1.编写一个reverseadd函数,实现两个数倒置后再求和的功能,比如输入123,456就是求321+654,输出975。注意:输入100,200输出3,(自动去除开头的0),超过范围输出-1
思路:接收两个数字,如果为负数,先打印负号,再转为正数进行处理。倒序就利用取余。如果余数为零,则跳过该次循环,不为零,则存到字符串。注意:调整语句要放到continue语句前,否则会死循环。
package com.huawei.test2017.test1;
import java.util.Scanner;
public class test1 {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("请输入两个数字");
int num1 = sc.nextInt();
int num2 = sc.nextInt();
System.out.println( reverseadd(num1,num2) );
}
public static int reverseadd(int num1,int num2) {
if ((num1<1)||(num1>700000)||(num2<1)||(num2>700000)) {
return -1;
}
String res1 = "";
String res2 = "";
while ( num1 != 0 ){
int r1 = num1 % 10;
num1 = num1 / 10;
if ( r1==0 ) {
continue;
}else {
res1 += r1;
}
}
while ( num2 != 0 ){
int r2 = num2 % 10;
num2 = num2 / 10;
if ( r2==0 ) {
continue;
}else {
res2 += r2;
}
}
int reserveresult1 = Integer.parseInt(res1);
int reserveresult2 = Integer.parseInt(res2);
int sum = reserveresult1 + reserveresult2;
return sum;
}
}
2.一个立方体骰子平放在桌面上,有一面正对着读者,称为前面。我们将六个面分别称为左、右、前、后、上、下,每个面对应的数字分别为1、2、3、4、5、6。我们定义以下操作:向前滚动称为F,向后滚动称为B,向左滚动称为L,向右滚动称为R,上下面不变顺时针旋转称为C,上下面不变逆时针旋转称为U。在原始状态情况下,输入对应的操作码,输出最终的骰子状态(按照每个面的顺序左右前后上下)。
package com.huawei.test2017.test1;
import java.util.Scanner;
public class test2 {
private static int state[]= {1,2,3,4,5,6}; //定义初始状态数组
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("请输入一串字符串,L代表向左翻转,R代表向右翻转,F代表向前翻转,B代表向后翻转,A代表逆时针翻转,C代表顺时针翻转");
while(sc.hasNext()) { //如果有下一个事件则返回true
String s = sc.next(); //定义字符串接收操作码
char c[] = s.toCharArray(); //将字符串转换成一个新的字符数组
move(c);
for(int i=0; i<6 ;i++) {
System.out.print( state[i] );
}
}
}
public static void left() { //向左旋转
int temp1 = state[0];
int temp2 = state[1];
state[0] = state[4];
state[1] = state[5];
state[5] = temp1;
state[4] = temp2;
}
public static void front() { //向前旋转
int temp1 = state[2];
int temp2 = state[3];
state[2] = state[4];
state[3] = state[5];
state[5] = temp1;
state[4] = temp2;
}
public static void clockwise() { //顺时针旋转
int temp1 = state[0];
int temp2 = state[1];
state[0] = state[3];
state[1] = state[2];
state[2] = temp1;
state[3] = temp2;
}
public static void move(char s[]) {
for(int i=0; iif (s[i]=='L') {
left();
}
if (s[i]=='R') { //向右旋转通过向左旋转三次实现
left();
left();
left();
}
if (s[i]=='F') {
front();
}
if (s[i]=='B') {
front();
front();
front();
}
if (s[i]=='C') {
clockwise();
}
if (s[i]=='A') {
clockwise();
clockwise();
clockwise();
}
}
}
}
3.当出差遇上大雾,给定距离矩阵,大雾城市(既不能到达,也不能离开),目的地,输出最短路径和路径,迪杰斯特拉结合path数组记录路径,path在迪杰斯特拉更新dis距离数组时更新,大雾城市就是将距离矩阵变为1000,无法到达输出-1。
1.题目描述:老师想知道从某某同学当中,分数最高的是多少,现在请你编程模拟老师的询问。当然,老师有时候需要更新某位同学的成绩。
输入描述:输入包括多组测试数据。每组输入第一行是两个正整数N和M(0 < N<= 30000,0 < M < 5000),分别代表学生的数目和操作的数目。学生ID编号从1编到N。第二行包含N个整数,代表这N个学生的初始成绩,其中第i个数代表ID为i的学生的成绩。接下来又M行,每一行有一个字符C(只取‘Q’或‘U’),和两个正整数A,B,当C为’Q’的时候, 表示这是一条询问操作,他询问ID从A到B(包括A,B)的学生当中,成绩最高的是多少。当C为‘U’的时候,表示这是一条更新操作,要求把ID为A的学生的成绩更改为B。
输出描述:对于每一次询问操作,在一行里面输出最高成绩。
输入例子:
5 7
1 2 3 4 5
Q 1 5
package com.huawei.test2016;
import java.util.Scanner;
import java.util.ArrayList;
public class test1 {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
do {
System.out.println("请输入学生数目和操作数目");
int data[] = new int[2];
data[0] = sc.nextInt();
data[1] = sc.nextInt();
System.out.println("请输入学生成绩");
ArrayList array = new ArrayList();
for(int i=0; i0] ;i++) {
array.add(sc.nextInt());
}
int round = 0;
char a;
int b,c;
while(round1]) {
System.out.println("请输入操作指令");
a = sc.next().charAt(0);
b = sc.nextInt();
c = sc.nextInt();
if (a=='Q') {
int start,end;
if (b1;
end = c-1;
