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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。 7 [0L9\xm  
插入排序: }f2r!7:x  
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package org.rut.util.algorithm.support; + nF'a(  
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import org.rut.util.algorithm.SortUtil; oY, %Iq  
/** Nz)l<S9>  
* @author treeroot u{L!n$D7  
* @since 2006-2-2 <_Q1k>  
* @version 1.0 d^`?ed\1  
*/ %j7XEh<'  
public class InsertSort implements SortUtil.Sort{ @V!r"Bkg.  
bV"G~3COy  
/* (non-Javadoc) p) +k=b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n0is\ZK 0  
*/ m)oJFF  
public void sort(int[] data) { [n}T|<  
int temp; 4WK3.6GN  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {5  sO  
} $q 2D+_  
} q:g2Zc'Y~W  
} f7}*X|_Y  
mx=BD'  
} dUsx vho  
h yv2SxP*  
冒泡排序: 2PG [7u^  
"Iix )Ue  
package org.rut.util.algorithm.support; `jOX6_z?I  
P~ &$l2  
import org.rut.util.algorithm.SortUtil; rXHv`k y  
b5^OQH{v  
/** )5 R=Z<  
* @author treeroot k?7 X3/O  
* @since 2006-2-2 )rixMl &[  
* @version 1.0 C"{k7yT  
*/ H$6`{lx,  
public class BubbleSort implements SortUtil.Sort{ KZeQ47|  
0Zg%+)iy@  
/* (non-Javadoc) '}9JCJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) //aF5 :Y#  
*/ Gw1@KKg  
public void sort(int[] data) { =)7s$ p  
int temp; LcE+GC  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ."Y e\>k  
if(data[j] SortUtil.swap(data,j,j-1); AQ ='|%  
} \Acqr@D  
} Pfs;0}h5  
} >+[&3u  
} 2;?I>~  
)YqXRm  
} FLY Ca  
,`aq+K  
选择排序: FKmFo^^0  
 Sr?#S  
package org.rut.util.algorithm.support; JwXT%op9RP  
`[n(" 7,  
import org.rut.util.algorithm.SortUtil; % $DI^yS  
+[tP_%/r'^  
/** uyY|v$FM  
* @author treeroot ^7Fh{q4IE  
* @since 2006-2-2 5+wAzVA  
* @version 1.0 x]33LQ1]  
*/ Cn[0(s6  
public class SelectionSort implements SortUtil.Sort { 7>~5jYP  
{,L+1h  
/* jkvgoxY  
* (non-Javadoc) )[Yv?>ib  
* 2rZx Sg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,tg0L$qC  
*/ &ZQJ>#~j^  
public void sort(int[] data) { ~ _!F01s  
int temp; k%G1i-] 4  
for (int i = 0; i < data.length; i++) { o-Ga3i 8  
int lowIndex = i; Tq~=TSD  
for (int j = data.length - 1; j > i; j--) { vz!s~cAt  
if (data[j] < data[lowIndex]) { h3;bxq!q  
lowIndex = j; k|!EDze43?  
} O &-wxJ]S  
} R`~z0 d.  
SortUtil.swap(data,i,lowIndex); 9cj9SB4  
} LA)[ip4  
} |u;v27  
qQH]`#P  
} \~_9G{2?  
