編寫一個java應用程序。用戶從鍵盤輸入一個1-9999之間的數，程序將判斷這個數是幾位數，并判斷這個數是否回文數。回文數是指將數含有的數字逆序排列后得到的數和原數相同，例如12121,4224,6778776等都是回文數。
1）程序具有判斷用戶的輸入是否為合法整數的功能。對非法輸入（例如含有字母）要進行處理。
2）要判斷輸入數的位數，并輸出相關信息。
3）要判斷是否回文數。
二、二戰期間，英國情報人員獲取德軍的一機密電報，電報的內容為：
bzdz izu sxgzd vs lh ,vpzg woflsh vs vwrh vhlsddlmp glm wrw gzy vsg .gflyz gstfzu bvsg gzsd hdmlp vml lm ,hghzvy wmz hwiry mvvdgvy izd z hzd vivsg ,ltz tmlo tmlO
情報人員已經知道，這段電報的加密方式為：
1. 首先將字符串的順序顛倒。
2. 字母互換的規律為：A->Z, B-Y, C-X...X->C, Y->B, Z-A a->z, b->y, c-x...x->c, y->b, z->a.
3. 非字母字符保持不變。
請編程幫助情報人員破譯這份機密電報。給出注釋良好的源程序和程序運行后的結果。
標簽：
java
9999
編寫
應用程序
上傳時間：
2017-06-02
上傳用戶：dengzb84
實驗源代碼
//Warshall.cpp #include<stdio.h> void warshall(int k,int n) { int i , j, t; int temp[20][20]; for(int a=0;a<k;a++) { printf("請輸入矩陣第%d 行元素:",a); for(int b=0;b<n;b++) { scanf ("%d",&temp[a][b]); } } for(i=0;i<k;i++){ for( j=0;j<k;j++){ if(temp[ j][i]==1) { for(t=0;t<n;t++) { temp[ j][t]=temp[i][t]||temp[ j][t]; } } } } printf("可傳遞閉包關系矩陣是:\n"); for(i=0;i<k;i++) { for( j=0;j<n;j++) { printf("%d", temp[i][ j]); } printf("\n"); } } void main() { printf("利用 Warshall 算法求二元關系的可傳遞閉包\n"); void warshall(int,int); int k , n; printf("請輸入矩陣的行數 i: "); scanf("%d",&k);
四川大學實驗報告 printf("請輸入矩陣的列數 j: "); scanf("%d",&n); warshall(k,n); }
標簽：
warshall
離散
實驗
上傳時間：
2016-06-27
上傳用戶：梁雪文以
/****************temic*********t5557***********************************/
#include <at892051.h>
#include <string.h>
#include <intrins.h>
#include <stdio.h>
#define uchar unsigned char
#define uint unsigned int
#define ulong unsigned long
//STC12C2051AD的SFR定義
sfr WDT_CONTR = 0xe1;//stc2051的看門狗??????
/**********全局常量************/
//寫卡的命令
#define write_command0 0//寫密碼
#define write_command1 1//寫配置字
#define write_command2 2//密碼寫數據
#define write_command3 3//喚醒
#define write_command4 4//停止命令
#define TRUE 1
#define FALSE 0
#define OK 0
#define ERROR 255
//讀卡的時間參數us
#define ts_min 250//270*11.0592/12=249//取近似的整數
#define ts_max 304//330*11.0592/12=304
#define t1_min 73//90*11.0592/12=83:-10調整
#define t1_max 156//180*11.0592/12=166
#define t2_min 184//210*11.0592/12=194
#define t2_max 267//300*11.0592/12=276
//***********不采用中斷處理:采用查詢的方法讀卡時關所有中斷****************/
sbit p_U2270B_Standby = P3^5;//p_U2270B_Standby PIN=13
sbit p_U2270B_CFE = P3^3;//p_U2270B_CFE PIN=6
sbit p_U2270B_OutPut = P3^7;//p_U2270B_OutPut PIN=2
sbit wtd_sck = P1^7;//SPI總線
sbit wtd_si = P1^3;
sbit wtd_so = P1^2;
sbit iic_data = P1^2;//lcd IIC
sbit iic_clk = P1^7;
sbit led_light = P1^6;//測試綠燈
sbit led_light1 = P1^5;//測試紅燈
sbit led_light_ok = P1^1;//讀卡成功標志
sbit fengmingqi = P1^5;
/***********全局變量************************************/
uchar data Nkey_a[4] = {0xA0, 0xA1, 0xA2, 0xA3};//初始密碼
