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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。 <,Gjo]z  
插入排序: ['(qeS@5O  
k1[`2k:Hk  
package org.rut.util.algorithm.support; e ,XT(KY  
Q*1Avy6]  
import org.rut.util.algorithm.SortUtil; li3X}  
/** (fc_V[(m"  
* @author treeroot UHJro9  
* @since 2006-2-2 ZV Ko$q:F  
* @version 1.0 65B&>`H~  
*/ Ds=d~sNu  
public class InsertSort implements SortUtil.Sort{ w[2E:Nj  
1sUgjyGQ  
/* (non-Javadoc) zRh)q,Dt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $zz4A~   
*/ 5P*jGOg.  
public void sort(int[] data) { 319 4]  
int temp; QP%AJ[3ea%  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); .9DhD=8aIO  
} , -])[u  
} OfLj 4H 6Q  
} 6T"5,Q</h  
FkaQVT  
} )m-(-I  
Z){fie4WM  
冒泡排序: iLdUus!  
x+sSmW  
package org.rut.util.algorithm.support; =j_4!^  
!rx5i  
import org.rut.util.algorithm.SortUtil; nJH'^rO!C  
;&b=>kPlZ  
/** 6/a%%1c1  
* @author treeroot KYhL}C+  
* @since 2006-2-2 o &b\bK%E  
* @version 1.0 '<"%>-^Gn  
*/ i [/1AI  
public class BubbleSort implements SortUtil.Sort{ |}l/6WHB  
`[=/f=Q}  
/* (non-Javadoc) mv<cyWp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?zo7.R-Vac  
*/ }m!T~XR</  
public void sort(int[] data) { x}C$/7^  
int temp; (>Sy,  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 1\jj3Y'i'  
if(data[j] SortUtil.swap(data,j,j-1); I/h(*~/  
} JWt@vf~  
} #,j m3M qj  
} tjZS:@3 Z  
} %*L8W*V  
j%!xb><  
} IFSIQ q  
7vqE @;:dt  
选择排序: yr zyus  
Dmtsu2o  
package org.rut.util.algorithm.support; %)}_OXWf:  
ZA4sEVHW  
import org.rut.util.algorithm.SortUtil; ^]LWcJ?"^!  
CIR2sr0a  
/** h#h)=;  
* @author treeroot ud(w0eX  
* @since 2006-2-2 B)DtJ f  
* @version 1.0 wh]v{Fi'  
*/ <.|]%7  
public class SelectionSort implements SortUtil.Sort { -P]onD  
O|;|7fCB\  
/* 6%VRQ#g!  
* (non-Javadoc) :2L-Nf  
* 7r3EMX\#Qm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <l)I% 1T_c  
*/ "jq F  
public void sort(int[] data) { &>@EfW](  
int temp; m]++ !  
for (int i = 0; i < data.length; i++) { Xp^71A?>  
int lowIndex = i; btf]~YN  
for (int j = data.length - 1; j > i; j--) { 9@(V!G  
if (data[j] < data[lowIndex]) { #1>c)_H  
lowIndex = j; yV@~B;eW0  
} xqVIw!J?/}  
} U,9=&"e b  
SortUtil.swap(data,i,lowIndex); Jpe\  
} ECOzquvM  
} 4!+IsT  
v~O2y>8Z  
} oFJx8XU  
%tz foiJ%P  
Shell排序: orF8%  
|>p?Cm  
package org.rut.util.algorithm.support; q-0( Wx9|  
CwzDkr&QC_  
import org.rut.util.algorithm.SortUtil; cZ/VMQEr  
j|WN!!7  
/** 2K(zYv54  
* @author treeroot p\|*ff0  
* @since 2006-2-2 LwCf}4u"  
* @version 1.0 M[dJQ (  
*/ _K>YB>W}7  
public class ShellSort implements SortUtil.Sort{ "IdN*K  
9<!Ie^o?  
