如何使用嵌套的for循环显示抵押贷款付款

Question

我正试图使用嵌套的for循环为抵押贷款程序显示一个表。外循环由利率控制，从起始利率到结束利率，内循环由起始年期到结束年期控制。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 

这就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;
}
}

Answer 1

所以我这样解决了它：

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;
}
}