浙大java练习题答案.docx

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浙大java练习题答案.docx

浙大java练习题答案

40001

importjava.util.Scanner;

publicclassTest40001{

publicstaticvoidmain(String[]args){

intri,repeat;

inti,n;

floatsum;

Scannerin=newScanner(System.in);

repeat=in.nextInt();

for(ri=1;ri<=repeat;ri++){

n=in.nextInt();

/*--------------------*/

System.out.println((int)(sum*1000+0.5)/1000.);

}

}

}

40002

importjava.util.Scanner;

publicclassTest40002{

publicstaticvoidmain(String[]args){

intri,repeat;

inti,n;

doublefact;

Scannerin=newScanner(System.in);

repeat=in.nextInt();

for(ri=1;ri<=repeat;ri++){

n=in.nextInt();

/*--------------------*/

System.out.println(fact);

}

}

}

40003

importjava.util.Scanner;

publicclassTest40003{

publicstaticvoidmain(String[]args){

intri,repeat;

inti,n;

doublex,mypow;

Scannerin=newScanner(System.in);

repeat=in.nextInt();

for(ri=1;ri<=repeat;ri++){

x=in.nextDouble();

n=in.nextInt();

/*--------------------*/

System.out.println(mypow);

}

}

}

40004

importjava.util.Scanner;

publicclassTest40004{

publicstaticvoidmain(String[]args){

intri,repeat;

inti,n,flag;

floatsum;

Scannerin=newScanner(System.in);

repeat=in.nextInt();

for(ri=1;ri<=repeat;ri++){

n=in.nextInt();

/*--------------------*/

System.out.println((long)(sum*10000+0.5)/10000.);

}

}

}

40005

importjava.util.Scanner;

publicclassTest40005{

publicstaticvoidmain(String[]args){

intri,repeat;

inti,n,temp;

floatsum;

Scannerin=newScanner(System.in);

repeat=in.nextInt();

for(ri=1;ri<=repeat;ri++){

n=in.nextInt();

/*--------------------*/

sum=0;

for(i=1;i<=n;i++){

sum=(float)(sum+1.0/(2*i-1));

}

System.out.println(sum);

}

}

}

40006

importjava.util.Scanner;

publicclassTest40006{

publicstaticvoidmain(String[]args){

intri,repeat;

inttemp,flag;

doubleeps,item,sum;

Scannerin=newScanner(System.in);

repeat=in.nextInt();

for(ri=1;ri<=repeat;ri++){

eps=in.nextDouble();

/*--------------------*/

System.out.println((int)(sum*10000+0.5)/10000.);

}

}

}

40007

importjava.util.Scanner;

publicclassTest40007{

publicstaticvoidmain(String[]args){

intri,repeat;

intbegin,c,end,f;

Scannerin=newScanner(System.in);

repeat=in.nextInt();

for(ri=1;ri<=repeat;ri++){

begin=in.nextInt();

end=in.nextInt();

System.out.println("CelsiusFahrenheit");

/*--------------------*/

System.out.println(c+""+f);

}

}

}

}

40008

importjava.util.Scanner;

publicclassTest40008{

publicstaticvoidmain(String[]args){

intri,repeat;

intx,sum;

Scannerin=newScanner(System.in);

repeat=in.nextInt();

for(ri=1;ri<=repeat;ri++){

x=in.nextInt();

/*--------------------*/

}

System.out.println(sum);

}

}

}

40009

importjava.util.Scanner;

publicclassTest40009{

publicstaticvoidmain(String[]args){

intri,repeat;

inti,max,n,x;

Scannerin=newScanner(System.in);

repeat=in.nextInt();

for(ri=1;ri<=repeat;ri++){

n=in.nextInt();

/*--------------------*/

}

System.out.println(max);

}

}

}

40010

importjava.util.Scanner;

publicclassTest40010{

publicstaticvoidmain(String[]args){

intri,repeat;

intnumber,sum,n,r;

Scannerin=newScanner(System.in);

repeat=in.nextInt();

for(ri=1;ri<=repeat;ri++){

n=in.nextInt();

/*--------------------*/

System.out.println("number="+number+",sum="+sum);

}

}

}

40011

importjava.util.Scanner;

publicclassTest40011{

publicstaticvoidmain(String[]args){

intri,repeat;

inti,n;

floata,b,s,t;

Scannerin=newScanner(System.in);

repeat=in.nextInt();

for(ri=1;ri<=repeat;ri++){

n=in.nextInt();

/*--------------------*/

System.out.println((int)(s*10000+.5)/10000.);

}

}

}

40012

importjava.util.Scanner;

publicclassTest40012{

publicstaticvoidmain(Stringargs[]){

intri,repeat;

inti,n,a,sn,tn;

Scannerin=newScanner(System.in);

repeat=in.nextInt();

for(ri=1;ri<=repeat;ri++){

a=in.nextInt();

n=in.nextInt();

/*--------------------*/

System.out.println(sn);

}

}

}

40013

importjava.util.Scanner;

publicclassTest40013{

publicstaticvoidmain(Stringargs[]){

intri,repeat;

inti,m,n;

booleanflag=true;

Scannerin=newScanner(System.in);

repeat=in.nextInt();

for(ri=1;ri<=repeat;ri++){

m=in.nextInt();

/*--------------------*/

}

if(flag)System.out.println("YES");

elseSystem.out.println("NO");

}

}

}

40014

importjava.util.*;

publicclassTest40014{

publicstaticvoidmain(String[]args){

Scannerin=newScanner(System.in);

intgcd,lcm,m,n,r;

intrepeat,ri;

repeat=in.nextInt();

for(ri=1;ri<=repeat;ri++){

m=in.nextInt();

n=in.nextInt();

if(m<=0||n<=0)

