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[JAVA]用Java实现的各种排序

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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。 M= ]]kJ:I  
插入排序: &x mYpQ  
G=VbEL^H  
package org.rut.util.algorithm.support; >du _/*8:  
\>7hT;Av=G  
import org.rut.util.algorithm.SortUtil; hRc.^"q9  
/** )8,)&F  
* @author treeroot Sd9%tO9mf  
* @since 2006-2-2 :c?}~a~JO(  
* @version 1.0 U%PII>s'#  
*/ ~#]$YoQ&O  
public class InsertSort implements SortUtil.Sort{ 3Yb2p!o  
ZH s' #  
/* (non-Javadoc) <T^:`p/]4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s/+k[9l2  
*/ E0lro+'lS  
public void sort(int[] data) { bMCy=5  
int temp; ^Gt9.  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); n !oxwA!  
} Cg]Iz< <bE  
}  MYk%p'  
} Nn:>c<[  
:~PzTUz  
} cD5^mxd%  
|to|kU  
冒泡排序: I_aS C4  
j34L*?  
package org.rut.util.algorithm.support; \v,m r|  
%=PGvu  
import org.rut.util.algorithm.SortUtil; f 8AgTw,K8  
4k6,pt"  
/** [BLBxSL  
* @author treeroot ]+)cXJ}6#  
* @since 2006-2-2 .I1k+   
* @version 1.0 z>&|:VGG  
*/ 7O \sQ]i6  
public class BubbleSort implements SortUtil.Sort{ m Bc2x8g)  
m|8ljXX  
/* (non-Javadoc) 2y;J 11\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m1\+~*i  
*/ ;Q{~jT  
public void sort(int[] data) { I5$]{:L|9  
int temp; Ojwhcb^  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Osj/={7g  
if(data[j] SortUtil.swap(data,j,j-1); ^?Y x{r~9  
} FVo_=O)  
} (Z)F6sZ`8  
} 2$@N4  
} H6Dw5vG"l  
9~lC/I')t  
} 2sXNVo8`w"  
uB*Y}"Fn  
选择排序: ),%(A~\  
S +mM S  
package org.rut.util.algorithm.support; P)k!#*  
*y@Xm~ld  
import org.rut.util.algorithm.SortUtil; sSdnH_;&  
84|oqwZO  
/** 3mCf>qj73  
* @author treeroot C\RJ){dk  
* @since 2006-2-2 '0MH-M  
* @version 1.0 Kc,=J?Ob  
*/ i p"LoCE  
public class SelectionSort implements SortUtil.Sort { {g@?\  
wusj;v4C4M  
/* dPx{9Y<FzU  
* (non-Javadoc) PQJI~u9te}  
* ='U>P( R-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 56JvF*hP  
*/ G Ch]5\  
public void sort(int[] data) { ,+mH1#-3  
int temp; by0@G"AE+  
for (int i = 0; i < data.length; i++) { #l<un<  
int lowIndex = i; 9irT}e  
for (int j = data.length - 1; j > i; j--) {  tOEY|  
if (data[j] < data[lowIndex]) { \])-Bp ,  
lowIndex = j; ob(S/t  
} +jifbf-  
} f*HEw  
SortUtil.swap(data,i,lowIndex); WA1h|:Z  
} i7#PYt  
} :IB@@5r1  
O% }EpIP_  
} k  __MYb  
NB@TyU  
Shell排序: ROWrkJI>i  
E{B8+T:3  
package org.rut.util.algorithm.support; _=*ph0nu  
O_bgrXg6x  
import org.rut.util.algorithm.SortUtil; Dqz9NB  
`COnb@uD  
/** ]@G$ L,3  
* @author treeroot a*GiLq  
* @since 2006-2-2 )h>H}wDs  
* @version 1.0 )i$:iI >k  
*/ QswbIP/>:'  
public class ShellSort implements SortUtil.Sort{ Lo-\;%y  
=e j'5m($3  
/* (non-Javadoc) _O w]kP='  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (t%+Z"j  
*/ F&[MyXU4  
public void sort(int[] data) { 3~5 %6`  
for(int i=data.length/2;i>2;i/=2){ N{<9N jmm  
for(int j=0;j insertSort(data,j,i); \fjr`t]  
} -Rcl(Q}LZ  
} 3l?-H|T  
insertSort(data,0,1); A KjCm*K(q  
} DM[gjfMXu  
^.:dT?@R  
/** sQ05wAv  
* @param data .CY;-  
* @param j &E+2  
* @param i pGHn   
*/ L32[IL|  
private void insertSort(int[] data, int start, int inc) { >^|( AzS  
int temp; AhauNS^"{R  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); [/'=M h  
} {CH *?|t  
} l+n0=^ Z  
} EDAVU  
y%NZ(Y,v  
} ~P@6f K/M  
@+EO3-X5  
快速排序: @9ndr$t  
*<rBV`AP  
package org.rut.util.algorithm.support; n `Ry!  
