Java Collection | Set 1 (ArrayList) Part-1
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  Difficulty: Basic   Marks: 1

ArrayList are dynamic size arrays. Try this problem using ArrayList.

Given a ArrayList of n elements and a integer q defining the query number(which will be either 1 or 2) :
Query 1 includes two integers p and r. Which means add a value r at and index p in the ArrayList and print the whole updated ArrayList.
Query 2 includes one integer p. In this query print the index at which the value p is last found in the ArrayList. If the value p is not found int he ArrayList then print "-1". 

NOTE: Assume 0 based indexing

First line of input file contains an integer T, denoting the number of test cases. Then T test case follow. First line of each test case contains two integer n and q(space separated). Second Line of each test case consists of n spaced integers. Third line consists of 2 integers if the value of q is 1 otherwise consists of a single integer.

For each test case, print required  output.


5 1
1 4 5 9 3
2 6
4 2
1 9 2 4

1 4 6 5 9 3 

** For More Input/Output Examples Use 'Expected Output' option **

Contributor: S_A
Author: saksham0751

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