Java 从一个主阵列创建子阵列

我仍然掌握着Java。我需要一些在数组中循环的帮助

我的数组看起来像这样

String [] allRecords = ["[BEGIN RECORD]", "[ID]1", "[cName]Agnes", "[Age]12", "[END RECORD]", "[BEGIN RECORD]", "[ID]2", "[cName]Hellen", "[Age]5", "[END RECORD]", "[BEGIN RECORD]", "[ID]3", "[cName]Jack", "[Age]34", "[END RECORD]" ];

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//这给了我一个新的子数组，如下所示：

“[ID]1”、“[cName]Agnes”、“[Age]12”

上面的代码工作正常。我现在需要的是从allRecords数组中读取/切片另一部分，即：“[ID]2”、“[cName]Hellen”、“[Age]5”，然后切片下一个区块“[ID]3”、“[cName]Jack”、“[Age]34”，直到allRecords数组结束

我该怎么做

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谢谢大家!

您现有的代码非常接近，可以很容易地进行修改以实现您的目标。要记住的关键一点是，您现在没有这样做，即从停止的地方开始，而不是在0处重新启动。因此，您已经（为了便于说明而大大简化了）：

int foundIndex=0；
首先，感谢Trenin和Jason的指导。
我努力完成这项任务，总有一天为了别人的利益，我会把为我工作的代码贴在下面

String [] allRecords = {"[BEGIN RECORD]", "[ID]1", "[cName]Agnes", "[Age]12", "[END RECORD]", "[BEGIN RECORD]", "[ID]2", "[cName]Hellen", "[Age]5", "[END RECORD]", "[BEGIN RECORD]", "[ID]3", "[cName]Jack", "[Age]34", "[END RECORD]"};

String beginRecord = "[BEGIN RECORD]";
String endRecord = "[END RECORD]";                
int foundIndex = 0;
int foundEnd = 0;

      for (int i=0; i<allRecords.length; i++) {
      if (endRecord.equals(allRecords[i])) {
           foundEnd = i;    
           break;   
           }                
      }

      //by saving the location of the end of the previous record, and picking up from there, your logic can now be repeatedly in a loop until all valid records are consumed from the input
      foundEnd = foundEnd-1; //arrays are zero based


      for (int i=0; i<allRecords.length; i++) {
          if (beginRecord.equals(allRecords[i])) {
             foundIndex = i+1;  //arrays are zero based
             String [] partAllRecords = Arrays.copyOfRange(allRecords, foundIndex, foundIndex+foundEnd);                   
             System.out.println(Arrays.toString(partAllRecords)); 
             //prints below arrays in logcat
             //[[ID]1, [cName]Agnes, [Age]12]
             //[[ID]2, [cName]Hellen, [Age]5]
             //[[ID]3, [cName]Jack, [Age]34]
         }
      }

String[]allRecords={“[BEGIN RECORD]”、“[ID]1”、“[cName]Agnes”、“[Age]12”、“[END RECORD]”、“[BEGIN RECORD]”、“[ID]2”、“[cName]Hellen”、“[Age]5”、“[END RECORD]”、“[ID]3”、“[cName]Jack”、“[Age]34”、“[END RECORD]”；
字符串beginRecord=“[BEGIN RECORD]”；
字符串endRecord=“[END RECORD]”；
int foundIndex=0；
int foundEnd=0；
对于（int i=0；iYou可以添加循环以多次重复此操作。
//i then use the below code to slice off part of the array

 String [] partAllRecords = Arrays.copyOfRange(allRecords, foundIndex, foundEnd);

int foundIndex = 0;
for (int i=0; i<allRecords.length; i++)
   ... find start record

int foundEnd = 0;
for (int i=0; i<allRecords.length; i++) {
   ... find end record

int foundIndex, foundEnd = -1;

do {

    foundIndex = 0;
    for (int i=foundEnd + 1; i<allRecords.length; i++)
       ... find start record

    foundEnd = 0;
    for (int i=foundIndex + 1; i<allRecords.length; i++) {
       ... find end record

} while a record was found;

String [] allRecords = {"[BEGIN RECORD]", "[ID]1", "[cName]Agnes", "[Age]12", "[END RECORD]", "[BEGIN RECORD]", "[ID]2", "[cName]Hellen", "[Age]5", "[END RECORD]", "[BEGIN RECORD]", "[ID]3", "[cName]Jack", "[Age]34", "[END RECORD]"};

String beginRecord = "[BEGIN RECORD]";
String endRecord = "[END RECORD]";                
int foundIndex = 0;
int foundEnd = 0;

      for (int i=0; i<allRecords.length; i++) {
      if (endRecord.equals(allRecords[i])) {
           foundEnd = i;    
           break;   
           }                
      }

      //by saving the location of the end of the previous record, and picking up from there, your logic can now be repeatedly in a loop until all valid records are consumed from the input
      foundEnd = foundEnd-1; //arrays are zero based


      for (int i=0; i<allRecords.length; i++) {
          if (beginRecord.equals(allRecords[i])) {
             foundIndex = i+1;  //arrays are zero based
             String [] partAllRecords = Arrays.copyOfRange(allRecords, foundIndex, foundIndex+foundEnd);                   
             System.out.println(Arrays.toString(partAllRecords)); 
             //prints below arrays in logcat
             //[[ID]1, [cName]Agnes, [Age]12]
             //[[ID]2, [cName]Hellen, [Age]5]
             //[[ID]3, [cName]Jack, [Age]34]
         }
      }