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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。 Fe8X@63  
插入排序: {i>AQ+z61f  
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package org.rut.util.algorithm.support; 1wgL^Qz@  
v.ZUYa|  
import org.rut.util.algorithm.SortUtil; It*U"4lgi  
/** aB%.]bi  
* @author treeroot T{prCM  
* @since 2006-2-2 | BaEv\$K  
* @version 1.0 yY]x' 'K  
*/ &dB@n15'A  
public class InsertSort implements SortUtil.Sort{ xM())Z|2  
"rdpA[>L  
/* (non-Javadoc) FM]clC;X?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +|C@B`h  
*/ :6n4i$  
public void sort(int[] data) { VgPlIIHh5  
int temp; %[XP}L$  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &XNt/bK -?  
} FQek+[ox  
} uc9h}QJ*  
} 9>{fsy  
`;mgJD  
} m%9Yo%l~  
_DR@P(0>_  
冒泡排序: ^"Bhp:o2  
BOpZ8p'eH1  
package org.rut.util.algorithm.support; :ok.[q  
4 95Y<x}=  
import org.rut.util.algorithm.SortUtil; fhi}x(  
?0)K[Kd'Y  
/** 4(8c L?J`0  
* @author treeroot bI.hG32  
* @since 2006-2-2 nw+t!C  
* @version 1.0 @@ j\OR  
*/ \p:)Cdn  
public class BubbleSort implements SortUtil.Sort{ NG3?OAQTw  
q,K|1+jn  
/* (non-Javadoc) G 1{m"1M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wn"\ @QvG  
*/ 4EYD5  
public void sort(int[] data) { fAh|43Y*a  
int temp; olv&K(-ccI  
for(int i=0;i for(int j=data.length-1;j>i;j--){ iKq_s5|sW  
if(data[j] SortUtil.swap(data,j,j-1); (ot,CpI(I  
} "%K'~"S#Q,  
} H~*N:$C  
} F=5+JjrX  
} )]n>.ZmLCB  
g Cp`J(2v:  
} kNP-+o  
Vc0j)3  
选择排序: 1<:5b%^c  
&wQ<sVQ0$  
package org.rut.util.algorithm.support; V 2Xv)  
Zl[EpXlZ  
import org.rut.util.algorithm.SortUtil; "tT4Cb3  
Mn5(Kw?o2J  
/** R(t%/Hvs$  
* @author treeroot vdXi'<  
* @since 2006-2-2 ,`U>BBBLv  
* @version 1.0 RZEq@q  
*/ zMepF]V  
public class SelectionSort implements SortUtil.Sort { N75U.;U0  
<j,I@%  
/* 5NkF_&S_1  
* (non-Javadoc) e'~Qe_  
* Uhu?G0>O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |>P:R4P  
*/ [ `|t(E'  
public void sort(int[] data) { WiZkIZ  
int temp; 46M=R-7=  
for (int i = 0; i < data.length; i++) { em7L `,  
int lowIndex = i; pPxgjX  
for (int j = data.length - 1; j > i; j--) { ZKW1HL ]m  
if (data[j] < data[lowIndex]) { ys!O"=OJ  
lowIndex = j; Dh m ;K$T  
} 4~Q<LEly  
} p7+>]sqX  
SortUtil.swap(data,i,lowIndex); !pfpT\i]N:  
} C!_=L?QT^  
} eG+$~\%Fub  
(]k Q9}8  
} S#CaJ}M  
^?|4<Rm  
Shell排序: BgN^].z&  
;=2JbA+"G  
package org.rut.util.algorithm.support; zM8 jjB  
k %{q q v  
import org.rut.util.algorithm.SortUtil; 37n2#E  
AW;xlY= g  
/** Sc3{Y+g  
* @author treeroot  8\nka5  
* @since 2006-2-2 :bo2H[U+  
* @version 1.0 3hkEjR  
*/ r}Vr_  
public class ShellSort implements SortUtil.Sort{ dm[JDVv|  
{Mo[C%  
/* (non-Javadoc) uD{^1c3x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QP"5A7=m  
*/ -^np"Jk  
public void sort(int[] data) { Rxw+`ru  
for(int i=data.length/2;i>2;i/=2){ @WXRZEz  
for(int j=0;j insertSort(data,j,i); pVl7] _=m  
} aeYz;&K  
} 2./ z6jXW_  
insertSort(data,0,1); EWl9rF@I  
} ">B&dNrt  
s o: o b}  
/** }.u[';q ]S  
* @param data gdAd7 T  
