We use cookies to ensure you have the best browsing experience on our website. Please read our cookie policy for more information about how we use cookies.

Java 1D Array (Part 2)

Let's play a game on an array! You're standing at index of an -element array named . From some index (where ), you can perform one of the following moves:

  • Move Backward: If cell exists and contains a , you can walk back to cell .
  • Move Forward:
    • If cell contains a zero, you can walk to cell .
    • If cell contains a zero, you can jump to cell .
    • If you're standing in cell or the value of , you can walk or jump off the end of the array and win the game.

In other words, you can move from index to index , , or as long as the destination index is a cell containing a . If the destination index is greater than , you win the game.

Function Description

Complete the canWin function in the editor below.

canWin has the following parameters:

  • int leap: the size of the leap
  • int game[n]: the array to traverse

Returns

  • boolean: true if the game can be won, otherwise false

Input Format

The first line contains an integer, , denoting the number of queries (i.e., function calls).
The subsequent lines describe each query over two lines:

  1. The first line contains two space-separated integers describing the respective values of and .
  2. The second line contains space-separated binary integers (i.e., zeroes and ones) describing the respective values of .

Constraints

  • It is guaranteed that the value of is always .

Sample Input

STDIN Function ----- -------- 4 q = 4 (number of queries) 5 3 game[] size n = 5, leap = 3 (first query) 0 0 0 0 0 game = [0, 0, 0, 0, 0] 6 5 game[] size n = 6, leap = 5 (second query) 0 0 0 1 1 1 . . . 6 3 0 0 1 1 1 0 3 1 0 1 0

Sample Output

YES YES NO NO

Explanation

We perform the following queries:

  1. For and , we can walk and/or jump to the end of the array because every cell contains a . Because we can win, we return true.
  2. For and , we can walk to index and then jump units to the end of the array. Because we can win, we return true.
  3. For and , there is no way for us to get past the three consecutive ones. Because we cannot win, we return false.
  4. For and , there is no way for us to get past the one at index . Because we cannot win, we return false.

Tap to enable the editor. We recommend coding on the desktop for the best experience.