O\=c&n~`  
import org.rut.util.algorithm.SortUtil; g*a|QBj%  
cE SSSH!m  
/** ckCb)r_  
* @author treeroot oe,37xa4  
* @since 2006-2-2 2Ysl|xRo  
* @version 1.0 ZBcT@hxm  
*/ yD\[`!sWk  
public class QuickSort implements SortUtil.Sort{ VHlo}Ek<#  
2 ,bLEhu  
/* (non-Javadoc) XI8rU)q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]%I}hj J  
*/ Oqy&V&-C  
public void sort(int[] data) { eABLBsx  
quickSort(data,0,data.length-1); ^}\!Sn  
} rh+2 7"  
private void quickSort(int[] data,int i,int j){ L,PD4H"8  
int pivotIndex=(i+j)/2; jJU9~5i?  
file://swap l$mfsm|{:  
SortUtil.swap(data,pivotIndex,j); SIr^\iiOB  
) HPe}(ypt  
int k=partition(data,i-1,j,data[j]); Y-vLEIX=  
SortUtil.swap(data,k,j); L kA_M'G  
if((k-i)>1) quickSort(data,i,k-1); QT[yw6Z  
if((j-k)>1) quickSort(data,k+1,j); cq-UVk"Gl  
:^92B?q  
} G zw $M  
/** v==]v2 -  
* @param data <-avC/M$d  
* @param i h|Os T  
* @param j v5Qp[O_  
* @return WK)2/$7@  
*/ v$_YZm{!<  
private int partition(int[] data, int l, int r,int pivot) { :^H#i:4  
do{ c(5r  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); RV{'[8gM   
SortUtil.swap(data,l,r); n(.U>_ P  
} !GL kAV  
while(l SortUtil.swap(data,l,r); n$z+g>~N  
return l; t;2\(_A  
} QO|roE  
lf?dTPrD  
} //W7$DYEG  
-w#*~Q{'*  
改进后的快速排序: 8n`O{8:fi  
Bk)*Z/1<x  
package org.rut.util.algorithm.support; [<H'JsJl  
|^!  
import org.rut.util.algorithm.SortUtil; y)%CNH)*x  
Okt0b|=`1*  
/** }_vUsjK  
* @author treeroot ;{%R'  
* @since 2006-2-2 ^_C]?D?  
* @version 1.0 IA&NMf;{  
*/ 0S}ogU[k  
public class ImprovedQuickSort implements SortUtil.Sort { /rQ[Ik$|  
\ =(r6X  
private static int MAX_STACK_SIZE=4096; zFpM\{`[g  
private static int THRESHOLD=10; G:k]tZ*`  
/* (non-Javadoc) ugT;NB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $ &III  
*/ {P[>B}'rW  
public void sort(int[] data) { hI Q 2s  
int[] stack=new int[MAX_STACK_SIZE]; -Nn@c|fz  
$wq[W,'#L  
int top=-1; 34e> R?J  
int pivot; E!_mXjlPc  
int pivotIndex,l,r; +T|M U  
>3\($<YDZM  
stack[++top]=0; vC1D}=Fp  
stack[++top]=data.length-1; pY T^Ug  
C 7e  
while(top>0){ |:jka  
int j=stack[top--]; Rx\.x? &  
int i=stack[top--]; 7%x 3o#&  
GiH<6<=  
pivotIndex=(i+j)/2; F )|0U~  
pivot=data[pivotIndex]; (^)" qs B  
B<}0r 4T}  
SortUtil.swap(data,pivotIndex,j); ,KO_h{mI<  
+&j&es  
file://partition [h;&r"1  
l=i-1; #MwNyZ  
r=j; 6Uik>e7?  
do{ njoU0f1`  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); EqB3f_  
SortUtil.swap(data,l,r); G{C27k>wa  
} S, g/2k*  
while(l SortUtil.swap(data,l,r); hynX5,p;.  
