495.Teemo-Attacking.js

// Our hero Teemo is attacking an enemy Ashe with poison attacks! When Teemo attacks Ashe, Ashe gets poisoned for a exactly duration seconds. More formally, an attack at second t will mean Ashe is poisoned during the inclusive time interval [t, t + duration - 1]. If Teemo attacks again before the poison effect ends, the timer for it is reset, and the poison effect will end duration seconds after the new attack.
// You are given a non-decreasing integer array timeSeries, where timeSeries[i] denotes that Teemo attacks Ashe at second timeSeries[i], and an integer duration.
// Return the total number of seconds that Ashe is poisoned.

/**
 * @param {number[]} timeSeries
 * @param {number} duration
 * @return {number}
 */
var findPoisonedDuration = function(timeSeries, duration) {
    let res = 0;
    for (let i = 0; i < timeSeries.length; i++) {
        res++;
        if (timeSeries[i + 1] <= timeSeries[i] + duration - 1) {
            res += (timeSeries[i + 1] - timeSeries[i] - 1);
            continue;
        } else {
            res += duration - 1;
        }
    }
    return res;
};