Commit eb61a2d

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adding forEach method and for...of loop

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Original file line number	Diff line number	Diff line change
`@@ -141,5 +141,23 @@ class LinkedList {`
`141`	`141`	`const node = new Node(data, previous.next);`
`142`	`142`	`previous.next = node;`
`143`	`143`	`}`
	`144`	`+`
	`145`	`+ forEach(fn) {`
	`146`	`+ let node = this.head;`
	`147`	`+ let counter = 0;`
	`148`	`+ while (node) {`
	`149`	`+ fn(node, counter);`
	`150`	`+ node = node.next;`
	`151`	`+ counter++;`
	`152`	`+ }`
	`153`	`+ }`
	`154`	`+`
	`155`	`+ *[Symbol.iterator]() {`
	`156`	`+ let node = this.head;`
	`157`	`+ while (node) {`
	`158`	`+ yield node;`
	`159`	`+ node = node.next;`
	`160`	`+ }`
	`161`	`+ }`
`144`	`162`	`}`
`145`	`163`

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