- Write a program to Stack Implementation Linked List?
<script>
var root;
class StackNode {
constructor(data) {
this.data = data;
this.next = null;
}
}
function isEmpty() {
if (root == null) {
return true;
} else
return false;
}
function push(data) {
var newNode = new StackNode(data);
if (root == null) {
root = newNode;
} else {
var temp = root;
root = newNode;
newNode.next = temp;
}
document.write(data +" pushed to stack<br/>");
}
function pop() {
var popped = Number.MIN_VALUE;
if (root == null) {
document.write("Stack is Empty");
} else {
popped = root.data;
root = root.next;
}
return popped;
}
function peek() {
if (root == null) {
document.write("Stack is empty");
return Number.MIN_VALUE;
} else {
return root.data;
}
}
push(10);
push(20);
push(30);
document.write(pop() + " popped from stack<br/>");
document.write("Top element is "+ peek());
</script>
