First Commit, 3 passing Tests

every/core.js

@@ -1,23 +1,41 @@
 // Check to see if all elements in an array
 // are even numbers.
 
-function allEven (input) {
-  return input;
-};
+function allEven(input){
+  for(let i = 0; i < input.length; i++) {
+    if(input[i] % 2 !== 0){
+      return false;
+    }
+  }
+  return true;
+}
+
 
 // Check to see if all elements in an array
 // are of the same type.
 
 function allSameType (input) {
-  return input;
+  for(let i = 1; i < input.length; i++) {
+    if(typeof input[i] !== typeof input[i-1]){
+      return false;
+    }
+  }
+  return true;
 };
 
 // Check to see if every element in the matrix is
 // an array and that every element in the array is
 // greater than 0.
 
-function positiveMatrix (input) {
-  return input;
+function positiveMatrix(input) {
+  for (let i = 0; i < input.length; i++) {
+    for (var j = 0; j < 3; j++) {
+      if (input[i][j] <= 0) {
+        return false;
+      }
+    }
+  }
+  return true;
 };
 
 // Check that all items in an array are strings