Arnold.Wells.ATX.Advanced

src/services/array-functions.js

@@ -1,29 +1,47 @@
 
 //in the function map, create a new array and store in a variable
-//loop theArray and call the fnc for each thing in the array, 
+//loop theArray and call the fnc for each thing in the array,
 //     passing in the item from the current loop into the call to fnc
 //add the returned value from fnc to the new array
 //return the new array
 export function map(theArray, fnc){
-
+  let myArray = [];
+  for(let i = 0;i < theArray.length;i ++ ){
+    let aThing = fnc(theArray[i]);
+    myArray.push(aThing);
+  }
+  return myArray;
 }
 
 //create a new array
-//loop theArray and call the fnc for each thing in the array, 
+//loop theArray and call the fnc for each thing in the array,
 //     passing in the item from the current loop
 //fnc will return true or false, if true add the item to the new array else do not
 //return the new array
 export function filter(theArray, fnc){
-
+  let myArray = [];
+  for(let i = 0;i < theArray.length;i ++ ){
+    if (fnc(theArray[i])){
+      myArray.push(theArray[i]);
+  };
+};
+  return newArray;
 }
 
 
-//loop theArray and call the fnc for each thing in the array, 
+//loop theArray and call the fnc for each thing in the array,
 //     passing in the item from the current loop
-//fnc will return true or false, if true return the item 
+//fnc will return true or false, if true return the item
 //return null
 export function find(theArray, fnc){
-
+  let myArray= [];
+  	for (let i = 0; i < theArray.length; i++){
+  		if(fnc(theArray[i])){
+  		  myArray.push(theArray[i]);
+  };
+};
+  return myArray
+  }
 }
 
 
@@ -65,4 +83,4 @@ export function tail(theArray){
 //if false return theArray
 export function sort(theArray){
 
-}
+}