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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。 ">5$;{;2r  
插入排序: @)wsHW%cjz  
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package org.rut.util.algorithm.support; ;0`IFtz  
r]U8WM3r  
import org.rut.util.algorithm.SortUtil; =&<d4'(Qk  
/** =G !]_d0  
* @author treeroot 13 %: 3W(  
* @since 2006-2-2 UY .-Qt  
* @version 1.0 ,N nh$F  
*/ [NV/*>"j&  
public class InsertSort implements SortUtil.Sort{ 4K 8(H9(  
nFWiS~(#sW  
/* (non-Javadoc) FNw]DJ]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !N!AO(Z  
*/ / <%EKu5  
public void sort(int[] data) { B*9?mcP\  
int temp; <AK9HPxP  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >nvnU`\  
} O<ybiPR  
} T^{=cx9x9  
} aMVq%{U  
0{I-x^FI  
} )1YX+',"  
X4+H8],)  
冒泡排序: LXZI|K[}k  
!R@jbM  
package org.rut.util.algorithm.support; Z{/GT7 /  
5" (FilM  
import org.rut.util.algorithm.SortUtil; i52JY&N  
G(ZEP.h`u  
/** 73nM9  
* @author treeroot =pTTXo  
* @since 2006-2-2 ))nTd=  
* @version 1.0 ,6o tm  
*/ gGN 6Yqj0  
public class BubbleSort implements SortUtil.Sort{ < +k dL  
 Pa?{}A  
/* (non-Javadoc) x 0#u2j?zj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  ;]bW  
*/ BR_fOIDc  
public void sort(int[] data) { Z~}9^(qc  
int temp; ~N7;. 3 7  
for(int i=0;i for(int j=data.length-1;j>i;j--){ `~=NBN=tiL  
if(data[j] SortUtil.swap(data,j,j-1); &0H_W xKeB  
} S]Di1E^r;_  
} 7#Uzz"^  
} [=tIgMmz  
} 'Sesh'2 /  
5:#|Op N  
} }%<_>b\  
j(}pUV B  
选择排序: JT=ax/%Mo  
mx}4iO:Xp  
package org.rut.util.algorithm.support; >_G'o  
ruyQ}b:zS  
import org.rut.util.algorithm.SortUtil; e,Y<$kPV  
* dk(<g=fM  
/** Oi]B%Uxy=  
* @author treeroot HL dHyK/S  
* @since 2006-2-2 iq^;csyKb  
* @version 1.0 atmW? Z  
*/ SoHaGQox  
public class SelectionSort implements SortUtil.Sort { $DtUTh3)  
&FJr?hY%  
/* GV28&!4sS  
* (non-Javadoc) 3+vVdvu%  
* cMoJHC,!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wA)n ryXV  
*/ 2;J\Z=7  
public void sort(int[] data) { ^zS;/%  
int temp; ZU;jz[}  
for (int i = 0; i < data.length; i++) { [hk/Rp7{  
int lowIndex = i; pU[yr'D.r  
for (int j = data.length - 1; j > i; j--) { Mn<s9ITS-  
if (data[j] < data[lowIndex]) { >"|t*k S  
lowIndex = j; RCxwiZaf33  
} >3&V"^r(|  
} DL,]iJm  
SortUtil.swap(data,i,lowIndex); lC,~_Yb  
} c@)?V>oe  
} {MTtj4$  
VZ y$0*  
} x5Fo?E  
9?~6{!m_9  
Shell排序: fny6`_O  
C5$?Y8B3  
package org.rut.util.algorithm.support;  Zy8tI#  
rKd|s7l  
import org.rut.util.algorithm.SortUtil; bd% M.,  
~C>Q+tR8  
/** Dl AwB1Ak  
* @author treeroot !c-MC|  
* @since 2006-2-2 ;Ru[^p.{  
* @version 1.0 mV)t  
*/ a/3'!}&e  
public class ShellSort implements SortUtil.Sort{ O=lRI)6w@e  
5,V*aP  
/* (non-Javadoc) 64`l?F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2V u?Y  
*/ p~""1m01,D  
public void sort(int[] data) { <F"G~.^ *s  
for(int i=data.length/2;i>2;i/=2){ jp@X,HES  
for(int j=0;j insertSort(data,j,i); ]=I2:Rb  
} H\N} 0^ea  
} 1uR@ZK  
insertSort(data,0,1); wL^x9O|`p9  
} 3>73s}3  
 >;%QW  
/** Y9vVi]4  
* @param data VGu(HB8n#  
