public class MathRandom{
public static int GetEvenNum(double a,double b){
int s = (int)a +(int)(Math.random()*(b-a));
if(s%2==0){
return s;
}else
return s+1;
}
public static void For(double a,double b){
for(int i=1;i<=6;i++){
System.out.println("s" + i + "=" + GetEvenNum(a,b));
}
System.out.println();
}
public static void main(String args[]){
For(1,1000);
}
}
问题是让在1-1000的区间产生6个随机数 并且求出他们的和 我已经把随机数都求出来了 但是求和想了半天也没想出来该怎么弄,求大神给指教下,谢谢
public static int GetEvenNum(double a,double b){
int s = (int)a +(int)(Math.random()*(b-a));
if(s%2==0){
return s;
}else
return s+1;
}
public static void For(double a,double b){
for(int i=1;i<=6;i++){
System.out.println("s" + i + "=" + GetEvenNum(a,b));
}
System.out.println();
}
public static void main(String args[]){
For(1,1000);
}
}
问题是让在1-1000的区间产生6个随机数 并且求出他们的和 我已经把随机数都求出来了 但是求和想了半天也没想出来该怎么弄,求大神给指教下,谢谢
int s = (int)a +(int)(Math.random()*(b-a));
if(s%2==0){
return s;
}else
return s+1;
} public static void For(double a,double b){
int sum = 0; // 保存和 for(int i=1;i<=6;i++){
sum += GetEvenNum(a,b);
System.out.println("s" + i + "=" + sum);
}
System.out.println(); } public static void main(String args[]){
For(1,1000);
}
}
public static void main(String[] args) {
int[] nums = new int[6];
int sum = 0;
Random random = new Random();
for (int i = 0; i < nums.length; i++) {
nums[i] = getNums(random);
}
for (int i = 0; i < nums.length; i++) {
System.out.print(nums[i] + ",");
sum += nums[i];
}
System.out.print("\r"+sum);
} public static int getNums(Random random) {
return random.nextInt(1000);
}
}
我比较喜欢按照自己的思路,写代码
public static void main(String[] args) {
int[] nums = new int[6];
int sum = 0;
Random random = new Random();
for (int i = 0; i < nums.length; i++) {
nums[i] = getNums(random);
}
for (int i = 0; i < nums.length; i++) {
System.out.print(nums[i] + ",");
sum += nums[i];
}
System.out.print("\r"+sum);
} public static int getNums(Random random) {
return random.nextInt(1000);
}
}是这样的
public class RandomTest {
private static Random random = new Random();
private static int[] getRandomArray(){
int[] randomArray = new int[6];
System.out.println("生成的1到1000的随机数为:");
for(int i = 0; i < 6; i++){
randomArray[i] = random.nextInt(1000) + 1;
System.out.print(" " + randomArray[i]);
}
return randomArray;
}
private static int getRandomSum(int[] randomArray){
int sum = 0;
for(int random: randomArray){
sum += random;
}
return sum;
}
public static void main(String[] args) {
int[] array = getRandomArray();
int sum = getRandomSum(array);
System.out.println("他们之和为: " + sum);
}
}
int sum=0;
Random ran=new Random();
for (int i = 0; i < 6; i++) {
sum=sum+ran.nextInt(1000)+1;
}
System.out.println(sum);
}
public static void main(String[] args) {
getRandom();
}
private static Random random = new Random();
private static void getRandomArray() {
System.out.println("生成的1到1000的随机数为:");
int sum = 0;
for (int i = 0; i < 6; i++) {
int random_i = random.nextInt(1000) + 1;
System.out.print(" " + random_i);
sum += random_i;
}
System.out.println("它们的和为: " + sum);
}
public static void main(String[] args) {
getRandomArray();
}
}
static int sum = 0;
public class MathRandom{
public static int GetEvenNum(double a, double b) {
int s = (int) a + (int) (Math.random() * (b - a));
if (s % 2 == 0) {
return s;
} else
return s + 1;
} public static void For(double a, double b) {
for (int i = 1; i <= 6; i++) {
int temp = GetEvenNum(a, b);
System.out.println("s" + i + "=" + temp);
sum += temp ;
}
System.out.println(); } public static void main(String[] args) throws FileNotFoundException { For(1, 1000);
System.out.println("总数为: " + sum);
}
}红色部分为我添加的代码,比较看看。
<span style="color: #FF0000;">static int sum = 0;</span>
public static int GetEvenNum(double a, double b) {
int s = (int) a + (int) (Math.random() * (b - a));
if (s % 2 == 0) {
return s;
} else
return s + 1;
}
public static void For(double a, double b) {
for (int i = 1; i <= 6; i++) {
int temp = GetEvenNum(a, b);
System.out.println("s" + i + "=" + temp);
<span style="color: #FF0000;">sum += temp ;</span>
}
System.out.println();
}
public static void main(String[] args) throws FileNotFoundException {
For(1, 1000);
<span style="color: #FF0000;">System.out.println("总数为: " + sum);</span>
}
}格式乱了。