如果是power of two, 则2进制表达中,有且仅有一个1. 可以通过移位来数1的个数, 这里用了一个巧妙的办法, 即判断 N & (N-1) 是否为0. [CODE] 来源:http://blog.csdn.net/xudli/article/details/46784163 publicclassSolution{publicbooleanIsPowerOfTwo(intn){returnn >0&& ((n & (n -1)) ==...
Leetcode算法系列| 8. 字符串转换整数 (atoi) 组成2.题解 C# 解法一:及其臃肿的代码 官方题解提到的那种 “及其臃肿的代码”的方法,虽然说臃肿,但实际代码量比起官方解法还是要少一些,而且在很多实际工作中的应用场景下,还是避免不了 像这样 大量使用...空间复杂度:O(1) 仅用了几个变量, 与n的大小无关...
给定2 个字符串 s 和 t,问 s 是不是 t 的子序列。注意 s 在 t 中还需要保持 s 的字母的顺序。 这是一题贪心算法。直接做即可。 代码# Go package leetcode // 解法一 O(n^2) func isSubsequence(s string, t string) bool { index := 0 for i := 0; i < len(s); i++ { flag :=...
Oct 2, 2024 1508-Range-Sum-of-Sorted-Subarray-Sums.java [1508] [Time Beats: 18.92%] [Memory Beats: 15.31%] - LeetPush Aug 5, 2024 1509-Minimum-Difference-Between-Largest-and-Smallest-Value-in-Three-Moves.java [1509] [Time Beats: 96.06%] [Memory Beats: 76.12%] - LeetPush Jul 3, ...
342 Power of Four 39% Easy 343 Integer Break 46% Medium 344 Reverse String 60% Easy 345 Reverse Vowels of a String 39% Easy 347 Top K Frequent Elements 49% Medium 349 Intersection of Two Arrays 48% Easy 350 Intersection of Two Arrays II 44% Easy 352 Data Stream as Disjoin...
}else{returnIsPowerOfThree(n /3); } } 最后还有一种巧妙的方法,利用对数的换底公式来做,高中学过的换底公式为logab = logcb / logca,那么如果n是3的倍数,则log3n一定是整数,我们利用换底公式可以写为log3n = log10n / log103,注意这里一定要用10为底数,不能用自然数或者2为底数,否则当n=243时会...
我本科毕业于Universityof Massachusetts-Amherst. 专业是Communication, Minor CS. 我现在就读于Cornell University的Information Science专业。康村的IS有四个方向,data science; interactive technologies; networks, crowds, markets 和HCI。我当然是HCI track里的学生啦!因为IS是computer information science学院里的专业,...
Ultimately, the job of engineering leaders is not to code—it is, instead, to remove obstacles so their teams are able to spend more time working on valuable solutions and so their work output has the reach, impact, and visibility it deserves. So it would be easy enough to designate code...
leetcode 697[easy]---Degree of an Array 难度:easy Given a non-empty array of non-negative integers nums, the degree of this array is defined as the maximum frequency of any one of its elements. Your task is to find the smallest......
In cases where rule violations significantly affect the ratings of other participants, we may take drastic measures. Remember, with great power comes great responsibility. In this case,zh0ukangyangwas at the top of the ratings, occupying high places in the rounds. ...