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Jump Game II

Detailed guide and Python implementation for the 'Jump Game II' problem.

Problem Statement

Easy

You are given a 0-indexed array of integers nums of length n. You are initially positioned at nums[0]. Each element nums[i] represents the maximum length of a forward jump from index i. Return the minimum number of jumps to reach nums[n - 1]. The test cases are generated such that you can reach the last index.

Write a function jump(nums: List[int]) -> int.

Constraints
  • 1 <= len(nums) <= 10^4
  • 0 <= nums[i] <= 1000

Examples

Example 1
Input
nums = [2,3,1,1,4]
Output
2
Explanation

Jump 1 step from index 0 to 1, then 3 steps to the last index.

Example 2
Input
nums = [2,3,0,1,4]
Output
2
Explanation

Jump 1 step from index 0 to 1, then 3 steps to the last index.

Need a Hint?
Consider using Greedy-specific data structures like sets or heaps.
Edge Cases to Watch
  • Empty input structures
  • Single element inputs
  • Large numerical bounds

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