* @param j .R)Ho4CE  
* @param i I+Y Z+  
*/ WCaMPz  
private void insertSort(int[] data, int start, int inc) { cEXd#TlY~X  
int temp; <`q-#-V@  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); w3iX "w  
} n\7 >_  
} Z3<lJk\Y  
} W-D4" G@  
X+;#^A3  
} ld%#.~Q  
:\mdVS!o  
快速排序: <}mA>c'k  
U_9|ED:  
package org.rut.util.algorithm.support; <%4pvn8d?&  
sj+ )   
import org.rut.util.algorithm.SortUtil; H>\l E2  
}If,O  
/** $/u.F;  
* @author treeroot )+)qFGVz  
* @since 2006-2-2 ~urk Uz  
* @version 1.0 ;Srzka2  
*/ 1@-l@ P  
public class QuickSort implements SortUtil.Sort{ ?iaO+G&|  
rIyIZWkI  
/* (non-Javadoc) t[({KbIy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K-(C5 "j_  
*/ 7wrRIeES  
public void sort(int[] data) { t|&hXh{  
quickSort(data,0,data.length-1); rWL&-AZQl  
} u3X!O  
private void quickSort(int[] data,int i,int j){ < A`srmS?  
int pivotIndex=(i+j)/2; )):D&wlq  
file://swap ()Img.TIt  
SortUtil.swap(data,pivotIndex,j); .<K9Zyi  
%Zeb#//Jz  
int k=partition(data,i-1,j,data[j]); <0/)v J- 9  
SortUtil.swap(data,k,j); V+u0J"/8  
if((k-i)>1) quickSort(data,i,k-1); 8`<3rj  
if((j-k)>1) quickSort(data,k+1,j); bHDZ=Ik  
ZSwhI@|  
} 25vq#sS]  
/** m9'bDyyK  
* @param data ^MWp{E  
* @param i * P12d  
* @param j rv~OfL  
* @return I'J-)D`  
*/ T[ zEAj  
private int partition(int[] data, int l, int r,int pivot) { \  6Y%z  
do{ 6m9\0)R  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ;P8.U(  
SortUtil.swap(data,l,r); YRaF@?^Gn  
} 2 I.Q-'@  
while(l SortUtil.swap(data,l,r); Q9g^'a  
return l; BgsU:eKe  
} ~:b5UIAk  
CT.hBz -S  
} o3'Za'N.  
}dq)d.c  
改进后的快速排序: Q2gz\N  
qz-lQ  
package org.rut.util.algorithm.support; pW<l9W  
L>`inrpz=w  
import org.rut.util.algorithm.SortUtil; q ) e* eN  
) Cm95,Y  
/** {ZUgyGE{  
* @author treeroot 7%|HtBXv^  
* @since 2006-2-2 X-yS9E  
* @version 1.0 fHF*#  
*/ u~'j?K.^  
public class ImprovedQuickSort implements SortUtil.Sort { O V^?cA  
JGlp7wro  
private static int MAX_STACK_SIZE=4096; . N5$s2t  
private static int THRESHOLD=10; SQdK`]4  
/* (non-Javadoc) FdxV#.BE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bL%-9BG  
*/ M r~IVmtf  
public void sort(int[] data) { o3:h!(#G  
int[] stack=new int[MAX_STACK_SIZE]; }vX 1@n7T6  
<a(739IF  
int top=-1; [TmZ\t!5$  
int pivot; `$] ZT>&  
int pivotIndex,l,r; \uOR1z  
_BND{MsX  
stack[++top]=0; jq[Q>"f  
stack[++top]=data.length-1; .|LY /q\A  
9'O@8KB_  
while(top>0){ \k%j  
int j=stack[top--]; RPTIDA))  
int i=stack[top--]; u0Opn=(_  
8J0#lu  
pivotIndex=(i+j)/2; Cyp%E5b7  
pivot=data[pivotIndex]; 'Y5l3xQk  
%PM8;]  
SortUtil.swap(data,pivotIndex,j); WQNFHRfO*n  
{%v{iE>  
file://partition Mgux (5`;  
l=i-1; z| m-nIM  
r=j; %hA0  
do{ rW2   
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ]2mfby  
SortUtil.swap(data,l,r); dJ7!je1N*  
} ^Zq3K  
while(l SortUtil.swap(data,l,r); LHusy;<E[  
SortUtil.swap(data,l,j); U1pwk[  
pE]s>T a  
if((l-i)>THRESHOLD){ (+9^)No  
stack[++top]=i; o[k,{`M0  
stack[++top]=l-1; Uclta  
} KCS},X_  
if((j-l)>THRESHOLD){ NY%=6><t!  
