Commit 9d3c59a

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Merge pull request #406 from himaja-56/dsbranch

Added queues.py with content

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	`1`	`+class Queue:`
	`2`	`+ def __init__(self):`
	`3`	`+ self.queue = []`
	`4`	`+`
	`5`	`+ def enqueue(self, item):`
	`6`	`+ self.queue.append(item)`
	`7`	`+`
	`8`	`+ def dequeue(self):`
	`9`	`+ if not self.is_empty():`
	`10`	`+ return self.queue.pop(0)`
	`11`	`+ return "Queue is empty"`
	`12`	`+`
	`13`	`+ def is_empty(self):`
	`14`	`+ return len(self.queue) == 0`
	`15`	`+`
	`16`	`+ def peek(self):`
	`17`	`+ return self.queue[0] if not self.is_empty() else None`
	`18`	`+`
	`19`	`+ def size(self):`
	`20`	`+ return len(self.queue)`
	`21`	`+`
	`22`	`+# Example Usage`
	`23`	`+q = Queue()`
	`24`	`+q.enqueue(10)`
	`25`	`+q.enqueue(20)`
	`26`	`+print(q.dequeue()) # Output: 10`
	`27`	`+print(q.peek()) # Output: 20`

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