}else {
start = c-1;
end = b-1;
}
int max = array.get(start);
for(int index=start+1; index<=end ;index++) {
if (max<array.get(index)) {
max = array.get(index);
}
}
System.out.println(max);
max = 0;
}
if (a=='U') {
int index1 = b-1;
int newValue = c;
array.set(index1, newValue);
}
round++;
}
} while (sc.hasNext());
sc.close();
}
}
1.实现两个26进制数相加,a代表0,z代表25
package com.huawei.test2018;
/*
* 实现两个26进制数相加,a代表0,z代表25
* 例:bc+z=cb
*/
import java.util.Scanner;
public class test1 {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("请输入两个26进制数");
String res1 = sc.next();
String res2 = sc.next();
int num1=0;
int sum1=0;
char ch1;
for(int i=0;iswitch(ch1){
case 'a' :
num1 = 0;
break;
case 'b' :
num1 = 1;
break;
case 'c' :
num1 = 2;
break;
case 'd' :
num1 = 3;
break;
case 'e' :
num1 = 4;
break;
case 'f' :
num1 = 5;
break;
case 'g' :
num1 = 6;
break;
case 'h' :
num1 = 7;
break;
case 'i' :
num1 = 8;
break;
case 'j' :
num1 = 9;
break;
case 'k' :
num1 = 10;
break;
case 'l' :
num1 = 11;
break;
case 'm' :
num1 = 12;
break;
case 'n' :
num1 = 13;
break;
case 'o' :
num1 = 14;
break;
case 'p' :
num1 = 15;
break;
case 'q' :
num1 = 16;
break;
case 'r' :
num1 = 17;
break;
case 's' :
num1 = 18;
break;
case 't' :
num1 = 19;
break;
case 'u' :
num1 = 20;
break;
case 'v' :
num1 = 21;
break;
case 'w' :
num1 = 22;
break;
case 'x' :
num1 = 23;
break;
case 'y' :
num1 = 24;
break;
case 'z' :
num1 = 25;
break;
}
int chengfang=0;
chengfang = (int)Math.pow(26, res1.length()-1-i);
num1 = num1*chengfang;
sum1 += num1;
}
int num2=0;
int sum2=0;
char ch2;
for(int a=0;aswitch(ch2){
case 'a' :
num2 = 0;
break;
case 'b' :
num2 = 1;
break;
case 'c' :
num2 = 2;
break;
case 'd' :
num2 = 3;
break;
case 'e' :
num2 = 4;
break;
case 'f' :
num2 = 5;
break;
case 'g' :
num2 = 6;
break;
case 'h' :
num2 = 7;
break;
case 'i' :
num2 = 8;
break;
case 'j' :
num2 = 9;
break;
case 'k' :
num2 = 10;
break;
case 'l' :
num2 = 11;
break;
case 'm' :
num2 = 12;
break;
case 'n' :
num2 = 13;
break;
case 'o' :
num2 = 14;
break;
case 'p' :
num2 = 15;
break;
case 'q' :
num2 = 16;
break;
case 'r' :
num2 = 17;
break;
case 's' :
num2 = 18;
break;
case 't' :
num2 = 19;
break;
case 'u' :
num2 = 20;
break;
case 'v' :
num2 = 21;
break;
case 'w' :
num2 = 22;
break;
case 'x' :
num2 = 23;
break;
case 'y' :
num2 = 24;
break;
case 'z' :
num2 = 25;
break;
}
int chengfang2=0;
chengfang2 = (int)Math.pow(26, res2.length()-1-a);
num2 = num2*chengfang2;
sum2 += num2;
}
int sum = sum1 + sum2;
int yushu = 0;
int shang = sum;
String res = "";
while(shang!=0) {
yushu = shang % 26;
String yushu26 = "";
switch(yushu){
case 0 :
yushu26 = "a";
break;
case 1 :
yushu26 = "b";
break;
case 2 :
yushu26 = "c";
break;
case 3 :
yushu26 = "d";
break;
case 4 :
yushu26 = "e";
break;
case 5 :
yushu26 = "f";
break;
case 6 :
yushu26 = "g";
break;
case 7 :
yushu26 = "h";
break;
case 8 :
yushu26 = "i";
break;
case 9 :
yushu26 = "j";
break;
case 10 :
yushu26 = "k";
break;
case 11 :
yushu26 = "l";
break;
case 12 :
yushu26 = "m";
break;
case 13 :
yushu26 = "n";
break;
case 14 :
yushu26 = "o";
break;
case 15 :
yushu26 = "p";
break;
case 16 :
yushu26 = "q";
break;
case 17 :
yushu26 = "r";
break;
case 18 :
yushu26 = "s";
break;
case 19 :
yushu26 = "t";
break;
case 20 :
yushu26 = "u";
break;
case 21 :
yushu26 = "v";
break;
case 22 :
yushu26 = "w";
break;
case 23 :
yushu26 = "x";
break;
case 24 :
yushu26 = "y";
break;
case 25 :
yushu26 = "z";
break;
}
res = yushu26 + res;
shang = shang / 26;
}
System.out.println(res);
}
}