my TDD exercises solutions

leapYears/leapYears.js

@@ -1,5 +1,5 @@
-const leapYears = function() {
+const leapYears = function (year) {
+  return year % 4 == 0 && (year % 100 !== 0 || year % 400 == 0);
+};
 
-}
-
-module.exports = leapYears
+module.exports = leapYears;

removeFromArray/removeFromArray.js

@@ -1,5 +1,19 @@
-const removeFromArray = function() {
+const removeFromArray = function (...theArgs) {
+  let filteredArr = [],
+    arr = theArgs[0];
 
-}
+  for (let i = 0; i < arr.length; i++) {
+    //   theArgs.map((arg) => {
+    //       if (arr[i] != arg) {
+    //         filteredArr.push(arr[i]);
+    //       }
+    //   });
+    if (!theArgs.includes(arr[i])) {
+      filteredArr.push(arr[i]);
+    }
+  }
 
-module.exports = removeFromArray
+  return filteredArr;
+};
+
+module.exports = removeFromArray;

repeatString/repeatString.js

@@ -1,5 +1,13 @@
-const repeatString = function() {
+const repeatString = function (s, n) {
+  let newString = "";
+  if (n < 0) {
+    newString = "ERROR";
+  } 
 
-}
+  for (let i = 0; i < n; i++) {
+    newString = newString + s;
+  }
+  return newString;
+};
 
-module.exports = repeatString
+module.exports = repeatString;

reverseString/reverseString.js

@@ -1,5 +1,10 @@
-const reverseString = function() {
+const reverseString = function (s) {
+  s = s.split("");
+  let newWord = [];
+  for (let i = s.length - 1; i >= 0; i--) {
+    newWord.push(s[i]);
+  }
+  return newWord.join("");
+};
 
-}
-
-module.exports = reverseString
+module.exports = reverseString;

sumAll/sumAll.js

@@ -1,5 +1,14 @@
-const sumAll = function() {
+const sumAll = function (a, b) {
+  let max = a > b ? a : b,
+    min = a < b ? a : b;
 
-}
+  let sum = 0;
+  for (let i = min; i <= max; i++) {
+    sum += i;
+  }
+  return a < 0 || b < 0 || typeof a !== "number" || typeof b !== "number"
+    ? "ERROR"
+    : sum;
+};
 
-module.exports = sumAll
+module.exports = sumAll;

tempConversion/tempConversion.js

@@ -1,12 +1,12 @@
-const ftoc = function() {
+const ftoc = function (temp) {
+  return Math.round((((temp - 32) * 5) / 9) * 10) / 10;
+};
 
-}
-
-const ctof = function() {
-
-}
+const ctof = function (temp) {
+  return Math.round(((temp * 9) / 5 + 32) * 10) / 10;
+};
 
 module.exports = {
   ftoc,
-  ctof
-}
+  ctof,
+};