f@c`8L@g  
Shell排序: ~b2wBs)r  
wLH] <k  
package org.rut.util.algorithm.support; nxl[d\ap+n  
VZl6t;cn  
import org.rut.util.algorithm.SortUtil; Qg<(u?7N  
.?hP7;hhI  
/** 1&U>,;]*  
* @author treeroot cx0*X*  
* @since 2006-2-2 BGu?<bET  
* @version 1.0 a 7,C>%I  
*/ j ku}QM^  
public class ShellSort implements SortUtil.Sort{ g"> {9YE  
# m *J&  
/* (non-Javadoc) Kc^;vT>3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LoGVwRmoC  
*/ +PuPO9jKO@  
public void sort(int[] data) { #&7}-"Nd  
for(int i=data.length/2;i>2;i/=2){ 0a"c2J  
for(int j=0;j insertSort(data,j,i); TG5XSy  
} P->y_4O  
} ~((w?Yy"v  
insertSort(data,0,1); J":,Vd!*-  
} =%BZ9,l  
\R;`zuv   
/** =pC3~-;3  
* @param data c?,i3s+2Y  
* @param j 4tS.G  
* @param i E}tqQ*u  
*/ I}vmU^Y>  
private void insertSort(int[] data, int start, int inc) { 9,r rQQD_  
int temp; qm8&*UuKJ  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); +@/"%9w  
} |UxG$M(  
} `WH"%V:"Q  
} .8G@%p{,  
,5*eX  
} L~NbdaO  
8UVmv=T  
快速排序: ;IokThI  
sK5r$Dbr  
package org.rut.util.algorithm.support; a)'5Nw9*  
%&Q$dzgb_  
import org.rut.util.algorithm.SortUtil; aWY gR  
!! ? Mw  
/** BFOq8}fX2  
* @author treeroot jE/AA!DC#  
* @since 2006-2-2 }-sdov<<  
* @version 1.0 e;[F\ov %  
*/ Pw61_ZZ4B\  
public class QuickSort implements SortUtil.Sort{ @>U-t{W  
8Bjib&im  
/* (non-Javadoc) c. 2).Jt,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &@yo;kB  
*/ W!>.$4Q9  
public void sort(int[] data) { k|H:  
quickSort(data,0,data.length-1); 9c6gkt9eB  
}  #c66)  
private void quickSort(int[] data,int i,int j){ |YY_^C`"-  
int pivotIndex=(i+j)/2; ]f({`&K5  
file://swap UaB @  
SortUtil.swap(data,pivotIndex,j); 0ok-IHE<  
vTx2E6  
int k=partition(data,i-1,j,data[j]); SV~~Q_U9  
SortUtil.swap(data,k,j); PJL=$gBgKk  
if((k-i)>1) quickSort(data,i,k-1); Rw:*'1  
if((j-k)>1) quickSort(data,k+1,j); HEM9E&rL  
ssN6M./6  
} @0u~?!g@  
/** DS[#|  
* @param data n@,G8=J?  
* @param i e8#h3lxJ`  
* @param j Yd~X77cv  
* @return F ;2w1S^  
*/ cj'}4(  
private int partition(int[] data, int l, int r,int pivot) { Nu?-0>  
do{ K%RxwM  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); # a8B/-  
SortUtil.swap(data,l,r);  VN\W]jT  
} @-!}BUs?  
while(l SortUtil.swap(data,l,r); suzZdkMA  
return l; 65aK2MS@  
} !74S  
W|g4z7Pb  
} 7M<'/s  
F6{bjv2A  
改进后的快速排序: /Id%_,}Kb  
<,e+ kL{  
package org.rut.util.algorithm.support; v63"^%LX  
?I~()]k5  
import org.rut.util.algorithm.SortUtil; cLsV`@J(k  
@8pp EFw  
/** `6]%P(#a  
* @author treeroot 1R1 z  
* @since 2006-2-2 n' q4  
* @version 1.0 ]X ?7ZI^  
*/ GfmI<{da  
public class ImprovedQuickSort implements SortUtil.Sort { .G#8a1#  
+N:o-9  
private static int MAX_STACK_SIZE=4096; zM(vr"U   
private static int THRESHOLD=10; X6@WwM~qz  
/* (non-Javadoc) ~3WF,mW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OZ~5*v  
*/ %~E ?Z!_W  
public void sort(int[] data) { UZJCvfi  
int[] stack=new int[MAX_STACK_SIZE]; Wg<(ms dj  
h_+dT  
int top=-1; s)6U_  
int pivot; xk5@d6Y{r  
int pivotIndex,l,r; HV{wI1  
&p4&[H?  