/* (non-Javadoc) )e\IdKl=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XgZ.UT  
*/ XCZNvLG  
public void sort(int[] data) { /`B:F5r  
for(int i=data.length/2;i>2;i/=2){ y}lqF8s  
for(int j=0;j insertSort(data,j,i); 8z"*CJ@  
} *+cW)klm  
} &14Er,K  
insertSort(data,0,1); %,5_]bGvb  
} xCiq;FFR  
8DJoQl9  
/** pj'[ H  
* @param data v+`gQXJ"G  
* @param j .37Jrh0Iv  
* @param i zC\L-i>G  
*/ !.5,RIf  
private void insertSort(int[] data, int start, int inc) { 4T:@W C  
int temp; e/!xyd  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); d#3E'8  
} w'D=K_h  
} dX~$#-Ad86  
} 5@@ilvwzz  
q vGkTE  
} B"I^hrQ  
V> @+&q  
快速排序:  HO =\  
0=KyupwXC  
package org.rut.util.algorithm.support; ;bt%TxuKb  
5XA{<)$  
import org.rut.util.algorithm.SortUtil; z0-`D.D@\  
s(Llz]E~ZX  
/** io(Rb\#"  
* @author treeroot /aD3E"Op  
* @since 2006-2-2 9TbRrS09  
* @version 1.0 *5|q_K Pt  
*/ ;JQ;LbEn  
public class QuickSort implements SortUtil.Sort{ G$$y\e$  
4brKAqg.  
/* (non-Javadoc) dJD8c 2G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4XXuj  
*/ BO)Q$*G~JD  
public void sort(int[] data) { .:=G=v=1  
quickSort(data,0,data.length-1); .+ g8zbD4  
} mXXU{IwUe  
private void quickSort(int[] data,int i,int j){ w0L+Sj db  
int pivotIndex=(i+j)/2; ^8eu+E.{  
file://swap avo[~ `.  
SortUtil.swap(data,pivotIndex,j); "xKykSk  
S 7 *LV;  
int k=partition(data,i-1,j,data[j]); s xp>9&  
SortUtil.swap(data,k,j); '9d] B^)F  
if((k-i)>1) quickSort(data,i,k-1); 8C>\!lW"  
if((j-k)>1) quickSort(data,k+1,j); HTU?hbG(  
ev;R; 0<  
} "nEfk{g  
/** <*5 5d2  
* @param data -3On^Wj]  
* @param i ii :E>O(0B  
* @param j ;X XB^,  
* @return of k@.TmO  
*/ R9`37(c9+  
private int partition(int[] data, int l, int r,int pivot) { ' (1`iQ;  
do{ iy\ 6e k1  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); .~t.B!rVSB  
SortUtil.swap(data,l,r); {gwJ>]z"e  
} Xe7/  
while(l SortUtil.swap(data,l,r); YA[\|I33  
return l; H!yqIh  
} /f0*NNSat-  
QlCs ,bT  
} VuWBWb?0Q  
R+y 9JE  
改进后的快速排序: )D"E]  
<UC_QPA\  
package org.rut.util.algorithm.support; {WoS&eL  
NP^j5|A*"  
import org.rut.util.algorithm.SortUtil; Yy 3g7!K5E  
:@8N${7`$A  
/** 14 Toi  
* @author treeroot q71~Y:7f  
* @since 2006-2-2 i~0x/wSl_  
* @version 1.0 3"HW{=  
*/ $\A=J  
public class ImprovedQuickSort implements SortUtil.Sort { LaCVI  
EAPjQA-B?  