SortUtil.swap(data,l,j); dd=' ;%?  
G,]%dZH e  
if((l-i)>THRESHOLD){ WBIJ9e2~  
stack[++top]=i; Rfuq(DwD6  
stack[++top]=l-1; f5p:o}U*  
} wE*jN~  
if((j-l)>THRESHOLD){ ;3 |Z}P  
stack[++top]=l+1; "B 9aJo  
stack[++top]=j; l{u2W$8  
} 3\~ RWoB0u  
ud}B#{6  
} !rwe|"8m?u  
file://new InsertSort().sort(data); &y~EEh|  
insertSort(data); C~PoC'"q  
} b{WEux{)  
/** s'Op|`&X  
* @param data ]`S35b  
*/ 7 g2@RKo  
private void insertSort(int[] data) { tOQura  
int temp; |}YeQl  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2wKW17wj,  
} b7nER]R  
} &F xw19[G  
} 'c")]{  
_ h7qS  
} e.<y-b?  
6gSo>F4=  
归并排序: $: %U`46%s  
Ln2dD>{2  
package org.rut.util.algorithm.support; O5;$cP:  
luYa+E0  
import org.rut.util.algorithm.SortUtil; LBs:O*;  
afJ`1l  
/** rEl bzL"&<  
* @author treeroot @m bR I0  
* @since 2006-2-2 2:>|zmh_  
* @version 1.0 xbeVq P  
*/ B"9/+Yj  
public class MergeSort implements SortUtil.Sort{ 5qx,b&^w  
AnUOv 2  
/* (non-Javadoc) ,*Vt53@E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q:/BC= ~  
*/ F N)vFQ#J  
public void sort(int[] data) { kq m$a  
int[] temp=new int[data.length]; 5/m^9@A  
mergeSort(data,temp,0,data.length-1); k&kx%skz  
} uk\-"dS  
Gx.iZOOH/  
private void mergeSort(int[] data,int[] temp,int l,int r){ 9sR?aW^$,/  
int mid=(l+r)/2; mV58&SZT  
if(l==r) return ; 9)Jc'd|  
mergeSort(data,temp,l,mid); HS% P  
mergeSort(data,temp,mid+1,r); k8~/lE.Wy  
for(int i=l;i<=r;i++){ H$j`75#u?-  
temp=data; ) C?emTih  
} :gvw5h%  
int i1=l; p` '8M  
int i2=mid+1; n qR8uL>  
for(int cur=l;cur<=r;cur++){ 5V{ B,T  
if(i1==mid+1) 8,(FJ7OCT,  
data[cur]=temp[i2++]; f Cq  
else if(i2>r) D02_ Jrg  
data[cur]=temp[i1++]; ee9nfvG-  
else if(temp[i1] data[cur]=temp[i1++]; $d[xSwang  
else s?j` _ B  
data[cur]=temp[i2++]; .%iJin"  
} Xw|t.0  
} ~gjREl,+D#  
H /kSFf{  
} T==(Pw7R7  
5,pKv  
改进后的归并排序: Ai 9UB=[R  
6jGPmOM/  
package org.rut.util.algorithm.support; U6R"eQUTV  
D)u 9Y  
import org.rut.util.algorithm.SortUtil; QnWM<6xK"  
<`~zKFUQ[  
/** b.<>CG'  
* @author treeroot ns{BU->f  
* @since 2006-2-2 ) ag8]   
* @version 1.0 pX nY=  
*/ #DL( %=:  
public class ImprovedMergeSort implements SortUtil.Sort { 6@2 S*\&  
2`-yzm  
private static final int THRESHOLD = 10; Xg](V.B6  
1 >nl ]yO  
/* gx*rxid  
* (non-Javadoc) G O=&  
* L;n2,b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J:{$\m'  
*/ S @EkrC\4n  
public void sort(int[] data) { .>K):|Opv  
int[] temp=new int[data.length]; m _0D^e7#  
mergeSort(data,temp,0,data.length-1); v0ng M)^q  
} b0~AN#Es  
S;582H9D  
private void mergeSort(int[] data, int[] temp, int l, int r) { k]vrqjn Q  
int i, j, k; I^5T9}>Q  
int mid = (l + r) / 2; ]G0`W6;$]  
if (l == r) YEEgDw]BQ  
return; x}w"2[fL  
if ((mid - l) >= THRESHOLD) '}`|QJ  
mergeSort(data, temp, l, mid); (Oc[j{6q  
else R"au8f.  