stack[++top]=0; 7KAO+\)H^Y  
stack[++top]=data.length-1; uJC~LC N  
9{5&^RbCp  
while(top>0){ U$WxHYo  
int j=stack[top--]; zU gE~  
int i=stack[top--]; |6K+E6H  
Z:sg}  
pivotIndex=(i+j)/2; <YhB8W9 P  
pivot=data[pivotIndex]; 0dGAP  
e'~J,(fB  
SortUtil.swap(data,pivotIndex,j); 5?3Me59  
b2OQtSr a  
file://partition =IQ5<;U3  
l=i-1; #AL=f'2=f  
r=j; DkvF5c&  
do{ W"}M1o  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ~nh:s|l6%M  
SortUtil.swap(data,l,r); pxCK;]  
} S/e2P|}  
while(l SortUtil.swap(data,l,r); C(#u[8  
SortUtil.swap(data,l,j); %}Ss,XJ  
x:7b/ j-  
if((l-i)>THRESHOLD){ ?&63#B,iZ  
stack[++top]=i; /tf5Bv'<  
stack[++top]=l-1; !O:y@  
} y}My.c  
if((j-l)>THRESHOLD){ pEIRh1  
stack[++top]=l+1; GS a [ oh  
stack[++top]=j; )GM41t1i  
} `Nb[G)Xh  
XkXHGDEf1  
} T>2[=J8U  
file://new InsertSort().sort(data); B"TAjB& *  
insertSort(data); ymx>i~>7J  
} ZaV8qAsP  
/** iw8yb;|z;A  
* @param data UBaAx21x  
*/ zxbpEJzpn  
private void insertSort(int[] data) { MHX?@. v  
int temp; i]6`LqlO  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ->g*</  
} '%dfz K*Z  
} g1W.mAA3B  
} #><.oreXq  
V-Sd[  
} LYz.Ci}  
vdx0i&RiL  
归并排序: g!?:Ye`5  
\eT5flC  
package org.rut.util.algorithm.support; zMm#Rhn  
17oa69G  
import org.rut.util.algorithm.SortUtil; !Wy6/F@Z  
|:xYE{*)H  
/** k@f g(}6  
* @author treeroot OwH81#   
* @since 2006-2-2 t<z`N-5*  
* @version 1.0 c#Sa]n  
*/ r&R B9S@*h  
public class MergeSort implements SortUtil.Sort{ El[)?+;D  
cDFO;Dr  
/* (non-Javadoc) %)|9E>fP]N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b F"G[pD  
*/ Crho=RJPR  
public void sort(int[] data) { %|g>%D3Z?  
int[] temp=new int[data.length];  -QM: q  
mergeSort(data,temp,0,data.length-1); Mc09ES  
} 5Iy;oZ  
K]s[5  
private void mergeSort(int[] data,int[] temp,int l,int r){ wsIW |@  
int mid=(l+r)/2; &,c``z  
if(l==r) return ; ZUVA EH%  
mergeSort(data,temp,l,mid); z(_Ss@ $  
mergeSort(data,temp,mid+1,r); 2jg-  
for(int i=l;i<=r;i++){ P@$/P99  
temp=data; G-xDN59K  
} P"y`A}Bx  
int i1=l; / ';0H_  
int i2=mid+1; E9Np0M<  
for(int cur=l;cur<=r;cur++){ zR1^I~ %  
if(i1==mid+1) @z4*.S&tz  
data[cur]=temp[i2++]; ;V*R*R  
else if(i2>r) }XV+gyG=@  
data[cur]=temp[i1++]; #(#Wv?r6  
else if(temp[i1] data[cur]=temp[i1++]; Z&1T  
else ysxb?6  
data[cur]=temp[i2++]; ko.(pb@+  
} V5sg#|&  
} =j5MFX.-o  
-Zf@VW,NI  
} s+,OxRVw(  
&]e'KdXF  
改进后的归并排序: "?ucO4d  
DnCP aM4%  
package org.rut.util.algorithm.support; iYORu 3  
Tl$ [4heE  
import org.rut.util.algorithm.SortUtil; NdtB1b  
Co (.:z~  
/** Q&wB$*u  
* @author treeroot C([phT;  
* @since 2006-2-2 3L833zL  
* @version 1.0 e+$p9k~  
*/ *.sVr7=j  
public class ImprovedMergeSort implements SortUtil.Sort { v0-cd  
42e|LUZg  
private static final int THRESHOLD = 10; S M0~fAtE  
tZ=E')!\  
/* \ e\?I9  
* (non-Javadoc) {QcLu"?c  
* Qy^1*j<@&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4L ;% h  
*/ WHsgjvh"  
public void sort(int[] data) { E*.{=W }C  
int[] temp=new int[data.length]; e,F1Xi #d  
mergeSort(data,temp,0,data.length-1); k9:{9wW  
} (]0%}$Fo  
ORyE`h  
private void mergeSort(int[] data, int[] temp, int l, int r) { NO|KVZ~  
int i, j, k; iF-6Y0~8  
int mid = (l + r) / 2; [Sr,h0h6  
if (l == r) 8YZbP5'  
return; U=DmsnD,  
if ((mid - l) >= THRESHOLD) A )^`?m3  
mergeSort(data, temp, l, mid); GN ]cDik  
else ]ndvt[4L  
insertSort(data, l, mid - l + 1); 9xO#tu]  
if ((r - mid) > THRESHOLD) $ACvV "b  
mergeSort(data, temp, mid + 1, r); iYDEI e  
else [`{Z}q&  
insertSort(data, mid + 1, r - mid); ,TXTS*V?  
