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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 0->  
插入排序: DC*|tHl  
Fw:s3ON9}  
package org.rut.util.algorithm.support; /eR@&!D '  
'ESy>wA{y<  
import org.rut.util.algorithm.SortUtil; sr#, S(p  
/** #eE:hiu<v  
* @author treeroot r3Z-mJ$:  
* @since 2006-2-2 wlKpHd*  
* @version 1.0 >~J_9'gX6  
*/ ~"Ek X  
public class InsertSort implements SortUtil.Sort{ x#dJH9NR[  
OY~5o&Oa  
/* (non-Javadoc) }Sp MHR`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $Ry NM2YI  
*/ @oYq.baHX  
public void sort(int[] data) { :'GTCo$3  
int temp; 1Sz5&jz  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3 ;.{ O%bX  
} ~`tc|Zu  
} !^q<)!9<EO  
} {LJCY<IGq  
#D//oL"u]  
} x+yt| &B  
e%'9oAz  
冒泡排序: :Np&G4IM>  
0e vxRcrzz  
package org.rut.util.algorithm.support; 3CQpe  
C<w9f  
import org.rut.util.algorithm.SortUtil; lt0(Kf g  
(a7IxW  
/** %I Y-0\  
* @author treeroot |Z 3POD"9  
* @since 2006-2-2 f.+e  
* @version 1.0 X[;4.imE  
*/ wm2Q(l*HH  
public class BubbleSort implements SortUtil.Sort{ P!bm$h*3?  
D"1ciO8^I]  
/* (non-Javadoc) j?z(fs-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nsgNIE{>gO  
*/ `m'2RNSc+#  
public void sort(int[] data) { YVW!u6W'[6  
int temp; SKRD{MRsux  
for(int i=0;i for(int j=data.length-1;j>i;j--){ L**!$k"{5  
if(data[j] SortUtil.swap(data,j,j-1); d\Dxmb]o  
} )sNtw Sl^  
} "t_]Qu6  
} gn(n</\/O  
}  ITbl%q  
yDd&*;9%Qg  
} yY_]YeeR  
/h2`?~k+  
选择排序: cVulJ6  
Ld`~^<B  
package org.rut.util.algorithm.support; `VBjH]$  
_TX.}167;-  
import org.rut.util.algorithm.SortUtil; mbS &>  
c yN_Sg  
/** OH=Ffy F,  
* @author treeroot A0[flIl  
* @since 2006-2-2 o)-Qd3d%S  
* @version 1.0 CB|z{(&N  
*/ \-sD RW  
public class SelectionSort implements SortUtil.Sort { _r,# l5~U  
HVu_@[SYR3  
/* T@Q.m.iV4  
* (non-Javadoc) -@#AQ\  
* ied<1[~S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hR{Fn L  
*/ !EKF^n6  
public void sort(int[] data) { sHEISNj/^  
int temp; ,[ Ytl  
for (int i = 0; i < data.length; i++) { /D~ ,X48+  
int lowIndex = i; 7CQ48LH]  
for (int j = data.length - 1; j > i; j--) { iWtWT1n8n  
if (data[j] < data[lowIndex]) { 92} , A`=  
lowIndex = j; ~sA}.7  
} IPT}JX'  
} 8H{@0_M  
SortUtil.swap(data,i,lowIndex); 8o4 vA,  
} Fir7z nRW  
} ].1R~7b  
7qh_URt@  
} @P@t/  
2oq>tnYyV[  
Shell排序: Y}Qu-fm  
S:R%%cy  
package org.rut.util.algorithm.support; khEHMvVH  
rP>5OLP  
import org.rut.util.algorithm.SortUtil; u|w[ b9^r  
i-/'F  
/** 0,VbB7 z  
* @author treeroot .UJDn^@  
* @since 2006-2-2 B6ys 5eQ  
* @version 1.0 CP={|]>+S  
*/ NVOY,g=3X  
public class ShellSort implements SortUtil.Sort{ @h$7C<  
+i K.+B  
/* (non-Javadoc) fM8 :Nt$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M\T6cN@m  
*/ `[`eg<xj  
public void sort(int[] data) { wRWN]Vo  
for(int i=data.length/2;i>2;i/=2){ EW YpYMkm  
for(int j=0;j insertSort(data,j,i); #&$4tTl  
} Lo !kv*  
} $)PNf'5Zg  
insertSort(data,0,1); R2r0'Yx  
} i  #8)ad  
RJSNniYr7  
/** 2.2 s>?\  
* @param data /oh[ Nu1D  
* @param j K{"+eA>CU  
* @param i 8vchLl#  
*/ * 78TT \q<  
private void insertSort(int[] data, int start, int inc) { )2:d8J\  
int temp; A2htD!3  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); MF>?! !  