* @param j  yOvV"x]  
* @param i UvB\kIH  
*/ s*Z yr%R  
private void insertSort(int[] data, int start, int inc) { 4^4T#f2=e  
int temp; Gm=&[?}  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); es\ qnq  
}  w}t}Sh  
} -U?%A:,a|  
} :,j^ei  
zb02\xvf  
} ImH9 F\  
3u^wK  
快速排序: $=^}J 6  
x_?K6[G&}  
package org.rut.util.algorithm.support; X}C8!LA  
U2vb&Qu/  
import org.rut.util.algorithm.SortUtil; a|3+AWL%  
4e; le&  
/** QR8]d1+GV  
* @author treeroot ) hoVB  
* @since 2006-2-2 )J+rt^4|  
* @version 1.0 a>,_o(]cW  
*/ v$(Z}Hg  
public class QuickSort implements SortUtil.Sort{ {)!ua7GF0H  
-49I3&  
/* (non-Javadoc) A=e1uBGA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DW:\6k  
*/ wgvCgr<  
public void sort(int[] data) { MTgf.  
quickSort(data,0,data.length-1); P *PJ  
} Sz')1<  
private void quickSort(int[] data,int i,int j){ *`/4KMrq  
int pivotIndex=(i+j)/2; xcQ^y}JN  
file://swap .W2w/RayC  
SortUtil.swap(data,pivotIndex,j); >qO l1]uF  
Nt?=0X|M  
int k=partition(data,i-1,j,data[j]); ;4/ n~  
SortUtil.swap(data,k,j); HJpx,NU'  
if((k-i)>1) quickSort(data,i,k-1); erTly2-SJ  
if((j-k)>1) quickSort(data,k+1,j); (I>SqM Y  
-O/[c  
} aM,g@'.=  
/** iXXaB +w  
* @param data bu \(KR$s  
* @param i <8Zs; >YuK  
* @param j =T?Xph{  
* @return rd[mC[ r  
*/ {CVZ7tU7]  
private int partition(int[] data, int l, int r,int pivot) { v{*2F  
do{ > #9 a&O  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 0%IZ -])  
SortUtil.swap(data,l,r); Zc&pJP+M'U  
} Yc3\  
while(l SortUtil.swap(data,l,r); !A|}_K1Cr  
return l; L/vw7XNrX  
} q9InO]s&~=  
K!E\v4  
} QAY:H@Gt:  
F%%mcmHD#  
改进后的快速排序: q%/.+g2-\  
I!K-* AB  
package org.rut.util.algorithm.support; ;4v`FC>  
\lDh"  
import org.rut.util.algorithm.SortUtil; gssEdJ  
9j5Z!Vsy  
/** ~52'iI)Mw  
* @author treeroot ozHL'H  
* @since 2006-2-2 r]~]-VZ/  
* @version 1.0 ^HI2Vp  
*/ YuzVh9jTI  
public class ImprovedQuickSort implements SortUtil.Sort { :inVwc  
nI+.De~  
private static int MAX_STACK_SIZE=4096; ^ ~Tn[w W_  
private static int THRESHOLD=10;  Sb)}  
/* (non-Javadoc) %)&Tr`   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j``Ku@/x0  
*/ ;MlPP)*k  
public void sort(int[] data) { a^O>i#i  
int[] stack=new int[MAX_STACK_SIZE]; cN\_1  
F6h IG G  
int top=-1; } R hSt]  
int pivot; %S>6Q^B  
int pivotIndex,l,r; ~)ysEZl  
L,,*8  
stack[++top]=0; 5.kKg=a  
stack[++top]=data.length-1; -7 Kstc-  
7|!Zx-}  
while(top>0){ 4>N ig.#   
int j=stack[top--]; ``rYzj_  
int i=stack[top--]; dLR[<@E  
Ch~y;C&e+r  
pivotIndex=(i+j)/2; ( "<4Ry.u  
pivot=data[pivotIndex]; IiX2O(*ZE  
#wh[F"zX  
SortUtil.swap(data,pivotIndex,j); RE]*fRe7#  
OE}c$!@  
file://partition )}i2x:\|_  
l=i-1; m?;/H  
r=j; =65XT^  
do{ -KqMSf&9  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); N Zwi3  
SortUtil.swap(data,l,r); (^<skx>  
} D8$4PT0u  
while(l SortUtil.swap(data,l,r); T@n};,SQ  
SortUtil.swap(data,l,j); Ffd;aZ4n  
`vf]C'  
if((l-i)>THRESHOLD){ 1{qG?1<zZ6  
stack[++top]=i; yv$hIU2X  
stack[++top]=l-1; y+Bxe )6^V  
} )31xl6@  
if((j-l)>THRESHOLD){ =:H EF;!  
