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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。 q#Ik3 5  
插入排序: er!+QD,EM  
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package org.rut.util.algorithm.support; YeF'r.Y  
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import org.rut.util.algorithm.SortUtil; <R#:K7> O  
/** wKz*)C  
* @author treeroot $5>x)jr:w+  
* @since 2006-2-2 ,z0E2  
* @version 1.0 +6Vu]96=KC  
*/ 81wmKqDEs  
public class InsertSort implements SortUtil.Sort{ eA/}$.R  
a6o p  
/* (non-Javadoc) -ktYS(8&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WxF@'kdn*,  
*/ T9'5V@  
public void sort(int[] data) { ;[Hrpl S  
int temp;  R"PO@v  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); P~"""3de4  
} xtp55"g  
} 7|?Ht]  
} 6r,zOs-I]  
q.lh  
} m$q*  
u #7AB>wi{  
冒泡排序: /B  
jbTyM"Y  
package org.rut.util.algorithm.support; h^b=  
]g9n#$|.  
import org.rut.util.algorithm.SortUtil; Y+~>9-S  
2f-Or/v  
/** #kQLHi3##  
* @author treeroot z.kBQ{P  
* @since 2006-2-2 %M05& <  
* @version 1.0 {|@N~c+  
*/ >[g'i+{  
public class BubbleSort implements SortUtil.Sort{ 7jF2m'(  
t]pJt  
/* (non-Javadoc) &44?k:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !myF_cv}'  
*/ >Q^*h}IdW  
public void sort(int[] data) { mDU-;3OqF  
int temp; qk(u5Z  
for(int i=0;i for(int j=data.length-1;j>i;j--){ sk`RaDq@;  
if(data[j] SortUtil.swap(data,j,j-1); rB5+~ K@  
} -QP1Se*#  
} u+e.{Z!  
} ) $I"LyK)  
} ~bJ*LM?wOP  
]5J*UZ}  
} R )e^H  
cK+)MFOu+  
选择排序: CB?H`R pC.  
(fWQ?6[  
package org.rut.util.algorithm.support; g/soop\:  
px_%5^zRQ  
import org.rut.util.algorithm.SortUtil; 2c<phmiK  
*r]#jY4qx  
/** q0 8  
* @author treeroot [ x|{VJ(h  
* @since 2006-2-2 &,`P%a&k  
* @version 1.0 r.zJ/Tk  
*/ OAz -w  
public class SelectionSort implements SortUtil.Sort { \t@|-`  
T?FR@. Rm  
/* n?A;'\cK  
* (non-Javadoc) "mkTCR^]e  
* ,cFp5tV$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LIHf]+  
*/ o>Z+=&BZ@a  
public void sort(int[] data) { ]qc2jut"  
int temp; Y~M  H  
for (int i = 0; i < data.length; i++) { ]7{-HuQ8>}  
int lowIndex = i; n7Ia8?8-l  
for (int j = data.length - 1; j > i; j--) { RpY#_\^hI  
if (data[j] < data[lowIndex]) { x;R9Gc[5  
lowIndex = j; <$ Ar*<,6  
} Z?-l-s K  
} ;q$O^r~  
SortUtil.swap(data,i,lowIndex); 1e^-_Bo6'o  
} 'H,l\i@"  
} K<+h/Ok  
I*K~GXWs#  
} DavG=kvd  
`_v|O{DC{  
Shell排序: ^UK6q2[  
VN8ao0^d;d  
package org.rut.util.algorithm.support; sxLq'3(  
ZK]C!8\2|  
import org.rut.util.algorithm.SortUtil; |bz,cvlP W  
+P<LoI  
/** +<H)DPG<  
* @author treeroot -.E<~(fad  
* @since 2006-2-2 P1ab2D  
* @version 1.0 ]Z\.Vx  
*/ D?Q{&6p  
public class ShellSort implements SortUtil.Sort{ W7"ks(  
oFV >b  
/* (non-Javadoc) vH#^|u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ofg-gCF8  
*/ +d736lLe%  
public void sort(int[] data) { Sc*O_c3D  
for(int i=data.length/2;i>2;i/=2){ fm\IQqIK%  
for(int j=0;j insertSort(data,j,i); pJ5Sxgv{;  
} jM90 gPX>,  
} y(8AxsROp  
insertSort(data,0,1); f+huhJS5e  
} gI^*O@Q4{b  
.gWYKZM  
/** UpS`KgF"v  
* @param data PGHl:4`Es!  
