用Java语言实现的各种排序,包括插入排序、冒泡排序、选择排序、Shell排序、快速排序、归并排序、堆排序、SortUtil等。  V4:/LNq_]  
插入排序: 9	{&g.+  
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package org.rut.util.algorithm.support; P:"R;YCvE  
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import org.rut.util.algorithm.SortUtil; 7k(}U_v  
/** !6KX^j-  
* @author treeroot p~	b4TRvA6  
* @since 2006-2-2 %S`&R5  
* @version 1.0 tk&AZb,sP  
*/ 2R[v*i^S  
public class InsertSort implements SortUtil.Sort{ Q":_\inF  
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/* (non-Javadoc) V\cbIx(Z^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T/_u;My;  
*/ S&_03  
public void sort(int[] data) { {821e&r  
int temp; --K)7  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !l (Vk  
} T$5wH )<  
}   L4>14D\  
} 2~kx3`	Q  
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} )9YDNVo*-  
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冒泡排序: jHFjd'  
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package org.rut.util.algorithm.support; Lce,]z\_  
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import org.rut.util.algorithm.SortUtil; xMJ-=  
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/** .xT?%xSi/  
* @author treeroot (a[BvJf  
* @since 2006-2-2 5 pCicwea#  
* @version 1.0 <=4$.2ym  
*/ uY]';OtG  
public class BubbleSort implements SortUtil.Sort{  .g#}2:3  
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/* (non-Javadoc) K4Q{U@ZJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OrkcY39"~a  
*/ &FXf]9
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public void sort(int[] data) { kTL{Q0q  
int temp; 3:,%>#"  
for(int i=0;i for(int j=data.length-1;j>i;j--){ !> sA.L&=  
if(data[j] SortUtil.swap(data,j,j-1); X-\$<DiJGv  
} 9q`Ewj	R  
} QVT0.GzR  
} G\sx'#Whc  
} w
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} xV>
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选择排序: REh"/d  
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package org.rut.util.algorithm.support; K*@?BE  
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import org.rut.util.algorithm.SortUtil;  $u<;X^  
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/** n{?Du  
* @author treeroot V%R]jbHZ#  
* @since 2006-2-2 $DDO9   
* @version 1.0 8-;.Ejz!\A  
*/ ,RPb<3
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public class SelectionSort implements SortUtil.Sort { 7P$*qj~Vh  
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/* .x=abA$!9  
* (non-Javadoc) &lzY"Y*hA0  
*  [G_ ;78  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !X}+JeU'  
*/ MT{1/A;`)  
public void sort(int[] data) { *).  
int temp; 1I2ndt  
for (int i = 0; i < data.length; i++) { C6e5*S  
int lowIndex = i; hC$e8t60  
for (int j = data.length - 1; j > i; j--) { zZ[kU1Fyv  
if (data[j] < data[lowIndex]) { `{#""I^_  
lowIndex = j; AF:_&gF  
} 3o	rSk  
} Hcf"u&%  
SortUtil.swap(data,i,lowIndex); z>!./z]p  
} s)\PY  
} 4-bM90&1t  
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} k)+{Y	v*  
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Shell排序: /[/L%;a'p  
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package org.rut.util.algorithm.support; t	]BG)]  
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import org.rut.util.algorithm.SortUtil; L	0Ckw},,  
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/** ~=yU%5	s@  
* @author treeroot }oD^tU	IK  
* @since 2006-2-2 61_PSScSY  
* @version 1.0 Ja1 `S+	  
*/ U%Fa.bL~  
public class ShellSort implements SortUtil.Sort{ 2z;nPup,  
 pauO_'j_1p  
/* (non-Javadoc) ?<J~SF	Tt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |K.I%B  
*/ @Mya|zb  
public void sort(int[] data) { B}7j20:Z  
for(int i=data.length/2;i>2;i/=2){ Ifp8oL? S;  
for(int j=0;j insertSort(data,j,i); Lum=5zDo  
} 1!zd#TX  
} EwBrOq`C  
insertSort(data,0,1); F*G]Na@6D  
} :"y2u	  
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/** RSAGSGp  
* @param data +184|nJ<2  
* @param j /Igz[P^\9  
* @param i LTf)`SN	%'  
*/ <mJ8~  
private void insertSort(int[] data, int start, int inc) { vAP1PQX;  
int temp; b|V<Kp  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &am<_Tn*3  
} fx>QP?Z  
} 1TEKq#t;y  
} }se3y  
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} "uplk8iCJ  
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快速排序: ByE@4+9  
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package org.rut.util.algorithm.support; ?yG[VW  
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import org.rut.util.algorithm.SortUtil; `j3 OFC{7E  
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/** # a4OtRiI  
* @author treeroot md bi@ms@  
* @since 2006-2-2 BJ_"FG  
* @version 1.0 me@`;Q3  
*/ SP<(24zdd  
public class QuickSort implements SortUtil.Sort{ IPTFx
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/* (non-Javadoc) B3yTN6-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jc3Q3Th/zn  
*/  k"=*'  
public void sort(int[] data) { 2asRJ97qES  
quickSort(data,0,data.length-1);  tW!*W?  