stack[++top]=l+1; Go[anf  
stack[++top]=j; >aCY  
} A[:(#iR5-E  
 ]l  
} ;9vY5CxzC  
file://new InsertSort().sort(data); S*WLb/R2  
insertSort(data); QS-X_  
} CUaL  
/** jRW@$ <mG  
* @param data ^<j =.E  
*/ * C*aH6*  
private void insertSort(int[] data) { KJt6d`ZN  
int temp; ')(U<5y)  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); uaha)W;'9  
} 9]I{GyH  
} !d95gq<=>  
} q 'uGB fE.  
z|$9%uz"  
} QEF$Jx  
hXD/  
归并排序: SPtx_+ Q)S  
/!*=*  
package org.rut.util.algorithm.support; l}D /1~d  
nrbP3sf*  
import org.rut.util.algorithm.SortUtil; SES-a Mi3  
g)IW9q2  
/** "S*@._   
* @author treeroot %r*,m3d  
* @since 2006-2-2 k GYsjhL\d  
* @version 1.0 O'{kNr{u  
*/ `l/nAKg?W  
public class MergeSort implements SortUtil.Sort{ 5FF28C)>/  
y` '#gH  
/* (non-Javadoc) *<6dB#' J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F;}JSb"  
*/ n5.sx|bI?  
public void sort(int[] data) { ~M} K]Li  
int[] temp=new int[data.length]; 0;">ETh=  
mergeSort(data,temp,0,data.length-1); S2*sh2-&6  
} ( B\ UZb  
43M.Hj]  
private void mergeSort(int[] data,int[] temp,int l,int r){ JJ_ Z{  
int mid=(l+r)/2; ZCc23UwI  
if(l==r) return ; g H'hA'  
mergeSort(data,temp,l,mid); S\A0gOL^  
mergeSort(data,temp,mid+1,r); 6fo" k+S  
for(int i=l;i<=r;i++){ =L#&`s@)_  
temp=data; nsi? .c&0!  
} d38o*+JCf  
int i1=l; d5Ae67  
int i2=mid+1; G5U?]& I8  
for(int cur=l;cur<=r;cur++){ aB;f*x  
if(i1==mid+1) ^rq\kf*]  
data[cur]=temp[i2++]; `x _(EZ  
else if(i2>r) *Xk5H,:  
data[cur]=temp[i1++]; rMIX{K)'f  
else if(temp[i1] data[cur]=temp[i1++]; /"La@M37  
else nm<VcCc  
data[cur]=temp[i2++]; =ZURh_{xV  
} rM= :{   
} |X>'W"Mn  
qQ)1+^  
} @hA`f4^  
M-h+'G  
改进后的归并排序: .E^w, o  
;[ Dxk$"  
package org.rut.util.algorithm.support; oCkG  
<v -YMk@  
import org.rut.util.algorithm.SortUtil; 6:%lxG  
pEcYfj3M  
/** bFN/{^SB  
* @author treeroot Hm>cKPZ)  
* @since 2006-2-2 D['J4B  
* @version 1.0 KZg2`8F   
*/ T\p>wiY2|F  
public class ImprovedMergeSort implements SortUtil.Sort { r@r*|50  
5%9Uh'y#  
private static final int THRESHOLD = 10; o[KZm17  
a_S`$(7k  
/* dO2?&f  
* (non-Javadoc) 7)<Ib j<M  
* ^cPVnl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X(x,6cC  
*/ K!ogpd&X&  
public void sort(int[] data) { ;0m J4G  
int[] temp=new int[data.length]; 6|q"lS*$S  
mergeSort(data,temp,0,data.length-1); Rkk`+0K7$J  
} ,m`&J?  