* @param j !}^ {W)h[  
* @param i ?J~(qaa;  
*/ OE/O:F:1j  
private void insertSort(int[] data, int start, int inc) { HLU'1As65  
int temp; JQ8wL _C>  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); "tbKKh66  
} / %U+kW  
} e;<=aa)}?  
} !285=cxz  
{@oYMO~  
} kGMI ?  
7PZ0  
快速排序: i9oi}$;J  
pVt8z|p_;{  
package org.rut.util.algorithm.support; Hay`lA2@  
?t+Kp 9@aZ  
import org.rut.util.algorithm.SortUtil; >_]j{}~\k  
vd9><W  
/** /nRi19a%xU  
* @author treeroot >T4.mB7+>  
* @since 2006-2-2 :d-+Z%Y  
* @version 1.0 "el}@  
*/ TCFx+*fBd  
public class QuickSort implements SortUtil.Sort{ 8hi|F\$_h  
o+(.Pb  
/* (non-Javadoc) B&yb%`9],W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X/TuiKe  
*/ [(Pm\o  
public void sort(int[] data) { gYx|Na,+  
quickSort(data,0,data.length-1); Y zSUJ=0/  
} ".eD&oX{  
private void quickSort(int[] data,int i,int j){ Z*QsDS  
int pivotIndex=(i+j)/2; 'k#^Z  
file://swap ucyz>TL0  
SortUtil.swap(data,pivotIndex,j); %uyRpG3,  
YZdp/X6x  
int k=partition(data,i-1,j,data[j]); ZO+c-!%[(  
SortUtil.swap(data,k,j); ]v3 9ag_hu  
if((k-i)>1) quickSort(data,i,k-1); tm(.a ?p  
if((j-k)>1) quickSort(data,k+1,j); Z| Z447_  
!t6:uC7H  
} ZUb6d*B  
/** \&J7>vu^y  
* @param data hd.^ZD7  
* @param i v3Y/D1jd"  
* @param j &<-Sxjj  
* @return <5A(rDij  
*/ B8:_yAv o  
private int partition(int[] data, int l, int r,int pivot) { -U(T  
do{ < Vr"  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); |Gb"%5YD  
SortUtil.swap(data,l,r); <DCrYt!1}c  
} /z*?:*  
while(l SortUtil.swap(data,l,r); }.O2xZ;}]'  
return l; {b[8x   
} 'QjX2ytgX  
7^h?<X\  
} *Y6BPFE*4  
O/>$kG%ge  
改进后的快速排序: AS[cz! >  
1y l2i|m+  
package org.rut.util.algorithm.support; pIk&NI  
UjwA06  
import org.rut.util.algorithm.SortUtil; }| _uqvin  
%< JjftNQ  
/** P7(+{d{  
* @author treeroot E@aR5S>  
* @since 2006-2-2 %zyO}  
* @version 1.0 B i?DmrH  
*/ vDz)q  
public class ImprovedQuickSort implements SortUtil.Sort { 7$+n"Cfm  
'Uew(o  
private static int MAX_STACK_SIZE=4096; (CS"s+y1  
private static int THRESHOLD=10; [L8Bgw1  
/* (non-Javadoc) _K>cB<+d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K>9]I97g'  
*/  cpp0Y^  
public void sort(int[] data) { xCD|UC46?X  
int[] stack=new int[MAX_STACK_SIZE]; DF/p{s1Y3  
l. ?R7f  
int top=-1; J_OIU#-B  
int pivot; el39HB$  
int pivotIndex,l,r; DHJh.Y@H  
iTi<X|X  
stack[++top]=0; >sdj6^[+  
stack[++top]=data.length-1; {=j!2v#8~  
.0S.7w3dZo  
while(top>0){ b40zYH`'{  
int j=stack[top--]; 5@bLD P  
int i=stack[top--]; I|,^a|\  
2GA6@-u\  
pivotIndex=(i+j)/2; 8'_>A5L/C  
pivot=data[pivotIndex]; MOY.$M,1  
$ckX H,l_  
SortUtil.swap(data,pivotIndex,j); 9 W> <m[O  
'H <?K  
file://partition i2A>T/?{  
l=i-1; 9~bje^M  
r=j; 0~Ot  
do{ [s"3g\L';  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); s={AdQ  
SortUtil.swap(data,l,r); hgX@?WWR  
} 1 e1$x@\\  
while(l SortUtil.swap(data,l,r); IL?3>$,  
SortUtil.swap(data,l,j); gYfN ?A*`_  
v_"p)4&'  
if((l-i)>THRESHOLD){ 8MGtJ'.  
