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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。 !_cg\K U#  
插入排序: 65aK2MS@  
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package org.rut.util.algorithm.support; l.NEkAYPmH  
xM&Wgei]10  
import org.rut.util.algorithm.SortUtil; T"DlT/\  
/** ^8AXxE  
* @author treeroot 428>BQA  
* @since 2006-2-2 |='z{WS  
* @version 1.0 z-.+x3&o @  
*/ 6U R2IxbE  
public class InsertSort implements SortUtil.Sort{ [c|]f_ZdK  
&b fA.& `  
/* (non-Javadoc) Pf\D-1gi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m4l& eEp  
*/ K#=*9S  
public void sort(int[] data) { Tw;3_Lj  
int temp; ([m mPyp>L  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9#MBaO8_"  
} KQg]0y d  
} <BMXCk  
} )6D,d5<  
:i. {  
} Wg<(ms dj  
h_+dT  
冒泡排序: vRH d&0  
e3nYbWBy]  
package org.rut.util.algorithm.support; P>NF.B Cq  
[k;\SXDZo  
import org.rut.util.algorithm.SortUtil; w"cZHm  
:lPb.UCY  
/** n T{3o;A  
* @author treeroot Ne[7gxpu  
* @since 2006-2-2 < v@9#c  
* @version 1.0 BlA_.]Sg$  
*/ xgKdMW'%g:  
public class BubbleSort implements SortUtil.Sort{ Z:sg}  
YH\OFg@7  
/* (non-Javadoc) :?g:~+hfO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $',K7%y  
*/ x"gd8j]s  
public void sort(int[] data) { %B5wH_p  
int temp; }:KEj_~.  
for(int i=0;i for(int j=data.length-1;j>i;j--){ b2OQtSr a  
if(data[j] SortUtil.swap(data,j,j-1); =IQ5<;U3  
} lE&&_INHQ  
} AK*LyR?  
} GycSwQ ,  
} 3@M|m<_R$  
{ + Zd*)M[  
} hp5|@  
2Q/4bJpd  
选择排序: mUdOX7$c>  
QSszn`e  
package org.rut.util.algorithm.support; $ us]35Z3  
!O:y@  
import org.rut.util.algorithm.SortUtil; O$&mFL[`  
FrL]^59a  
/** ToXki,  
* @author treeroot ^h ~x)@=  
* @since 2006-2-2 di6QVRj1  
* @version 1.0 S||}nJ0  
*/ MHX?@. v  
public class SelectionSort implements SortUtil.Sort { jY% na HaI  
X.f>'0i  
/* ][9%Kl*%@p  
* (non-Javadoc) {f2S/$q  
* lyy W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =u2l. CX  
*/ bzuEfFaL  
public void sort(int[] data) { *E/`KUG]  
int temp; D6>2s\:>vp  
for (int i = 0; i < data.length; i++) { t>urc  
int lowIndex = i; ;*:]*|bw  
for (int j = data.length - 1; j > i; j--) { p?) ;eJtV/  
if (data[j] < data[lowIndex]) { Mn2QZp4  
lowIndex = j; )4gJd? 8R  
} pb ~u E  
} [y'f|XN  
SortUtil.swap(data,i,lowIndex); 5q;GIw^L  
} T>x&T9  
} 7=TF.TW)  
AX;8^6.F3  
} zr+zhpp  
JEahGzO  
Shell排序: ;#xmQi'`  
"$ Y_UJT7  
package org.rut.util.algorithm.support; U(Nu%  
w)kNkD  
import org.rut.util.algorithm.SortUtil; Y^8C)p9r  
@SJL\{_  
/** -:2$ %  
* @author treeroot ko.(pb@+  
* @since 2006-2-2 uxtWybv  
* @version 1.0 s+,OxRVw(  
*/ Rz bj  
public class ShellSort implements SortUtil.Sort{ 2N~Fg^xB  
!;i`PPRwk  
/* (non-Javadoc) lef2X1w}!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5R@  
*/ )6,de2Pb  
public void sort(int[] data) { ^?0DP >XA  