Dx /w&v  
private void mergeSort(int[] data, int[] temp, int l, int r) { ws`r\k]3J  
int i, j, k; Ws3z-U>j  
int mid = (l + r) / 2; V*s\~h)  
if (l == r) +~G:z|k  
return; Jxe5y3* (  
if ((mid - l) >= THRESHOLD) 4$vUD1('  
mergeSort(data, temp, l, mid); 0$`pYW]  
else @BnK C&{  
insertSort(data, l, mid - l + 1); VFZyWX@#u  
if ((r - mid) > THRESHOLD) FLQke"6i0:  
mergeSort(data, temp, mid + 1, r); |=:@<0.'  
else *>qc6d@'  
insertSort(data, mid + 1, r - mid); ;sYDs71y  
um$U3'0e  
for (i = l; i <= mid; i++) { {~51h}>b#  
temp = data;  y_[VhZ%  
} R?lTB3"  
for (j = 1; j <= r - mid; j++) { V}<<?_  
temp[r - j + 1] = data[j + mid]; \ CcVk"/  
} 7^rT-f07  
int a = temp[l]; kb~ s, @p  
int b = temp[r]; |b='DJz2  
for (i = l, j = r, k = l; k <= r; k++) { Ag:/iB ]  
if (a < b) { z"7?I$N Q  
data[k] = temp[i++]; "&D0Sd@[?  
a = temp; 7ZAxhFC  
} else { 3`SH-"{j%  
data[k] = temp[j--]; wsrdBxd5  
b = temp[j]; *$VeR(QN  
} fuHNsrNlm  
} 3C=QWw?  
} _o/LFLq  
~v"4;A 6  
/** 1t wC-rC  
* @param data  L_3Ao'SA  
* @param l m r"b/oM{  
* @param i F_.rLgGY  
*/ )voJq\Y)%  
private void insertSort(int[] data, int start, int len) { (Ild>_Tdb`  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 'c7C*6;a  
} .}!"J`{ W  
} $p:RnH\H1  
} "159Q  
} L/\s~*:M  
n@|5PI"bx  
堆排序: T%74JRQ  
q@k/"ee*?  
package org.rut.util.algorithm.support; LtIp,2GP&_  
*\Z9=8yK  
import org.rut.util.algorithm.SortUtil; )!z4LE  
.n$c+{  
/** >TI/W~M  
* @author treeroot 'Ur1I "  
* @since 2006-2-2 WB)pE'5  
* @version 1.0 u@&e{w~0  
*/ 0?V{u`*  
public class HeapSort implements SortUtil.Sort{  +_E^E  
X~UrAG}_  
/* (non-Javadoc) 9w3KAca  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?D>%+rK8c  
*/ aSse' C<a  
public void sort(int[] data) { HxUJ 0Q  
MaxHeap h=new MaxHeap(); 1S[4@rZ  
h.init(data); &{4KymB:  
for(int i=0;i h.remove(); g'X{  
System.arraycopy(h.queue,1,data,0,data.length); Ms<v81z5T  
} --OAsbr  
&=f] a  
private static class MaxHeap{ Z.}Z2K  
"2 \},o9  
void init(int[] data){ tt&#4Z  
this.queue=new int[data.length+1]; gQQve{'  
for(int i=0;i queue[++size]=data; C6"{-{H  
fixUp(size); KWS\iu  
} 5J-slNNCQ  
} B_DyH C\<  
mX2X.ww(4  
private int size=0; s4uZ>  
OYyF*F&S[  
private int[] queue; ''^2rF^  
ppuJC ' GW  
public int get() { %OJ"@6A  
return queue[1]; %45*DT  
} =Q,D3F -+f  
b{BiC&3  
public void remove() { XqLR2 d  
SortUtil.swap(queue,1,size--); i);BTwW)#]  
fixDown(1); (I/ZI'Ydy  
} M1z ?E@kz  
file://fixdown QVF561Yz  
private void fixDown(int k) { vs^)=  
int j; (fYYcpd,k  
while ((j = k << 1) <= size) { o\<JG?P  
if (j < size %26amp;%26amp; queue[j] j++; Zd| u>tn  
if (queue[k]>queue[j]) file://不用交换 L)i6UAo  
break; a8YFH$Xh  
SortUtil.swap(queue,j,k); sa}.o ZpQ  
k = j; 00LL&ot  
} PYwGGB-  
} # uy^AC$  
private void fixUp(int k) { C1#f/o->  
while (k > 1) { SB|Cr:wM  
int j = k >> 1; S c ijf 9  
if (queue[j]>queue[k]) Y .E.(\  
break; aI>F8R?  
