added randomize()

src/pages/home/home.html

@@ -9,6 +9,7 @@
 <ion-content>
     <button ion-button color="secondary" (click)='reset();'>Reset</button>
     <button ion-button color="secondary" (click)='next();'>Next >></button>
+    <button ion-button color="secondary" (click)='randomize();'> Random! </button>
   <ion-slides #slides *ngIf="cardSupply && cardSupply.length" (ionSlideDidChange)="slideChanged()" (ionSlideNextEnd)="nextSlide()" (ionSlidePrevEnd)="prevSlide()"
     [initialSlide]="0">
 		<ion-slide *ngFor="let current of cardSupply">

src/pages/home/home.ts

@@ -45,4 +45,11 @@ export class HomePage {
     let idx = this.slides.getActiveIndex() + 1;
     this.slides.slideTo(idx, 500);
   }
+
+  randomize() {
+    this.cardSupply = this.prov.randomCards();
+
+    this.navCtrl.setRoot(this.navCtrl.getActive().component);
+
+  }
 }

src/providers/flash-cards/flash-cards.ts

@@ -40,6 +40,27 @@ export class FlashCardsProvider {
   allCards() {
     return this.defaultCards
   }
+  shuffle(array) {
+    var currentIndex = array.length, temporaryValue, randomIndex;
+  
+    // While there remain elements to shuffle...
+    while (0 !== currentIndex) {
+  
+      // Pick a remaining element...
+      randomIndex = Math.floor(Math.random() * currentIndex);
+      currentIndex -= 1;
+  
+      // And swap it with the current element.
+      temporaryValue = array[currentIndex];
+      array[currentIndex] = array[randomIndex];
+      array[randomIndex] = temporaryValue;
+    }
+  
+    return array;
+  }
+  randomCards() {
+    return this.shuffle(this.defaultCards)
+  }
 
   testCards =
     [