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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。 Udg & eEF  
插入排序: 8p3ZF@c~ t  
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package org.rut.util.algorithm.support; ejDCmD  
wZ}n3R,   
import org.rut.util.algorithm.SortUtil; DPR;$yV  
/** ktdz@f  
* @author treeroot w@4t$bd7  
* @since 2006-2-2 oT$(<$&<  
* @version 1.0 jw2_!D  
*/ lsN /$ M|}  
public class InsertSort implements SortUtil.Sort{ S]Sp Z8  
{: Am9B  
/* (non-Javadoc) #xD&z^o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jq=X!mT d.  
*/ )jp{*?^\  
public void sort(int[] data) { h,Y{t?Of  
int temp; k,yc>3P;U  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); c g3Cl[s  
} vEX|Q\b6'  
} uVoF<={  
} e@6RC bj  
8b8e^\l(  
} YY1{v?[  
[w+yQ7P  
冒泡排序: 9;r48)5  
?*(r1grHl  
package org.rut.util.algorithm.support; ptnMCF  
sj?`7kg  
import org.rut.util.algorithm.SortUtil; A8CIP:Z  
>;T$#LZ  
/** "P>$=X~Zi  
* @author treeroot ym-lT|>Z  
* @since 2006-2-2 YqK+F=0  
* @version 1.0 -PIA;#Gs  
*/ Z{8exym  
public class BubbleSort implements SortUtil.Sort{ HMl!?%%  
iqc4O /  
/* (non-Javadoc) jb#1&L 14  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5#N"WHz!  
*/ v^FV t  
public void sort(int[] data) { QE`:jxyad  
int temp; ~ 4p]E'b  
for(int i=0;i for(int j=data.length-1;j>i;j--){ V NJDl  
if(data[j] SortUtil.swap(data,j,j-1); P':]A{<Z  
} e3oYy#QNk  
} G!> iqG  
} /ynKKJx<Y  
} >llwNT  
&Sa_%:*D(  
} ZQgxrZx3  
tk] _QX %  
选择排序: Lqz}&A   
>b/k|?xP  
package org.rut.util.algorithm.support; `2Z4#$.  
uM}dZp 1  
import org.rut.util.algorithm.SortUtil; oX=*MEfX  
v#T?YK  
/** ?[NTw./'7A  
* @author treeroot QI :/,w  
* @since 2006-2-2 mfp`Iy"}+  
* @version 1.0 dvrvpDoE.  
*/ 5Xq.=/eX  
public class SelectionSort implements SortUtil.Sort { w|K(>5nz  
%nG~u,_2f  
/* S>vVjq?~l(  
* (non-Javadoc) [1Qk cR  
* "`8H:y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CIxVR  
*/ TV[6+i*#  
public void sort(int[] data) { tXb7~aO  
int temp; Sl+jduc  
for (int i = 0; i < data.length; i++) { ;N> {1  
int lowIndex = i; /S2p``E+  
for (int j = data.length - 1; j > i; j--) { ~Q{[fy=  
if (data[j] < data[lowIndex]) { !)l%EJngL  
lowIndex = j; 6@ (k8<3  
} nEZ-h7lzl(  
} {YxSH %  
SortUtil.swap(data,i,lowIndex); Rd@n?qB  
} )U/@J+{{  
} NL>[8#  
lN= m$J  
} ~8n~4  
GFy0R"&d[  
Shell排序: T[8"u<O96  
<(6-9(zHa  
package org.rut.util.algorithm.support; qKI4p3&E  
Fc{6*wtO  
import org.rut.util.algorithm.SortUtil; EnsNO_"e|  
@poMK:  
/** X&;]  
* @author treeroot $ uIwRG <  
* @since 2006-2-2 \CEnOq  
* @version 1.0 6LF^[b/u  
*/ `hQ!*f6  
public class ShellSort implements SortUtil.Sort{ }GU6Q|s[u[  
sQ3ayB`  
/* (non-Javadoc)  4.Jaw+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HnKF#<  
*/ qkR,<"C|`  
public void sort(int[] data) { y>pq*i  
for(int i=data.length/2;i>2;i/=2){ FclSuQWti  
for(int j=0;j insertSort(data,j,i); EL)/5-=S  
} l52n/w#qFB  
} b`={s  
insertSort(data,0,1); Y&cjJ`rw  
} +oKpA\mz  
VEdnP+D  
/** zLIa! -C  
* @param data MWd_ 6XM  
* @param j l7r N  
* @param i -T>wi J  
*/ `QyALcO   
private void insertSort(int[] data, int start, int inc) { J1v0 \  
int temp; 0z<]\a4  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 5M.n'*   
} 4|o{_g[  
} @gVyLefS6g  
} 7`'fUhB!  