SortUtil.swap(queue,j,k); hWiHKR]  
k = j; l\"CHwN?Y  
} ec,Bu7'8  
} 6>3zD)tG  
]|N"jr?7H  
} nf-6[dg  
l*Q OM  
} S\ K[l/  
}R~C<3u\2  
SortUtil: RWB]uHzE  
_PLZ_c:O  
package org.rut.util.algorithm; o4^#W;%w  
E<p<"UjcCJ  
import org.rut.util.algorithm.support.BubbleSort; vl!o^_70(  
import org.rut.util.algorithm.support.HeapSort; (S?qxW?  
import org.rut.util.algorithm.support.ImprovedMergeSort; )+"(7U<  
import org.rut.util.algorithm.support.ImprovedQuickSort; >_#A*B|  
import org.rut.util.algorithm.support.InsertSort; S#0C^  
import org.rut.util.algorithm.support.MergeSort; ?es9j]  
import org.rut.util.algorithm.support.QuickSort; BwYR"  
import org.rut.util.algorithm.support.SelectionSort; -dw/wHf"  
import org.rut.util.algorithm.support.ShellSort; Gx|/ Jq  
?IDkDv!na~  
/** ug/P>0  
* @author treeroot a ~k*Gd(  
* @since 2006-2-2 R0yp9icS  
* @version 1.0 - v=ndJ.  
*/ #UnGU,J  
public class SortUtil { FC4hvO(/m  
public final static int INSERT = 1; >`n)-8  
public final static int BUBBLE = 2; ?U,XyxN  
public final static int SELECTION = 3; R_IT${O  
public final static int SHELL = 4; cr!sq.)s  
public final static int QUICK = 5; ']sIU;h3  
public final static int IMPROVED_QUICK = 6; '<wZe.Q!  
public final static int MERGE = 7; CbMClnF  
public final static int IMPROVED_MERGE = 8; '1lz`CAB+  
public final static int HEAP = 9; c;'7o=rr  
Ct0%3]<J  
public static void sort(int[] data) { .Pa6HA !  
sort(data, IMPROVED_QUICK); I^QB`%v5  
} ,f .#-  
private static String[] name={ E;r~8^9)  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ,`(Qs7)Xx  
}; a]x\e{  
FFc?Av?_  
private static Sort[] impl=new Sort[]{ C 2?p>S/q  
new InsertSort(), XOzZtt  
new BubbleSort(), 0urM@/j+  
new SelectionSort(), HF%)ip+  
new ShellSort(), lW@i,1  
new QuickSort(), 5{#ya 2  
new ImprovedQuickSort(), T) cbpkH4  
new MergeSort(), )eWg2w]  
new ImprovedMergeSort(), !7uFH PK-  
new HeapSort() jhE3@c@pT  
}; ,,(BW7(  
V7>{,  
public static String toString(int algorithm){ W.<I:q`eO  
return name[algorithm-1]; K/LoHWy+n*  
} ,:3Di (  
_+nlm5  
public static void sort(int[] data, int algorithm) { 5,?Au  
impl[algorithm-1].sort(data); zC$(/nZ  
} @RS|}M^4  
.sbV<ulbc  
public static interface Sort { E9S&UU,K  
public void sort(int[] data); _qhYG1t  
} AY%Y,< a  
C AF{7 `{  
public static void swap(int[] data, int i, int j) { qXQ7Jg9  
int temp = data; 6V c&g  
data = data[j]; ' |K408i   
data[j] = temp; }Z\PE0  
} u:&Lf  
} n>I NJ  
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