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Create 1669-merge-in-between-linked-lists.kt

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	`1`	`+classSolution {`
	`2`	`+funmergeInBetween(list1:ListNode?,a:Int,b:Int,list2:ListNode?):ListNode? {`
	`3`	`+var curr= list1`
	`4`	`+var i=0`
	`5`	`+while (i< a-1) {`
	`6`	`+ curr= curr?.next`
	`7`	`+ i++`
	`8`	`+ }`
	`9`	`+`
	`10`	`+var head= curr`
	`11`	`+while (i<= b) {`
	`12`	`+ curr= curr?.next`
	`13`	`+ i++`
	`14`	`+ }`
	`15`	`+ head?.next= list2`
	`16`	`+`
	`17`	`+var list2= list2`
	`18`	`+while (list2?.next!=null)`
	`19`	`+ list2= list2?.next`
	`20`	`+ list2?.next= curr`
	`21`	`+return list1`
	`22`	`+ }`
	`23`	`+}`

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