bvv|;6  
for (i = l; i <= mid; i++) { xC*6vH]?  
temp = data; T*#/^%HSG  
} @ zs'Y8  
for (j = 1; j <= r - mid; j++) { ,4zmb`dP<  
temp[r - j + 1] = data[j + mid]; c_-drS  
} }4Tc  
int a = temp[l]; YVYu:}e3)  
int b = temp[r]; $}J5xG,}$  
for (i = l, j = r, k = l; k <= r; k++) { }Mf!-g  
if (a < b) { BGOuDKz9C  
data[k] = temp[i++]; :"=ez<t  
a = temp; e\Y*F  
} else { mz @T  
data[k] = temp[j--]; RIb4!!',c  
b = temp[j]; )-0kb~;|  
} $nb[G$  
} 3a?o3=  
} p[hZ@f(z  
x^kp^ /f  
/** &xa(BX%,c  
* @param data .q%WuQw  
* @param l B8B; y^b>i  
* @param i b4E:Wn9x  
*/ Y' %^NP}o  
private void insertSort(int[] data, int start, int len) { G?E oPh^m  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); (yF:6$:#  
} zA$k0p  
} E=e*VEjy  
} l^|UCgRn  
} Sz^ veh?  
@\|_  
堆排序: R_sr?V|"  
6^]!gR#B  
package org.rut.util.algorithm.support; E"+QJ~!  
Svondc 4  
import org.rut.util.algorithm.SortUtil; LXbP 2  
t?}zdI(4  
/** ^.1c{0Y^0  
* @author treeroot 7on.4/;M  
* @since 2006-2-2 ?Cl%{2omO  
* @version 1.0 |K.mP4CKY  
*/ Qa.<K{m#?  
public class HeapSort implements SortUtil.Sort{ EQf[,  
9[G[$c  
/* (non-Javadoc) [x9KVd ^d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1+9W+$=h2  
*/ POvP]G9'"  
public void sort(int[] data) { Z8rvWH9  
MaxHeap h=new MaxHeap(); Pa~)"u 8  
h.init(data); ~(Q)"s\1I  
for(int i=0;i h.remove(); vg3=8>#  
System.arraycopy(h.queue,1,data,0,data.length); W_kHj}dj,p  
} =bHD#o|R  
`glBV`?^  
private static class MaxHeap{ @xbQYe%J  
A9wh(P0\  
void init(int[] data){ !q9+9 *6  
this.queue=new int[data.length+1]; 2 dAB-d:k  
for(int i=0;i queue[++size]=data; ~kZ G{  
fixUp(size); T(t+ iv  
} A<1hOSCz\  
} n}'=yItVL1  
vU767/  
private int size=0; 95YL]3V  
%] >KvoA  
private int[] queue; pgOQIzu  
AQ_|:  
public int get() { 73xAG1D$r  
return queue[1]; G*-b}f  
} T;,cN7>>O  
Cq'KoN%nQ  
public void remove() { _>| =L W@7  
SortUtil.swap(queue,1,size--); R~)\3] "2m  
fixDown(1); @7?#Y|`  
} DpUbzr41+k  
file://fixdown #7MUJY+ 9  
private void fixDown(int k) { KTP8?Q"n0  
int j; "J4WzA%i  
while ((j = k << 1) <= size) { Ed_N[ I   
if (j < size %26amp;%26amp; queue[j] j++; D'J 0wT#  
if (queue[k]>queue[j]) file://不用交换 CbwJd5tk  
break; #wV8X`g  
SortUtil.swap(queue,j,k); a'2$nbp}  
k = j; B)qWtMZx  
} k&,~qoU  
} Q aS\(_  
private void fixUp(int k) { 8=gjY\Dp  
while (k > 1) { M+w=O!dq  
int j = k >> 1; ptU \[Tq  
if (queue[j]>queue[k])  *T5!{  
break; w]]8dz  
SortUtil.swap(queue,j,k); UPG9)aF  
k = j; dHv68*^\'  
} =~=*&I4Dp  
} >[_f3;P  
d4?Mi2/jF  
} 22.8PO0  
Bs O+NP  
} wM2*#  
K%^V?NP*{Z  
SortUtil: %O!v"Xh  
%`&2+\`  
package org.rut.util.algorithm; ,M^P!  
