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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。 YKH\rN6X  
插入排序: o0ifp=V y  
3I)VHMC  
package org.rut.util.algorithm.support; r'^Hg/Jzt  
G,o6292hj  
import org.rut.util.algorithm.SortUtil; K{|p~B  
/** xJ>fm%{5  
* @author treeroot PsnWWj?c  
* @since 2006-2-2 @k,z:~[C=  
* @version 1.0 /Z~<CbKKl  
*/ :S<f?* }:  
public class InsertSort implements SortUtil.Sort{ gl\\+VyU  
/?@3.3sl_  
/* (non-Javadoc) pGJ>O/%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uE%r/:!k4$  
*/ ([SU:F!uW(  
public void sort(int[] data) { }001K  
int temp; sf)EMh3Z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); L ^q""[  
} w80oXXs[#  
} ,l !Ta "  
} _FH`pv  
B8f8w)m  
} `|{-+m  
oW ::hB  
冒泡排序: s5CXwM6cx  
C-Q28lD}f  
package org.rut.util.algorithm.support; sH{4Y-J  
1_9<3,7  
import org.rut.util.algorithm.SortUtil; B8": 2HrW$  
\NgYTZ  
/** N5Q[nd  
* @author treeroot c3 jx+Q  
* @since 2006-2-2 ,\_1w  
* @version 1.0 ,K9*%rW)  
*/ WI-&x '  
public class BubbleSort implements SortUtil.Sort{ % tS,}ze  
/t+f{VX$  
/* (non-Javadoc) O(fM?4w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7gf05Z'=  
*/ :r{<zd>;  
public void sort(int[] data) { /]K^ rw[  
int temp; a1EOJ^}0  
for(int i=0;i for(int j=data.length-1;j>i;j--){ &"yx<&c}  
if(data[j] SortUtil.swap(data,j,j-1); y0sR6TY)f  
}  Uwf +  
} `[f*Zv w  
} L 6 c 40  
} > V-A;S:  
[@VP?74  
} */sS`/Lx  
ojcA<60 '  
选择排序: 8aK)#tNWN  
[tlI!~Z  
package org.rut.util.algorithm.support; '(U-(wTC'/  
|iakz|])  
import org.rut.util.algorithm.SortUtil; Ag9vU7  
7j@Hs[ *  
/** 24 [+pu  
* @author treeroot f(/lLgI(  
* @since 2006-2-2 6 Q%jA7  
* @version 1.0 8I lunJ  
*/ Gr*r=s  
public class SelectionSort implements SortUtil.Sort {  7''??X  
A,JmX  
/* ns9U/ :L  
* (non-Javadoc) 3@kf@ Vf  
* +ieY:H[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @:+8?qcP  
*/ 6n,i0W  
public void sort(int[] data) { +O8%Hm  
int temp; ff]6aR/ UQ  
for (int i = 0; i < data.length; i++) { Vr]id  
int lowIndex = i; 8<X#f !  
for (int j = data.length - 1; j > i; j--) { :ci5r;^  
if (data[j] < data[lowIndex]) { \hTm)-FP  
lowIndex = j; m8A#~i .  
} 6eLR2  
} C[ NS kr  
SortUtil.swap(data,i,lowIndex); Lt u'W22  
} ?9!6%]2D  
} ,)0H3t  
Bo)3!wO8  
} Rw"sJ)/  
CS2 Bo  
Shell排序: v\c>b:AofD  
EAT"pxP  
package org.rut.util.algorithm.support; N-G1h?e4  
fT;s-v[`k  
import org.rut.util.algorithm.SortUtil; nEJq_  
L{X_^  
/** qB5j;@ r  
* @author treeroot gqZ'$7So  
* @since 2006-2-2 y&6FybIz  
* @version 1.0 `95r0t0hh\  
*/ B^1>PE  
public class ShellSort implements SortUtil.Sort{ Vx$\hcG  
WJQvB=D&  
/* (non-Javadoc) K18}W*$ d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bWH&P/>  
*/ `ZU($!(  
public void sort(int[] data) { /Gd=n  
for(int i=data.length/2;i>2;i/=2){ d(\%Os   
for(int j=0;j insertSort(data,j,i); Pr3qo4t.L  
} {+ ][5<q  
} <`.X$r*  
insertSort(data,0,1); o)h_H;  
} QX!-B  
m,VOx7%n  
/** = i$Fl{vH  
* @param data X$HIVxyq2  
* @param j ( Z619w  
* @param i Yrb{ByO&  
*/ C].iCxn  
private void insertSort(int[] data, int start, int inc) { 3DzMB?I  
int temp; )Q=_0;#;k  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); >tYm+coS  
} ohRjvJ'v|  
} q3mJ782p]  
} D[4u+g?[}>  
r)lEofX,g+  
} 8NxM4$nQX  
TITKj?*o  
快速排序: L9r8BK;  
J*r*X.  