stack[++top]=l+1; u:}yE^8@  
stack[++top]=j;  rUBc5@|  
} (p?B=  
Y-P?t+l  
} xU;Q ~(  
file://new InsertSort().sort(data); 5J*h7  
insertSort(data); A~ wVY  
} pLpWc~#  
/** a_Z[@W  
* @param data 3W@ta1  
*/ ;TCT%j`^o  
private void insertSort(int[] data) { 3\?yjL^  
int temp; 6;}W)S  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0?,%B?A8O  
} ?[hkh8|  
} ds'7zxy/  
} cD9axlJ  
I~>Ye<g#  
} +`~kt4W  
6F?U:N#<  
归并排序: j7=x&)qbx  
x|A{|oFC  
package org.rut.util.algorithm.support; 6iJ\7  
'n7Ld6%1  
import org.rut.util.algorithm.SortUtil; 7HEUmKb"  
Kw&t\},8@  
/** { VFr8F0*H  
* @author treeroot |BE`ASW;  
* @since 2006-2-2 .Za)S5U  
* @version 1.0 LX;" Mz>  
*/ f26hB;n  
public class MergeSort implements SortUtil.Sort{ Jrw R:_+|  
E3 aj  
/* (non-Javadoc) m 3"|$0C~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K`twbTU  
*/ FSkz[D_}  
public void sort(int[] data) { McRfEF \  
int[] temp=new int[data.length]; ~|=goHmm[  
mergeSort(data,temp,0,data.length-1); @x/D8HK2  
} wT^QO^.  
S,^)\=v  
private void mergeSort(int[] data,int[] temp,int l,int r){ *ta?7uSiT  
int mid=(l+r)/2; @SH$QUM(  
if(l==r) return ; 7\ kixfEg  
mergeSort(data,temp,l,mid); 7G &I]>  
mergeSort(data,temp,mid+1,r); @LR:^>&*  
for(int i=l;i<=r;i++){ 629 #t`W\  
temp=data; K|sx"u|?  
} ^Z:qlYZ  
int i1=l; tF~D!t@  
int i2=mid+1; o_on/{qz  
for(int cur=l;cur<=r;cur++){ {_>}K  
if(i1==mid+1) n_MY69W  
data[cur]=temp[i2++]; 9*j$U$:'  
else if(i2>r) GGkU$qp2~  
data[cur]=temp[i1++]; i>=!6Hu2  
else if(temp[i1] data[cur]=temp[i1++]; NT<vs"<B  
else DjveMs$d  
data[cur]=temp[i2++]; z3Q#Wmv2  
}  @1O.;  
} xPorlX)zW  
f|'8~C5I@>  
} @0U={qX  
.u$o^; z!  
改进后的归并排序: F4 :#okt  
FR? \H"'x  
package org.rut.util.algorithm.support; 2H2Yxe7?-  
PNhxF C.  
