Looking for good programming challenges?

Use the search below to find our solutions for selected questions!

Jump Game

Problem Statement
Given an array of non-negative integers nums, you are initially positioned at the first index of the array. Each element in the array represents your maximum jump length at that position. Determine if you are able to reach the last index.

Example 1

Input: nums = [2,3,1,1,4]
Output: true

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

Example 2

Input: nums = [3,2,1,0,4]
Output: false

Explanation: You will always arrive at index 3 no matter what. Its maximum jump length is 0, which makes it impossible to reach the last index.


class Solution:
    def canJump(self, nums: List[int]) -> bool:
        target = len(nums) - 1
        for i in range(len(nums)-1, -1, -1):
            if i + nums[i] >= target:
                target = i
        if target == 0:
            return True
        return False