private static int MAX_STACK_SIZE=4096; ]n9gnE  
private static int THRESHOLD=10; e;G}T%W  
/* (non-Javadoc) >`(]&o6<$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VW/ICX~"d  
*/ &K.js  
public void sort(int[] data) { \7U'p:h=U  
int[] stack=new int[MAX_STACK_SIZE]; %!r@l7<  
7U, [Ruu  
int top=-1; b>Em~NMu_  
int pivot; /_l$h_{DH  
int pivotIndex,l,r; AkE(I16Uy~  
bs9X4n5  
stack[++top]=0; +9!=pRq  
stack[++top]=data.length-1; 'NYW`,  
j}fu|-  
while(top>0){ 9H#;i]t&  
int j=stack[top--]; J':x]_;  
int i=stack[top--]; O-jpS?@  
3JJEj1O  
pivotIndex=(i+j)/2; @zGz8IF  
pivot=data[pivotIndex]; UHT2a9rG  
O=E?m=FR"  
SortUtil.swap(data,pivotIndex,j); ,z0~VS:g8  
'YTSakNJ}  
file://partition 1@W*fVn  
l=i-1; 64R~ $km  
r=j; ly~tB LH}  
do{ zz_(*0,Qcr  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 0hr4}FL8  
SortUtil.swap(data,l,r); dn}'B%  
} NA;OT7X[  
while(l SortUtil.swap(data,l,r); SW WeN#Q  
SortUtil.swap(data,l,j); w1J%%//(h  
<A`zK  
if((l-i)>THRESHOLD){ V+Y;  
stack[++top]=i; fDD^?/^  
stack[++top]=l-1; P4{!/&/  
} )N'rYS' 9  
if((j-l)>THRESHOLD){ sRK oM  
stack[++top]=l+1; >o,l/# z  
stack[++top]=j; VteMsL/H  
} 15\k/[3 #  
DICS6VG}  
} 5|_El/G  
file://new InsertSort().sort(data); 3K{G=WE$  
insertSort(data); 6s(.u l  
} %&}gt+L(M  
/** tx_h1[qi  
* @param data h= Mmd  
*/ 'LW~_\  
private void insertSort(int[] data) { eB2a1<S&@  
int temp; R.P|gk  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); q'1 86L87  
} 8ZL9>"%l  
} X(M|T]`b:  
} G{]tB w  
>1S39n5z.  
} U]}f]GK  
>#[,OU}N  
归并排序: o/4U`U)Q0v  
(t_%8Eu  
package org.rut.util.algorithm.support; B6J <  
>&`;@ZOH  
import org.rut.util.algorithm.SortUtil; ;5!M+nk  
U#>K(  
/** 'Hv=\p4$1  
* @author treeroot teX)!N [  
* @since 2006-2-2 y^[?F>wB  
* @version 1.0 :[d *  
*/ GMOnp$@H^s  
public class MergeSort implements SortUtil.Sort{ =";G&)H-  
2`P=ekF]  
/* (non-Javadoc) `PS^o#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *c>B,  
*/ zr@H Yl  
public void sort(int[] data) { <:ptNGR  
int[] temp=new int[data.length]; R?5v //[  
mergeSort(data,temp,0,data.length-1); `/RcE.5n\@  
} g(QT"O!dY  
6BH P#B2j  
private void mergeSort(int[] data,int[] temp,int l,int r){ @5tGI U;1  
int mid=(l+r)/2; %Fp 1c K  
if(l==r) return ; ,.]1N:   
mergeSort(data,temp,l,mid); J7FzOwd1h  
mergeSort(data,temp,mid+1,r); f=paa/k0  
for(int i=l;i<=r;i++){ KybrSa  
temp=data; G3${\'<  
} hF`Qs  
int i1=l; K'U8ft*_  
int i2=mid+1; 2}0S%R(  
for(int cur=l;cur<=r;cur++){ /vNHb _-  
if(i1==mid+1) ' o(7@   
data[cur]=temp[i2++]; 2#)z%K6T  
else if(i2>r) ioJ|-@! #o  
data[cur]=temp[i1++]; #,CK;h9jy!  
else if(temp[i1] data[cur]=temp[i1++]; V)jF]u~g  
else E'+?7ZGWj  
data[cur]=temp[i2++]; Zonr/sA~  
} IutU ~%wv  
} @XQItc<  
mRT$@xa]J  
} ^{g('BQx  
"Ta"5XW  
改进后的归并排序: iCIU'yI  
Ye]-RN/W  
package org.rut.util.algorithm.support; [yx8?5  
%_. fEFy07  
import org.rut.util.algorithm.SortUtil; \'.|7{Xu  
s6(bTO.  
/** `G "&IQ8.  
