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package arrays.myArray;
public class SortArr {
 public static void main(String[] args) {
  int[] arrInt = { 4, 7, 8, 5, 6, 3, 2, 3, 4 };
  maoPaoSort(arrInt);
  print("ðÅÝÅÅÐò£º", arrInt);
  arrInt = new int[]{ 4, 7, 8, 5, 6, 3, 2, 3, 4 };
  insertSort(arrInt);
  print("²åÈëÅÅÐò£º", arrInt);
  arrInt = new int[]{ 4, 7, 8, 5, 6, 3, 2, 3, 4 };
  checkSort(arrInt);
  print("Ñ¡ÔñÅÅÐò£º", arrInt);
 }
 // ðÅÝÅÅÐò
 private static void maoPaoSort(int[] arrInt) {
  int temp = 0;
  for (int i = 0; i < arrInt.length; i++) {
   for (int j = 0; j < arrInt.length - 1; j++) {
    if (arrInt[i] < arrInt[j]) {
     temp = arrInt[i];
     arrInt[i] = arrInt[j];
     arrInt[j] = temp;
    }
   }
  }
 }
 // ²åÈëÅÅÐò
 private static void insertSort(int[] arrInt) {
  //µ¹ÊýµÚ¶þ¸ö¿ªÊ¼±È½Ï
  for (int i = arrInt.length - 2; i >= 0; i--) {
   int j = 0;
   for (j = arrInt.length - 1; j > i; j--) {
    if (arrInt[i] > arrInt[j]) {
     break;
    }
   }
   int temp = arrInt[i];
   for (int k = i; k < j; k++) {
    arrInt[k] = arrInt[k + 1];
   }
   arrInt[j] = temp;
  }
  
  //ÕýÊýµÚ¶þ¸ö¿ªÊ¼±È½Ï
  /*for (int i = 1; i < arrInt.length; i++) {
   int j = 0;
   for (j = 0; j < arrInt.length - 1; j++) {
    if (arrInt[i] > arrInt[j]) {
     break;
    }
   }
 &nbs


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public class Split{
 public static void main(String[] args){
       double pai = 3.14159;
        findTwo(pai);
  public static void findTwo(double value){
    System.out.println(new DecimalFormat("0.##"). ......

java£º¶þ·Ö²éÕÒ·¨

package arrays.compara;
/**
 *
 * @author Happy ¶þ·Ö²éÕÒ·¨
 */
public class BinarySearch {
 public static void main(String[] args) {
  int[] arrInt = { 2, 34, 32, 24, 23, 34, 12, 3, 4, 2 };
  int index = bSearch(29, arrInt, 0, arrInt.length);
 & ......

java£ºÊÖдMyArrayLisyµÄ³£Ó÷½·¨£¬Ôöɾ¸Ä²é

package arrays.myArray;
public class MyArrayList {
 private Object[] arrObj = new Object[3];
 private int size = 0;
 
 // ³¤¶È
 public int size() {
  return size;
 }
 // insert
 public void add(Object obj) {
  add(size,obj);
&nb ......
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