
+
+    for (const digit of cardNumber) {
+        sum += Number(digit);
+    }
+
+    if (sum <= 16) {
+        return false;
+    }
+
+    // Passed every rule
+    return true;
+}
+
+module.exports = isValidCreditCard;

Sprint-3/4-stretch/find.js

@@ -21,5 +21,8 @@ console.log(find("code your future", "z"));
 
 // a) How the index variable updates during the call to find
 // b) What is the if statement used to check
+// the if statement checks characters in the string
 // c) Why is index++ being used?
+// index++ is used to move to the next character in the string for the next iteration of the loop
 // d) What is the condition index < str.length used for?
+// index < str.length keeps the index within the string's valid range. If no match is found by the end, the function returns -1.

Sprint-3/4-stretch/password-validator.js

@@ -1,6 +1,22 @@
 function passwordValidator(password) {
-    return password.length < 5 ? false : true
+    if (password.length < 5) {
+        return false;
+    } else if (!/[A-Z]/.test(password)) {
+        return false;
+    } else if (!/[a-z]/.test(password)) {
+        return false;
+    } else if (!/[0-9]/.test(password)) {
+        return false;
+    } else if (!/[!#$%.*&]/.test(password)) {
+        return false;
+    } else {
+        return true;
+    }   
+    
+
 }
 
 
-module.exports = passwordValidator;
+module.exports = passwordValidator;
+
+// ("!", "#", "$", "%", ".", "*", "&")

Sprint-3/4-stretch/password-validator.test.js

@@ -17,10 +17,16 @@ You must breakdown this problem in order to solve it. Find one test case first a
 const isValidPassword = require("./password-validator");
 test("password has at least 5 characters", () => {
     // Arrange
-    const password = "12345";
+    const password = "2A4a#";
     // Act
     const result = isValidPassword(password);
     // Assert
     expect(result).toEqual(true);
 }
-);
+);
+
+test("password must have an uppercase letter", () => {
+  const password = "2a4a#";
+  const result = isValidPassword(password);
+  expect(result).toEqual(false);
+});