for(int i=data.length/2;i>2;i/=2){ 3L833zL  
for(int j=0;j insertSort(data,j,i); zLD0RBj7p  
} # {w9s 0:  
} }.3nthgz  
insertSort(data,0,1); hU`wVy  
} sYe?M,  
s }UjGFP  
/** x(hE3S#+  
* @param data Mr;E<Lj ^K  
* @param j (qqOjz   
* @param i *5vV6][  
*/ S{PJUAu  
private void insertSort(int[] data, int start, int inc) { rR9|6l 3  
int temp; C8[&S&<_<  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); T&%ux=Jt  
} ^B(V4-|  
} y4t7`-,~  
} S4^vpY DeN  
bvv|;6  
} $FlW1E j  
@ zs'Y8  
快速排序: LQ(yScA@  
*AoR==:ya  
package org.rut.util.algorithm.support; X%Z{K-  
P|.]DJ  
import org.rut.util.algorithm.SortUtil; i`Q KH  
uJFdbBDSh  
/** 0~ZFv Wv  
* @author treeroot $ et0s;GBv  
* @since 2006-2-2 KNS.Nw7  
* @version 1.0 :n0vQ5a  
*/ JRSSn]pw  
public class QuickSort implements SortUtil.Sort{ dRj|g  
.q%WuQw  
/* (non-Javadoc) giZP.C"0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lV1G<qP  
*/ )Y2{_ bx4"  
public void sort(int[] data) { Cnbz=z  
quickSort(data,0,data.length-1); ^cczJOxB  
} "}pNe"ok  
private void quickSort(int[] data,int i,int j){ 4a'N>eDR  
int pivotIndex=(i+j)/2; 62O.?Ij  
file://swap k.uMp<)D  
SortUtil.swap(data,pivotIndex,j); 7NDr1Z#B6V  
5]n[]FW  
int k=partition(data,i-1,j,data[j]); 9cf:pXMi  
SortUtil.swap(data,k,j); AWP"b?^G|  
if((k-i)>1) quickSort(data,i,k-1); .WPV dwV4U  
if((j-k)>1) quickSort(data,k+1,j); ( M7pT  
H *[_cqnv  
} |&FkksNAl\  
/** ~~v3p>zRr  
* @param data W#KpPDgZE  
* @param i 8-BflejX  
* @param j +)y^ 'Qs  
* @return !P)O(i=  
*/ +6';1Nb@  
private int partition(int[] data, int l, int r,int pivot) { A9wh(P0\  
do{ }o L'8-y  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 5[A@ gw0u  
SortUtil.swap(data,l,r); K{[%7AM  
} c2&q*]?l;  
while(l SortUtil.swap(data,l,r); poToeagZ~Q  
return l; ;~"FLQg@  
} }UWL-TkEjF  
%@.v2 cT  
} z"0I>gl  
B5X(ykaX~  
改进后的快速排序: Cq%IE^g<  
1XD,uoxB  
package org.rut.util.algorithm.support; m06ALD_  
fZ*+2T>  
import org.rut.util.algorithm.SortUtil; }[ 4r4 1[  
7PtN?;rP  
/** F;+|sMrq  
* @author treeroot 3+@<lVew6  
* @since 2006-2-2 P*I}yPeb  
* @version 1.0 jV4\A  
*/ =~=*&I4Dp  
public class ImprovedQuickSort implements SortUtil.Sort { y~F,0"N\r  
22.8PO0  
private static int MAX_STACK_SIZE=4096; Y*H|?uNF  
private static int THRESHOLD=10; K%^V?NP*{Z  
/* (non-Javadoc) maXG:l|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,M^P!  
*/ A1.7 O  
public void sort(int[] data) { UE$UR#T'w  
int[] stack=new int[MAX_STACK_SIZE]; {= F /C,-  
{\c(ls{  
int top=-1; .=X}cJ]`[  
int pivot; /f|X(docI  
int pivotIndex,l,r; x "^Xj]-  
a{ ?`t|  
stack[++top]=0; C/TF-g-_Y  
stack[++top]=data.length-1; %Ti}CwI`  
SjwyLc  
while(top>0){ G>1eFBh }  
int j=stack[top--]; cm&I* 0\  
int i=stack[top--]; 9J9)AV  
p2DrEId  
pivotIndex=(i+j)/2; iZaI_\"__  
pivot=data[pivotIndex]; ?e,pN,4  
N4L|;?  
