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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。 lxsBXXZg  
插入排序: OX|nYTp  
]!l]^/ .  
package org.rut.util.algorithm.support; [wKnJu  
s'/b&Idf8  
import org.rut.util.algorithm.SortUtil; QAs$fi}f]s  
/** v(PwE B]  
* @author treeroot X'BFR]cm  
* @since 2006-2-2 MBlh lMyI  
* @version 1.0 =/_tQR~  
*/ eAvOT$  
public class InsertSort implements SortUtil.Sort{ "zpc)'$ L=  
ean_/E  
/* (non-Javadoc) yCk9Xc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e}V3dC^pU  
*/ ++b1VBP  
public void sort(int[] data) { 9/[1a_ r  
int temp; BT[jD}?  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /F/zMZGSA{  
} P[E:=p  
} WKjE^u  
} d"h*yH@  
w0`aW6t#  
} POZ5W)F(  
jS_fwuM  
冒泡排序: h?cf)L  
g>g]qQ  
package org.rut.util.algorithm.support; }ZPO^4H;-  
5G$sP,n  
import org.rut.util.algorithm.SortUtil; ,\t:R1.  
)83UF r4kP  
/** bLSZZfq  
* @author treeroot EMe3Xb `  
* @since 2006-2-2 .TI =3*`G  
* @version 1.0 PAYbsn  
*/ OHEl.p]|  
public class BubbleSort implements SortUtil.Sort{ /&PRw<}>_o  
e|6kgj3/  
/* (non-Javadoc) ^T^l3B[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NI^=cN,l  
*/ q\0CS>.  
public void sort(int[] data) { 4FWL\;6  
int temp; I-L52%E]  
for(int i=0;i for(int j=data.length-1;j>i;j--){ huPAWlxT  
if(data[j] SortUtil.swap(data,j,j-1); ?vnO@Bb/a  
} c/K:`XP~  
} +JDQ`Qk  
} REEs}88);'  
} !xqy6%p  
F_<n8U:Y  
} ]2Vu+AP  
CtEpS<*c  
选择排序: @ PboT1  
@ )bCh(u  
package org.rut.util.algorithm.support; MXVQ90  
fN!ci']  
import org.rut.util.algorithm.SortUtil; d*}dM "  
%a'Nf/9=:  
/** SC Qr/Q  
* @author treeroot E}YJGFB7"  
* @since 2006-2-2 @R c/ ^B:  
* @version 1.0 4lVvs(W?  
*/ %ZKP d8  
public class SelectionSort implements SortUtil.Sort { %>)HAx `  
55%j$f  
/* ,$H[DX  
* (non-Javadoc) 80'!XKSP  
* pW y+oZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |.ZYY(}  
*/ \f!j9O9S  
public void sort(int[] data) { |H .  
int temp; o0Z~9iF&  
for (int i = 0; i < data.length; i++) { _l,_NV&T  
int lowIndex = i; Y<ZaW{%  
for (int j = data.length - 1; j > i; j--) { I:l/U-b7h  
if (data[j] < data[lowIndex]) { w3<%wN>tE  
lowIndex = j; 'joc8o sS  
} :j<ij]rsI  
} [& d"Z2gK  
SortUtil.swap(data,i,lowIndex); (m~gG|n4  
} u)hr  
} [( O*W  
Xc}~_.]  
} :TZ</3Sw  
m4m,-}KNi  
Shell排序: -W\1n#J  
_u] S/X-  
package org.rut.util.algorithm.support; {0~xv@ U  
'CfM'f3uu  
import org.rut.util.algorithm.SortUtil; {L#+v~d^'n  
N t-8[J  
/**  %&81xAt  
* @author treeroot M3EB=tU  
* @since 2006-2-2 B*-A erdH  
* @version 1.0 A.|98*U%  
*/  aj|gt  
public class ShellSort implements SortUtil.Sort{ oScKL#Hu  
AnW72|=A(  
/* (non-Javadoc) BXx l-x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [$]Kp9YD  
*/ p+y2w{{  
public void sort(int[] data) { !C>'a:  
for(int i=data.length/2;i>2;i/=2){ '7ps_pz  
for(int j=0;j insertSort(data,j,i); ][[\!og  
} +]*hzWbe  
} k0>]7t$L  
insertSort(data,0,1); Z&M fE0F/B  
} &`}8Jz=S  
E!6Nf[  
/** "l7))>lL  
* @param data ,enU`}9V*  
* @param j D/<;9hw  
* @param i S>N/K  
*/ eI:;l];G9  
private void insertSort(int[] data, int start, int inc) { ?]Wg{\NC6  
int temp; c)Ep<W<r1  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); =(\xe| Q  
} ,2/y(JX}*!  
