Dres

problems/problem1.js

@@ -2,22 +2,37 @@ var assert = require('assert');
 
 // we need 5 test cases. I provided 1 input
 let inputs = [
-  ""
+  "hello",
+  'world',
+  'welcome',
+  'to',
+  2,
 ]
 
 let outputs = [
-
+  'h',
+  'w',
+  'w',
+  't',
+  ''
 ]
 
 // Make this function return the first letter of the string that is passed to it. If the string does not have a first letter, return undefined
 function f(str) {
-
+   if (typeof str !== 'string' || str === '') {
+     return ''
+   } else {
+    return str[0];
+  }
 }
 
+
+
+
 function runTest(i) {
-    var expected = outputs[i];
-    var actual = f(inputs[i]);
-    assert.deepEqual(actual, expected);
+  var expected = outputs[i];
+  var actual = f(inputs[i]);
+  assert.deepEqual(actual, expected);
 }
 
 runTest(0);

problems/problem10.js

@@ -2,11 +2,19 @@ var assert = require('assert');
 
 // we need 5 test cases. 
 let inputs = [
-
+  'hello world',
+  'go',
+  'away',
+  'FaT',
+  'man'
 ]
 
 let outputs = [
-
+  'Hello World',
+  'Go',
+  'Away',
+  'Fat',
+  'Man'
 ]
 
 /*
@@ -17,9 +25,23 @@ f("ALL YOUR BASE ARE BELONG"); // All Your Base Are Belong
 
 */
 function f(str) {
-
+  var lower = str.toLowerCase()
+  console.log(lower)
+  var words = lower.split(' ')
+  console.log(words)
+
+
+
+  for (var i=0; i<words.length; i++) {
+    words[i] = words[i][0].toUpperCase() + words[i].slice(1);
+
+  }
+
+  return words.join(' ')
+
 }
 
+
 function runTest(i) {
     if(i > inputs.length) throw new Error("You do not have enough test cases");
     var expected = outputs[i];

problems/problem11.js

@@ -2,25 +2,52 @@ var assert = require('assert');
 
 // we need 5 test cases. 
 let inputs = [
-
+  [2, 1, 5],
+  [5, 2, 3],
+  [5, 'a', 0],
+  ['x', 7, 6],
+  [2, 9, 'a'],
+
 ]
 
 let outputs = [
-
+  8,
+  10,
+  5,
+  13,
+  11
 ]
 
 /*
 Make this function return the sum of all the numbers in the input array. If any element in the array is not a number, skip it. If the array is empty, return zero.
 */
 function f(arr) {
-
+  var notNum = []
+  var num = []
+  var total = 0;
+
+  for (var i = 0; i < arr.length; i++) {
+    if (typeof arr[i] === 'number') {
+      num.push(arr[i])
+    } else {
+      notNum.push(arr[i]);
+    }
+  }
+  console.log(num);
+
+  for (var j = 0; j < num.length; j++) {
+    total += num[j];
+    console.log(total);
+  }
+  console.log(total);
+  return total
 }
 
 function runTest(i) {
-    if(i > inputs.length) throw new Error("You do not have enough test cases");
-    var expected = outputs[i];
-    var actual = f(inputs[i]);
-    assert.deepEqual(actual, expected);
+  if (i > inputs.length) throw new Error("You do not have enough test cases");
+  var expected = outputs[i];
+  var actual = f(inputs[i]);
+  assert.deepEqual(actual, expected);
 }
 
 runTest(0);

problems/problem14.js

@@ -2,11 +2,20 @@ var assert = require('assert');
 
 // we need 5 test cases. 
 let inputs = [
-
+  'Lorem ipsumos dolor sit amet consectetur adipisicing elit. Magni quisquam',
+  'Lorem ipsumos dolor sit amet consectetur adipisicing elit. Magni quisquam',
+  'Lorem ipsumos dolor sit amet consectetur adipisicing elit. Magni quisquam',
+  'Lorem ipsumos dolor sit amet consectetur adipisicing elit. Magni quisquam',
+  'Lorem ipsumos dolor sit amet consectetur adipisicing elit. Magni quisquam',
 ]
 
 let outputs = [
-
+  'Lorem ipsumos dolor sit amet consectetur\nadipisicing elit. Magni quisquam',
+  'Lorem ipsumos dolor sit amet consectetur\nadipisicing elit. Magni quisquam',
+  'Lorem ipsumos dolor sit amet consectetur\nadipisicing elit. Magni quisquam',
+  'Lorem ipsumos dolor sit amet consectetur\nadipisicing elit. Magni quisquam',
+  'Lorem ipsumos dolor sit amet consectetur\nadipisicing elit. Magni quisquam',
+
 ]
 