SortUtil.swap(data,pivotIndex,j); 6^%68N1k  
>(?9?  
file://partition l}] t~!X=  
l=i-1; DGAX3N;r6{  
r=j; &?*V0luP)  
do{ n&-qaoNl  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); %we u 1f  
SortUtil.swap(data,l,r); $!8-? ?ML  
} V&Xe!S  
while(l SortUtil.swap(data,l,r); m0cP(  
SortUtil.swap(data,l,j); d*~ ICir7  
f"u%J/e&  
if((l-i)>THRESHOLD){ ?sMP~RHQ  
stack[++top]=i; \Dd-Xn_b  
stack[++top]=l-1; DsT>3  
} )0Me?BRp  
if((j-l)>THRESHOLD){ V??dYB(  
stack[++top]=l+1; O'W0q;rT  
stack[++top]=j; *T~Ve;3h;  
} IGtl\b=  
/XhIx\40 l  
} r9 !Tug*>m  
file://new InsertSort().sort(data); F@<CsgKB-  
insertSort(data); TJ1+g \  
} Ee3hG2d`  
/** p TeOW9  
* @param data @ ]/AjjLt  
*/ m<0&~rg   
private void insertSort(int[] data) { }w1~K'ck}>  
int temp; _ B 5gR  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *7h!w!LN~  
} Q)LM-ZJKQ  
} nSkPM 5\TI  
} Oh'Y0_oB>  
lhw ,J]0*  
} hrhb!0  
ui@2s;1t  
归并排序: Hrzf'a|^  
rwG CUo6Z  
package org.rut.util.algorithm.support; #:^YI c  
U )l,'y2  
import org.rut.util.algorithm.SortUtil; e}.^Tiwd]  
JM\m)RH0  
/** j'BMAn ?  
* @author treeroot 9M1d%jT  
* @since 2006-2-2 )I$q5%q8  
* @version 1.0 bf!M#QOk?  
*/ ltD37QZQ  
public class MergeSort implements SortUtil.Sort{ <F.Tx$s  
61j I  
/* (non-Javadoc) 2w-51tqm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {FG|\nPw  
*/ stk9Ah  
public void sort(int[] data) { ^4`Px/&  
int[] temp=new int[data.length]; &ZX{R#[L  
mergeSort(data,temp,0,data.length-1); YI.w-K\  
} E4W zU  
_dJ{j   
private void mergeSort(int[] data,int[] temp,int l,int r){ &g~ wS@  
int mid=(l+r)/2; lME)?LOI  
if(l==r) return ; `p7&> BOA  
mergeSort(data,temp,l,mid); p$x{yz3  
mergeSort(data,temp,mid+1,r); rJ!{/3e  
for(int i=l;i<=r;i++){ BZXUwqEh  
temp=data; e4z1`YLsG  
} (Gw,2 -A  
int i1=l; P7x =  
int i2=mid+1; eU N"w,@y  
for(int cur=l;cur<=r;cur++){ o)[2@fRC(  
if(i1==mid+1) {M?vBg R\B  
data[cur]=temp[i2++]; $8'O  
else if(i2>r) h'$ 9C  
data[cur]=temp[i1++]; "/nNM{^  
else if(temp[i1] data[cur]=temp[i1++]; n9\]S7] 52  
else S>0nx ^P  
data[cur]=temp[i2++]; @j4U^"_QB  
} RJON90,J  
} bug Ot7  
D Kw*~0  
} !xKJE:4/,m  
5 XA=G  
改进后的归并排序: ?^EXTU85`"  
`WOYoec   
package org.rut.util.algorithm.support; *\o/q[  
U7DCx=B  
import org.rut.util.algorithm.SortUtil; [M%9_CfZOy  
nxJee=qH  
/** ee/&/Gt  
* @author treeroot bLnrbid  
* @since 2006-2-2 zP;cTF(C  
* @version 1.0 hG_?8:W8HT  
*/ Na\WZSu'"  
public class ImprovedMergeSort implements SortUtil.Sort { "aFhkPdWn  
@y/wEBb  
private static final int THRESHOLD = 10; 5&f{1M6l>  
Jz!Z2c  
/* %,iIpYx  
* (non-Javadoc) :Yj) CGl$  
* KHDZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i#%a-I:M  
*/ tdF9NFMD  
public void sort(int[] data) { U5]pi+r  
int[] temp=new int[data.length]; gBf4's  
mergeSort(data,temp,0,data.length-1); 4TwQO$C  
} $j 5,%\4<  
j2P n<0U  
private void mergeSort(int[] data, int[] temp, int l, int r) { oQ7]= |  
int i, j, k; %G@5!|J  
int mid = (l + r) / 2; b`_w])Y@  
if (l == r) 6UE(f@  
return; s:Akk kF  
if ((mid - l) >= THRESHOLD) (#oycj^<  
mergeSort(data, temp, l, mid); ?QA\G6i4  
else 8:.nEo'  
insertSort(data, l, mid - l + 1); vLO&Lpv  
if ((r - mid) > THRESHOLD) CWO=0_>2  
mergeSort(data, temp, mid + 1, r); ==cd>03()  
else hGf-q?7  
insertSort(data, mid + 1, r - mid); `E\imL  
b59{)u4F  
for (i = l; i <= mid; i++) { Y&2aO1  
temp = data; ~^vC,]hU  
} G5tday~3  
for (j = 1; j <= r - mid; j++) { 5=KF!?  
