해수면 Java 프로젝트

Question

해수면을 2100 년까지 계산하는 프로그램을 개발하려고합니다. 연구 결과에 따르면 해수면은 2.5 피트 (30 인치) - 6.5 피트 (78 인치). 내 프로그램은 사용자에게 해수면이 몇 센티미터 올라 갔는지 계산할 것을 요청하지만, 정보가 연간 3488과 .9069 인치 사이의 임의의 숫자가되기를 원한다. 해발 2.5 피트 및 6.5 피트. 그래서 내 질문은 해수면이 얼마나 상승했는지 갤런 수로 출력 할 수 있도록 사용자가 입력 한 해마다 난수를 생성 할 수있는 방법입니다.

/takes the input from the user of all the way up to which year 
    /they want to know the number of inches/ gallons the sea level has risen 
    /using reiman summs and a chart 
/
/
    /*******************************************************************************/ 
import java.util.Random; 
import java.util.Scanner; 

    public class CalcProject 
    { 

    public static void main(String[] args) 
    { 
    //variables for the program 
    int year; 
    int numOfYears; 
    double leastRise = .3488; //y = .3488x , x is the inches of rainfall 
    double highRise = .9069; //y= .9069x , x is the inches of rainfall 
    double seaLevel1; 
    double seaLevel2; 


    //Describing what the program does to the user 
    System.out.println("This program caluclates the number of gallons/inches" + 
        "the sea level will rise based on your input." + "\n"); 

    //Asking for the users year they want to calculate 
    System.out.println("Please enter which year you wish to know how much the water level will have   risen since 2014"); 

    Scanner scan = new Scanner(System.in); 
    year = scan.nextInt(); 

    if(year <= 2014 || year > 2100)  
    { 
    do 
    { 
     System.out.println("Please enter a valid year between 2015 and 2100"); 
     year = scan.nextInt(); 

    } while((year <= 2014 || year > 2100)); 

    } 

    //puts the year into a number of years from 2014 
    numOfYears = year-2014; 
    System.out.println("The number of years between now and the year you chose is: " +      numOfYears); 

    //uses the least inches of sealevel 
    seaLevel1 = numOfYears * leastRise; 
    System.out.println("The total sealevel in inches is " + seaLevel1 + " for " + year); 

    //uses the most inches of seaLevel 
    seaLevel2 = numOfYears * highRise; 
    System.out.println("The total sealevel in inches is " + seaLevel2 + " for " + year); 

    //calculating radnom numbers for each year 

Answer 1

다음은 이상한 난수를 처리하는 간단한 방법입니다.

int numOfYears; 
double leastRise = .3488; 
double highRise = .9069; 
double seaLevel3 = 0; 

int i = 0; 
while (i < numOfYears) { 
    double rand = Math.random(); 
    if (rand >= leastRise && rand <= highRise) { 
     // rand is some sea level value representing a year 
     seaLevel3 += rand; 
     i++; 
    } 
} 
System.out.println("The total sealevel in inches is " + seaLevel3 + " for " + year);