package org.rut.util.algorithm.support; -f3p U:G8  
w{I vmdto  
import org.rut.util.algorithm.SortUtil; ^hG-~z<  
UvJ}b  
/** @'w"R/,n-@  
* @author treeroot :G [|CPm-  
* @since 2006-2-2 QqDC4+ p"  
* @version 1.0 VyXKZ%\dQ/  
*/ y0Fb_"}  
public class QuickSort implements SortUtil.Sort{ &:;:"{t}Do  
~FZ&.<s  
/* (non-Javadoc) x u>9(,l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V_R@o3kv;  
*/ xR-%L  
public void sort(int[] data) { p ?*Q- f  
quickSort(data,0,data.length-1); iIvc43YV%  
} 4-? C>  
private void quickSort(int[] data,int i,int j){ .~)q};Z  
int pivotIndex=(i+j)/2; O [\i E5+$  
file://swap |WQBDB`W  
SortUtil.swap(data,pivotIndex,j); $ZUdT  
1 8|m)(W  
int k=partition(data,i-1,j,data[j]);  '<jyw   
SortUtil.swap(data,k,j); u#Pa7_zBj]  
if((k-i)>1) quickSort(data,i,k-1); sr r :!5  
if((j-k)>1) quickSort(data,k+1,j); |v`AA?@{8  
} K7#Q  
} GD&uQ`Y5  
/** .!Qki@  
* @param data (iBNZ7sJ  
* @param i aEFJ;n7m  
* @param j %oF}HF.  
* @return D|lzGt  
*/ FTH|9OP  
private int partition(int[] data, int l, int r,int pivot) { s28`OKC}  
do{ XR8,Vt)=  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); b[sx_b  
SortUtil.swap(data,l,r); J; 3{3  
} &x=.$76  
while(l SortUtil.swap(data,l,r); j5QuAU8  
return l; 8{|8G-Mi  
} zE336  
1[mXd  
} /vY(o1o x  
\(3y7D  
改进后的快速排序: aKV$pC<[o  
w ~.f  
package org.rut.util.algorithm.support; ~t@cO.c  
aFc1|.Nm  
import org.rut.util.algorithm.SortUtil; &X`C%h  
a_[Eh fE  
/** \(J8#V  
* @author treeroot %OtFHhb  
* @since 2006-2-2 Bp*K]3_  
* @version 1.0 &Q9qq~  
*/ KLU-DCb%  
public class ImprovedQuickSort implements SortUtil.Sort {  jPC[_g  
8J*"%C$qe  
private static int MAX_STACK_SIZE=4096; TIx|L  
private static int THRESHOLD=10; [=x[ w70  
/* (non-Javadoc) Jz?j[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;5wn67'  
*/ `Y+J-EQ  
public void sort(int[] data) { o=u3&liBi  
int[] stack=new int[MAX_STACK_SIZE]; ~{*7"o/  
W KQ^NEqr3  
int top=-1; =Ee&da^MB  
int pivot; ~ {?_p@&n  
int pivotIndex,l,r; /Y*WBTV'  
]fm'ZY&  
stack[++top]=0; pny11C  
stack[++top]=data.length-1; &w4?)#  
< z+t,<3D  
while(top>0){ 7.-V-?i  
int j=stack[top--]; anuL1f XO  
int i=stack[top--]; BoA/6FRi[  
y6@0O%TDN  
pivotIndex=(i+j)/2; Q0$8j-1I  
pivot=data[pivotIndex]; T`/AY?#  
sI43@[  
SortUtil.swap(data,pivotIndex,j); OBgkpx*Q  
6T>mW#E&  
file://partition Y4%:7mw~=  
l=i-1; DDvh4<Hk  
r=j; s J\BF  
do{ +[Dj5~V  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); fTzvmC:g7  
SortUtil.swap(data,l,r); ~)*,S^k(C.  