]mLTF',5  
} 5 xzB1n8  
}FdcbNsP  
快速排序: 6w`}+3  
(Q p] 0  
package org.rut.util.algorithm.support; dxhjPS~^Q  
1wNY}3  
import org.rut.util.algorithm.SortUtil; pl^"1Z=*  
NtP.)  
/** +/UXy2VRt$  
* @author treeroot Q17o5##x7  
* @since 2006-2-2 W;AWO0+  
* @version 1.0 Q!A3hr$IF  
*/ tEs[zo+DR-  
public class QuickSort implements SortUtil.Sort{ X-) ]lAP  
fylA 0{  
/* (non-Javadoc) c%,6L<[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3x;y}:wQa  
*/ C9; X6  
public void sort(int[] data) { `] dx%  
quickSort(data,0,data.length-1); {p_vR/ yN  
} #o |&MV_j  
private void quickSort(int[] data,int i,int j){ # *aGzF  
int pivotIndex=(i+j)/2; tH|Q4C  
file://swap A ** M"T  
SortUtil.swap(data,pivotIndex,j); f8_UIdM7  
FSZoT!  
int k=partition(data,i-1,j,data[j]); Rb>RjHo S  
SortUtil.swap(data,k,j); Hn]n]wsLy  
if((k-i)>1) quickSort(data,i,k-1); &DhA$o"'  
if((j-k)>1) quickSort(data,k+1,j); s!RA_%8/>  
QRG)~  
} GWE0 UO}  
/** E1 gTrMo  
* @param data {3p7`h~  
* @param i qYiK bzy  
* @param j PC(iqL8r  
* @return Pge}xKT  
*/ 2P> za\  
private int partition(int[] data, int l, int r,int pivot) { 'L+BkE6+%  
do{ $Aoqtz d\  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); rZCAj  
SortUtil.swap(data,l,r); `g:^KCGMM  
} tVh4v#@+  
while(l SortUtil.swap(data,l,r); dcTM02kEh  
return l; Am`A[rV0  
} o0+BQ&A)s*  
oX~$'/2v  
} %-p{?=:K  
I)/7M}t`  
改进后的快速排序: $m0x8<7nu  
vrO$8* sy  
package org.rut.util.algorithm.support; ,( kXF:  
{-]HYk  
import org.rut.util.algorithm.SortUtil; ='||BxB  
A VG`r2T  
/** NX #d}M^V  
* @author treeroot }eRG$)'  
* @since 2006-2-2 kvVz-P Jy  
* @version 1.0 |[7$) $  
*/ nZ+5@( *  
public class ImprovedQuickSort implements SortUtil.Sort { Zg f||,  
)0V]G{QN  
private static int MAX_STACK_SIZE=4096; 3S|;yOl#X  
private static int THRESHOLD=10; `Ta(P30  
/* (non-Javadoc)  KGwL09)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \ #c+vfq  
*/ ph (k2cb  
public void sort(int[] data) { b2kbuk]  
int[] stack=new int[MAX_STACK_SIZE]; !*. nR(>d  
0aoHv  
int top=-1; fU7:3"|s8  
int pivot; }uj'BO2?  
