Methods 数组分配问题
我得到一个不兼容的必需类型int,在这一行中找到:void -->moneyCount=countdemonations(变更、面额[i])。想知道为什么吗Methods 数组分配问题,methods,Methods,我得到一个不兼容的必需类型int,在这一行中找到:void -->moneyCount=countdemonations(变更、面额[i])。想知道为什么吗 public class Change { int [] denomination = {1,2,5,10,20,50,100,200,500,1000,2000,5000}; int moneyCount = 0; public void catagorizeChange(int change){
public class Change {
int [] denomination = {1,2,5,10,20,50,100,200,500,1000,2000,5000};
int moneyCount = 0;
public void catagorizeChange(int change){
for (int i = 0; i < denomination.length; i++){
moneyCount = countDemoninations(change, denomination[i]);
}
}
public void countDemoninations(int change, int denomination){
int moneyCount =0;
while (change >= denomination){
moneyCount = moneyCount++;
change = change - denomination;
}
}
}
公共类更改{
int[]面额={1,2,5,10,20,50100200500100020005000};
int moneyCount=0;
公共无效分类更改(内部更改){
for(int i=0;i=面额){
moneyCount=moneyCount++;
变更=变更-面额;
}
}
}
我是一名新的java学生,我想知道下面编辑的代码是否是一个良好的实践,即在另一个方法中使用了一个方法,而这两个方法都属于同一个类
public void countChangedenominations (int change){
for (int i = 0; i < moneyValuearray.length; i++){
moneyCountarray[i] = countDemonination(change, moneyValuearray[i]);
}
}
public int countDemonination(int change, int denomination){
while (change >= denomination){
moneyCount = ++moneyCount;
change = change - denomination;
}
return moneyCount;
public void countchange面额(int-change){
对于(int i=0;i=面额){
moneyCount=++moneyCount;
变更=变更-面额;
}
返回moneyCount;
线路问题的根源:
moneyCount = countDemoninations(change, denomination[i]);
是不是countdemoninications
属于类型,而moneyCount
属于类型int
要解决此问题,请将您的countdemonations
方法签名更改为返回int
而不是void
,然后将moneyCount
作为方法中的最后一条语句返回:
public int countDemoninations( int change, int denomination ) {
int moneyCount = 0;
while ( change >= denomination ) {
moneyCount = moneyCount++;
change = change - denomination;
}
return moneyCount;
}
除了代码> >计数项>代码>必须返回某个可供使用的东西,
moneyCount
的是旧值。换句话说,moneyCount
将保持为0。