} WVkJ=r0Ny  
} lE 09Y  
n^+rxG6 L  
} cfrvx^,2&  
8r-'m%l  
快速排序: r_EuLFMA  
m@#@7[6]o  
package org.rut.util.algorithm.support; p(`?y:.3  
mq!_/3  
import org.rut.util.algorithm.SortUtil; g0M9v]c  
^Ss4<  
/** |`c=`xK7'  
* @author treeroot r_?il]l  
* @since 2006-2-2 cpe/GvD5]  
* @version 1.0 Vt;!FZ  
*/ /'WIgP  
public class QuickSort implements SortUtil.Sort{ idLCq^jnJ  
\UR/tlw+/  
/* (non-Javadoc) 4Px  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (;1Pgh  
*/ ")?NCun>  
public void sort(int[] data) { e/nc[  
quickSort(data,0,data.length-1); _=d X01  
} xZpGSlA  
private void quickSort(int[] data,int i,int j){ & ~*qTojj  
int pivotIndex=(i+j)/2; TexSUtx@$  
file://swap o*}--d? S  
SortUtil.swap(data,pivotIndex,j); U%)m [zAw  
@ApX43U(  
int k=partition(data,i-1,j,data[j]); D/7hVwMw:  
SortUtil.swap(data,k,j); *M^t@hl  
if((k-i)>1) quickSort(data,i,k-1); I[$SVPe#  
if((j-k)>1) quickSort(data,k+1,j); Xj+oV  
o7B }~;L  
} V {H/>>k7  
/** BMlu>,  
* @param data ;;cPt44s  
* @param i (bBr O74lR  
* @param j ( /):  
* @return QTKN6P  
*/ }?vVJm'  
private int partition(int[] data, int l, int r,int pivot) { v?S~ =$.  
do{ 5Rc^5Nv  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); {6uhUb  
SortUtil.swap(data,l,r); sH}q&=  
} KE k]<b=  
while(l SortUtil.swap(data,l,r); cHO8%xu`  
return l; 4X^{aIlshk  
} =O?#>3A}  
-jJw wOm  
} ^3:y<{J  
~BJ~]~0P`  
改进后的快速排序: x22:@Ot6  
}[%d=NY  
package org.rut.util.algorithm.support; tEE1`10Mt  
>tFv&1iR  
import org.rut.util.algorithm.SortUtil; [Q+qu>&HB7  
V7qc9Gd@I  
/** EE<^q?[3^  
* @author treeroot `AO<r  
* @since 2006-2-2 >.]' N:5  
* @version 1.0 l*+5WrOS  
*/ <P"4Mk7`s  
public class ImprovedQuickSort implements SortUtil.Sort { %}*0l8y  
&K*x[  
private static int MAX_STACK_SIZE=4096; aYyUe>  
private static int THRESHOLD=10; l`}Ag8Q  
/* (non-Javadoc) qK9\oB%s7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mm5y'=#  
*/ 0B;cQSH!q  
public void sort(int[] data) { x`#|8  
int[] stack=new int[MAX_STACK_SIZE]; %%w/;o!c  
YsHZFF  
int top=-1; W"@FRWcd  
int pivot; BIr24N  
int pivotIndex,l,r; v FL\O  
q~K KN /N  
stack[++top]=0; 5*d  
stack[++top]=data.length-1; t#0/_tD  
!w[io;  
while(top>0){ 4&+;n[D  
int j=stack[top--]; F9|\(St &  
int i=stack[top--]; _IK@K 6V1  
/<Doe SDJ|  
pivotIndex=(i+j)/2; nv9kl Q@  
pivot=data[pivotIndex]; =eXJZPR  
N1LZXXY{  
SortUtil.swap(data,pivotIndex,j); -[I}"Glz:  
73C  
file://partition O-M4NKl]6  
l=i-1; & m'ttUG?  