int pivotIndex,l,r; d3J_IW+8R$  
w*kFtNBfU  
stack[++top]=0; h_"/@6  
stack[++top]=data.length-1; G9":z|  
f]65iE?x  
while(top>0){ ewPdhCK  
int j=stack[top--]; uB"m!dL  
int i=stack[top--]; BU{ V,|10a  
_ll aH  
pivotIndex=(i+j)/2; "/h"Xg>q  
pivot=data[pivotIndex]; wyEgm:Vt  
[!efQap  
SortUtil.swap(data,pivotIndex,j); -"fq34v  
CKw)J}z  
file://partition <Y'YpH`l  
l=i-1; KKJ[  
r=j; w[[@&T\`  
do{ /4BXF4ksi,  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #IA(*oM  
SortUtil.swap(data,l,r); qinQ5t  
} r>@/XYK&\  
while(l SortUtil.swap(data,l,r); O*CX@Ne  
SortUtil.swap(data,l,j); uKzz/Y{  
717m.t,x  
if((l-i)>THRESHOLD){  ,qqV11P]  
stack[++top]=i; [zd-=.:+M[  
stack[++top]=l-1; R@aT=\u+  
} 9+|,aG s  
if((j-l)>THRESHOLD){ IoX 9yGq  
stack[++top]=l+1; -T6%3>h  
stack[++top]=j; >{=RQgGy  
} YAG3PWmD  
Z6ex<[`I  
} ?kefRev<#h  
file://new InsertSort().sort(data); R6.#gb8^oS  
insertSort(data);  Q'M Ez  
} 3!UP>,!  
/** 3`q`W9  
* @param data _j tS-CnO  
*/ aJ@qB9(ZBe  
private void insertSort(int[] data) { ]}c=U@D,9  
int temp; $X]v;B)J|  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z:7F5!Z  
} ?bA]U:  
} +'4dP#  
} d0,F'?.0|  
)q-!5^ak  
} m,q<R1  
:|Ty 0>k  
归并排序: \./2Qc,  
E #]%e^  
package org.rut.util.algorithm.support; ;S j* {  
^yZEpQN_  
import org.rut.util.algorithm.SortUtil; I2Rp=L:z5  
E:OeU_\  
/** AtYYu  
* @author treeroot  e n":  
* @since 2006-2-2 Lj,%pzJ  
* @version 1.0 @SB+u+mOS  
*/ 4w[ta?&6B  
public class MergeSort implements SortUtil.Sort{ A+8b] t_k  
~'mhC46d  
/* (non-Javadoc) ,Ou)F;r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EHjhe z  
*/ ri`|qy6! |  
public void sort(int[] data) { bm?TMhC  
int[] temp=new int[data.length]; 1nmWL0  
mergeSort(data,temp,0,data.length-1); c:TP7"vG  
} =Ji:nEl]z  
dj]N59<  
private void mergeSort(int[] data,int[] temp,int l,int r){ 6*Qpq7Ml  
int mid=(l+r)/2; ^Y |s^N  
if(l==r) return ; rP_)*)  
mergeSort(data,temp,l,mid); {`55nwd  
mergeSort(data,temp,mid+1,r); (7 iMIY  
for(int i=l;i<=r;i++){ s:H1v&t,<  
temp=data; I78pul8!  
} \[jItg,+  
int i1=l; 0<k!F3=  
int i2=mid+1; X9wi:  
for(int cur=l;cur<=r;cur++){ C3gz)!3  
if(i1==mid+1) H_]kR&F8  
data[cur]=temp[i2++]; | w -W=v  
else if(i2>r) H0 t1& :  
data[cur]=temp[i1++]; M?lr#} d  
else if(temp[i1] data[cur]=temp[i1++]; B\yid@e  
else mD3#$E!A1  
data[cur]=temp[i2++]; [8#l~ |U  
} Qg=~n:j  
} 9m4|1)  
$_kU)<e3  
} X.qKG0i  
C? S%fF  
改进后的归并排序: *fZ'#C~x  
?=&*6H_v  
package org.rut.util.algorithm.support; 5N0H^  
"H8N,eb2  
import org.rut.util.algorithm.SortUtil; zT8K})#  
F_`Gs8- VH  
/** *6DKU CA/  
* @author treeroot ;C'*Ui  
* @since 2006-2-2 1)y}.y5S  
* @version 1.0 r>\.b{wI  
*/ PH.v3 3K  
public class ImprovedMergeSort implements SortUtil.Sort { &/p 9+gd  
; V8 =B8w  
private static final int THRESHOLD = 10; T28#?Lp6]  
lKcnM3n  
/* i fUgj8i_  
