# Kangaroo Number Line Jumps Solution in Kotlin — HackerRank

Complete the function kangaroo in the editor below. It should return YES if they reach the same position at the same time, or NO if they don’t.

You are choreographing a circus show with various animals. For one act, you are given two kangaroos on a number line ready to jump in the positive direction (i.e, toward positive inﬁnity).

- The ﬁrst kangaroo starts at location
and moves at a rate of*x1*meters per jump.*v1* - The second kangaroo starts at location
and moves at a rate of*x2*meters per jump.*v2*

You have to ﬁgure out a way to get both kangaroos at the same location at the same time as part of the show. If it is possible, return **YES**, otherwise return **NO**.

For example, kangaroo **1 **starts at ** x1 = 2** with a jump distance

**and kangaroo 2 starts at**

*v1 = 1***with a jump distance of**

*x2 = 1***After one jump, they are both at**

*v2 = 2.***, so our answer is**

*x = 3, (x1+v1 = 2 +1, x2 + v2 = 1+2)***YES**

**Function Description**

Complete the function kangaroo in the editor below. It should return YES if they reach the same position at the same time, or NO if they don’t.

kangaroo has the following parameter(s):

- x1, v1: integers, starting position and jump distance for kangaroo 1
- x2, v2: integers, starting position and jump distance for kangaroo 2

**Input Format**

A single line of four space-separated integers denoting the respective values of x1 , v1, x2 , and v2.

**Output Format**

Print **YES **if they can land on the same location at the same time; otherwise, print **NO**.

**Note**:

The two kangaroos must land at the same location after making the same number of jumps.

**Sample Input**

`0 3 4 2`

Sample Output

`YES`

**ANSWER**

`fun kangaroo(x1: Int, v1: Int, x2: Int, v2: Int): String {`

val distance = x2-x1

val jump = v1-v2

if (v1>v2 && distance % jump == 0) {

return "YES"

} else {

return "NO"

}

}

**Explanation**

The two kangaroos jump through the following sequence of locations:

From the image, it is clear that the kangaroos meet at the same location (number 12 on the number line) after same number of jumps (4 jumps), and we print **YES**.