//uchar idata card_snr[4]; //配置字
uchar data bankdata[28] = {1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7}; //存儲卡上用戶數據(1-7)7*4=28
uchar data cominceptbuff[6] = {1,2,3,4,5,6};//串口接收數組ram
uchar command; //第一個命令
uchar command1;//
//uint temp;
uchar j,i;
uchar myaddr = 8;
//uchar ywqz_count,time_count; //ywqz jishu:
uchar bdata DATA;
sbit BIT0 = DATA^0;
sbit BIT1 = DATA^1;
sbit BIT2 = DATA^2;
sbit BIT3 = DATA^3;
sbit BIT4 = DATA^4;
sbit BIT5 = DATA^5;
sbit BIT6 = DATA^6;
sbit BIT7 = DATA^7;
uchar bdata DATA1;
sbit BIT10 = DATA1^0;
sbit BIT11 = DATA1^1;
sbit BIT12 = DATA1^2;
sbit BIT13 = DATA1^3;
sbit BIT14 = DATA1^4;
sbit BIT15 = DATA1^5;
sbit BIT16 = DATA1^6;
sbit BIT17 = DATA1^7;
bit i_CurrentLevel;//i_CurrentLevel BIT 00H(Saves current level of OutPut pin of U2270B)
bit timer1_end;
bit read_ok = 0;
//緩存定時值,因用同一個定時器
union HLint
{
uint W;
struct
{
uchar H;uchar L;
}
B;
};//union HLint idata a
union HLint data a;
//緩存定時值,因用同一個定時器
union HLint0
{
uint W;
struct
{
uchar H;
uchar L;
}
B;
};//union HLint idata a
union HLint0 data b;
/**********************函數原型*****************/
//讀寫操作
void f_readcard(void);//全部讀出1~7 AOR喚醒
void f_writecard(uchar x);//根據命令寫不同的內容和操作
void f_clearpassword(void);//清除密碼
void f_changepassword(void);//修改密碼
//功能子函數
void write_password(uchar data *data p);//寫初始密碼或數據
void write_block(uchar x,uchar data *data p);//不能用通用指針
void write_bit(bit x);//寫位
/*子函數區*****************************************************/
void delay_2(uint x) //延時,時間x*10us@12mhz,最小20us@12mhz
{
x--;
x--;
while(x)
{
_nop_();
_nop_();
x--;
}
_nop_();//WDT_CONTR=0X3C;不能頻繁的復位
_nop_();
}
/////////////////////////////////////////////////////////////////////
void initial(void)
{
SCON = 0x50; //串口方式1,允許接收
//SCON =0x50;
//01010000B:10位異步收發,波特率可變,SM2=0不用接收到有效停止位才RI=1,
//REN=1允許接收
TMOD = 0x21; //定時器1 定時方式2(8位),定時器0 定時方式1(16位)
TCON = 0x40; //設定時器1 允許開始計時(IT1=1)
TH1 = 0xfD; //FB 18.432MHz 9600 波特率
TL1 = 0xfD; //fd 11.0592 9600
IE = 0X90; //EA=ES=1
TR1 = 1; //啟動定時器
WDT_CONTR = 0x3c;//使能看門狗
p_U2270B_Standby = 0;//單電源
PCON = 0x00;
IP = 0x10;//uart you xian XXXPS PT1 PX1 PT0 PX0
led_light1 = 1;
led_light = 0;
p_U2270B_OutPut = 1;
}
/************************************************/
void f_readcard()//讀卡
{
EA = 0;//全關,防止影響跳變的定時器計時
WDT_CONTR = 0X3C;//喂狗
p_U2270B_CFE = 1;//
delay_2(232); //>2.5ms
/*
// aor 用喚醒功能來防碰撞
p_U2270B_CFE = 0;
delay_2(18);//start gap>150us
write_bit(1);//10=操作碼讀0頁
write_bit(0);
write_password(&bankdata[24]);//密碼block7
p_U2270B_CFE =1 ;//
delay_2(516);//編程及確認時間5.6ms
*/
WDT_CONTR = 0X3C;//喂狗
led_light = 0;
b.W = 0;
while(!(read_ok == 1))
{
//while(p_U2270B_OutPut);//等一個穩定的低電平?超時判斷?
