定义double类型时，输出用%f pow（）函数使用时是： double Math.pow(double x,double y);
实验一（2）
AC - 蝴蝶效应X - C语言实验——圆柱体计算Y - C语言实验——温度转换Z - 火车AA - 压岁钱AB - 直角坐标系AD - 数字和AE - 得分AF - 神奇的细胞AG - 学区房问题AH - 整除AI - 洗衣服AJ - 分段函数求值AK - 计算球体积AL - 优越数AM - 九九乘法表
AC - 蝴蝶效应
import java
.util
.Scanner
;
public class Main {
public static void main(String
[] args
) {
Scanner sc
=new Scanner(System
.in
);
while(sc
.hasNext())
{
int n
,a
,b
,c
,d
;
long f
[]=new long [10005];
n
=sc
.nextInt();
f
[0]=sc
.nextInt();
a
=sc
.nextInt();
b
=sc
.nextInt();
c
=sc
.nextInt();
d
=sc
.nextInt();
for(int i
=1;i
<=n
;i
++)
{
f
[i
]=(a
*f
[Math
.max(0, i
-b
)]+c
*f
[Math
.max(0, i
-d
)])%1000000007;
}
System
.out
.printf("%d\n",f
[n
]);
}
}
}
X - C语言实验——圆柱体计算
import java
.util
.Scanner
;
public class Main {
public static void main(String
[] args
) {
Scanner m
=new Scanner(System
.in
);
double pi
=3.1415926;
int x
=m
.nextInt();
int y
=m
.nextInt();
System
.out
.printf("%.2f %.2f %.2f %.2f\n",2*1.0*pi
*x
,pi
*x
*x
*1.0,2*1.0*pi
*x
*y
,pi
*x
*x
*y
);
}
}
Y - C语言实验——温度转换
import java
.util
.Scanner
;
public class Main {
public static void main(String
[] args
) {
Scanner m
=new Scanner(System
.in
);
double x
=m
.nextDouble();
double y
=5*(x
*1.0-32)/9;
System
.out
.printf("%.2f\n",y
);
}
}
Z - 火车
import java
.util
.Scanner
;
public class Main {
public static void main(String
[] args
) {
Scanner m
=new Scanner(System
.in
);
int t
=m
.nextInt();
while(t
>0)
{
t
--;
int s
=0;
int sum
=0;
int n
=m
.nextInt();
while(n
>0)
{
n
--;
int a
=m
.nextInt();
int b
=m
.nextInt();
s
=s
-a
+b
;
if(sum
<s
) sum
=s
;
}
System
.out
.printf("%d\n\n",sum
);
}
}
}
AA - 压岁钱
import java
.util
.Scanner
;
public class Main {
public static void main(String
[] args
) {
Scanner m
=new Scanner(System
.in
);
int n
=m
.nextInt();
while(n
>0)
{
n
--;
int x
=m
.nextInt();
if(1000000%x
==0) System
.out
.printf("%d\n",1000000/x
);
else System
.out
.printf("No\n");
}
}
}
AB - 直角坐标系
import java
.util
.Scanner
;
public class Main {
public static void main(String
[] args
) {
Scanner m
=new Scanner(System
.in
);
while(m
.hasNext())
{
int x
=m
.nextInt();
int y
=m
.nextInt();
if(x
>0&&y
>0) System
.out
.printf("1\n");
else if(x
<0&&y
>0) System
.out
.printf("2\n");
else if(x
<0&&y
<0) System
.out
.printf("3\n");
else System
.out
.printf("4\n");
}
}
}
AD - 数字和
import java
.util
.Scanner
;
public class Main {
public static void main(String
[] args
) {
Scanner sc
= new Scanner(System
.in
);
while (sc
.hasNext()) {
int t
= sc
.nextInt();
int s
= 0;
while (t
> 0) {
t
--;
int x
= sc
.nextInt();
if (x
% 2 != 0)
s
= s
+ x
;
}
System
.out
.printf("%d\n", s
);
}
}
}
AE - 得分
import java
.util
.Scanner
;
public class Main {
public static void main(String