r=j; 'e3[m  
do{ $=? CW(  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _Vs\:tygs  
SortUtil.swap(data,l,r); r# }`{C;+5  
} U*Hw t\  
while(l SortUtil.swap(data,l,r); r] +V:l3  
SortUtil.swap(data,l,j); 8qEK6-  
O!b >  
if((l-i)>THRESHOLD){ Y2DR oQ  
stack[++top]=i; l"\W]'T:r  
stack[++top]=l-1; ;btH[a iV  
} !zw)! rV=  
if((j-l)>THRESHOLD){ .Jt&6N  
stack[++top]=l+1; LN8V&'>  
stack[++top]=j; Di3<fp#w#  
} :(,Eq?  
dnby&-+T  
} v@43 %`"Gj  
file://new InsertSort().sort(data); 2/9P&c-rp  
insertSort(data); T5eXcI0t  
} %}U-g"I  
/** m,e @bJ-  
* @param data QES[/i +  
*/ EV:y}  
private void insertSort(int[] data) { lg0iNc!  
int temp; mW_<c,3D.  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); UQwLAXs  
} hCX}*  
} )+[{MR '  
} ELp @/c=Wr  
9HOdtpQOV  
} OT_w<te  
9w -t9X>X  
归并排序: lE+v@Kb:  
_MZqH8  
package org.rut.util.algorithm.support; ,zy4+GW  
E%M~:JuKd?  
import org.rut.util.algorithm.SortUtil; <;d?E%`  
=Tf uwhV  
/** M"OX NPkc  
* @author treeroot eu(1bAfS&T  
* @since 2006-2-2 #\G{2\R  
* @version 1.0 C3af>L@}  
*/ X[:&p|g]  
public class MergeSort implements SortUtil.Sort{ nT0FonK>  
%C%~f {4  
/* (non-Javadoc) Vcg$H8m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t)74(  
*/ 8|A*N< h  
public void sort(int[] data) { lvi~GZ  
int[] temp=new int[data.length]; N(v<*jn  
mergeSort(data,temp,0,data.length-1); 7d?'~}j  
} Oslbt8)U6  
iWu$$IV?-  
private void mergeSort(int[] data,int[] temp,int l,int r){ 7p&%0'BO1z  
int mid=(l+r)/2; 7WG"_A~V  
if(l==r) return ; u>j:8lhtV  
mergeSort(data,temp,l,mid); bWK}oYB*  
mergeSort(data,temp,mid+1,r); rrei6$H&  
for(int i=l;i<=r;i++){ 2H8,&lY.p  
temp=data; BlQu9{=n  
} lH/d#MT   
int i1=l; v V:eU-a  
int i2=mid+1; k#T onT  
for(int cur=l;cur<=r;cur++){ :tY ;K2wDM  
if(i1==mid+1) yZbO{PMr  
data[cur]=temp[i2++]; _NAKVzo-  
else if(i2>r) \+mc   
data[cur]=temp[i1++]; ;2 oR?COW  
else if(temp[i1] data[cur]=temp[i1++]; +2=N#LM  
else }3cOZd_,t  
data[cur]=temp[i2++]; XCO{}wU)>  
} lL~T@+J~  
} >h/J{T(P>h  
xt@zP)6G  
} WR=e$ ;  
;w@PnY  
改进后的归并排序: 2-i>ymoOS  
8 M3Q8&  
package org.rut.util.algorithm.support; ]%m0PU#  
2xH9O{  
import org.rut.util.algorithm.SortUtil; @a) x^d  
T<06y3sN  
/** 't \:@-tQ  
* @author treeroot .w^M?}dx  
* @since 2006-2-2 Bo8+ uRF|  
* @version 1.0 k6-Q3W[+a  
*/ Ub%+8 M  
