如何使用嵌套的 for 循环显示抵押贷款付款？答案

【问题标题】：How to display mortgage payment with a nested for-loop?如何使用嵌套的 for 循环显示抵押贷款付款？
【发布时间】：2023-03-08 08:41:02
【问题描述】：

我正在尝试使用嵌套的 for 循环显示抵押贷款程序的表格。外循环由利率控制，因为它从起始利率处理到结束，而内循环由以年为单位的开始期限到以年为单位的结束期限控制。每次迭代后利率增加0.25，年份增加5。

当生成多个列时，我在计算付款时遇到困难。

这是预期的输出：

Interest    15 Years        20 Years        25  Years
 4.000       739.69          605.98          527.84 
 4.250       752.28          619.23          541.74 
 4.500       764.99          632.65          555.83 
 4.750       777.83          646.22          570.12 
 5.000       790.79          659.96          584.59

这是我的输出：

Interest
  Rate     15  Years        20  Years        25  Years
 4.000       739.69          739.69          739.69 
 4.250       752.28          752.28          752.28 
 4.500       764.99          764.99          764.99 
 4.750       777.83          777.83          777.83 
 5.000       790.79          790.79          790.79

这是我必须计算的贷款金额：

//startingYear is the first term entered by the user
//ending Year is the last term entered by the user
     displayTableHeader(startingYear, endingYear, startCount, yearCounter);



//sCountaRate is the starting interest rate
// n determines how many time the rate will iterate
        for (int j = sCountRate;j <= n; j++){


//displays first column interest rate
          System.out.printf("\n %1.3f",startRate);


//startCount is the starting year
//ending year is the last term in years entered by user
//yearsCounter determines the amount of time it will increment (5 in this case)
          for (int i = startCount; i <= endingYear;i = i + yearCounter){



//calculates loan payment
            totalPayment = calculateLoanPayment(startRate, loanAmount, startCount); 


            System.out.printf("\t     %.2f ", totalPayment);

          }
//starting interest rate is incremented by .25 after every iteration
          startRate += TF_INCREMENTS;
        }

      }

【问题讨论】：

什么语言？爪哇？
是的，我正在使用 java

标签： java for-loop multiple-columns

【解决方案1】：

所以我这样解决了：

  displayTableHeader(startingYear, endingYear, startingYearDisplay, yearCounter);


        for (int j = sCountRate;j <= n; j++){

          System.out.printf("\n %1.3f",startRate);

          for (int i = startingYear; i <= endingYear;i = i + yearCounter){


            totalPayment = calculateLoanPayment(startRate, loanAmount, startingYearDisplay); 


            System.out.printf("\t%4.2f ", totalPayment);

 //I added this to add 5 every time the inner loop iterates, so it would do the first row.
            startingYearDisplay += 5;

          }
          startRate += TF_INCREMENTS;

//AND this to prevent it of increasing 5 every time a row was printed, so it wont go over the selected amount years.
          startingYearDisplay = startingYear;
        }

      }

【讨论】：