* (non-Javadoc) q_bB/   
* #%~wuCn<K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &I8ZVtg  
*/ lCXo+|$?s  
public void sort(int[] data) { %"D-1&%zY  
int[] temp=new int[data.length]; lOZZ-  
mergeSort(data,temp,0,data.length-1); r.[kD"l  
} *P>F# ~X  
DwPl,@T_i\  
private void mergeSort(int[] data, int[] temp, int l, int r) { %y'#@%kO:S  
int i, j, k; "Z <1Msz  
int mid = (l + r) / 2; t$b`Am  
if (l == r) HzV3O-Qz]  
return; :|bPr_&U$  
if ((mid - l) >= THRESHOLD) {>#Ya;E  
mergeSort(data, temp, l, mid); *:iFhKFU  
else r?{tBju^  
insertSort(data, l, mid - l + 1); 6B=J*8 Hs  
if ((r - mid) > THRESHOLD) sHNt>5p  
mergeSort(data, temp, mid + 1, r); cOSUe_S0w[  
else TeHR,GB  
insertSort(data, mid + 1, r - mid); YC{od5a  
] '..G-  
for (i = l; i <= mid; i++) { nL9m{$Zv  
temp = data; k 2~j:&p  
} -O\`G<s%  
for (j = 1; j <= r - mid; j++) { PM{kiz^  
temp[r - j + 1] = data[j + mid]; ?o2L  
} C.eZcNJG  
int a = temp[l]; ,xGkE7=5  
int b = temp[r]; FKPI{l  
for (i = l, j = r, k = l; k <= r; k++) { wml`3$"cf  
if (a < b) { s<:J(gD  
data[k] = temp[i++]; k7?(I U  
a = temp; Re`= B  
} else { r>V go):s  
data[k] = temp[j--]; 3/iGSG`  
b = temp[j]; U.&=b<f(0r  
} ,Ao8QN  
} E8/P D  
} 7C=t19&R'  
N7XRk= J  
/** 4q2aVm  
* @param data uv,t(a.^  
* @param l _|3n h;-m  
* @param i N G4wtDa  
*/ h<[o;E  
private void insertSort(int[] data, int start, int len) { Jf 2  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); "!2Fy-Y  
} US-P>yF  
} pl5!Ih6  
} M*nfWQ a  
} YDP<  
D+tn<\LF  
堆排序: 6:Ra3!V"v  
Ef69]{E  
package org.rut.util.algorithm.support; ) b?HK SqI  
n(&6 E3ZcI  
import org.rut.util.algorithm.SortUtil; ;sDFTKf  
Pl U!-7  
/** {A{=RPL  
* @author treeroot :*1bhk8~  
* @since 2006-2-2 1 Nv_;p.{  
* @version 1.0 K*>lq|i u  
*/ 6tVB}UKs  
public class HeapSort implements SortUtil.Sort{ uGOvZO^v  
]w({5i  
/* (non-Javadoc) c8A //  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !$P&`n]@  
*/ -3A#a_fu  
public void sort(int[] data) { xI$B",?(  
MaxHeap h=new MaxHeap(); 'F1NBL   
h.init(data); g9g^zd,  
for(int i=0;i h.remove(); V#zDYrp  
System.arraycopy(h.queue,1,data,0,data.length); ht ` !@B  
} \xwE4K  
+c?1\{M   
private static class MaxHeap{ 42mdak}\  
C*=#=.~~{  
void init(int[] data){ p "u5wJ_  
this.queue=new int[data.length+1]; |oa 9 g2  
for(int i=0;i queue[++size]=data; IWX%6*Zz  
fixUp(size); !ce5pA  
} ZdfIe~Oni  
} vn7<>k> dx  
O.Z<dy+  
private int size=0; ,*Jm\u  
1 %K^(J;  
private int[] queue; j"hfsA<_I  
!q mnMY$  
public int get() { t0(1qFi  
return queue[1]; F.zn:yX5  
} H1]G<N3  
&Nl:  
public void remove() { (bY#!16C:  
SortUtil.swap(queue,1,size--); Y;G+jC8   
fixDown(1); N^H~VG&D(  
} 4fgA3%  
file://fixdown s${ew.eW  
private void fixDown(int k) { s0WI93+z  
int j; %Sf%XNtu  
while ((j = k << 1) <= size) { lOYzo  
if (j < size %26amp;%26amp; queue[j] j++; 1*,f  