public class ImprovedMergeSort implements SortUtil.Sort { dIe-z7x  
7Xm7{`jH  
private static final int THRESHOLD = 10; EO$_]0yI;_  
Fku9hB  
/* 9VdVom|e  
* (non-Javadoc) d paZ6g  
* GEXT8f(7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x(h(a#,r  
*/ 8SK}#44Xz  
public void sort(int[] data) { q05_5  
int[] temp=new int[data.length]; ,T?8??bZ  
mergeSort(data,temp,0,data.length-1); cAIMt]_  
} :-7`Lfi@%  
di}YHMTx  
private void mergeSort(int[] data, int[] temp, int l, int r) {  FqAW><  
int i, j, k; nk9Kq\2f:  
int mid = (l + r) / 2; Z{7lyEzBg  
if (l == r) gE]) z*tqX  
return; x;89lHy@e  
if ((mid - l) >= THRESHOLD) n!~mdI&  
mergeSort(data, temp, l, mid); 'CsD[<  
else ao>bnRXR  
insertSort(data, l, mid - l + 1); y-O# +{7  
if ((r - mid) > THRESHOLD) C#[YDcp4  
mergeSort(data, temp, mid + 1, r); |ZW%+AQ|  
else }2-<}m9}  
insertSort(data, mid + 1, r - mid); Lc(D2=%  
,$@nbS{Q]  
for (i = l; i <= mid; i++) { f~-81ctu  
temp = data; ZYZQ?FN  
} I <`9ANe  
for (j = 1; j <= r - mid; j++) { R4GmUCKB=  
temp[r - j + 1] = data[j + mid]; mz;S*ONlV  
} x nWCio>M  
int a = temp[l]; @@K@;Jox  
int b = temp[r]; L {(\k$>'  
for (i = l, j = r, k = l; k <= r; k++) { ]uO 8  
if (a < b) { lob{{AB,!  
data[k] = temp[i++]; t_5b  
a = temp; =A&x d"  
} else { 6z@OGExmd#  
data[k] = temp[j--]; \)859x&(  
b = temp[j]; CPc<!CC  
} 4mSL*1j  
} tyFhp:ZB  
} CLU!/J $!  
4Z>hP]7  
/** xevG)m  
* @param data e_s9E{(  
* @param l !U.Xb6  
* @param i {bnNY  
*/ ?F'gh4  
private void insertSort(int[] data, int start, int len) { f)hs>F  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ^/\OS@CT\  
} %\#s@8=2u  
} 1><\3+8  
} d (]t}  
} i>6SY83B}  
)iadu  
堆排序: #+Z3!VS  
uV.3g 1 m  
package org.rut.util.algorithm.support; iOz<n z  
*A}QBZ  
import org.rut.util.algorithm.SortUtil; v<iMlOEt  
H pXMPHd  
/**  b<v\  
* @author treeroot 32jOs|<\  
* @since 2006-2-2 JPL8fX-w  
* @version 1.0 f 'aQ T  
*/ yA_;\\  
public class HeapSort implements SortUtil.Sort{ CBdS gHA3>  
b9%}< w  
/* (non-Javadoc) 3U=q3{%1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,t5X'sY L  
*/ {H s" "/sb  
public void sort(int[] data) { D3Lu]=G  
MaxHeap h=new MaxHeap(); EJY[M  
h.init(data); WL-+;h@VQ  
for(int i=0;i h.remove(); ;AKtb S;H  
System.arraycopy(h.queue,1,data,0,data.length); +aRjJ/*  
} hH:7  
)k0e}  
private static class MaxHeap{ hkSpG{;7  
s`F v!  
