在JAVA进行插入排序的代码：
1 // insertSort.java 2 // demonstrates insertion sort 3 // to run this program: C>java InsertSortApp 4 //-------------------------------------------------------------- 5 class ArrayIns 6 { 7 private long[] a; // ref to array a 8 private int nElems; // number of data items 9 //-------------------------------------------------------------- 10 public ArrayIns(int max) // constructor 11 { 12 a = new long[max]; // create the array 13 nElems = 0; // no items yet 14 } 15 //-------------------------------------------------------------- 16 public void insert(long value) // put element into array 17 { 18 a[nElems] = value; // insert it 19 nElems++; // increment size 20 } 21 //-------------------------------------------------------------- 22 public void display() // displays array contents 23 { 24 for(int j=0; j<nElems; j++) // for each element, 25 System.out.print(a[j] + " "); // display it 26 System.out.println(""); 27 } 28 //-------------------------------------------------------------- 29 public void insertionSort() 30 { 31 int in, out; 32 33 for(out=1; out<nElems; out++) // out is dividing line 34 { 35 long temp = a[out]; // remove marked item 36 in = out; // start shifts at out 37 while(in>0 && a[in-1] >= temp) // until one is smaller, 38 { 39 a[in] = a[in-1]; // shift item to right 40 --in; // go left one position 41 } 42 a[in] = temp; // insert marked item 43 } // end for 44 } // end insertionSort() 45 //-------------------------------------------------------------- 46 } // end class ArrayIns 47 //////////////////////////////////////////////////////////////// 48 class InsertSortApp 49 { 50 public static void main(String[] args) 51 { 52 int maxSize = 100; // array size 53 ArrayIns arr; // reference to array 54 arr = new ArrayIns(maxSize); // create the array 55 56 arr.insert(77); // insert 10 items 57 arr.insert(99); 58 arr.insert(44); 59 arr.insert(55); 60 arr.insert(22); 61 arr.insert(88); 62 arr.insert(11); 63 arr.insert(00); 64 arr.insert(66); 65 arr.insert(33); 66 67 arr.display(); // display items 68 69 arr.insertionSort(); // insertion-sort them 70 71 arr.display(); // display them again 72 } // end main() 73 } // end class InsertSortApp
