Given an array of non-negative integers, A, of length N, you are initially positioned at the first index of the array.Problem Constraints
Each element in the array represents your maximum jump length at that position.
Return the minimum number of jumps required to reach the last index.
If it is not possible to reach the last index, return -1.
1 <= N <= 106Input Format
0 <= A[i] <= 50000
The first and the only argument contains an integer array, A.Output Format
Return an integer, representing the answer as described in the problem statement.Example Input
A = [2, 1, 1]
A = [2, 3, 1, 1, 4]
The shortest way to reach index 2 is
Index 0 -> Index 2
that requires only 1 jump.
The shortest way to reach index 4 is
Index 0 -> Index 1 -> Index 4
that requires 2 jumps.
NOTE: You only need to implement the given function. Do not read input, instead use the arguments to the function. Do not print the output, instead return values as specified.
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