stack[++top]=i; {3]g3mj  
stack[++top]=l-1; hWwh`Vw%  
} :O)\v!Z  
if((j-l)>THRESHOLD){ C 2Fklp6  
stack[++top]=l+1; p#) u2^  
stack[++top]=j; V|ax(tHv  
} _ro^<V$%  
 8Br*  
}  ;?1H&  
file://new InsertSort().sort(data); 2Otd  
insertSort(data); W)ihk\E  
} Wo2TU!  
/** I.A7H'j  
* @param data ,5HQHo@  
*/ B1 oi]hDy  
private void insertSort(int[] data) { e3UGYwQ  
int temp; q [Rqy !,  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); tbF>"?FY/  
} Nt9M$?\P  
} @T  
} :2{6Pa(eg  
1w/1k6`0  
} }$s#H{T!  
%+YLe-\?  
归并排序: \R yOexNZ  
FA<|V!a  
package org.rut.util.algorithm.support; OACRw%J:X{  
N|Xx#/  
import org.rut.util.algorithm.SortUtil; k{(R.gLZG  
os|8/[gT  
/** "qjkw f)\  
* @author treeroot at]=SA  
* @since 2006-2-2 >{p&_u.r-  
* @version 1.0 P% _cIR  
*/ I?LJXo\O  
public class MergeSort implements SortUtil.Sort{ Ikql  
M?Tb9c?`  
/* (non-Javadoc) T_|%n F-+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '8K5=|!J  
*/ i,1=5@rw5  
public void sort(int[] data) { t=o0 #jo  
int[] temp=new int[data.length]; lxx)l(&  
mergeSort(data,temp,0,data.length-1); qk;*$Q  
} <|[G=GA\S!  
5drc8_fZ  
private void mergeSort(int[] data,int[] temp,int l,int r){ htX;"R&  
int mid=(l+r)/2; DW&%"$2  
if(l==r) return ; CRf!tsj@  
mergeSort(data,temp,l,mid); .|iMKRq  
mergeSort(data,temp,mid+1,r); iZ % KHqG  
for(int i=l;i<=r;i++){ h3D~?Iom  
temp=data; \fIGMoy!  
} AVf'"~?  