temp[r - j + 1] = data[j + mid]; AA:no=  
} YGsS4ia*4i  
int a = temp[l]; `Vq`z]}  
int b = temp[r]; +3,|"g::  
for (i = l, j = r, k = l; k <= r; k++) { Z7jX9e"L  
if (a < b) { {?{U,&  
data[k] = temp[i++]; /dDzZ%/@  
a = temp; y@wF_WX2  
} else { hFvi 5I-b  
data[k] = temp[j--]; ,kgF2K!  
b = temp[j]; cywg[  
} 1'G8o=~  
} &!35/:~uD  
} s T3p>8n  
NfE.N&vI_c  
/** [$ :  
* @param data 4%*hGh=  
* @param l 2:$ k  
* @param i TD04/ ISHT  
*/ K%}}fw2RMN  
private void insertSort(int[] data, int start, int len) { Q1>zg,r  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); %d: A`7x  
} _eLVBG35z  
} R#4 ^s  
} he )ulB  
} ~_!ts{[E  
SvK1.NUa  
堆排序: r9ke,7?  
hbuZaxo<  
package org.rut.util.algorithm.support; 4Y tk!oS`  
dm R3Y.\jd  
import org.rut.util.algorithm.SortUtil; t ,qul4y}  
b"8FlZ$  
/** lv:U%+A  
* @author treeroot 6CNS%\A  
* @since 2006-2-2 =8{*@>CX  
* @version 1.0 g=A$<k  
*/ b?kPN:U#N/  
public class HeapSort implements SortUtil.Sort{ *kaJ*Ti-/  
Sb^ b)q"  
/* (non-Javadoc) L2U x9_S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $cK^23H/Fj  
*/ v`)m">e*w  
public void sort(int[] data) { N4[E~ -  
MaxHeap h=new MaxHeap(); =aow d4 t  
h.init(data); 5_G'68;OV  
for(int i=0;i h.remove(); =|y|P80w  
System.arraycopy(h.queue,1,data,0,data.length); fkW(Dt,  
} Mn"/#tXL-  
*d l"wH&  
private static class MaxHeap{  3t  
N^B@3QF  
void init(int[] data){ ^`&HWp  
this.queue=new int[data.length+1]; ",Wf uz  
for(int i=0;i queue[++size]=data; R^9"N?Q7;`  
fixUp(size); w67x l  
} md6*c./Z  
} Tcs3>lJ}   
N&B>#:  
private int size=0; +-HE '4mo  
Za\RM[Z!I  
private int[] queue; ~'f8L #[M  
Ck(.N  
public int get() { mcMb*?]  
return queue[1]; J%4HNW*p  
} 4GTrI@}3  
a97Csxf;7  
public void remove() { !?r/ 4  
SortUtil.swap(queue,1,size--); 7Jc<.Z"/Gd  
fixDown(1); -eYL*Pa  
} Fhi5LhWe+.  
