adding size method

mamenesia · mamenesia · commit fc4a3aac4d74 · 2019-05-15T22:01:04.000+07:00
diff --git a/linkedList/linkedList.js b/linkedList/linkedList.js
@@ -15,7 +15,17 @@ class LinkedList {
   }
 
   insertFirst(data) {
-    this.head =new Node(data, this.head);
+    this.head = new Node(data, this.head);
+  }
+
+  size() {
+    let counter = 0;
+    let node = this.head;
+    while(node) {
+      counter++;
+      node = node.next;
+    }
+    return counter;
   }
 }
 

Original file line number	Diff line number	Diff line change
`@@ -15,7 +15,17 @@ class LinkedList {`
`15`	`15`	`}`
`16`	`16`
`17`	`17`	`insertFirst(data) {`
`18`		`- this.head =new Node(data, this.head);`
	`18`	`+ this.head = new Node(data, this.head);`
	`19`	`+ }`
	`20`	`+`
	`21`	`+ size() {`
	`22`	`+ let counter = 0;`
	`23`	`+ let node = this.head;`
	`24`	`+ while(node) {`
	`25`	`+ counter++;`
	`26`	`+ node = node.next;`
	`27`	`+ }`
	`28`	`+ return counter;`
`19`	`29`	`}`
`20`	`30`	`}`
`21`	`31`