if (queue[k]>queue[j]) file://不用交换 '(4$h3-gv7  
break; uDbz`VpK  
SortUtil.swap(queue,j,k); 9v=5x[fE  
k = j; hKj"Lb9 ]  
} Tapj7/0`  
} 0P_qtS  
private void fixUp(int k) { ?VmE bl  
while (k > 1) { ] X%T^3%G  
int j = k >> 1; 9q(*'rAm  
if (queue[j]>queue[k]) >fNRwmi  
break; S jgjGJw  
SortUtil.swap(queue,j,k); (< gk<e*  
k = j; gZ8n[zxf6  
} hi^@969  
} &z8I@^<  
W6:ei.d+NS  
} 80DcM9^t8  
S2T~7-  
} hE@s~ ~JYd  
$)8b)Tb  
SortUtil: gTa6%GM>  
Y%m^V?k  
package org.rut.util.algorithm; KF(N=?KO  
FwKT_XkY  
import org.rut.util.algorithm.support.BubbleSort; 6qp2C]9=  
import org.rut.util.algorithm.support.HeapSort; VPBlU  
import org.rut.util.algorithm.support.ImprovedMergeSort; ZUPlMHc  
import org.rut.util.algorithm.support.ImprovedQuickSort; pCb3^# &o  
import org.rut.util.algorithm.support.InsertSort; /Sy:/BQ  
import org.rut.util.algorithm.support.MergeSort; WrP 4*6;"  
import org.rut.util.algorithm.support.QuickSort; qRC-+k:  
import org.rut.util.algorithm.support.SelectionSort; ?Zu2=<DU  
import org.rut.util.algorithm.support.ShellSort; 0<(F 8  
p}I ,!~}  
/** d)d\h`=Z  
* @author treeroot {kVhht]X  
* @since 2006-2-2 V}_M\Y^^;  
* @version 1.0 \-i5b  
*/ vy&q7EX<i  
public class SortUtil { x=]PE}<E  
public final static int INSERT = 1; 2?J[D7  
public final static int BUBBLE = 2; rRgP/E#_  
public final static int SELECTION = 3; D_VAtz  
public final static int SHELL = 4; Twl>Pn>  
public final static int QUICK = 5; *PEk+e  
public final static int IMPROVED_QUICK = 6; 0@cc XF E  
public final static int MERGE = 7; ]w*w@:Zk  
public final static int IMPROVED_MERGE = 8; JWzN 'a R  
public final static int HEAP = 9; D}YAu,<K  
d'y\~M9(  
public static void sort(int[] data) { KicPW}_  
sort(data, IMPROVED_QUICK); 9b88):[qO  
} BTi:Bcv k  
private static String[] name={ "kH Ft|%@  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" <B"M} Y>_P  
}; 1j4(/A  
1T96W :   
private static Sort[] impl=new Sort[]{ ~m@v ~=  
new InsertSort(), dB`3"aSN7  
new BubbleSort(), EkWipF(  
new SelectionSort(), Wg\`!T  
new ShellSort(), &\[3m^L  
new QuickSort(), =XbOY[  
new ImprovedQuickSort(), PH$fDbC8  
new MergeSort(), \r4QS  
new ImprovedMergeSort(), {tqLH2cO  
new HeapSort() * }\}@0%  
}; #*r u*  
[,_4#Zz  
public static String toString(int algorithm){ b3$aPwv  
return name[algorithm-1]; >M1m(u84#  
} @!;EW R]  
0C3s  
public static void sort(int[] data, int algorithm) { B-EVo&.  
impl[algorithm-1].sort(data); b d!|/Lk  
} 0qND2_  
k#*tf:R  
public static interface Sort { >'\cNM~nf  
public void sort(int[] data); mI;#Zq_j  
} X0IXj%\N  
?<7o\Xk#{  
public static void swap(int[] data, int i, int j) { KB3zQJY  
int temp = data; 5 *w a  
data = data[j]; #a : W  
data[j] = temp; Nhq& Sn2  
} "'M>%m u  
} OanHG  
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