file://fixdown x=3I)}J(kn  
private void fixDown(int k) { 8g5.7{ky  
int j; {Vl"m 2  
while ((j = k << 1) <= size) { 7+S44)w}~  
if (j < size %26amp;%26amp; queue[j] j++; ;5RIwD  
if (queue[k]>queue[j]) file://不用交换 q+J0}y{#8)  
break; aZ/yCS7  
SortUtil.swap(queue,j,k); 2e\Kw+(>{  
k = j; gDc]^K4>  
} #x|VfN5f  
} 1?]J;9p  
private void fixUp(int k) { |bvGYsn_#=  
while (k > 1) { }u7D9_KU  
int j = k >> 1; -~]^5aa5n  
if (queue[j]>queue[k]) Dzm qR0)  
break; @_uFX!;  
SortUtil.swap(queue,j,k); "{6KZ!+0  
k = j; "D!Dr1  
} xx}'l:}2 ]  
} 4= $!_,.  
~{Ua92zV9  
} !z.^(Tj  
^1vq{/ X  
} }(rzH}X@  
6%z`)d  
SortUtil: '&{(:,!B  
kz|[*%10  
package org.rut.util.algorithm; aEZJNWv  
b__n~\q_  
import org.rut.util.algorithm.support.BubbleSort; I$F\(]"@  
import org.rut.util.algorithm.support.HeapSort; s!=!A  
import org.rut.util.algorithm.support.ImprovedMergeSort; @]yQJuXA&Z  
import org.rut.util.algorithm.support.ImprovedQuickSort; 1(D1}fcul  
import org.rut.util.algorithm.support.InsertSort; 5Wj5IS/  
import org.rut.util.algorithm.support.MergeSort; 7~ILRj5Nq  
import org.rut.util.algorithm.support.QuickSort; Q,O]x#  
import org.rut.util.algorithm.support.SelectionSort; d OzO/w&  
import org.rut.util.algorithm.support.ShellSort; J~:kuf21  
:hi$}xHa  
/** -1#e^9Ve\  
* @author treeroot d!FONi  
* @since 2006-2-2 rHR5,N:  
* @version 1.0 /}[zA@  
*/ 6pS Rum  
public class SortUtil { WJP`0f3  
public final static int INSERT = 1; yFa&GxSq  
public final static int BUBBLE = 2; Y&~5k;>'_  
public final static int SELECTION = 3; s-y'<(ll  
public final static int SHELL = 4; <`^>bv9  
public final static int QUICK = 5; ]q@rGD85K  
public final static int IMPROVED_QUICK = 6; vBV"i9n   
public final static int MERGE = 7; N7%=K9  
public final static int IMPROVED_MERGE = 8; (d1V1t2r6  
public final static int HEAP = 9; ok8JnQC  
cC*zj \O  
public static void sort(int[] data) { HP1X\h!Ke  
sort(data, IMPROVED_QUICK); )GQ D*b  
} ,|=iv  
private static String[] name={ tVK?VNW  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" <PH3gyC  
}; 2-/YYe;C  
(2&K (1.Y  
private static Sort[] impl=new Sort[]{ C _ k_D  
new InsertSort(), bt. K<Y0  
new BubbleSort(), +/1P^U /  
new SelectionSort(), KHiYV  
new ShellSort(), .T[!!z#^  
new QuickSort(), V_ avaE  
new ImprovedQuickSort(), 4c9-[KKCV  
new MergeSort(), ?3e!A9x  
new ImprovedMergeSort(), [ 7CH(o1a&  
new HeapSort() gb^UFD L  
};  k,o=1I  
`RL(N4H  
public static String toString(int algorithm){ INeWi=1  
return name[algorithm-1]; RJ7/I/yD|  
} xf{C 'uF/  
A@lhm`Aa  
public static void sort(int[] data, int algorithm) { 1yY'hb,0  
impl[algorithm-1].sort(data); &)/H?S;yN  
} %K/G+  
S(YHwH":  
public static interface Sort { V9);kD  
public void sort(int[] data); (&a3v  
} v f/$`IJ  
} r\SP3  
public static void swap(int[] data, int i, int j) { 8EVF<@{]  
int temp = data; /(z0I.yE  
data = data[j]; '44nk(hM69  
data[j] = temp; 3IRRFIiO  
} t8wz'[z  
} b{ubp  
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