} t*n!kXa  
} R{Cj]:Ky  
} UF0PWpuO  
NO;+:0n  
} Q?Q!D+~mND  
A.(Z0,S-i  
快速排序: esFBWJ  
6$`8y,TMSt  
package org.rut.util.algorithm.support; .p <!2   
ld}- }W-cq  
import org.rut.util.algorithm.SortUtil; ])vM# f  
^|OxlfS  
/** UDGVq S!,E  
* @author treeroot F DXAe-|Q  
* @since 2006-2-2 $FS j^v]  
* @version 1.0 [&"`2n  
*/ _18) XR  
public class QuickSort implements SortUtil.Sort{ EtKy?]i  
Wc#4%kT  
/* (non-Javadoc) ;5dJ5_}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jIg]?4bW[  
*/ Me2%X>;  
public void sort(int[] data) { CO-9-sQx  
quickSort(data,0,data.length-1); "}(*Km5Po  
} f D2. Zh  
private void quickSort(int[] data,int i,int j){ 8FU8E2zo  
int pivotIndex=(i+j)/2; O_*%_S}F&  
file://swap PA&Ev0`+  
SortUtil.swap(data,pivotIndex,j); N-y[2]J90  
={B%qq  
int k=partition(data,i-1,j,data[j]); 1F{c5  
SortUtil.swap(data,k,j); Wv8?G~>  
if((k-i)>1) quickSort(data,i,k-1); ,F!zZNW9  
if((j-k)>1) quickSort(data,k+1,j); 2.qEy6  
f;x0Ho5C2  
} ~5q1zr)E  
/** xG/B$DLn  
* @param data Kejp7 okb  
* @param i e ^2n58  
* @param j SFv'qDA  
* @return +DU^"q=  
*/ A+de;&  
private int partition(int[] data, int l, int r,int pivot) { x+EkL3{  
do{ FC@h6 \+a  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); q HaH=g%  
SortUtil.swap(data,l,r); C3)*Mn3%P  
} ,)@njC?J  
while(l SortUtil.swap(data,l,r); X|y(B%:  
return l; -M5vh~Tp  
} !K*(# [  
FkE)~g  
} M#n lKj<  
d^MRu#]  
改进后的快速排序: 5.1z9[z  
!6!Gx:  
package org.rut.util.algorithm.support; O,6Wdw3+-3  
VKV :U60  
import org.rut.util.algorithm.SortUtil; .V4-  
d|?Xo\+  
/** plL|Ubn  
* @author treeroot Xii>?sA5Z"  
* @since 2006-2-2 i/j53towe  
* @version 1.0 v5>A1\  
*/ w=pr?jt1:  
public class ImprovedQuickSort implements SortUtil.Sort { zD)/QFILy  
!iO2yp  
private static int MAX_STACK_SIZE=4096; ?4A/?Z]ub  
private static int THRESHOLD=10; sSd/\Ap  
/* (non-Javadoc) cbN;Kv?ak}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E\|nP~;~F9  
*/ #u}%r{T  
public void sort(int[] data) { 4 km^S9  
int[] stack=new int[MAX_STACK_SIZE]; k&2=-qgVR  
#x;,RPw5  
int top=-1; gg >QXui  
int pivot; NV7k@7_{B  
int pivotIndex,l,r; )/?H]o$NU  
Z\?2"4H  
stack[++top]=0; q.p.$)  
stack[++top]=data.length-1; D"J',YN$  
,DZvBS  
while(top>0){ f(Y_<%  
int j=stack[top--]; 3 P9ux  
int i=stack[top--]; V"m S$MN  
! !A0K"h  
pivotIndex=(i+j)/2; W#S82  
pivot=data[pivotIndex]; V:$+$"|  
T]\c2U  
SortUtil.swap(data,pivotIndex,j); |~r-VV(=  
L8 L1_  
file://partition =A.$~9P  
l=i-1; =}vT>b  
r=j; 4);_f  
do{ <%HRs>4  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); T9C_=0(hn  
SortUtil.swap(data,l,r); 7 p{Pmq[  
} 6Q^~O*cw  
while(l SortUtil.swap(data,l,r); MF8-q'upyT  
SortUtil.swap(data,l,j); .E<nQWz 8  
{uj_4Ft  
if((l-i)>THRESHOLD){ @eJCr)#}  
stack[++top]=i; qx t0Jr8  
stack[++top]=l-1; G18w3BFx  
} }5-w,m{8/  
if((j-l)>THRESHOLD){ GC{M"q|_  
stack[++top]=l+1; KNUK]i&L  
stack[++top]=j; 64<;6*  
} TIWR[r1!  