} `{4i)n%e&  
while(l SortUtil.swap(data,l,r); .\ K_@M  
SortUtil.swap(data,l,j); tWo{7)Eb  
_my"%@n  
if((l-i)>THRESHOLD){ w;D+y*2  
stack[++top]=i; FK6[>(QO  
stack[++top]=l-1; 6~OoFm5  
} bf0+DvIB  
if((j-l)>THRESHOLD){ |HU@ >  
stack[++top]=l+1; ml2_ ]3j!  
stack[++top]=j; jnd[6v=C7-  
} 2`.cK 3  
?xK8#  
} 01[NX? qEa  
file://new InsertSort().sort(data); ,"2s`YC  
insertSort(data); ,?PTcQF  
} KjV:|  
/** YpQ7)_s ?  
* @param data A+HF@Uw}^  
*/ rMXN[,|v  
private void insertSort(int[] data) { 7}1~%:6  
int temp; ;sfb 4x4  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Ok{*fa.PK  
} $J4 *U  
} IOTR/anu  
} I6~pV@h^=  
2<li7c59  
} XttqO f  
h a|C&G  
归并排序: 0fc/wfv <  
Y_}mYvJW  
package org.rut.util.algorithm.support; nJbtS#`G4  
Gn&-X]Rrl  
import org.rut.util.algorithm.SortUtil; Z.d 7U~_  
ekI2icD  
/** A2^\q>_#  
* @author treeroot jATI&oX  
* @since 2006-2-2 cbeLu'DWB.  
* @version 1.0 9F6F~::l}  
*/ L}GC<D:  
public class MergeSort implements SortUtil.Sort{ *Kyw^DI  
F1iGMf-8  
/* (non-Javadoc) 'iy*^A `Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^?$WVB  
*/ vK(i 9>;7  
public void sort(int[] data) { OQ8 bI=?[x  
int[] temp=new int[data.length]; FSUttg"  
mergeSort(data,temp,0,data.length-1); C(S'#cm  
} ;g6M%;1-  
dX\.t <  
private void mergeSort(int[] data,int[] temp,int l,int r){ XIvn_&d;G  
int mid=(l+r)/2;  ~UyV<  
if(l==r) return ; }>)@WL:q  
mergeSort(data,temp,l,mid); iY`%SmB  
mergeSort(data,temp,mid+1,r); 9k9_mjLZ  
for(int i=l;i<=r;i++){ nM\eDNK  
temp=data; : q ti  
} ub7zA!%  
int i1=l; A; 5n:Sd  
int i2=mid+1; :1 (p.q=  
for(int cur=l;cur<=r;cur++){ @)-sTgn  
if(i1==mid+1) Bt1p'g(V|  
data[cur]=temp[i2++]; D,;\o7V  
else if(i2>r) ygeDcnvR]  
data[cur]=temp[i1++]; :`E8Z:-R  
else if(temp[i1] data[cur]=temp[i1++]; uMut=ja(U  
else  ]E_h  
data[cur]=temp[i2++]; xBUya4w  
} ]BtbWKJBqe  
} ak ->ML  
\=+b}mKV m  
} wUiys/ OVM  
!iH-#B-  
改进后的归并排序: _2k]3z?  
d}LRl"_n  
package org.rut.util.algorithm.support; RG3l.jL  
8 %%f%y  
import org.rut.util.algorithm.SortUtil; {g2@6ct  
g8Q5m=O*  
/** ebS0qo[oLH  
* @author treeroot '; =f  
* @since 2006-2-2 uHH/rMV  
* @version 1.0 tniDF>Rb  
*/ pWPIJ>2G:  
public class ImprovedMergeSort implements SortUtil.Sort { X/z6"*(|/  
AX?fuDLs  
private static final int THRESHOLD = 10; T21ky>8E  
D'L'#/hK  
/* } X^|$  
* (non-Javadoc) )+6v  
* 3uZJ.Fb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1z&Ly3  
*/ B=>RH!&  
public void sort(int[] data) { 0dA7pY9  
int[] temp=new int[data.length]; @HRC \OG  
mergeSort(data,temp,0,data.length-1); hty0Rb[dH  
} 5Xl /L  
o q4}3bQ  
private void mergeSort(int[] data, int[] temp, int l, int r) { HDda@Jy  
int i, j, k; MZTx:EN!  
