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# 1607094239 金浩 (杂七杂八写了一堆······)
package no.one; public class BaseSort{ public void sort(int []a){ System.out.println("排序算法"); } } package no.one; public class Factory { private BaseSort sort; //依赖注入 public void setSort(BaseSort sort){ this.sort = sort; } public void doSort(int []a){ sort.sort(a); } }//策略类 package no.one; public class InsertSort extends BaseSort{//插入排序 public void sort(int array[]){ int i,j,longth=0; int temp; for(int s:array){ longth++; } int first=0; int last =longth-1; for (i = first+1; i<=last;i++) { temp = array[i]; j=i-1; //与已排序的数逐一比较,大于temp时,该数后移 while((j>=first) && (array[j] > temp)) //当first=0,j循环到-1时,由于[[短路求值]],不会运算array[-1] { array[j+1] = array[j]; j--; } array[j+1] = temp; //被排序数放到正确的位置 } Print dis = new Print(); dis.Display(array, longth); } } package no.one; public class QuickSort extends BaseSort{ //快速排序 public void sort(int array[]){ int i,j,longth=0; int temp; for(int s:array){ longth++; } int first=0; int last =longth-1; if(first<last) { i=first;j=last; array[0]=array[i]; //准备以本次最左边的元素值为标准进行划分,先保存其值 do { while(array[j]>array[0] && i<j) j--; //从右向左找第1个小于标准值的位置j if(i<j) //找到了,位置为j { array[i] = array[j]; i++; } //将第j个元素置于左端并重置i while(array[i]<array[0] && i<j) i++; //从左向右找第1个大于标准值的位置i if(i<j) //找到了,位置为i { array[j] = array[i]; j--; } //将第i个元素置于右端并重置j }while(i!=j); array[i] = array[0]; //将标准值放入它的最终位置,本次划分结束 this.sort(array, first, i-1); //对标准值左半部递归调用本函数 this.sort(array, i+1, last); //对标准值右半部递归调用本函数 } Print dis = new Print(); dis.Display(array, longth); } public void sort(int array[],int l,int r){//为了递归= = int i,j,longth=0; int temp; for(int s:array){ longth++; } int first=0; int last =longth-1; if(first<last) { i=first;j=last; array[0]=array[i]; //准备以本次最左边的元素值为标准进行划分,先保存其值 do { while(array[j]>array[0] && i<j) j--; //从右向左找第1个小于标准值的位置j if(i<j) //找到了,位置为j { array[i] = array[j]; i++; } //将第j个元素置于左端并重置i while(array[i]<array[0] && i<j) i++; //从左向右找第1个大于标准值的位置i if(i<j) //找到了,位置为i { array[j] = array[i]; j--; } //将第i个元素置于右端并重置j }while(i!=j); array[i] = array[0]; //将标准值放入它的最终位置,本次划分结束 this.sort(array, first, i-1); //对标准值左半部递归调用本函数 this.sort(array, i+1, last); //对标准值右半部递归调用本函数 } } } package no.one; public class SelectSort extends BaseSort{ //选择排序 public void sort(int array[]){ int i,j,longth=0; int temp,min; for(int s:array){ longth++; } for(i = 0; i < longth - 1; i ++) { min = i; //查找最小值 for(j = i + 1; j < longth; j ++) if(array[min] > array[j]) min = j; //交换 if(min != i) { temp = array[min]; array[min] = array[i]; array[i] = temp; } } Print dis = new Print(); dis.Display(array, longth); } } package no.one; import java.util.Arrays; import java.util.Scanner; public class Inport { public int[] jin(int n){ // System.out.println("请输入你要排序的数的个数:"); // Scanner jin= new Scanner(System.in); // int n= jin.nextInt(); int a[] = new int[n] ; Scanner s= new Scanner(System.in); for(int i= 0;i<n;i++){ a[i]=s.nextInt(); } System.out.println("您输入的数组为"+Arrays.toString(a)); return a; } } package no.one; public class Print { void Display(int array[],int longth){ System.out.println(longth+"个数字的排序为:"); for(int j1= 0; j1<longth; j1++){ System.out.print(array[j1]+" "); } System.out.println("\n"); } } package no.one; //import java.util.Arrays; import java.util.Scanner; public class Test { //自己用键盘输入 public static void main(String[] args) { // TODO 自动生成的方法存根 System.out.println("请输入你要排序的数的个数:"); Scanner jin= new Scanner(System.in); int n= jin.nextInt(); System.out.println("请输入你要排序的数(用空格分开):"); Inport inarray = new Inport(); int a[] =inarray.jin(n); // Factory factory=new Factory(); BaseSort select_sort = new SelectSort(); factory.setSort(select_sort);factory.doSort(a); BaseSort insert_sort = new InsertSort(); factory.setSort(insert_sort);factory.doSort(a); BaseSort quick_sort = new InsertSort(); factory.setSort(quick_sort);factory.doSort(a); } }
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# 1607094239 金浩
(杂七杂八写了一堆······)
The text was updated successfully, but these errors were encountered: