java - Fibonacci sequence using a do-while loop in java?

Question

I am trying to print a Fibonacci sequence using a do-while loop in java and can't understand this. Needs to be between 0 and 100.

I have the following code:

int prevPrevVal = 0;
int prevVal = 1;
int currVal;
System.out.println(prevPrevVal);
System.out.println(prevVal);

do
{       
    currVal = prevVal + prevPrevVal;
    System.out.println(currVal);

    prevPrevVal = prevVal;
    prevVal = currVal;          
} while (prevVal <= 100);

Answer 1

这是一个简化的程序，通过在 while 循环中提供条件限制来找出斐波那契数列。希望大家对此有所了解......！

    int a=0;
    int b=0;
    int temp=1;
    do {    
        a=b;
        b=temp;
        temp=a+b;
        System.out.println(temp);
    }while(temp<100);

Answer 2

设法用两个变量来做到这一点，并且没有打印超出范围的数字。对不起，如果它很糟糕，这是我编程的第一天:)

    int x = 0;
    int y = 1;

    do
    {
        System.out.println(x);
        y = x + y;
        if (y < 100)
        {
            System.out.println(y);
        }
        x = x + y;
    } while (x < 100);

Answer 3

使用文档do-while中循环的基本结构：

do {
    statement(s)
} while (expression);

您在“语句”部分中想要的是通过每次迭代增加（并可能输出）您的结果。使用循环的基本斐波那契数do-while列如下所示：

int prevVal = 1;
int prevPrevVal = 0;
int currVal;
do {
    // Add the two numbers
    currVal = prevVal + prevPrevVal;
    // "Bump" up prevPrevVal to prevVal, and prevVal to currVal
    prevPrevVal = prevVal;
    prevVal = currVal;
    // Output to the screen
    System.out.println(currval + "\n");
} while(expression);

Answer 4

这应该是你的解决方案

public static void main(String[] args) {

     int prevVal = 1;
     int prevPrevVal = 0;
     int n = 0;
     do{
         int currVal = prevVal + prevPrevVal;
         prevPrevVal = prevVal;
         prevVal = currVal;
         System.out.print(currVal+" ");
         n++;
     }while(n<5);//n is the number of terms


}

Answer 5

干得好 ：

int prevVal = 1;
int prevPrevVal = 0;
        do{
        int currVal = prevVal + prevPrevVal;
                    //currVal is your Fibonacc seq.
        prevPrevVal = prevVal;
        prevVal = currVal;
    }
    while(yourCondition);

Answer 6

由于您希望斐波那契的条款高达 100，只需更改while (prevVal <= 100);为while (prevVal+prevPrevVal <= 100);

这将打印多达 89 个。