* @author treeroot H>Q X?>j  
* @since 2006-2-2 75W@B}dZd  
* @version 1.0 r^T+ I3  
*/ CfEACH4_  
public class ImprovedMergeSort implements SortUtil.Sort { '7JM/AcC#K  
-)9aY.  
private static final int THRESHOLD = 10; 0mR^%+~  
cP^c}e*;NS  
/* w,1&s}; g\  
* (non-Javadoc) .f-s+J&ED  
* }9~U5UXWU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c1ptN  
*/ L "5;<  
public void sort(int[] data) { M,dp;  
int[] temp=new int[data.length]; g=e~YM85  
mergeSort(data,temp,0,data.length-1); =^mBj?(V7  
} h@jk3J9^  
@n^2UJ  
private void mergeSort(int[] data, int[] temp, int l, int r) { tQ,3nI!|xF  
int i, j, k; gt\*9P   
int mid = (l + r) / 2; tvcM< e20  
if (l == r) D]?yGI_  
return; F*p@hl  
if ((mid - l) >= THRESHOLD) 1eOQ;#OV  
mergeSort(data, temp, l, mid); )-^[;:B\k"  
else W%@0Ym `7  
insertSort(data, l, mid - l + 1); )St`}qu;  
if ((r - mid) > THRESHOLD) *:"p*qV*  
mergeSort(data, temp, mid + 1, r); 4u E|$  
else iC4rzgq  
insertSort(data, mid + 1, r - mid); 0aa&13!5  
ImsyyeY]  
for (i = l; i <= mid; i++) { ypWhH  
temp = data; -\~HAnh  
} ~; vt{pk  
for (j = 1; j <= r - mid; j++) { IVso/!   
temp[r - j + 1] = data[j + mid]; md;jj^8zj  
} Bk@&k}0  
int a = temp[l]; Np@RK1}  
int b = temp[r]; ]ASTw(4  
for (i = l, j = r, k = l; k <= r; k++) { ?U3~rro!  
if (a < b) { ]iry'eljy  
data[k] = temp[i++]; e]@ B61lc  
a = temp; ^_t7{z%sA[  
} else { jIjW +D`  
data[k] = temp[j--]; +[7 DRT:  
b = temp[j]; K>_~|ZN1C8  
} TJUYd9O4[  
} PQXCT|iJ  
} +6s6QeNS8  
]23+ d/  
/** ZVDi;   
* @param data & Tkl-{I  
* @param l u-R;rf5%k  
* @param i 1AQ3<  
*/ I]Ws   
private void insertSort(int[] data, int start, int len) { 'o|=_0-7W  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); (p(-E  
} :czUOZ_  
} "c*#ZP  
} 0}9  
} #Yx /ubg6  
c/}-pZn<  
堆排序: nU/x,W[}  
rw%OA4>  
package org.rut.util.algorithm.support; LCMn9I  
p4@0Dz`Q  
import org.rut.util.algorithm.SortUtil; ;CDa*(e  
~ep^S^V+  
/**  t: 03  
* @author treeroot ,'byJlw_pv  
* @since 2006-2-2 zcOG[-  
* @version 1.0 q OV$4[r  
*/ VLC=>w\,  
public class HeapSort implements SortUtil.Sort{ 22R ,  
rTzXRMv@o  
/* (non-Javadoc) QeQxz1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z'}z4^35,  
*/ @+hO,WXN  
public void sort(int[] data) { b&!x.+d-z  
MaxHeap h=new MaxHeap(); 9>ML;$T&  
h.init(data); P.3kcZ   
for(int i=0;i h.remove(); |`O210B@  
System.arraycopy(h.queue,1,data,0,data.length); EO\- J-nM  
} & sgzSX  
QJ,~K&?  
private static class MaxHeap{ U]"6KS   
t:%u4\nZ;  
void init(int[] data){ dC?l%,W  
this.queue=new int[data.length+1]; 9PG3cCr?  
for(int i=0;i queue[++size]=data; (t"e#b(:  
fixUp(size); f<v Z4 IU  
} / gP"X1.  
} UVD*GsBk  
6t'vzcQs  
private int size=0; ; Z2  
;eC8| Xz  
private int[] queue; ,EH^3ODD  
/U= ?D(>x  
public int get() { &X)^G#  
return queue[1]; <AB({(  
} 5 ~YaXh^  
HjT-5>I7f  
public void remove() { iz2;xa*  
SortUtil.swap(queue,1,size--); 9n;6;K#  
fixDown(1); v K!vA-7  
} \xX'SB#.l  
file://fixdown )| F O>  
private void fixDown(int k) { A[H"(E#k  
int j; @VnK/5opS  
while ((j = k << 1) <= size) { rhC x&L  
if (j < size %26amp;%26amp; queue[j] j++; 2[1lwV  
if (queue[k]>queue[j]) file://不用交换 7*@BCu6  
break; H'jo 3d~+  
SortUtil.swap(queue,j,k); F+9(*|x%  
k = j; j5m]zh5\J=  
} ye`-U?7.  
