valtestArr=arrayOf("abc","bcd","def","efg")//withIndex()for((index,value)intestArr.withIndex()){println("索引为${index}值为${value}")} 数组的常用方法 Kotlin为数组提供的方法大致相当于Java的Arrays工具类提供的操作数组的方法 all(predicate:(T)->Boolean):使用Lambda表达式要求所有数组元素都满...
Also look at java.util.Arrays#copyOf methods if you are on Java 6. I would suggest the next code for Java 6: public static boolean[][] deepCopy(boolean[][] original) { if (original == null) { return null; } final boolean[][] result = new boolean[original.length][]; for (i...
second_data = sum of current-1 element in input array + sum of current-3 element in minimum array import random def get_min(numbers): #disregard the first and last element numbers = numbers[1:len(numbers)-1] #for remembering the past results DP = [0]*len(numbers) #for ke...
CREATE TABLE test (a Map(String,String)) ENGINE = Memory; INSERT INTO test VALUES ({'abc':'abc','def':'def'}), ({'hij':'hij','klm':'klm'}); SELECT mapExtractKeyLike(a, 'a%') FROM test; ┌─mapExtractKeyLike(a, 'a%')─┐ │ {'abc':'abc'} │ │ {} │ └───...
def __init(self, l, w): self.l = l self.w = w # 可以用命名元组来替代: import collections Square = collections.namedtuple('Square', 'l w') nt = Square(10, 20) 使用命名元组的优点是:可以像实例那样来访问属性,如:nt.l、nt.w;也可以对nt像普通元组那样使用for语句和解包语句。
Scala中一般使用ArrayBuffer描述变长数组。类似于Java中的ArrayList。 ArrayBuffer提供了运算符重载函数方便操作,并且可以与Array相互转换。 objectArrayBufferTest{defmain(args:Array[String]):Unit={valarrBuf=ArrayBuffer("a","b","c")//+=方法,可以添加一个或多个元素arrBuf+="d"println(arrBuf)//(a, b, ...
new ChannelInitializer[SocketChannel] { val httpTimeout = Config.getInt("http.timeout", 110) override def initChannel(ch: SocketChannel) { val p = ch.pipeline p.addLast("timeout", new IdleStateHandler(0, httpTimeout, 0) { override def channelIdle(ctx: ChannelHandlerContext, evt: IdleState...
(0,len(nums),1):max_value=max(nums[i],max_value)max_values[i]=max_valuefori,maxv,minvinzip(range(len(nums)),max_values,min_values):ifmaxv<=minv:returni+1classSolution:defpartitionDisjoint(self,nums:List[int])->int:max_value=nums[0]min_value=nums[0]pt=1cur=0foriinnums:# ...
1#"""2# ThisisMountainArray's API interface.3# You should not implement it, or speculate about its implementation4#"""5#classMountainArray:6# defget(self, index:int) ->int:7# def length(self) ->int:89classSolution:10def findInMountainArray(self, target:int, mo:'MountainArray') ->...
import java.io.*; public class ByteArrayStreamTest { public static void main(String [] args) { String str = "abcdef"; ByteArrayInputStream in = new ByteArrayInputStream(str.getBytes()); ByteArrayInputStream out = new ByteArrayOutputStream(); ...