[] args
) {
Scanner sc
=new Scanner (System
.in
);
while(sc
.hasNext())
{
int a
=sc
.nextInt();
int b
=sc
.nextInt();
int c
=sc
.nextInt();
System
.out
.printf("%d\n",a
*3+b
*2+c
);
}
}
}
AF - 神奇的细胞
import java
.util
.Scanner
;
public class Main {
public static void main(String
[] args
) {
Scanner sc
=new Scanner(System
.in
);
double x
=sc
.nextInt();
System
.out
.printf("%.0f\n",Math
.pow(2,x
-1));
}
}
AG - 学区房问题
import java
.util
.Scanner
;
public class Main {
public static void main(String
[] args
) {
Scanner sc
=new Scanner(System
.in
);
while(sc
.hasNext())
{
int s1
=sc
.nextInt();
int s2
=sc
.nextInt();
int t1
=sc
.nextInt();
int t2
=sc
.nextInt();
int s
=s2
*t2
-s1
*t1
;
if(s
<=0) System
.out
.printf("0\n");
else System
.out
.printf("%d\n",s
);
}
}
}
AH - 整除
最小公倍数
import java
.util
.Scanner
;
public class Main {
public static void main(String
[] args
) {
Scanner sc
=new Scanner(System
.in
);
while(sc
.hasNext())
{
int n
=sc
.nextInt();
int k
=n
/5+n
/6+n
/8-n
/5/6-n
/5/8-n
/6/4+n
/120;
System
.out
.printf("%d\n",k
);
}
}
}
AI - 洗衣服
import java
.util
.Scanner
;
public class Main {
public static void main(String
[] args
) {
Scanner sc
=new Scanner(System
.in
);
while(sc
.hasNext())
{
int l
=sc
.nextInt();
int w
=sc
.nextInt();
System
.out
.printf("%d\n",l
/w
);
}
}
}
AJ - 分段函数求值
import java
.util
.Scanner
;
public class Main {
public static void main(String
[] args
) {
Scanner sc
=new Scanner(System
.in
);
while(sc
.hasNext())
{
double y
;
double x
=sc
.nextDouble();
if(x
<0) y
=-x
;
else if(x
>0) y
=Math
.pow(x
, 2)+1;
else y
=100;
System
.out
.printf("%.1f\n",y
);
}
}
}
AK - 计算球体积
import java
.util
.Scanner
;
public class Main {
public static void main(String
[] args
) {
Scanner sc
=new Scanner(System
.in
);
while(sc
.hasNext())
{
double pi
=3.1415927;
double r
=sc
.nextDouble();
double y
=4*pi
*r
*r
*r
/3.0;
System
.out
.printf("%.3f\n",y
);
}
}
}
AL - 优越数
import java
.util
.Scanner
;
public class Main {
public static void main(String
[] args
) {
Scanner sc
=new Scanner(System
.in
);
int t
=sc
.nextInt();
while(t
>0)
{
int i
=0;
t
--;
int a
=sc
.nextInt();
int b
=sc
.nextInt();
int c
=sc
.nextInt();
int av
=(a
+b
+c
)/3;
if(a
>av
) i
++;
if(b
>av
) i
++;
if(c
>av
) i
++;
if(i
>=2) System
.out
.printf("Yes\n");
else System
.out
.printf("No\n");
}
}
}
AM - 九九乘法表
import java
.util
.Scanner
;
public class Main {
public static void main(String
[] args
) {
Scanner sc
=new Scanner(System
.in
);
while(sc
.hasNext())
{
int n
=sc
.nextInt();
for(int i
=1;i
<=n
;i
++)
{
for(int j
=1;j
<=i
;j
++)
{
if(j
==i
) System
.out
.printf("%d*%d=%d",j
,i
,i
*j
);
else System
.out
.printf("%d*%d=%d ",j
,i
,i
*j
);
}
System
.out
.println();
}
}
}
}