} 'e8O \FOf  
private void fixUp(int k) { u(g9-O  
while (k > 1) { EO"G(v  
int j = k >> 1; ( #rhD}  
if (queue[j]>queue[k]) U?j[ 8z  
break; c Sktm&SP  
SortUtil.swap(queue,j,k); 5 &s<&h  
k = j; *_eY +\j  
} XyD*V;.E  
} {=,+;/0  
R@2*Lgxz~  
} P=.T|l1  
^TAf+C^Ry  
} gqDSHFm:  
ZQ[s/  
SortUtil: /H*n(d  
-qpe;=g&f  
package org.rut.util.algorithm;  #{zF~/Qq  
T26'b .  
import org.rut.util.algorithm.support.BubbleSort; GhW{6.^  
import org.rut.util.algorithm.support.HeapSort; K&up1nZ@(  
import org.rut.util.algorithm.support.ImprovedMergeSort; h%!,|[|  
import org.rut.util.algorithm.support.ImprovedQuickSort; ~/;shs<9EM  
import org.rut.util.algorithm.support.InsertSort; `Lr|KuFN  
import org.rut.util.algorithm.support.MergeSort; @O HsM?nW  
import org.rut.util.algorithm.support.QuickSort; Gy!bPVe  
import org.rut.util.algorithm.support.SelectionSort; h/7_IuD  
import org.rut.util.algorithm.support.ShellSort; a4eE/1  
) -@Dh6F  
/** #g]eDU-[  
* @author treeroot hv)d  
* @since 2006-2-2 mf\@vI  
* @version 1.0 ZC9S0Z  
*/ CFG(4IMx  
public class SortUtil { tTPjCl  
public final static int INSERT = 1; 0|FQIhVuY  
public final static int BUBBLE = 2; ,m;G:3}48  
public final static int SELECTION = 3; E*8 3N@i  
public final static int SHELL = 4; m>+ e;5  
public final static int QUICK = 5; /}=cv>S5V  
public final static int IMPROVED_QUICK = 6; EkEQFd 5g  
public final static int MERGE = 7; > 7 qZ\#  
public final static int IMPROVED_MERGE = 8; p&ZLd`[  
public final static int HEAP = 9;  S=X_7V  
yOyuMZo6  
public static void sort(int[] data) { Y |aaZ|+  
sort(data, IMPROVED_QUICK); VX e7b  
} % r0AhWv  
private static String[] name={ Hf9F:yH  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" zJG=9C?  
}; 5>&C.+A 9  
^']*UD;  
private static Sort[] impl=new Sort[]{ td|O#R  
new InsertSort(), XO}v8nWV  
new BubbleSort(), w s7LDY&(  
new SelectionSort(), w>&g'  
new ShellSort(), RNb"O{3  
new QuickSort(), PRN%4G  
new ImprovedQuickSort(), e# KP3Lp  
new MergeSort(), :jGgX>GG  
new ImprovedMergeSort(), TTz_w-68  
new HeapSort() ;%4N@Z  
}; %^bN^Sq -  
y@\J7 h:  
public static String toString(int algorithm){ `,)%<}  
return name[algorithm-1]; 9~}.f1z  
} 6<9gVh<=w  
xd^9R<  
public static void sort(int[] data, int algorithm) { og|~:>FmJo  
impl[algorithm-1].sort(data); D*!9K8<o  
} "K#zY~>L  
w'<"5F`  
public static interface Sort { iTJE:[W"y  
public void sort(int[] data); h2vD*W  
} D@yu2}F{IY  
!k8j8v&  
public static void swap(int[] data, int i, int j) { )%~<EJ*&Z  
int temp = data; R<e ~Cb-  
data = data[j]; U$j?2|v-x  
data[j] = temp; Dh .<&ri   
} $Zf]1?|xa  
} )"f*Mp  
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