a YWWln  
} d ~Z\%4  
file://new InsertSort().sort(data); c2y,zq|H  
insertSort(data); &EfQ%r}C  
} lH}KFFbp  
/** 7uF|Z(  
* @param data d9K8[Q5^3  
*/ 7l D-|yx  
private void insertSort(int[] data) { zaqX};b  
int temp; <s9?9^!!V^  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); A*EOn1hN  
} /ad9Q~nJ  
} ']r8q %  
} =]Vz= <  
JZ:@iI5>+  
} j]Jgz<  
JE=t e(a  
归并排序: .T| }rB<c  
Bqq=2lj  
package org.rut.util.algorithm.support; ;mkkaW,D*  
: ?>7Z6  
import org.rut.util.algorithm.SortUtil; l/&.HF  
Y`;}w}EcgR  
/** eTiTS*`u  
* @author treeroot 5(3O/C{?~  
* @since 2006-2-2 $ik*!om5  
* @version 1.0 CSO'``16  
*/ /Mqhx_)>A  
public class MergeSort implements SortUtil.Sort{ ZK5nN9`  
/wV|;D^ )  
/* (non-Javadoc) F (*B1J2_g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t|aV:x  
*/ g7\ =  
public void sort(int[] data) { |$RNY``J  
int[] temp=new int[data.length]; Dac)`/  
mergeSort(data,temp,0,data.length-1); ~}Xus?e  
} T] zEcx+e  
OtG\Uw8  
private void mergeSort(int[] data,int[] temp,int l,int r){ *g/klK  
int mid=(l+r)/2; L:z0cvn"  
if(l==r) return ; !+l'<*8V  
mergeSort(data,temp,l,mid); o NtFYY  
mergeSort(data,temp,mid+1,r); YuXJT*  
for(int i=l;i<=r;i++){ LG #^g6P  
temp=data; ;G[V:.o-  
} G t w>R  
int i1=l; *{g3ia  
int i2=mid+1; *FlPGBjJ  
for(int cur=l;cur<=r;cur++){ #36Q O  
if(i1==mid+1) OQVrg2A%(  
data[cur]=temp[i2++]; T$4{fhV \  
else if(i2>r) 8y;Rw#Dz  
data[cur]=temp[i1++]; x9_mlZ  
else if(temp[i1] data[cur]=temp[i1++]; _P>YG<*"kQ  
else iOE. .xA:  
data[cur]=temp[i2++]; k]b*&.EY1  
} iI3:<j l  
} +v Bi7#&  
+$2{u_m,  
} ?,} u6tH  
 T]#V  
改进后的归并排序: Q;h.}N8W  
ZnG.::&:  
package org.rut.util.algorithm.support; +#O+%!  
