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sbalasa

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Adding more deque use cases

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Original file line number	Diff line number	Diff line change
`@@ -315,6 +315,53 @@ deque([4, 3, 1, 2])`
`315`	`315`	`2`
`316`	`316`	`4`
`317`	`317`	`'''`
	`318`	`+`
	`319`	`+# To fetch last n values only`
	`320`	`+`
	`321`	`+last_5= deque(maxlen=5)`
	`322`	`+`
	`323`	`+for iinrange(1,10+1):`
	`324`	`+ last_5.append(i)`
	`325`	`+`
	`326`	`+'''`
	`327`	`+deque([6, 7, 8, 9, 10], maxlen=5)`
	`328`	`+6`
	`329`	`+7`
	`330`	`+8`
	`331`	`+9`
	`332`	`+10`
	`333`	`+'''`
	`334`	`+`
	`335`	`+# To rotate n times or -n times`
	`336`	`+`
	`337`	`+country= deque(list("America"))`
	`338`	`+`
	`339`	`+country.rotate(2)`
	`340`	`+print(country)`
	`341`	`+country.rotate(-3)`
	`342`	`+print(country)`
	`343`	`+`
	`344`	`+'''`
	`345`	`+deque(['c', 'a', 'A', 'm', 'e', 'r', 'i'])`
	`346`	`+c`
	`347`	`+a`
	`348`	`+A`
	`349`	`+m`
	`350`	`+e`
	`351`	`+r`
	`352`	`+i`
	`353`	`+`
	`354`	`+deque(['m', 'e', 'r', 'i', 'c', 'a', 'A'])`
	`355`	`+m`
	`356`	`+e`
	`357`	`+r`
	`358`	`+i`
	`359`	`+c`
	`360`	`+a`
	`361`	`+A`
	`362`	`+'''`
	`363`	`+`
	`364`	`+`
`318`	`365`	```
`319`	`366`
`320`	`367`	`##Queue`

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