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In botany, a bulb is structurally a short stem with fleshy leaves or leaf bases that function as food storage organs during dormancy. (In gardening, plants with other kinds of storage organ are also called "ornamental bulbous plants" or just &qu[LeetCode] 319. Bulb Switcher
There are n bulbs that are initially off. You first turn on all the bulbs, then you turn off every second bulb. On the third round, you toggle every third bulb (turning on if it's off or turning off if it's on). For the ith round, you toggle eve319. Bulb Switcher
问题： 给定n个初始状态为off的灯， 第1次，按 1*i 号灯的开关。 第2次，按 2*i 号灯的开关。 ... 第n次，按 n 号灯的开关。 求最后on的灯共有几个。 Example 1: Input: n = 3 Output: 1 Explanation: At first, the three bulbs are [off, off, off]. After the first round, the three10.22补题
E Nothing is eternal in the world, Kostya understood it on the 7-th of January when he saw partially dead four-color garland. Now he has a goal to replace dead light bulbs, however he doesn't know how many light bulbs for each color are required. It672. Bulb Switcher II
问题传送门 问题分析 TODOing 完整代码 class Solution { public: void function(string &str, int begin, int step){ for(int i = begin; i < str.size(); i+=step){ if(str[i] == '1') str[i] = '0';三分板子
B - Light BulbTime Limit:1000MS Memory Limit:32768KB 64bit IO Format:%lld & %lluSubmit Status Practice ZOJ 3203 Description Compared to wildleopard's wealthiness, his brother mildleopard is rather poor. His house is narrow and he has on319. Bulb Switcher
There are n bulbs that are initially off. You first turn on all the bulbs. Then, you turn off every second bulb. On the third round, you toggle every third bulb (turning on if it's off or turning off if it's on). For the i-th round, you toggle e