 /*
@@ -32,8 +41,39 @@ Lorem ipsumos dolor sit amet consectetur
 */
 function f(str) {
 
+    let result = [];
+    let subStr = str;
+
+   // result.push(str.slice(0,40));
+    console.log(result);
+
+    while (subStr.length >= 40) {
+        result.push(subStr.slice(0,40));
+        subStr = subStr.slice(40);
+
+    };
+
+    result.push(subStr)
+
+    const final = result.map(function (str){
+      if (str[0] === ' '){
+        return str.slice(1)
+      }
+      return str;
+    })
+
+    // "let final" could be replaced by just .join at the end
+
+
+   return final.join('\n');
+
+
 }
 
+console.log(f(inputs[0]));
+
+
+f(inputs[0]);
 function runTest(i) {
     if(i > inputs.length) throw new Error("You do not have enough test cases");
     var expected = outputs[i];

problems/problem2.js

@@ -2,16 +2,30 @@ var assert = require('assert');
 
 // we need 5 test cases.
 let inputs = [
+    'hello',
+    'world',
+    'send',
+    'nudes',
+    'blag6'
 
 ]
 
 let outputs = [
-
+    'o',
+    'd',
+    'd',
+    's',
+    undefined
 ]
 
-// Make this function return the last letter of the string that is passed to it. If the string does not have a last letter, return undefined
+// Make this function return the last letter of the string that is passed to it. 
+// If the string does not have a last letter, return undefined
 function f(str) {
-
+    if (isNaN(str[str.length-1])) {
+        console.log(str[str.length-1]);
+        return str[str.length-1]
+    }
+    return undefined;
 }
 
 function runTest(i) {

problems/problem3.js

@@ -3,21 +3,45 @@ var assert = require('assert');
 // we need 7 test cases. I've provided 2.
 let inputs = [
   [2, 4],
-  [-3, 3]
+  [-3, 3],
+  [4, 9],
+  [2, 6],
+  [9, 2],
+  [1, 3],
+  [2, '']
 ]
 
 let outputs = [
   6,
-  0
+  0,
+  13,
+  8,
+  11,
+  4,
+  undefined
+
 ]
 
 /*
-Make this function return the sum of the two numbers that are passed to it. If one of the numbers is not passed, or if anything other than numbers are passed, return undefined.
+Make this function return the sum of the two numbers that are passed to it. 
+If one of the numbers is not passed, or if anything other than numbers are passed, return undefined.
 */
-function f(x, y) {
+function f(arr) {
+
+  var firstNum = arr[0];
+  var secondNum = arr[1];
 
+    if (typeof (firstNum) !== 'number' || typeof (secondNum) !== 'number'){
+      return undefined
+    }else {
+      return firstNum + secondNum;
+    };
+
+
+
 }
 
+
 function runTest(i) {
     var expected = outputs[i];
     var actual = f(inputs[i]);

problems/problem4.js

@@ -3,31 +3,50 @@ var assert = require('assert');
 // we need 8 test cases. I've provided the first 2
 let inputs = [
   ["hello", 4],
+  ['world', 3],
+  ['cheese', 5],
+  ['sausage', 2],
+  ['mushroom', 6],
+  ['onion', 3],
+  [9, 2],
   ["", 2]
 ]
 
 let outputs = [
   "o",
+  'l',
+  'e',
+  'u',
+  'o',
+  'o',
+  undefined,
   undefined
 ]
 
 /*
-Make this function return the letter at the specified position in the string. If no such letter exists, it should return undefined.
+Make this function return the letter at the specified position in the string. 
+If no such letter exists, it should return undefined.
 
 For example:
 f(["hello", 1]); // e
 f(["", 4]); // undefined
 f(["abc", 0]); // a
 
 */
-function f(arr) {
-
+function f(arr, num) {
+
+  console.log(num)
+    if (typeof (arr[arr[1]]) !== 'string') {
+      return undefined;
+    } else {
+      return arr[arr[1]];
+    };
 }
 
 function runTest(i) {
     var expected = outputs[i];
     var input = inputs[i];
-    var actual = f(input[0], input[1]);
+    var actual = f(input[[0], input[1]]);
     assert.deepEqual(actual, expected);
 }