Java Learning Notes (For-each loops and array copies)

For-each Cycle

// first cycle, k=data[0]; // second cycle, k=data[1]; // ...  for (int//data is an array {     xxxxx;}

Copy of array

intA//A is the ownerint[]a=New int[100];//A is the managerint[]b=a;//B is manager A and B co-manage an array (change the value of B (a) [x] To change the value of a (b) [x])so the method of copying array A to array B is as follows:int[]a=New int[xx];int[]b=New int[a.length]; for(i=0;i<b.length;i++) B[i]=a[i];

Java Learning Notes (For-each loops and array copies)