import org.rut.util.algorithm.SortUtil; [vyi_0[  
_/@u[dWeL  
/** 5 p! rZ  
* @author treeroot \ 3HB  
* @since 2006-2-2 zpBkP-%}E  
* @version 1.0 ;A;FR3=)  
*/ "vN~7%  
public class ImprovedMergeSort implements SortUtil.Sort { h YEUiQ  
.GOF0puiM  
private static final int THRESHOLD = 10; Z<@dM2b)  
/{*0 \`;  
/* Eao^/MKx-  
* (non-Javadoc) 9 Aq\1QC  
* !OL[1_-4|K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1CpIK$/  
*/ "=3bL>\<  
public void sort(int[] data) { %Ae43  
int[] temp=new int[data.length]; :|PgGhW  
mergeSort(data,temp,0,data.length-1); "6 \_/l  
} z"j]m_m H  
k;xIo(:  
private void mergeSort(int[] data, int[] temp, int l, int r) { x{#W84  
int i, j, k; k{-#2Qz  
int mid = (l + r) / 2; iFkXt<_A  
if (l == r) _ 2E*  
return; s\3OqJo%)  
if ((mid - l) >= THRESHOLD) fsz:A"0H  
mergeSort(data, temp, l, mid); 9@yi UX  
else Y;[+^J*a  
insertSort(data, l, mid - l + 1); vvmG46IgZ  
if ((r - mid) > THRESHOLD) 6Us*zKgW  
mergeSort(data, temp, mid + 1, r); U3b&/z|b?  
else }?^5L7n  
insertSort(data, mid + 1, r - mid); +X|^ ~)tMJ  
 "DsL$D2e  
for (i = l; i <= mid; i++) { w-wap  
temp = data; /7jb&f   
} m%)Cw)t 7  
for (j = 1; j <= r - mid; j++) { wC`+^>WFo  
temp[r - j + 1] = data[j + mid]; m)Sdo gt_  
} '4]_~?&x  
int a = temp[l]; F0]xc  
int b = temp[r]; LMTz/M  
for (i = l, j = r, k = l; k <= r; k++) { uwo\FI  
if (a < b) { d_aHUmI^"  
data[k] = temp[i++]; $s"{C"4q  
a = temp; W2T6JFv  
} else { =--oH'P=M  
data[k] = temp[j--]; 5}NTqN0@  
b = temp[j]; bTbF  
} x_$`#m{hL5  
} Zj5B}[,l\  
} Ge+T[  
ibn(eu<uW  
/** ()o[(Hx+ph  
* @param data z6x`O-\  
* @param l gOLN7K-)  
* @param i jU0E=;1  
*/ Q7@oAeNd  
private void insertSort(int[] data, int start, int len) { fF]w[lLDv  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); jN T+?2  
} GiS:Nq`$(  
} DuI>z?bS  
}  /wT<p  
} J1g+H2  
g#b9xTG J^  
堆排序: r2G38/K  
Df5!z\dx  
package org.rut.util.algorithm.support; #b wGDF  
#$ooV1E  
import org.rut.util.algorithm.SortUtil; gnN"6r1  
 rBUWzpE"  
/** z=yE- I{  
* @author treeroot i)th] 1K%  
* @since 2006-2-2 E_-QGE/1  
* @version 1.0 FW)VyVFmk  
*/ OAo;vC:^  
public class HeapSort implements SortUtil.Sort{ ;DX g  
Pmdf:?B  
/* (non-Javadoc) Q:U>nm>xA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hI 1or4V  
*/ \dJOZ2J<z  
public void sort(int[] data) { Y1R?, 5  
MaxHeap h=new MaxHeap(); Yan}H}Oq  
h.init(data); Fxv5kho  
for(int i=0;i h.remove(); W[<ZI>mf  
System.arraycopy(h.queue,1,data,0,data.length); 3 nnoXc'  
} s`gfz}/  
<rxtdI"3  
private static class MaxHeap{ (z  9M  
)f,9 h  
void init(int[] data){ m^gxEPJK  
this.queue=new int[data.length+1]; #7['M;_  
for(int i=0;i queue[++size]=data; `!Yd$=*c_&  
fixUp(size); C`qE ,2.  
} ,Q<mU4  
} ~'v9/I-"  
7j8lhrM}^  
private int size=0; Gj^*  
lc\{47LwZ  
private int[] queue; aM+Am,n`@  
B *%ey?  