$.G 7Vt  
import org.rut.util.algorithm.SortUtil; dP5x]'"x  
%uW  =kr  
/** $TQhr#C]  
* @author treeroot #6`5-5Ks;  
* @since 2006-2-2 ?jx]%n fV  
* @version 1.0 04a ^jjc  
*/ dC11kq qj  
public class ImprovedMergeSort implements SortUtil.Sort { rIyH/=;  
^^y eC|~N:  
private static final int THRESHOLD = 10; 'ofj1%c  
&w@]\7L,:  
/* h$cm:uks  
* (non-Javadoc) v2T2/y%  
* Zk3Pv0c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .~z'm$s1o  
*/ 60D36b(  
public void sort(int[] data) { FG?Mc'r&  
int[] temp=new int[data.length]; sD|l}f  
mergeSort(data,temp,0,data.length-1); SZykG[  
} X{9^$/XsJ  
|Uh8b %  
private void mergeSort(int[] data, int[] temp, int l, int r) { .@1+}0  
int i, j, k; .`or^`X3  
int mid = (l + r) / 2; ,75)  
if (l == r) Q*ITs!~Z  
return; "wUIsuG/p  
if ((mid - l) >= THRESHOLD) N&9o  1_}  
mergeSort(data, temp, l, mid); rhv~H"qzW  
else &L o TO+  
insertSort(data, l, mid - l + 1); } ueFy<F  
if ((r - mid) > THRESHOLD) WT *"V<Z  
mergeSort(data, temp, mid + 1, r); /l$x}  
else 2YD\KXDo  
insertSort(data, mid + 1, r - mid); w.qtSW6M+  
)"?4d[ 5  
for (i = l; i <= mid; i++) { i'~-\F!  
temp = data; [%W'd9`>  
} Q|y }mC/  
for (j = 1; j <= r - mid; j++) { 1wSAwpz  
temp[r - j + 1] = data[j + mid]; A5l Cc b  
} C.j+Zb1Z(  
int a = temp[l]; h my%X`%j  
int b = temp[r]; F^!D[:;jK  
for (i = l, j = r, k = l; k <= r; k++) { 2y [Q  
if (a < b) { JK,MK|  
data[k] = temp[i++]; (d9~z  
a = temp; &L|oqXE0L  
} else { ('J/Ww<  
data[k] = temp[j--]; So%X(, |  
b = temp[j]; Im]@#X  
} pEyZH!W  
} yOM/UdWq  
} h]7_ N,  
lg%fjBY  
/** 1" '3/MFQ8  
* @param data 0uy'Py@2<  
* @param l ucCf%T\:  
* @param i d0J /"<  
*/ 0KA*6]h t  
private void insertSort(int[] data, int start, int len) { @N'n>8Wn  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Bk8}K=%w  
} vu0Ql1  
} +LHU}'|  
} 8}%F`=Y0  
} ;`AB-  
v>X!/if<y  
堆排序: 2m Y!gVi  
.ARYCTyG  
package org.rut.util.algorithm.support; y6 (L=$+B  
hY}Q|-|  
import org.rut.util.algorithm.SortUtil; +.cpZqWn3  
R~<N*En~  
/** \p!UY 3'  
* @author treeroot ]w*"KG!(  
* @since 2006-2-2 A %w9Da?B  
* @version 1.0 jN6V`Wh_  
*/ +!).'  
public class HeapSort implements SortUtil.Sort{ *qpFt Bg  
FDo PW~+[  
/* (non-Javadoc) 'O a3 6@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4*_jGw  
*/ Xj, %t}  
public void sort(int[] data) { ED0cnr\yG  
MaxHeap h=new MaxHeap(); -TD\?Q  
h.init(data); T;M ;c. U  
for(int i=0;i h.remove(); bH+NRNI]  
System.arraycopy(h.queue,1,data,0,data.length); k(H&Af+  
} fW = N  
d` GN!^  
private static class MaxHeap{ V x#M!os0  
X5owAc6  
void init(int[] data){ = gF035  
this.queue=new int[data.length+1]; %oBP6|e  
for(int i=0;i queue[++size]=data; "#)|WVa=BM  
fixUp(size); Jm!,=} oP'  
} 'Agw~ &$  
} [aSuEu?mC  
(wj:Gc  
private int size=0; Gf8^nfr  
!'_7MM  
private int[] queue; \.2i?<BC  
8#!g;`~ D  
public int get() { zk<V0NJIL*  
return queue[1]; EIw] 9;'_  
} ~d7t\S  
;*?>w|t}w  
public void remove() { HMVP71  
SortUtil.swap(queue,1,size--); V u")%(ix  
fixDown(1); {Q>OZm\+  
} 0"7+;(\1Rk  
file://fixdown 1$RJzHS  
private void fixDown(int k) { GZO:lDdA  
int j; +-tFgXG  
while ((j = k << 1) <= size) { k'r}@-X  
if (j < size %26amp;%26amp; queue[j] j++; *I :c@iCNJ  
if (queue[k]>queue[j]) file://不用交换 aV5M}:D  
break; #^$_/Q#C  
SortUtil.swap(queue,j,k); et5lfj  
k = j; pPa]@ z~O  
} 89>}`:xS^  
} gaN/ kp  
private void fixUp(int k) { p2Khfl6-  
while (k > 1) { UvGxA[~2+  
int j = k >> 1; +TbAtkEF*  
if (queue[j]>queue[k]) (:8a6=xQ  
break; OPN\{<`*d  
SortUtil.swap(queue,j,k); 0{vT`e'  
k = j; Ma!  