insertSort(data, l, mid - l + 1); 2hjR'6h"Y  
if ((r - mid) > THRESHOLD) 1D,$Az~.  
mergeSort(data, temp, mid + 1, r); A1zqm_X5)P  
else HlkG^:)  
insertSort(data, mid + 1, r - mid); 2^Tj@P7  
T@n-^B!Xq  
for (i = l; i <= mid; i++) { 0]F'k8yLN  
temp = data; C3H q&TVf/  
} QFI8|i@  
for (j = 1; j <= r - mid; j++) { ,C#Mf@b  
temp[r - j + 1] = data[j + mid]; x<0-'EF/S  
} G%a8'3d,  
int a = temp[l]; kH!I&4d&  
int b = temp[r]; hLVS}HE2  
for (i = l, j = r, k = l; k <= r; k++) { h48JpZ"  
if (a < b) { [w%MECTe  
data[k] = temp[i++]; 8-N8v *0  
a = temp; RaK fYLw  
} else { Q9lw~"  
data[k] = temp[j--]; %f{1u5+5  
b = temp[j]; /\%K7\  
} Q]';1#J\  
} H$^b.5K  
} 9I a4PPEH1  
+TzF*Np  
/** ?UXKy  
* @param data (l28,\Bel  
* @param l cT8`l!RD<  
* @param i qsB,yckml  
*/ -%&_LE9ZtS  
private void insertSort(int[] data, int start, int len) { -fl?G%:(!0  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); FtUOgL)|  
} &S}i)Nu6J  
} TzXivE@mm  
} [<)/ c>Y  
} )`RF2Y-A7  
`"0#lZ`n  
堆排序: C+r<DC3  
Y",Fs(  
package org.rut.util.algorithm.support; &%~2Wm  
{iP^51fy  
import org.rut.util.algorithm.SortUtil; |~mi6 lJ6  
M DnT  
/** ZQT14.$L  
* @author treeroot m6a q_u{W  
* @since 2006-2-2 +\FTR  
* @version 1.0 5!ll #/ {`  
*/ /B$"fxFf  
public class HeapSort implements SortUtil.Sort{ ckqU2ETpD}  
360V  
/* (non-Javadoc) >EFjyhVE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) / r#.BXP  
*/ sXzxEhp  
public void sort(int[] data) { h1.]Nl C  
MaxHeap h=new MaxHeap(); |x|#n  
h.init(data); Le9^,B@Pb  
for(int i=0;i h.remove(); m*L*# ZBS  
System.arraycopy(h.queue,1,data,0,data.length); *P_ 3A:_  
} r5qp[Ss3F  
NymS8hxR  
private static class MaxHeap{ =J0X{Ovn4z  
x+zz:^yHYf  
void init(int[] data){ esH>NH_  
this.queue=new int[data.length+1]; 'CT 8vt;  
for(int i=0;i queue[++size]=data; ^l#Z*0@><~  
fixUp(size); #vi `2F  
} 5Sd+Cc  
} qp*C%U  
y4aSf2   
private int size=0; + #gJ[Cc  
/I{<]m$  
private int[] queue; %eCbH`  
N"2Ire  
public int get() { JcEPwF.  
return queue[1]; VnUW UIVJ  
} OWsK>egD  
]KfjZ!Qh  
public void remove() {  ?[Od.  