void init(int[] data){ LB%_FT5  
this.queue=new int[data.length+1]; , RfU1R  
for(int i=0;i queue[++size]=data; vfzGRr  
fixUp(size); quk~z};R>\  
} ,pir,Eozg  
} g6 EdCG.V  
XPXC7_fV  
private int size=0; Malt 7M  
B#o(21s  
private int[] queue; uHBX}WH  
8yax.N j  
public int get() { C3-l(N1O{  
return queue[1]; 3 2Q/4  
} _v4TyJ  
E>TD`  
public void remove() { 8 W8ahG}  
SortUtil.swap(queue,1,size--); ` _()R`=  
fixDown(1); D2|-\vJ>  
} ba|x?kz  
file://fixdown o1"U'y-9V  
private void fixDown(int k) { eJ)Bs20Q  
int j; td4*+)'FY  
while ((j = k << 1) <= size) { lJoMJS;S]}  
if (j < size %26amp;%26amp; queue[j] j++; VA4vAF  
if (queue[k]>queue[j]) file://不用交换 "[@-p  
break; cRz7.9-<  
SortUtil.swap(queue,j,k); Gh0H) q  
k = j; W-=~Afy  
} CU6rw+Vax  
} Nt67Ye3;  
private void fixUp(int k) { f[ GH  
while (k > 1) { K]zBPfx  
int j = k >> 1; TJ7on.;  
if (queue[j]>queue[k]) X;sl?8HG!<  
break; E5 H6&XU  
SortUtil.swap(queue,j,k); B$g!4C `g  
k = j; B:ddlxT $  
} 8kAG EiC  
} /7|u2!#Ui  
&PD4+%!  
} jnt0,y A  
N<Rb<p%  
} Bcrd}'no  
N:0/8jmmO  
SortUtil: (rt DT  
TuwH?{ FzK  
package org.rut.util.algorithm; Ts0.Ck  
B9iH+ ]W  
import org.rut.util.algorithm.support.BubbleSort; c;w cgU  
import org.rut.util.algorithm.support.HeapSort; t?28s/?  
import org.rut.util.algorithm.support.ImprovedMergeSort; }CaL:kY8  
import org.rut.util.algorithm.support.ImprovedQuickSort; (Z)  
import org.rut.util.algorithm.support.InsertSort; [:a;|t  
import org.rut.util.algorithm.support.MergeSort; cG?RisSZ  
import org.rut.util.algorithm.support.QuickSort; s ZkQJ->  
import org.rut.util.algorithm.support.SelectionSort; &k&tkE  
import org.rut.util.algorithm.support.ShellSort; 8_U*_I7(  
J\_tigd   
/** " FcA:7+  
* @author treeroot -{pcb7.xuv  
* @since 2006-2-2 ]. 1[H~5N  
* @version 1.0 9g"a`a?c  
*/ ^ft_1d[  
public class SortUtil { Kx*;!3-V$  
public final static int INSERT = 1; $&n!j'C:  
public final static int BUBBLE = 2; I6YN&9Y  
public final static int SELECTION = 3; r4Pm i  
public final static int SHELL = 4; @`$8rck`  
public final static int QUICK = 5; ~?E x?!\9R  
public final static int IMPROVED_QUICK = 6; n0O- Bxhl  
public final static int MERGE = 7; p:k>!8.Qho  
public final static int IMPROVED_MERGE = 8; GpN tvo~  
public final static int HEAP = 9; %l,p />r  
B Gh%3"q  
public static void sort(int[] data) { l *yml  
sort(data, IMPROVED_QUICK); nW{ ). P  
} pHni"i T  
private static String[] name={ fseHuL=~  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" a5?Rj~h!<  
}; 3@KX|-  
b0tr)>d  
private static Sort[] impl=new Sort[]{ q,^^c1f  
new InsertSort(), +x-n,!(  
new BubbleSort(), 8> T '  
new SelectionSort(), /AjGj*O  
new ShellSort(), ]|Vm*zO  
new QuickSort(), NL0X =i  
new ImprovedQuickSort(), cDxjD5E  
new MergeSort(), 'd|_i6:y&  
new ImprovedMergeSort(), Y=x]'3}^  
new HeapSort() )e4nKh],  
}; v\c.xtjI5x  
}a'8lwF%I  
public static String toString(int algorithm){ zRD{"uqi  
return name[algorithm-1]; @PU%BKe  
} (4>k+ H  
g(,gg1mG  
public static void sort(int[] data, int algorithm) { z./u;/:  
impl[algorithm-1].sort(data); Fj7cI +  
} kRTT ~  
^$6EO) <  
public static interface Sort { lmp0Ye|  
public void sort(int[] data); H--(zxK  
} c9=;:E  
P,j)m\|  
public static void swap(int[] data, int i, int j) { W.HM!HQp  
int temp = data; U9y[b82  
data = data[j]; mPi4.p)  
data[j] = temp; >(|T]u](q  
} J3oH^  
} ,~hvFTJI  
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