while(!p_U2270B_OutPut);//等待上升沿的到來同步信號檢測1
TR0 = 1;
//deng xia jiang
while(p_U2270B_OutPut);//等待下降沿
TR0 = 0;
a.B.H = TH0;
a.B.L = TL0;
TH0 = TL0 = 0;
TR0 = 1;//定時器晚啟動10個周期
//同步頭
if((324 < a.W) && (a.W < 353)) ;//檢測同步信號1
else
{
TR0 = 0;
TH0 = TL0 = 0;
goto read_error;
}
//等待上升沿
while(!p_U2270B_OutPut);
TR0 = 0;
a.B.H = TH0;
a.B.L = TL0;
TH0 = TL0 = 0;
TR0 = 1;//b.N1<<=8;
if(a.B.L < 195);//0.5p
else
{
TR0 = 0;
TH0 = TL0 = 0;
goto read_error;
}
//讀0~7塊的數據
for(j = 0;j < 28;j++)
{
//uchar i;
for(i = 0;i < 16;i++)//8個位
{
//等待下降沿的到來
while(p_U2270B_OutPut);
TR0 = 0;
a.B.H = TH0;
a.B.L = TL0;
TH0 = TL0 = 0;
TR0 = 1;
if(t2_max < a.W/*)&&(a.W < t2_max)*/)//1P
{
b.W >>= 2;//先左移再賦值
b.B.L += 0xc0;
i++;
}
else if(t1_min < a.B.L/*)&&(a.B.L < t1_max)*/)//0.5p
{
b.W >>= 1;
b.B.L += 0x80;
}
else
{
TR0 = 0;
TH0 = TL0 = 0;
goto read_error;
}
i++;
while(!p_U2270B_OutPut);//上升
TR0 = 0;
a.B.H = TH0;
a.B.L = TL0;
TH0 = TL0 = 0;
TR0 = 1;
if(t2_min < a.W/*)&&(a.W < t2_max)*/)//1P
{
b.W >>= 2;
i++;
}
else if(t1_min < a.B.L/*a.W)&&(a.B.L < t1_max)*/)//0.5P
//else if(!(a.W==0))
{
b.W >>= 1;
//temp+=0x00;
//led_light1=0;led_light=1;delay_2(40000);
}
else
{
TR0 = 0;
TH0 = TL0 = 0;
goto read_error;
}
i++;
}
//取出奇位
DATA = b.B.L;
BIT13 = BIT7;
BIT12 = BIT5;
BIT11 = BIT3;
BIT10 = BIT1;
DATA = b.B.H;
BIT17 = BIT7;
BIT16 = BIT5;
BIT15 = BIT3;
BIT14 = BIT1;
bankdata[j] = DATA1;
}
read_ok = 1;//讀卡完成了
read_error:
_nop_();
}
}
/***************************************************/
void f_writecard(uchar x)//寫卡
{
p_U2270B_CFE = 1;
delay_2(232); //>2.5ms
//psw=0 standard write
if (x == write_command0)//寫密碼:初始化密碼
{
uchar i;
uchar data *data p;
p = cominceptbuff;
p_U2270B_CFE = 0;
delay_2(31);//start gap>330us
write_bit(1);//寫操作碼1:10
write_bit(0);//寫操作碼0
write_bit(0);//寫鎖定位0
for(i = 0;i < 35;i++)
{
write_bit(1);//寫數據位1
}
p_U2270B_CFE = 1;
led_light1 = 0;
led_light = 1;
delay_2(40000);//測試使用
//write_block(cominceptbuff[4],p);
p_U2270B_CFE = 1;
bankdata[20] = cominceptbuff[0];//密碼存入
bankdata[21] = cominceptbuff[1];
bankdata[22] = cominceptbuff[2];
bankdata[23] = cominceptbuff[3];
}
else if (x == write_command1)//配置卡參數:初始化
{
uchar data *data p;
p = cominceptbuff;
write_bit(1);//寫操作碼1:10
write_bit(0);//寫操作碼0
write_bit(0);//寫鎖定位0
write_block(cominceptbuff[4],p);
p_U2270B_CFE= 1;
}
//psw=1 pssword mode
else if(x == write_command2) //密碼寫數據
{
uchar data*data p;
p = &bankdata[24];
write_bit(1);//寫操作碼1:10
write_bit(0);//寫操作碼0
write_password(p);//發口令
write_bit(0);//寫鎖定位0
p = cominceptbuff;
write_block(cominceptbuff[4],p);//寫數據
}
else if(x == write_command3)//aor //喚醒
{
//cominceptbuff[1]操作碼10 X xxxxxB
uchar data *data p;
p = cominceptbuff;
write_bit(1);//10
write_bit(0);
write_password(p);//密碼
p_U2270B_CFE = 1;//此時數據不停的循環傳出
}
else //停止操作碼
{
write_bit(1);//11
write_bit(1);
p_U2270B_CFE = 1;
}