int mid = (l + r) / 2; u)ev{)$TM  
if (l == r) /;7y{(o  
return; 1"pI^Ddt  
if ((mid - l) >= THRESHOLD) %V1Z~HC  
mergeSort(data, temp, l, mid); q}/WQ]p} <  
else 2RqbrY n  
insertSort(data, l, mid - l + 1); ot`%*  
if ((r - mid) > THRESHOLD) lqowG!3H  
mergeSort(data, temp, mid + 1, r); oEx\j+}@n  
else j:}J}P  
insertSort(data, mid + 1, r - mid); _(d.!qGz  
\S*$UE]uG  
for (i = l; i <= mid; i++) { b{d4xU8'  
temp = data; :U d  
} SG?Nsp^%`B  
for (j = 1; j <= r - mid; j++) { 1VF    
temp[r - j + 1] = data[j + mid]; BnCKSg7V  
} [97KBoSU  
int a = temp[l]; 9U {y1}  
int b = temp[r]; RbGJ)K!  
for (i = l, j = r, k = l; k <= r; k++) { 7R3fqU.Rq  
if (a < b) { 8>7RxSF  
data[k] = temp[i++]; l"{Sm6:;-  
a = temp; CvPioi  
} else { K*IxUz(  
data[k] = temp[j--]; xy8#2  
b = temp[j]; \X F}?*8  
}  cO\-  
} =?])['VaA  
} Uz608u  
{/ LZcz[  
/** afV P-m4L  
* @param data 6BR \iZ  
* @param l M@5KoMsB9  
* @param i O '@m4@L   
*/ @>gD1Q7v b  
private void insertSort(int[] data, int start, int len) { gRw.AXR a  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); g8rp|MOH  
} mC% %)F'Zf  
} S]5VEn;pV  
} IMw "eV  
} CF,8f$:2  
=]WW'~  
堆排序: ;!^ +N  
d"LoK,p#  
package org.rut.util.algorithm.support; A-X  
ef^Cc)S-Q  
import org.rut.util.algorithm.SortUtil; mQmBf|Rl  
e!.7no  
/** |K'Gw}fX/  
* @author treeroot l@~1CMyN  
* @since 2006-2-2 :,urb*  
* @version 1.0 0>I]=M]@  
*/ M" xZz  
public class HeapSort implements SortUtil.Sort{ wxH (&CB-{  
9k(*?!\;  
/* (non-Javadoc) cZCGnzy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XhQw+j~1.  
*/ bnA T,v{  
public void sort(int[] data) { Jslk  
MaxHeap h=new MaxHeap(); j` [#Ij  
h.init(data); aW52.X z%8  
for(int i=0;i h.remove(); R>/QA RX  
System.arraycopy(h.queue,1,data,0,data.length); 5HWwl.D  
} ?|%\<h@;  
{m?K2]](  
private static class MaxHeap{ D[?k ,*  
2rPcNh9  
void init(int[] data){ Sb@{f<3E  
this.queue=new int[data.length+1]; oG4w8+N  
for(int i=0;i queue[++size]=data; yYxeNE"  
fixUp(size); gaLEhf^  
} d,GtH)(s  
} aF; ]7i@  
[dSDg2]  
private int size=0; ]7XkijNb  
dv1x 78xG>  
private int[] queue; ,7n;|1`  
4yJ*85e]  
public int get() { Q:-%3)g<<  
return queue[1]; v!pj v%  
} Lo$Z>u4(c  
fg>B  
public void remove() { ~x4{P;y  
SortUtil.swap(queue,1,size--); []2$rJZD9  
fixDown(1); :_{{PY0PK  
} =sUl`L+w,L  
file://fixdown $'J6#Vs  
private void fixDown(int k) { ? $)x$nS`  
int j; d'lr:=GQ  
while ((j = k << 1) <= size) { L5V'Sr  
if (j < size %26amp;%26amp; queue[j] j++; A4 A6F<  
if (queue[k]>queue[j]) file://不用交换 5v Uz  
break; z^a6%N  
SortUtil.swap(queue,j,k); ^hl]s?"3  
k = j; yKe*<\  
} ]]h:#A2  
} 6 h0U  
private void fixUp(int k) { epG X.  
