55.跳跃游戏/Jump Game

/**
 * @param {number[]} nums
 * @return {boolean}
 */
var canJump = function(nums) {
    var arr = new Array(nums.length).fill(0);
    arr[nums.length - 1] = 1;
    
    for (var i = nums.length - 2; i >= 0; i--) {
        for (var j = 1; j <= nums[i]; j++) {
            if (arr[i + j] === 1) {
                arr[i] = 1;
                break;
            }
        }
    }
       
    if (arr[0] === 1) {
        return true;
    } else {
        return false;
    }
};