p_U2270B_CFE = 1;
delay_2(560);//5.6ms
}
/************************************/
void f_clearpassword()//清除密碼
{
uchar data *data p;
uchar i,x;
p = &bankdata[24];//原密碼
p_U2270B_CFE = 0;
delay_2(18);//start gap>150us
//操作碼10:10xxxxxxB
write_bit(1);
write_bit(0);
for(x = 0;x < 4;x++)//發原密碼
{
DATA = *(p++);
for(i = 0;i < 8;i++)
{
write_bit(BIT0);
DATA >>= 1;
}
}
write_bit(0);//鎖定位0:0
p = &cominceptbuff[0];
write_block(0x00,p);//寫新配置參數:pwd=0
//密碼無效:即清除密碼
DATA = 0x00;//停止操作碼00000000B
for(i = 0;i < 2;i++)
{
write_bit(BIT7);
DATA <<= 1;
}
p_U2270B_CFE = 1;
delay_2(560);//5.6ms
}
/*********************************/
void f_changepassword()//修改密碼
{
uchar data *data p;
uchar i,x,addr;
addr = 0x07;//block7
p = &Nkey_a[0];//原密碼
DATA = 0x80;//操作碼10:10xxxxxxB
for(i = 0;i < 2;i++)
{
write_bit(BIT7);
DATA <<= 1;
}
for(x = 0;x < 4;x++)//發原密碼
{
DATA = *(p++);
for(i = 0;i < 8;i++)
{
write_bit(BIT7);
DATA >>= 1;
}
}
write_bit(0);//鎖定位0:0
p = &cominceptbuff[0];
write_block(0x07,p);//寫新密碼
p_U2270B_CFE = 1;
bankdata[24] = cominceptbuff[0];//密碼存入
bankdata[25] = cominceptbuff[1];
bankdata[26] = cominceptbuff[2];
bankdata[27] = cominceptbuff[3];
DATA = 0x00;//停止操作碼00000000B
for(i = 0;i < 2;i++)
{
write_bit(BIT7);
DATA <<= 1;
}
p_U2270B_CFE = 1;
delay_2(560);//5.6ms
}
/***************************子函數***********************************/
void write_bit(bit x)//寫一位
{
if(x)
{
p_U2270B_CFE = 1;
delay_2(32);//448*11.0592/120=42延時448us
p_U2270B_CFE = 0;
delay_2(28);//280*11.0592/120=26寫1
}
else
{
p_U2270B_CFE = 1;
delay_2(92);//192*11.0592/120=18
p_U2270B_CFE = 0;
delay_2(28);//280*11.0592/120=26寫0
}
}
/*******************寫一個block*******************/
void write_block(uchar addr,uchar data *data p)
{
uchar i,j;
for(i = 0;i < 4;i++)//block0數據
{
DATA = *(p++);
for(j = 0;j < 8;j++)
{
write_bit(BIT0);
DATA >>= 1;
}
}
DATA = addr <<= 5;//0地址
for(i = 0;i < 3;i++)
{
write_bit(BIT7);
DATA <<= 1;
}
}
/*************************************************/
void write_password(uchar data *data p)
{
uchar i,j;
for(i = 0;i < 4;i++)//
{
DATA = *(p++);
for(j = 0;j < 8;j++)
{
write_bit(BIT0);
DATA >>= 1;
}
}
}
/*************************************************/
void main()
{
initial();
TI = RI = 0;
ES = 1;
EA = 1;
delay_2(28);
//f_readcard();
while(1)
{
f_readcard(); //讀卡
f_writecard(command1); //寫卡
f_clearpassword(); //清除密碼
f_changepassword(); //修改密碼
}
}
標簽：
12345
上傳時間：
2017-10-20
上傳用戶：my_lcs
This edition updates and continues the series of books based on the residential
courses on radiowave propagation organised by the IEE/IET.
The first course was held in 1974, with lectures by H. Page, P. Matthews,
D. Parsons, M.W. Gough, P.A. Watson, E. Hickin, T. Pratt, P. Knight, T.B. Jones,
P.A. Bradley, B. Burgess and H. Rishbeth.
標簽：
Propagation
Radiowaves
edition
3rd
of
上傳時間：
2020-05-31
上傳用戶：shancjb
