Question

我在过去的2个小时内一直试图制作this，我试过这个并且没有任何错误。

 [
   {
     "storeName": "Ye Olde Candy Shoppe",
     "address": "1313 Vampire Lane, Cityville NY 99999",
     "zipCode": "99999",
     "storeSize": "large",
     "visits": [
       {
         "key": "5/3/12",
         "values": [
           {
             "storeID": "53454447",
             "storeName": "Ye Olde Candy Shoppe",
             "city": "Cityville",
             "building": "1313",
             "street": "Vampire Lane",
             "zipcode": "99999",
             "storeSize": "large",
             "storeVisitDate": "5/3/12",
             "action": "Return",
             "dollarAmount": "65.43"
           },
           {
             "storeID": "53454447",
             "storeName": "Ye Olde Candy Shoppe",
             "city": "Cityville",
             "building": "1313",
             "street": "Vampire Lane",
             "zipcode": "99999",
             "storeSize": "large",
             "storeVisitDate": "5/3/12",
             "action": "Purchase",
             "dollarAmount": "12.43"
           },
           {
             "storeID": "53454447",
             "storeName": "Ye Olde Candy Shoppe",
             "city": "Cityville",
             "building": "1313",
             "street": "Vampire Lane",
             "zipcode": "99999",
             "storeSize": "large",
             "storeVisitDate": "5/3/12",
             "action": "Purchase",
             "dollarAmount": "5.43"
           }
         ]
       },
       {
         "key": "12/31/12",
         "values": [
           {
             "storeID": "53454447",
             "storeName": "Ye Olde Candy Shoppe",
             "city": "Cityville",
             "building": "1313",
             "street": "Vampire Lane",
             "zipcode": "99999",
             "storeSize": "large",
             "storeVisitDate": "12/31/12",
             "action": "Purchase",
             "dollarAmount": "2.53"
           }
         ]
       },
       {
         "key": "1/24/13",
         "values": [
           {
             "storeID": "53454447",
             "storeName": "Ye Olde Candy Shoppe",
             "city": "Cityville",
             "building": "1313",
             "street": "Vampire Lane",
             "zipcode": "99999",
             "storeSize": "large",
             "storeVisitDate": "1/24/13",
             "action": "Return",
             "dollarAmount": "2.53"
           },
           {
             "storeID": "53454447",
             "storeName": "Ye Olde Candy Shoppe",
             "city": "Cityville",
             "building": "1313",
             "street": "Vampire Lane",
             "zipcode": "99999",
             "storeSize": "large",
             "storeVisitDate": "1/24/13",
             "action": "Return",
             "dollarAmount": "64.22"
           }
         ]
       }
     ]
   },
   {
     "storeName": "Mike's Bikes",
     "address": "2626 Aardvark Circle, Townsville NY 88888",
     "zipCode": "88888",
     "storeSize": "small",
     "visits": [
       {
         "key": "8/8/14",
         "values": [
           {
             "storeID": "24335234",
             "storeName": "Mike's Bikes",
             "city": "Townsville",
             "building": "2626",
             "street": "Aardvark Circle",
             "zipcode": "88888",
             "storeSize": "small",
             "storeVisitDate": "8/8/14",
             "action": "Purchase",
             "dollarAmount": "443.55"
           },
           {
             "storeID": "24335234",
             "storeName": "Mike's Bikes",
             "city": "Townsville",
             "building": "2626",
             "street": "Aardvark Circle",
             "zipcode": "88888",
             "storeSize": "small",
             "storeVisitDate": "8/8/14",
             "action": "Purchase",
             "dollarAmount": "34"
           },
           {
             "storeID": "24335234",
             "storeName": "Mike's Bikes",
             "city": "Townsville",
             "building": "2626",
             "street": "Aardvark Circle",
             "zipcode": "88888",
             "storeSize": "small",
             "storeVisitDate": "8/8/14",
             "action": "Purchase",
             "dollarAmount": "12.32"
           }
         ]
       },
       {
         "key": "10/3/15",
         "values": [
           {
             "storeID": "24335234",
             "storeName": "Mike's Bikes",
             "city": "Townsville",
             "building": "2626",
             "street": "Aardvark Circle",
             "zipcode": "88888",
             "storeSize": "small",
             "storeVisitDate": "10/3/15",
             "action": "Purchase",
             "dollarAmount": "233.1"
           },
           {
             "storeID": "24335234",
             "storeName": "Mike's Bikes",
             "city": "Townsville",
             "building": "2626",
             "street": "Aardvark Circle",
             "zipcode": "88888",
             "storeSize": "small",
             "storeVisitDate": "10/3/15",
             "action": "Return",
             "dollarAmount": "44.99"
           }
         ]
       }
     ]
   }
 ]

Answer 1

将System.out.println();移出内部for循环。

public class truefalse {

    public static void main(String[] args){
      int nums[][] = new int[5][5];
      for (int i=0; i<5; i++){
          for (int j=0;j<5; j++){
              if(j!=i){
                  nums[i][j]=0;
              } else if(j==i){
                  nums[i][j]=1;
              }
              System.out.print(nums[i][j]);
           }
         System.out.println();
      }
   }
}

此代码的输出为

Answer 2

int nums[][] = new int[5][5];
for (int i=0; i<5; i++) {
  for (int j=0;j<5; j++) {
    if(j!=i) {
      nums[i][j]=0;
    } else if(j==i) {
      nums[i][j]=1;
    }
    System.out.print(nums[i][j]);
  }
  System.out.println();
}

如何以这种方式制作5x5

2 个答案: