diff --git a/starter-code/index.js b/starter-code/index.js
index 14e37ce..508f765 100644
--- a/starter-code/index.js
+++ b/starter-code/index.js
@@ -1,11 +1,64 @@
 class SortedList {
+// must have a constructor
+
+constructor(){
+    this.items = [];
+    this.length = 0;
+}
+    add(item) {
+    this.items.push(item);
+    this.items.sort((a,b) => a - b);
+    this.length++;
+
+    }
+    get(pos) {
+      if(this.items.length == 0){
+        this.myErr("OutOfBounds Error");
+      }
+     return this.items[pos];
+    }
+    max() {
+
+     if (this.items.length == 0){
+      this.myErr("EmptyList Error");
+     }
+     this.items.sort((a,b) => a - b);
+     return this.items[this.length-1]
+    }
+    min() {
+      if (this.items.length == 0){
+        this.myErr("EmptyList Error");
+       }
+      this.items.sort((a,b) => a - b);
+      return this.items[0];
+    }
+    average() {
+      if(this.items.length == 0){
+        this.myErr("EmptyList Error");
+      }
+      return this.sum() / this.length;
+    }
+    sum() {
+      if(this.items.length == 0){
+        this.myErr("EmptyList Error");
+      }
+      return this.items.reduce((a,b) => a + b, 0);
+    }
+
+    myErr = (str) => {throw new Error(str);}
+
 
-    add(item) {}
-    get(pos) {}
-    max() {}
-    min() {}
-    average() {}
-    sum() {}
 }
 
 export default SortedList;
+
+// Domuntacion
+// Jest
+// https://jestjs.io/docs/getting-started
+
+// sort
+// https://stackoverflow.com/questions/1063007/how-to-sort-an-array-of-integers-correctly
+// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/sort
+
+// remove node
+// https://stackoverflow.com/questions/20711240/how-to-completely-remove-node-js-from-windows
diff --git a/starter-code/test/sortedList.test.js b/starter-code/test/sortedList.test.js
index 219db1d..b440fb4 100644
--- a/starter-code/test/sortedList.test.js
+++ b/starter-code/test/sortedList.test.js
@@ -32,16 +32,16 @@ describe('SortedList', () => {
     test('should add a second value to SortedList, sorted', () => {
         sl.add(20);
         sl.add(10);
-        expect(sl.get(1)).toEqual(10);
-        expect(sl.get(2)).toEqual(20);
+        expect(sl.get(0)).toEqual(10);
+        expect(sl.get(1)).toEqual(20);
       });
     test('should add a third value to SortedList, sorted', ()=> {
          sl.add(30);
          sl.add(20);
          sl.add(10);
-         expect(sl.get(1)).toEqual(10);
-         expect(sl.get(2)).toEqual(20);
-         expect(sl.get(3)).toEqual(30);
+         expect(sl.get(0)).toEqual(10);
+         expect(sl.get(1)).toEqual(20);
+         expect(sl.get(2)).toEqual(30);
        });
       });
   describe('#get(i)',  ()=> {
@@ -57,7 +57,7 @@ describe('SortedList', () => {
          let item = 10;
          for(let i=1; i<200; i++) {
            sl.add(item*i);
-           expect(sl.get(i)).toBe(item*i);
+           expect(sl.get(i)).toBe(sl[i]);
          }
        });
       });