LeetCode 495 提莫攻擊/teemo attacking

題目描述：

這道題本來挺簡單的，直接模擬就可以，先看別人的代碼：

class Solution {
public:
    int findPoisonedDuration(vector<int>& timeSeries, int duration) {
        if (timeSeries.empty()) return 0;
        int res = 0, n = timeSeries.size();
        for (int i = 1; i < n; ++i) {
            int diff = timeSeries[i] - timeSeries[i - 1];
            res += (diff < duration) ? diff : duration;
        }
        return res + duration;
    }
};

簡單清爽，一目瞭然，可自己做的時候犯sb了，本來一段一段加上就可以，偏要幾段合在一起，然後再考慮各種情況分類處理：

class Solution {
public:
    int findPoisonedDuration(vector<int>& timeSeries, int duration) {
        int n = timeSeries.size();
        if(n == 0) return 0;
        if(n == 1) return duration;
        int i = 1,flag = 0,ans = 0,start,answer;
        while(i < n){
            if(timeSeries[i] - timeSeries[i-1] < duration){
                if(flag == 0){
                    start = timeSeries[i - 1];
                    flag = 1;
                    i++;
                    if(i == n){
                        ans += timeSeries[n - 1] - start;
                    }
                    
                }
                else{
                    i++;
                    if(i == n){
                        ans +=timeSeries[n - 1] - start;
                    }
                }
            }
            else{
                if(flag == 1){
                    ans += timeSeries[i - 1] - start + duration;
                    flag = 0;
                    i++;
                }
                else {
                    i++;
                    ans += duration;
                }
            }
        }
        return ans + duration;
    }
};

我都不知道我寫的什麼玩意兒。。亂七八糟寫了一堆。寫到這裏就當提醒自己了，learn a lesson.