} $J<WFDn9  
private void quickSort(int[] data,int i,int j){ %$Fe[#1  
int pivotIndex=(i+j)/2; \>9^(N  
file://swap l_;6xkv4  
SortUtil.swap(data,pivotIndex,j); %INkuNa8\  
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int k=partition(data,i-1,j,data[j]); IPn!iv)  
SortUtil.swap(data,k,j); W2%@}IDm  
if((k-i)>1) quickSort(data,i,k-1); J3'q.Pc  
if((j-k)>1) quickSort(data,k+1,j); UFZOu%Y  
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} 0`V=x+*,  
/** 0i5S=L`j  
* @param data @8w[Z o~  
* @param i EhKG"Lb+  
* @param j #Mk3cp^Yl  
* @return E>/~:  
*/ 5MYdLAjV  
private int partition(int[] data, int l, int r,int pivot) { JPL`/WA0  
do{ 1.N2!:&G|  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); >Q_
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SortUtil.swap(data,l,r); 8*Fn02 p  
} '5Kj"aD%  
while(l SortUtil.swap(data,l,r);  +2tFX  
return l; # bjK]+  
} l['p^-I  
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} 
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改进后的快速排序: 0$b4\.0>~  
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package org.rut.util.algorithm.support; <5Ll<0  
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import org.rut.util.algorithm.SortUtil; 7}MnvWP  
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/** g[O  
* @author treeroot 7K&Uu3m  
* @since 2006-2-2 @@-TW`G7  
* @version 1.0 ] ZP!y  
*/ MSBrI3MqQ  
public class ImprovedQuickSort implements SortUtil.Sort { #Muh|P]%\  
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private static int MAX_STACK_SIZE=4096; J"S(GL  
private static int THRESHOLD=10; wKpb%3  
/* (non-Javadoc) KiFTj$w,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }	7:T?
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*/ AEx	VKy  
public void sort(int[] data) { 0Ntvd7"`}  
int[] stack=new int[MAX_STACK_SIZE]; l1`r%9gr  
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int top=-1; h{zb)'R  
int pivot; $;$vcV9*  
int pivotIndex,l,r; jAcKSx$}y"  
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stack[++top]=0; 1M_Vhs^  
stack[++top]=data.length-1; yJ]Va $M  
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while(top>0){ V
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int j=stack[top--]; 3b#L*-  
int i=stack[top--]; ;ThFB  
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pivotIndex=(i+j)/2; {98e_z w  
pivot=data[pivotIndex]; O0
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SortUtil.swap(data,pivotIndex,j); bYpeI(zK  
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file://partition tux0}|[^'  
l=i-1; T%FW|jKw  
r=j; (C
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do{ XHdhSFpm  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Ahba1\,N$  
SortUtil.swap(data,l,r); Bxw(pACf  
} Y-st2r[,  
while(l SortUtil.swap(data,l,r); zkqn>
  
SortUtil.swap(data,l,j); 4W49*Je  
 ~#P]NWW%.  
if((l-i)>THRESHOLD){ fI<d&5&g  
stack[++top]=i; ^A=tk!C  
stack[++top]=l-1; T>b"Gj/  
} f}*:wj  
if((j-l)>THRESHOLD){ Ndb7>"W  
stack[++top]=l+1; '3sySsD&O  
stack[++top]=j; $%'3w~h`  
} 9;\mq'v%  
 wD$UShnm9-  
} E8R;S}PA  
file://new InsertSort().sort(data); S-3hLw&?  
insertSort(data); RjgJIVm(  
} ":s_O.  
/** WcM\4q@  
* @param data >KdV]!H  
*/ X's<+hK&  
private void insertSort(int[] data) { #pK"
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int temp; u^JsKG+,:  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); YHu]\'Ff  
} goF87^M  
}  n{etDO  
} q{B?j%.o  
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} f{[0;qDJ  
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归并排序: R?9x!@BV  
 hOj+z?  
package org.rut.util.algorithm.support; f^"pZS  
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import org.rut.util.algorithm.SortUtil; $)8,dS  
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/** 5U+4vV/*  
* @author treeroot O1t$]k:  
* @since 2006-2-2 kcg\f@d$  
* @version 1.0 `=,emP&(H&  
*/ M;OMsRCVO  
public class MergeSort implements SortUtil.Sort{ s/C'f4  
 LGW_7&0<<  
/* (non-Javadoc) <m1v+cnqo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -MTYtw(  
*/ Kr|.I2?"  
public void sort(int[] data) { ^[Ka+E^Q  
int[] temp=new int[data.length]; 	O&|<2Qr  
mergeSort(data,temp,0,data.length-1); -<5{wQE;|  
} GQCdB>  
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private void mergeSort(int[] data,int[] temp,int l,int r){ d(ypFd9z  
int mid=(l+r)/2; T{f$S  
if(l==r) return ; Qe	ip h  
mergeSort(data,temp,l,mid); J,u-)9yBA<  
mergeSort(data,temp,mid+1,r); 2u!&Te(!9  
for(int i=l;i<=r;i++){ !d!u{1Y&  
temp=data; yzzJKucVU:  
} qnj'*]ysBC  
int i1=l; |rZMcl/  
int i2=mid+1; LfFXYX^  
for(int cur=l;cur<=r;cur++){ oo7}Hg>  
if(i1==mid+1) xY!ud)  
data[cur]=temp[i2++]; Nf3UVK8LtS  
else if(i2>r) s<k2vbhI  
data[cur]=temp[i1++]; vPz7*w  
else if(temp[i1] data[cur]=temp[i1++]; -rm[.  
else bGgpPV  
data[cur]=temp[i2++];  PRTjXq6)5  
} uZ-ZZE	C  
} 
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} m}=E$zPbO  
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改进后的归并排序: 9jEH"`qqk  
 L*A-&9.p3  
package org.rut.util.algorithm.support; 0*rD'?)K+  
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