leetcode 54: Jump Game

class Solution {
public:
bool canJump(vector<int>& nums) {
if(nums.size()==1)
return true;
if(nums[0]==0)
return false;
int max=-1;
for(int i=0;i<nums.size();i++)
{
if(nums[i]==0)
{
if(max==i&&i!=nums.size()-1)
return false;
continue;
}
if(nums[i]+i>max)
max=nums[i]+i;
}
return true;
}
};