public int get() { 0Ua&_D"  
return queue[1]; PUmgcMt  
} FxmHy{JG  
V{UY_ e8W  
public void remove() { x;{Hd;<YF  
SortUtil.swap(queue,1,size--); K5!OvqzG  
fixDown(1); }#h`1 uV  
} #Q'#/\5  
file://fixdown `j8pgnY>5~  
private void fixDown(int k) { Cy dV$!&mP  
int j; + w/B3 b  
while ((j = k << 1) <= size) { b/?)_pg  
if (j < size %26amp;%26amp; queue[j] j++; XK&G`cJ[  
if (queue[k]>queue[j]) file://不用交换 -2'1KAk-W  
break; q_cP<2`@V  
SortUtil.swap(queue,j,k); 1my1m  
k = j; 8SA" bH:  
} +o?;7  
} //'&a-%$^  
private void fixUp(int k) { +xd@un[r<  
while (k > 1) { 'xLXj>  
int j = k >> 1; RsYMw3)G  
if (queue[j]>queue[k]) S)?N6sz%  
break; E0AbVa.  
SortUtil.swap(queue,j,k); vXm'ARj  
k = j; \/64Xv3L0  
} td7Of(k'  
} &0i$Y\g  
Fw:_O2  
} e07u@_'^  
>gDeuye  
} WLA&K]  
q@g#DP+C  
SortUtil: Dt! <  
;;6$d{  
package org.rut.util.algorithm; +NbiUCMX  
3N 5@<:2`  
import org.rut.util.algorithm.support.BubbleSort; P=PeWX*L<Z  
import org.rut.util.algorithm.support.HeapSort; v*OV\h.  
import org.rut.util.algorithm.support.ImprovedMergeSort; %o 5'M^U  
import org.rut.util.algorithm.support.ImprovedQuickSort; iI>7I<_  
import org.rut.util.algorithm.support.InsertSort; =3ovaP  
import org.rut.util.algorithm.support.MergeSort; 9kh MG$  
import org.rut.util.algorithm.support.QuickSort; D5!#c-Y-  
import org.rut.util.algorithm.support.SelectionSort; 1_};!5$.  
import org.rut.util.algorithm.support.ShellSort; 1tLEKSo+  
--EDr>'D5P  
/** S+"Bq:u"  
* @author treeroot TOhWfl;  
* @since 2006-2-2 Gu@C* .jj!  
* @version 1.0 E*h!{)z@F  
*/ N\];{pe>  
public class SortUtil { AOJ[/YpM  
public final static int INSERT = 1; !C h1q  
public final static int BUBBLE = 2; ,Js-'vX  
public final static int SELECTION = 3; % m"Qg<  
public final static int SHELL = 4; ,,!P-kK$  
public final static int QUICK = 5; +u&[ j/  
public final static int IMPROVED_QUICK = 6; F-$!e?,H  
public final static int MERGE = 7; 9)t[YE:U3!  
public final static int IMPROVED_MERGE = 8; @]]&^ 7  
public final static int HEAP = 9; 9g\;L:'  
TyjZ  
public static void sort(int[] data) { plp-[eKcD  
sort(data, IMPROVED_QUICK); F{.\i*$  
} mz+UkA'  
private static String[] name={ fs?H  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" )ki Gk}2  
}; ^`B;SSV  
=H3tkMoi2  
private static Sort[] impl=new Sort[]{ Oi zj |'  
new InsertSort(), z1]nC]2  
new BubbleSort(), ;rF[y7\  
new SelectionSort(), r<4j;"lQK  
new ShellSort(), Oet+$ b  
new QuickSort(), ,<Z,-0S  
new ImprovedQuickSort(), \7%#4@;?  
new MergeSort(), wZN_YFwQ  
new ImprovedMergeSort(), nzaA_^`mB  
new HeapSort() \A,zwdt P  
}; 8\^A;5  
!^ad{# |X  
public static String toString(int algorithm){ 7BL)FJ]UR]  
return name[algorithm-1]; TQmrL  
} }i,r{Y]s]  
.6T0d 4,1  
public static void sort(int[] data, int algorithm) { %<x! mE x  
impl[algorithm-1].sort(data); % 1$#fxR  
} P%H  Dz  
Fe4>G8uuwn  
public static interface Sort { ca,W:9#.xn  
public void sort(int[] data); IRwtM'%0  
} JSi0-S[Y{  
k_!e5c  
public static void swap(int[] data, int i, int j) { fIl!{pv[  
int temp = data; ]ly" K!1,  
data = data[j]; GGhk~H4OP  
data[j] = temp; i#hFpZ6u  
} ~ !!\#IX  
} dJ m9''T')  
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