LeetCode/55_jump_game.cpp at main · Jecia888/LeetCode · GitHub

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#include <vector>
#include <iterator>
#include <algorithm>


class Solution {
public:

    bool canJump(std::vector<int>& nums) {
        int gas = 0;
        for(int i = 0; i < nums.size(); i++) {
            if (gas < 0){
                return false;
            } else if (nums.at(i) > gas){
                gas = nums.at(i);
            }
            gas -= 1;
        }
        return true;
    }

/* recursion over time
    bool canJump(vector<int>& nums) {

        return canJump(nums, 0);

    }

    bool canJump(vector<int>& nums, int curIndex) {
        if(curIndex == nums.size() - 1) {
            return true;
        }
        if(nums.at(curIndex) == 0 || curIndex > nums.size() - 1) {
            return false;
        }
        for(int i = 1; i <= nums.at(curIndex); i++) {
            if(canJump(nums, curIndex+i)){
                return true;
            }
        }
        return false;
    }*/
};