l]8D7(g  
import org.rut.util.algorithm.support.BubbleSort; m+lvl  
import org.rut.util.algorithm.support.HeapSort; "x3lQ  
import org.rut.util.algorithm.support.ImprovedMergeSort; )XYv}U   
import org.rut.util.algorithm.support.ImprovedQuickSort; fSs4ZXC  
import org.rut.util.algorithm.support.InsertSort; yF"1#{*y  
import org.rut.util.algorithm.support.MergeSort; =y0C1LD+  
import org.rut.util.algorithm.support.QuickSort; B2C$N0R#  
import org.rut.util.algorithm.support.SelectionSort; JV]^zW  
import org.rut.util.algorithm.support.ShellSort; OH">b6>\  
?XA2&  
/** Z yE `/J'  
* @author treeroot DV<` K$ET  
* @since 2006-2-2 cd$m25CxC  
* @version 1.0 a{ ?`t|  
*/ {TX]\ufG  
public class SortUtil { 0@H|n^Md#  
public final static int INSERT = 1; &NH$nY.r  
public final static int BUBBLE = 2; m]5Cq6  
public final static int SELECTION = 3; F.w 5S!5Q  
public final static int SHELL = 4; .HkL2m  
public final static int QUICK = 5; ?TU}~}  
public final static int IMPROVED_QUICK = 6; t.`@{R$hoA  
public final static int MERGE = 7; `bZ/haU}A  
public final static int IMPROVED_MERGE = 8; kw"SwdP5  
public final static int HEAP = 9; r[lF<2&*R  
E|6VX4`+  
public static void sort(int[] data) { aVK3?y2  
sort(data, IMPROVED_QUICK); D"ND+*Q [X  
} b\-&sM(W"  
private static String[] name={ f] J M /  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" K }Vv4x1U  
}; FRg^c kb"  
l}] t~!X=  
private static Sort[] impl=new Sort[]{ 5[* qi?w=  
new InsertSort(), ]dI2y=[!C  
new BubbleSort(), w8Sp <6*  
new SelectionSort(), 6P5Ih  
new ShellSort(), ?34 e-  
new QuickSort(), iVy7elT;R  
new ImprovedQuickSort(), V`bi&1?6\  
new MergeSort(), 5A sP5  
new ImprovedMergeSort(), ,!7 H]4Qx  
new HeapSort() 1e&QSzL  
}; $`z)~6'  
(UU(:/  
public static String toString(int algorithm){ ]y,==1To  
return name[algorithm-1]; rld67'KcE  
} `<\1[HJ\  
X&0 uI*r  
public static void sort(int[] data, int algorithm) { RV5n,J  
impl[algorithm-1].sort(data); uWM{JEOl  
} 8;Yx<woR  
fp[|M  
public static interface Sort { 'J6 M*vO  
public void sort(int[] data); D (h18  
} YEj8S5"Su\  
X!m9lV<  
public static void swap(int[] data, int i, int j) { 20Z8HwQi  
int temp = data; b#K:_ac5  
data = data[j]; Lz:(6`S  
data[j] = temp; { Fawt:  
} ,)iKH]lY=  
} $aN&nhoO<  
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