標籤:java 限速 儲存 沒有資源取之不盡用之不竭。伺服器頻寬有限,能限制一點算一點。最近在使用雲端儲存openstack swift做檔案儲存體下載。如題先上限速code:private Long writeResponse(HttpServletResponse response,InputStream stream, Long speed, Long startTime,
標籤:轉自http://tutorials.jenkov.com/java-concurrency/volatile.htmlThe Java volatile keyword is used to mark a Java variable as "being stored in main memory". More precisely that means, that every read of a volatile variable will be read from
標籤:Given an integer n, return the number of trailing zeroes in n!.Note: Your solution should be in logarithmic time complexity.解題思路:計算n能達到的5的最大次冪,算出在這種情況下能提供的5的個數,然後減去之後遞迴即可,JAVA實現如下:static public int trailingZeroes(int n) {if(n<25)return
標籤:Given an array of size n, find the majority element. The majority element is the element that appears more than ⌊ n/2 ⌋ times.You may assume that the array is non-empty and the majority element always exist in the array.解題思路:編程之美P130
標籤:Given two integers representing the numerator and denominator of a fraction, return the fraction in string format.If the fractional part is repeating, enclose the repeating part in parentheses.For example, Given numerator = 1,
標籤:Compare two version numbers version1 and version2.If version1 > version2 return 1, if version1 < version2 return -1, otherwise return 0.You may assume that the version strings are non-empty and contain only digits and the . character.The .
標籤:題目:You are given a string, s, and a list of words, words, that are all of the same length. Find all starting indices of substring(s) in s that is a concatenation of each word in wordsexactly once and without any
標籤:Given an unsorted array, find the maximum difference between the successive elements in its sorted form.Try to solve it in linear time/space.Return 0 if the array contains less than 2 elements.You may assume all elements in the array are
標籤:Design a stack that supports push, pop, top, and retrieving the minimum element in constant time. push(x) -- Push element x onto stack. pop() -- Removes the element on top of the stack. top() -
標籤:Write a program to find the node at which the intersection of two singly linked lists begins. For example, the following two linked lists: A: a1 → a2 c1 → c2 → c3
標籤:A peak element is an element that is greater than its neighbors.Given an input array where num[i] ≠ num[i+1], find a peak element and return its index.The array may contain multiple peaks, in that case return the index to any one of the peaks