Completed palindrome

08_calculator/calculator.js

@@ -6,26 +6,9 @@ const subtract = function(a,b) {
   return a-b;
 };
 
-const sum = (nums)=>{
-  let total=0;
-	for(let i in nums){
-    total += nums[i];
-  }
-  return total;
-};
+const sum = (nums)=> nums.reduce((total, num)=> total+= num);
 
-const multiply = (...args) => {
-  let total=1;
-  let i=0;
-  for(let i in args){
-    // console.log("i: "+i+" args[i]: "+args[i]);
-    total *= args[i];
-    i++;
-  }
-  console.log(total);
-  return total;
-
-};
+const multiply = (...args) => args.reduce((total,arg)=> total *= arg);
 
 const power = (a,b)=> {
 	let total=1;

09_palindromes/palindromes.js

@@ -1,6 +1,53 @@
-const palindromes = function () {
+// Problem: Write a function that determines whether or not a given string is a palindrome.
+// Framework
+// 	1. Understand the problem
+// 		○ Given: string
+// 		○ Output: True/False
+// 		○ Examples:
+// 			§ Racecar
+// 			§ A car, a man, a maraca.
+// 		○ Assumptions:
+// 			§ Ignore punctuations
+// 			§ Ignore capitalization
+// 	2. Strategize: Visually 
+//
+// 	3. Strategize: Written
+// 		○ Create array A for given string
+// 		○ Sanitize array
+// 			§ Remove punctuation, spacing, capitalization
+// 		○ Create a copy of array A reversed
+// 		○ Store it in Array B
+// 		○ Compare Array A & B
 
+
+
+const palindromes = function (input){
+    let startString =input.toLowerCase().replace(/[ ,.!?;:'"()\-_]/g,'').split("");
+    const endString = startString.map(x=>x); //If did = startString, endString REFERENCES start string, we dont want that so use map
+    console.log(startString);
+    endString.reverse();
+    console.log(startString);
+    console.log(endString);
+    return startString.toString() === endString.toString();
 };
 
+palindromes('ZZZZ car, a man, a maracaz.')
+// palindrome("racecar");
+// palindrome("Racecar");
+// palindrome("A car, a man, a maraca.");
+
+
+
+
+
+
+
+
+
+
+
+
+
+
 // Do not edit below this line
 module.exports = palindromes;

09_palindromes/palindromes.spec.js

@@ -4,25 +4,25 @@ describe('palindromes', () => {
   test('works with single words', () => {
     expect(palindromes('racecar')).toBe(true);
   });
-  test.skip('works with punctuation ', () => {
+  test('works with punctuation ', () => {
     expect(palindromes('racecar!')).toBe(true);
   });
-  test.skip('works with upper-case letters ', () => {
+  test('works with upper-case letters ', () => {
     expect(palindromes('Racecar!')).toBe(true);
   });
-  test.skip('works with multiple words', () => {
+  test('works with multiple words', () => {
     expect(palindromes('A car, a man, a maraca.')).toBe(true);
   });
-  test.skip('works with multiple words', () => {
+  test('works with multiple words', () => {
     expect(palindromes('Animal loots foliated detail of stool lamina.')).toBe(true);
   });
-  test.skip('doesn\'t just always return true', () => {
+  test('doesn\'t just always return true', () => {
     expect(palindromes('ZZZZ car, a man, a maracaz.')).toBe(false);
   });
-  test.skip('works with numbers in a string', () => {
+  test('works with numbers in a string', () => {
     expect(palindromes('rac3e3car')).toBe(true);
   });
-  test.skip('works with unevenly spaced numbers in a string', () => {
+  test('works with unevenly spaced numbers in a string', () => {
     expect(palindromes('r3ace3car')).toBe(false);
   });
 });

10_fibonacci/fibonacci.js

@@ -1,6 +1,14 @@
-const fibonacci = function() {
-
-};
+const fibonacci = function(n) {
+    //1, 1, 2, 3, 5, 8
+    //n1 n2 n3 n4 n5
+    //n4 = n3+n2
+    //n3 = n2+n1
+    //n2 = n1
+    if(n<=1){
+        return n;
+    }
+    return fibonacci(n-1)+fibonacci(n-2);
+    };
 
 // Do not edit below this line
 module.exports = fibonacci;

10_fibonacci/fibonacci.spec.js

@@ -4,13 +4,13 @@ describe('fibonacci', () => {
   test('4th fibonacci number is 3', () => {
     expect(fibonacci(4)).toBe(3);
   });
-  test.skip('6th fibonacci number is 8', () => {
+  test('6th fibonacci number is 8', () => {
     expect(fibonacci(6)).toBe(8);
   });
-  test.skip('10th fibonacci number is 55', () => {
+  test('10th fibonacci number is 55', () => {
     expect(fibonacci(10)).toBe(55);
   });
-  test.skip('15th fibonacci number is 610', () => {
+  test('15th fibonacci number is 610', () => {
     expect(fibonacci(15)).toBe(610);
   });
   test.skip('25th fibonacci number is 75025', () => {