while (k > 1) { OW63^wA`s  
int j = k >> 1; m>*A0&??[  
if (queue[j]>queue[k]) &0th1-OP_  
break; I\Gp9w0f  
SortUtil.swap(queue,j,k); ;mo\ yW1  
k = j; z 1#0  
} ]Jq k C4|  
} @sg T[P*ut  
tz0Ttu=xH  
} )D" G3g.  
xM'S ;Sg  
} d=4f`q0k  
}!Diai*C  
SortUtil: }n2-*{)x  
;}>g1&q  
package org.rut.util.algorithm; |0%4G k);  
pw<q?q%  
import org.rut.util.algorithm.support.BubbleSort; Rbj+P;t&  
import org.rut.util.algorithm.support.HeapSort; lM|WOmD  
import org.rut.util.algorithm.support.ImprovedMergeSort; @aiLG wh  
import org.rut.util.algorithm.support.ImprovedQuickSort; G2yUuyAZ  
import org.rut.util.algorithm.support.InsertSort; io+7{B=u$  
import org.rut.util.algorithm.support.MergeSort; s68_o[[E  
import org.rut.util.algorithm.support.QuickSort; ~0^,L3M  
import org.rut.util.algorithm.support.SelectionSort; "$E!_  
import org.rut.util.algorithm.support.ShellSort; Fzld0p9=  
/c$Ht  
/** U3 8wGSG  
* @author treeroot 0Yzb=QMD  
* @since 2006-2-2 Er/5 ,  
* @version 1.0 @+CSY-g$  
*/ z$BnEd.y=:  
public class SortUtil { )[M<72  
public final static int INSERT = 1; |YGiATD4DG  
public final static int BUBBLE = 2; :{xN33@6\X  
public final static int SELECTION = 3; DCt:EhC  
public final static int SHELL = 4; @aD~YtL"n  
public final static int QUICK = 5; b gc<)=  
public final static int IMPROVED_QUICK = 6; #c)Ou!Ldb  
public final static int MERGE = 7; P7x?!71?L  
public final static int IMPROVED_MERGE = 8; >ya-  
public final static int HEAP = 9; )p^jsv.  
7SY->-H8  
public static void sort(int[] data) { x"wM_hl5L  
sort(data, IMPROVED_QUICK);  wpdEI(  
} q'V{vFfY%  
private static String[] name={ -L'K  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" g1*H|n h2  
}; XX[Wwt  
W7[ S7kd  
private static Sort[] impl=new Sort[]{ oJ@PJvmR&a  
new InsertSort(), PKM$*_LcGI  
new BubbleSort(), XsN#<"f;i  
new SelectionSort(), .sR&9FH  
new ShellSort(), S,tVOxs^  
new QuickSort(), Dw ;vDK  
new ImprovedQuickSort(), DF[b?  
new MergeSort(), W>|b98NPu  
new ImprovedMergeSort(), g+/U^JIc4l  
new HeapSort() 6dy4{i  
}; FHcqu_;J  
z57papo  
public static String toString(int algorithm){ -Us% g  
return name[algorithm-1]; _>m*`:Wb  
} y{?jr$js<  
WAa1H60VkS  
public static void sort(int[] data, int algorithm) { Mh.eAM8_  
impl[algorithm-1].sort(data); s]%!  
} ulSTR f  
8oH54bFp  
public static interface Sort { i8 ):0  
public void sort(int[] data); LXF%~^^@d  
} }Z? [Ut  
<({eOh5 N  
public static void swap(int[] data, int i, int j) { %1 ^jd\  
int temp = data; }R5&[hxh4t  
data = data[j]; @Be:+01z  
data[j] = temp; *g41"Cl  
} wP':B AQ4U  
} *-LU'yM6Yh  
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