} OxDq LX  
} %GTFub0 F  
(Y'cxwj%  
} %Bw:6Y4LZ  
 2d*bF.  
} =4`wYh  
%}(` ?  
SortUtil: +D5gbxZX  
N!c FUZ5]  
package org.rut.util.algorithm; O? g;Ny  
#OPEYJ;*9d  
import org.rut.util.algorithm.support.BubbleSort; ,K[e?(RP  
import org.rut.util.algorithm.support.HeapSort;  @_f^AQ  
import org.rut.util.algorithm.support.ImprovedMergeSort; hZfj$|<  
import org.rut.util.algorithm.support.ImprovedQuickSort; T; tY7;<  
import org.rut.util.algorithm.support.InsertSort; 6yy%_+k*  
import org.rut.util.algorithm.support.MergeSort; JXL?.{'A  
import org.rut.util.algorithm.support.QuickSort; /?r A|  
import org.rut.util.algorithm.support.SelectionSort; ?o[h$7` o6  
import org.rut.util.algorithm.support.ShellSort; .8W-,R4  
M~\dvJ$cH  
/** cW>=/  
* @author treeroot =s!0EwDH3  
* @since 2006-2-2 .mfLHN%:  
* @version 1.0 sJx_X8  
*/ hYpxkco"4'  
public class SortUtil { R& t*x  
public final static int INSERT = 1; \t)va:y  
public final static int BUBBLE = 2; .O"a:^i  
public final static int SELECTION = 3; >=97~a+.  
public final static int SHELL = 4; &(,\~  
public final static int QUICK = 5; KO=$Hr?f;  
public final static int IMPROVED_QUICK = 6; @*|VWHR  
public final static int MERGE = 7; Awa| (]  
public final static int IMPROVED_MERGE = 8; )M dddz4  
public final static int HEAP = 9; 4_5f4%S  
5H.~pc2y  
public static void sort(int[] data) { D&F{0  
sort(data, IMPROVED_QUICK); EtzSaB*|  
} {Vj&i.2,  
private static String[] name={ VIdKe&,  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 4ams~  
}; iS,l  
&u[{VR:  
private static Sort[] impl=new Sort[]{ Y>w7%N  
new InsertSort(), 1s(T#jh  
new BubbleSort(), ^P@:CBO  
new SelectionSort(), OC*28)  
new ShellSort(), ;+XrCy!.)L  
new QuickSort(), h_?`ESI~  
new ImprovedQuickSort(), 1v|-+p42  
new MergeSort(), "7y, d%H  
new ImprovedMergeSort(), m|W17LhW{  
new HeapSort() BL 1KM2]  
}; y:98}gW`n  
FA*$ dwp  
public static String toString(int algorithm){ (a#gCG\  
return name[algorithm-1]; -B#1+rUW  
} WGn=3(4  
'Z~ZSu  
public static void sort(int[] data, int algorithm) { pZ'q_Oux  
impl[algorithm-1].sort(data); 0]bt}rh  
} uQ-GJI^t  
J{b#X"i  
public static interface Sort { FShjUl>mV  
public void sort(int[] data); g0j)k6<6(Y  
} I9 zs  
|&8XmexLb  
public static void swap(int[] data, int i, int j) { ns>$  
int temp = data; 3[u- LYW  
data = data[j]; _aevaWtEx  
data[j] = temp; BS fmS(.  
} >[aR8J/U  
} 1<'z)r4  
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