System.out.println("m<=0orn<=0");

else{

/*---------*/

System.out.println("theleastcommonmultiple:

"+lcm+",thegreatestcommondivisor:

"+gcd);

}

}

}

}

40021

importjava.util.Scanner;

publicclassTest40021{

publicstaticvoidmain(Stringargs[]){

intri,repeat;

inti,n;

floats,t;

Scannerin=newScanner(System.in);

repeat=in.nextInt();

for(ri=1;ri<=repeat;ri++){

n=in.nextInt();

/*--------------------*/

System.out.println((int)(s*10000+0.5)/10000.);

}

}

}

40022

importjava.util.Scanner;

publicclassTest40022{

publicstaticvoidmain(Stringargs[]){

intri,repeat;

inti,digit,m,n,number,sum;

Scannerin=newScanner(System.in);

repeat=in.nextInt();

for(ri=1;ri<=repeat;ri++){

m=in.nextInt();

n=in.nextInt();

/*------------------*/

}

}

}

40023

importjava.util.Scanner;

publicclassTest40023{

publicstaticvoidmain(Stringargs[]){

intri,repeat;

intcount,i,j,k,m,n,sum;

Scannerin=newScanner(System.in);

repeat=in.nextInt();

for(ri=1;ri<=repeat;ri++){

m=in.nextInt();

n=in.nextInt();

/*---------------------*/

System.out.println("count="+count+",sum="+sum);

}

}

}

40031

importjava.util.Scanner;

publicclassTest40031{

publicstaticvoidmain(String[]args){

intri,repeat,count,word,i;

Stringline;

charc;

Scannerin=newScanner(System.in);

repeat=(in.nextLine()).charAt(0)-'0';//输入repeat

for(ri=1;ri<=repeat;ri++){

line=in.nextLine();//输入一行字符

/*---------*/

System.out.println(count);

}

}

}

40032

importjava.util.Scanner;

publicclassTest40032{

publicstaticvoidmain(String[]args){

intri,repeat;

intdigit;

longn,temp,pow;

Scannerin=newScanner(System.in);

repeat=in.nextInt();

for(ri=1;ri<=repeat;ri++){

n=in.nextLong();

/*---------*/

System.out.println();

}

}

}

40033

importjava.util.Scanner;

publicclassTest40033{

publicstaticvoidmain(Stringargs[]){

intri,repeat;

intop1,op2,res;

charoperator;

Scannerin=newScanner(System.in);

repeat=in.nextInt();

for(ri=1;ri<=repeat;ri++){

op1=in.nextInt();

operator=(in.next()).charAt(0);

/*---------*/

System.out.println(res);

}

}

}

40034

importjava.util.Scanner;

publicclassTest40034{

publicstaticvoidmain(String[]args){

intyear,m,n,repeat,ri;

Scannerin=newScanner(System.in);

repeat=in.nextInt();

for(ri=1;ri<=repeat;ri++){

m=in.nextInt();

n=in.nextInt();

/*---------*/

}

}

}

40035

importjava.util.Scanner;

publicclassTest40035{

publicstaticvoidmain(String[]args){

intm,n,repeat,ri;

Scannerin=newScanner(System.in);

repeat=in.nextInt();

for(ri=1;ri<=repeat;ri++){

n=in.nextInt();

m=in.nextInt();

/*---------*/

}

}

}

40036

importjava.util.Scanner;

publicclassTest40036{

publicstaticvoidmain(String[]args){

intdays,repeat,ri;

Scannerin=newScanner(System.in);

repeat=in.nextInt();

for(ri=1;ri<=repeat;ri++){

}

}

}

40037

importjava.util.Scanner;

publicclassTest40037{

publicstaticvoidmain(String[]args){

inta,n,ri,count,number;

doublesum,ave;

Scannerin=newScanner(System.in);

n=in.nextInt();

for(ri=1;ri<=n;ri++){

/。

/

System.out.println("average="+Math.round(ave*100)/100.);

System.out.println("count="+count);

}

}

}

50001

importjava.util.Scanner;

publicclassTest50001{

publicstaticvoidmain(String[]args){

intri,repeat;

inti,n;

doubles;

Scannerin=newScanner(System.in);

repeat=in.nextInt();

for(ri=1;ri<=repeat;ri++){

n=in.nextInt();

/*-----------*/

System.out.println((long)(s*10000+0.5)/10000.);

}

}

/*---------------*/

}

50002

importjava.util.Scanner;

publicclassTest50002{

publicstaticvoidmain(Stringargs[]){

intri,repeat;

inti,n,a;

longsn;

Scannerin=newScanner(System.in);

repeat=in.nextInt();

for(ri=1;ri<=repeat;ri++){

a=in.nextInt();

n=in.nextInt();

/*------------*/

System.out.println(sn);

}

}

/*------------*/

}

50003

importjava.util.Scanner;

publicclassTest50003{

publicstaticvoidmain(Stringargs[]){

intri,repeat;

intcount;

longn;

Scannerin=newScanner(System.in);

repeat=in.nextInt();

for(ri=1;ri<=repeat;ri++){

n=in.nextInt();

/*---------*/

}

}

/*------------*/

}

50004

importjava.util.Scanner;

publicclassTest50004{

publicstaticvoidmain(Stringargs[]){

intri,repeat,n;

booleanflag;

Scannerin=newScanner(System.in);

repeat=in.nextInt();

for(ri=1;ri<=repeat;ri++){

n=in.nextInt();

/*---------*/

if(flag)System.out.println("YES");

elseSystem.out.println("NO");

}

}

/*------------*/

}

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