Question

我正在提高我在黑客等级上的java编程技能，我正试图解决这个问题。Java Loop。

我的输入适用于第一个 a ， b 和 n < / em> ，但第二个值不起作用：

2

0 2 10

5 3 5

输出：

2 6 14 30 62 126 254 510 1022 2046

8 19 36 65 118

JAVA代码：

public class Solution { public static void main(String[] args) { // TODO Auto-generated method stub Scanner sc = new Scanner(System.in); int number =sc.nextInt(); int loop=1; int result=0; /*2 0 2 10 5 3 5 2 6 14 30 62 126 254 510 1022 2046 8 14 26 50 98 */ while(loop<=number){ int a=sc.nextInt(); int b=sc.nextInt(); int c=b; int n=sc.nextInt(); result=0; for(int x=1;x<=n;x++){ result=a+(1*b)+result; System.out.printf(" "+result +" "); b*=2; } loop++; } } }

Answer 1

试试这个：

static int[] javaLoops(int a, int b, int n) {
    int[] result = new int[n];
    for (int i = 0, k = 1, e = a + k * b; i < n; ++i, k *= 2, e += k * b)
        result[i] = e;
    return result;
}

public void main(String[] args) {
    System.out.println(Arrays.toString(javaLoops(0, 2, 10)));
    // -> [2, 6, 14, 30, 62, 126, 254, 510, 1022, 2046]
    System.out.println(Arrays.toString(javaLoops(5, 3, 5)));
    // -> [8, 14, 26, 50, 98]
}

Answer 2

import java.util.*;
import java.io.*;
class Solution{
    public static void main(String []argh){
        Scanner in = new Scanner(System.in);
        int t=in.nextInt();
        for(int j=0;j<t;j++){
            int a = in.nextInt();
            int b = in.nextInt();
            int n = in.nextInt();
            int x=1;
        int temp=a;
        for(int i=1;i<=n;i++){
            temp+=(x*b);
            System.out.print(temp+" ");
            x*=2;
            }
            System.out.println();
        }
        in.close();
    }
}

Answer 3

你在for（x）循环的每次迭代中都会再次添加一个！每个输出的术语只应包括一次。

此外，您的白色间距看起来不正确。每行输出都会有一个尾随空格，每个测试用例之间没有新行。

这似乎是一个有效的解决方案：

import java.util.Scanner;

public class JavaLoops {
    public static void main(String[] args) {
        /*
        INPUT
        2
        0 2 10
        5 3 5
        OUTPUT
        2 6 14 30 62 126 254 510 1022 2046
        8 14 26 50 98
        */
        Scanner in = new Scanner(System.in);
        int t, tc, a, b, c, n, i;
        tc = in.nextInt();
        for (t = 0; t < tc; ++t) {
            a = in.nextInt();
            b = in.nextInt();
            c = 0;
            n = in.nextInt();
            for (i = 0; i < n; ++i) {
                System.out.print(a + c + b);
                c += b;
                b *= 2;
                if (i < n - 1) {
                    System.out.print(" ");
                }
            }
            System.out.println();
        }
    }
}

Answer 4

试试这个！

import java.util.Scanner;

public class Loops {
    public static void main(String[] args) {
        int a, b, n, t,i = 0;
        Scanner sc = new Scanner(System.in);
        t = sc.nextInt();

        while(i < t){
            int sum = 0;
            a = sc.nextInt();
            b = sc.nextInt();
            n = sc.nextInt();

            for (int k = 0; k < n; k++) {
                if(k < 1)
                    sum += a + ((int)Math.pow(2, k) * b);
                else
                    sum += ((int)Math.pow(2, k) * b);
                    System.out.printf("%s ",sum);
            }
            System.out.println();
            i++;
        }
    }
}

Answer 5

试试这个

import java.util.*;
import java.io.*;

class Solution{
        static void series(int a, int b, int n) {

    for (int i = 0, k = 1, e = a + k * b; i < n; ++i, k *= 2, e += k * b)

        System.out.print(e+" ");

}

public static  void main(String[] args) {
    Scanner in = new Scanner(System.in);

        int t=in.nextInt();
    for(int i=0;i<t;i++) {
         int a = in.nextInt();
        int b = in.nextInt();
        int n = in.nextInt();
    series(a,b,n);
        System.out.println("");
    }



}
}

Answer 6

试试这个......

import java.util.*;
import java.io.*;

class Solution{
public static void main(String []argh){
    Scanner in = new Scanner(System.in);
    int t=in.nextInt();
    for(int i=0;i<t;i++){
        int a = in.nextInt();
        int b = in.nextInt();
        int n = in.nextInt();
        int sum = 0;
        int pow1 = 0;


        for(int j = 0; j<n;j++){
            pow1 = pow1 + ((int)Math.pow(2,j) * b); 
            sum = a + pow1 ;
            System.out.print(sum + " ");
        }
        System.out.println();

    }
    in.close();
}
}

Answer 7

public static void EasyJavaLoop2(){
    Scanner in = new Scanner(System.in);
    int t=in.nextInt();
    int a =0 , b = 0 , n = 0;
    for(int k=0;k<t;k++){
         a = in.nextInt();
         b = in.nextInt();
         n = in.nextInt();
             int sum = 0;
             int stage = 1;
            sum += a+(stage*b);
            for (int i = 0; i <= n-1; i++) {
                System.out.print(sum + " ");
                stage=stage*2;
                sum += (stage*b);

       }System.out.println("");

    }
    in.close();




}

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8 个答案: