jumpgame.py

class Solution:
    def canJump(self, nums: List[int]) -> bool:
        if len(nums)==1:
            return True
        
        minjump=1
        idx=len(nums)-2
        while idx >= 0:
            if nums[idx]>=minjump:
                minjump=1
            else:
                minjump+=1
            idx-=1

        if minjump > 1:
            return False
            
        return True