SortUtil.swap(queue,1,size--); $m`?x5rL8  
fixDown(1); ql5NSQ>{  
} "d'D:>z]%  
file://fixdown u8pJjn;  
private void fixDown(int k) { *<n]"-  
int j; G>{Bij44  
while ((j = k << 1) <= size) { xU#f>@v!  
if (j < size %26amp;%26amp; queue[j] j++; 7/lXy3B4  
if (queue[k]>queue[j]) file://不用交换 T:aYv;#0  
break; ~6`HJ  
SortUtil.swap(queue,j,k); !Q!= =*1H  
k = j;  Hu|;cbK  
} {D1"bDZ  
} Ml1sE,BT  
private void fixUp(int k) { <rc?EV  
while (k > 1) { / %}Xiqlrd  
int j = k >> 1; q]3bGO;  
if (queue[j]>queue[k]) 9L;fT5Tp7  
break; C-/<5D j  
SortUtil.swap(queue,j,k); 1BK-uv:  
k = j; ^ZX71-  
} OosxuAC(  
} mG2*s ^$  
1.YDIB||  
} <zE,T@c  
>K$9 (  
} + ^n [B  
m @) ~.E  
SortUtil: s/+@o:  
)(`I1"1   
package org.rut.util.algorithm; X>^St&B}fC  
X4LU/f<f  
import org.rut.util.algorithm.support.BubbleSort; iJE  $3  
import org.rut.util.algorithm.support.HeapSort; V dp wZ  
import org.rut.util.algorithm.support.ImprovedMergeSort; M<oIo 036  
import org.rut.util.algorithm.support.ImprovedQuickSort; ~G.'pyW  
import org.rut.util.algorithm.support.InsertSort; ohqi4Y!j/~  
import org.rut.util.algorithm.support.MergeSort; '`Eb].s*  
import org.rut.util.algorithm.support.QuickSort; ].=&^0cg  
import org.rut.util.algorithm.support.SelectionSort; s86Ij>VLf  
import org.rut.util.algorithm.support.ShellSort; 9 |v3lGK(  
\<WRk4D  
/** iB1"aE3  
* @author treeroot pIBL85Xe  
* @since 2006-2-2 F)'kN2  
* @version 1.0 .6Tan2[%  
*/ H^{Eh  
public class SortUtil { ?|LR@M!S7  
public final static int INSERT = 1; {fe[$KQ  
public final static int BUBBLE = 2; <eP`Lu"  
public final static int SELECTION = 3; 9fr LYJz"  
public final static int SHELL = 4; !t/I j~o  
public final static int QUICK = 5; f QSP]?  
public final static int IMPROVED_QUICK = 6; v< qN -zG  
public final static int MERGE = 7; - Te+{  
public final static int IMPROVED_MERGE = 8; SoX\S|}%6[  
public final static int HEAP = 9; lt\. )Y>4  
F]kn4zr  
public static void sort(int[] data) { z97RNT|Y7U  
sort(data, IMPROVED_QUICK); `R@1Sc<*|  
} Hd H,   
private static String[] name={ YCr:nYm<f  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" gE$D#PZa  
}; xi|T7,\X  
c:(Xk zj  
private static Sort[] impl=new Sort[]{ LUSBRr8  
new InsertSort(), k I  
new BubbleSort(), (/TYET_H  
new SelectionSort(), ]t$wK  
new ShellSort(), ]E/^(T-O  
new QuickSort(), Dy`;]-b6u  
new ImprovedQuickSort(), Lky<L96  
new MergeSort(), ~>v v9-_  
new ImprovedMergeSort(), 57 (bd0@8  
new HeapSort() 7]se!k,  
}; r'!L}^n  
\ vf&Ldk  
public static String toString(int algorithm){ m,YBk<Bx  
return name[algorithm-1]; _p0@1 s(U  
} SVKjhZK  
bzYj`t?  
public static void sort(int[] data, int algorithm) { LY Y3*d  
impl[algorithm-1].sort(data); l*eJa38  
} 3%gn:.9N  
DJ)Q,l*|N9  
public static interface Sort { MvV\?Lzj   
public void sort(int[] data); _Q XC5i  
} h"R{{y f2  
cQM_kV??!  
public static void swap(int[] data, int i, int j) { E6+c{41B  
int temp = data; wD+4#=/j  
data = data[j]; L\;n[,.  
data[j] = temp; "m2g"x a\7  
} ndW]S7  
} _{$eOwB  
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