我有一个包含 2 到 6 之间整数值的数组列表,我测试每个数字是奇数还是偶数,如下所示:
JSONObject outerObject = new JSONObject();
JSONArray outerArray = new JSONArray();
JSONObject [] innerObject = new JSONObject[list1.size()];
for ( i = 0; i < list1.size(); i++)// change to list1.size()
{
innerObject[i]=new JSONObject();
innerObject[i].put("Item" , list1.get(i));
if(list1.get(i)%2==0)
{
innerObject[i].put("Odd or Even", "number "+list1.get(i)+" is even");
}
else
innerObject[i].put("Odd or Even", "number "+list1.get(i)+" is odd");
outerArray.put(innerObject[i]);
}
outerObject.put("rows", outerArray);
return outerObject.toString();
然后我有以下 JSON 文件结果
{"rows":[
{"Item":2,"Odd or Even":"number 2 is even"},
{"Item":3,"Odd or Even":"number 3 is odd"},
{"Item":4,"Odd or Even":"number 4 is even"},
{"Item":5,"Odd or Even":"number 5 is odd"},
{"Item":6,"Odd or Even":"number 6 is even"}
]}
现在我想找到数组列表项之间的乘法 像:
{"rows":[
{"Item":2,"Odd or Even":"number 2 is even", "Multiplication:[4,6]"},
{"Item":3,"Odd or Even":"number 3 is odd","Multiplication:[6]"},
{"Item":4,"Odd or Even":"number 4 is even"},
{"Item":5,"Odd or Even":"number 5 is odd"},
{"Item":6,"Odd or Even":"number 6 is even"}
]}
我知道我需要在第一个循环内使用另一个 for 循环,如下所示
for (j=i; j < list1.size(); j++)
{
inerArray[j]=new JSONArray();
if (list1.get(j)%list.get(i)==0)
inerArray[j].put(list1.get(j));
}
innerObject[i].put("Multiplication" , inerArray);
但是不起作用
我正在使用 Java 和 Restful Web 服务
最佳答案
如果它对您有用,您可以尝试一下:-
public static void main(String args[]){
List<Integer> list1 = new ArrayList<Integer>();
list1.add(2);
list1.add(3);
list1.add(4);
list1.add(5);
list1.add(6);
JSONObject outerObject = new JSONObject();
JSONArray outerArray = new JSONArray();
List<Integer> duplicateValue=new ArrayList<Integer>();
JSONObject [] innerObject = new JSONObject[list1.size()];
for (int i = 0; i < list1.size(); i++)// change to list1.size()
{
JSONArray inerArray = new JSONArray();
innerObject[i]=new JSONObject();
innerObject[i].put("Item" , list1.get(i));
if(list1.get(i)%2==0)
{
innerObject[i].put("Odd or Even", "number "+list1.get(i)+" is even");
}
else{
innerObject[i].put("Odd or Even", "number "+list1.get(i)+" is odd");
}
for (int j=i; j < list1.size(); j++)
{
if(list1.get(j)!=list1.get(i)){
if (list1.get(j)%list1.get(i)==0){
if(!duplicateValue.contains(list1.get(j))){
inerArray.add(list1.get(j));
duplicateValue.add(list1.get(j));
}
}
}
}
if(inerArray.size()!=0){
innerObject[i].put("Multiplication" , inerArray);
}
outerArray.add(innerObject[i]);
}
outerObject.put("rows", outerArray);
System.out.println(outerObject.toString());
}
OutPut :- {"rows":[{"Item":2,"Odd or Even":"number 2 is even","Multiplication":[4,6]},{"Item":3,"Odd or Even":"number 3 is odd","Multiplication":[6]},{"Item":4,"Odd or Even":"number 4 is even"},{"Item":5,"Odd or Even":"number 5 is odd"},{"Item":6,"Odd or Even":"number 6 is even"}]}
关于java - 在 Java 中的 JSON 对象中使用 JSON 数组,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/31667150/