蓝桥杯 练习系统 算法训练答案Java

《蓝桥杯 练习系统 算法训练答案Java》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、ALGO-9importjava.io.*;publicclassMain{publicstaticvoidmain(Stringargs[])throwsIOException{BufferedReaderbf=newBufferedReader(newInputStreamReader(System.in));intn=Integer.parseInt(bf.readLine());System.out.println((int)(Math.pow(2,n)-n-1)*2);}}10importjava.io.*;importjava.util.Arr

2、ays;importjava.util.HashSet;importjava.util.Iterator;importjava.util.Set;publicclassMain{publicstaticvoidmain(String[]args)throwsIOException{BufferedReaderbr=newBufferedReader(newInputStreamReader(System.in));intn=Integer.parseInt(br.readLine());int[]arr=newint[n];Stringst[]=br.re

3、adLine().split("");for(inta=0;a

4、;}publicstaticvoidfunc(int[]arr,int[]tag){intx;for(inta=0;a=0){System.out.print(arr[a]+"");}}System.out.println();Setset=newHashSet();for(inta=0;a

5、){set.add(tag[a]);}int[]sor=newint[set.size()];Iteratorit=set.iterator();while(it.hasNext()){for(inta=0;a

6、=Arrays.binarySearch(tag,arr[a]);if(y<0){System.out.print(arr[a]+"");}}System.out.println();}}11importjava.util.Scanner;publicclassMain{publicstaticvoidmain(String[]args){Scannerinput=newScanner(System.in);intn=input.nextInt();if(1<=n&&n<=10){if(n==1){System.out.println("1");}else

7、{int[]tag=newint[n];tag[0]=1;tag[1]=2;if(n==1){System.out.println(tag[0]);}for(inta=2;a

8、n{BufferedReaderbr=newBufferedRea