int i1=l; 'g.9 goQ  
int i2=mid+1; YyEW}2  
for(int cur=l;cur<=r;cur++){ pQAG%i^mF  
if(i1==mid+1) _jg&}HM  
data[cur]=temp[i2++]; :so2 {.t-  
else if(i2>r) Jn3cU  
data[cur]=temp[i1++]; ;[TC`DuNj0  
else if(temp[i1] data[cur]=temp[i1++]; "<ua G?:  
else iq2)oC_  
data[cur]=temp[i2++]; @TF^6)4f  
} Uyf<:8U\  
} L[o;@+32  
m}&cXY  
} vaN}M)W/  
u UXj  
改进后的归并排序: 3fPd|F.kF  
r8>(ayJ,  
package org.rut.util.algorithm.support; Xmr|k:z  
uvR9BL2=  
import org.rut.util.algorithm.SortUtil; JLo'=(  
s+IU%y/9$a  
/** vFKX@wV S  
* @author treeroot gv)F`uRWA  
* @since 2006-2-2 4Gz5Ju  
* @version 1.0 7R9.g6j  
*/ vU,AOK[l{  
public class ImprovedMergeSort implements SortUtil.Sort { kHLpa/A  
z{XN1'/V  
private static final int THRESHOLD = 10; \1|]?ZQ\K  
aK>5r^7S  
/* RO.GD$ 3n  
* (non-Javadoc) @!k\Ivd  
* r*?rwtFtg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5@l[!Jl0k  
*/ ,Vb;2  
public void sort(int[] data) { GZJIIP#  
int[] temp=new int[data.length]; Sc!]M 5  
mergeSort(data,temp,0,data.length-1); !R p  
} W=b<"z]RE  
X 'D~#r  
private void mergeSort(int[] data, int[] temp, int l, int r) { "9F]Wv/  
int i, j, k; &q~**^;'  
int mid = (l + r) / 2; 6G2s^P1Dl@  
if (l == r) Ip c2Qsa  
return; /tIR}qK  
if ((mid - l) >= THRESHOLD) nADt8  
mergeSort(data, temp, l, mid); 0zH^yx:ma  
else !;Hi9,<#7g  
insertSort(data, l, mid - l + 1); 5A|4  
if ((r - mid) > THRESHOLD) vwy10PlqL  
mergeSort(data, temp, mid + 1, r); UrAg*v!Qy  
else .gY}}Q  
insertSort(data, mid + 1, r - mid); 6x18g(KbP  
P$l-p'U-  
for (i = l; i <= mid; i++) { yLv jfP1  
temp = data; o=/Cje  
} Twqkd8[  
for (j = 1; j <= r - mid; j++) { 9J>b6   
temp[r - j + 1] = data[j + mid]; (EZ34,k'S  
} &qR1fbw"  
int a = temp[l]; tF:'Y ~3 p  
int b = temp[r]; J6m`XC  
for (i = l, j = r, k = l; k <= r; k++) { -anLp8G*  
if (a < b) { BP f;!.  
data[k] = temp[i++]; Y)D~@|D,  
a = temp; `v2]Jk<  
} else { 4a'O#;h o  
data[k] = temp[j--]; P "S=RX#+  
b = temp[j]; WY=RJe2  
} _PTo !aJL  
} 31BN ?q  
} Y# <38+Gd  
HbQvu@  
/** "v.]s;g  
* @param data P<+y%g(({  
* @param l m3|KIUP  
* @param i %y@iA91K  
*/ @\~qXz{6J  
private void insertSort(int[] data, int start, int len) { !A R$JUnX  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 6Mpbmfr  
} C):RE<X  
} B_f0-nKP  
} m>po+7"b  
} 9ICC2%j|  
#3uBq(-Z  
堆排序: >z=_V|^$  
o;#{N~4[$  
package org.rut.util.algorithm.support; W@S'mxk#*  
= mn jIp  
import org.rut.util.algorithm.SortUtil; m~K[+P  
HSt|Ua.c/h  
/** kBPFk t2  
* @author treeroot R=D\VIu,Z  
* @since 2006-2-2 'WqSHb7  
* @version 1.0 %}z/_QZ  
*/ %9_wDfw~  
public class HeapSort implements SortUtil.Sort{ jgiP2k[Xom  
v\9:G  
/* (non-Javadoc) mwuFXu/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )9,*s !)9  
*/ +B*8$^,V)  
public void sort(int[] data) { >$.u|a  
MaxHeap h=new MaxHeap(); Q@3.0Hf|{  
h.init(data); wf7<#jIq  
for(int i=0;i h.remove(); `[+9n2j  
System.arraycopy(h.queue,1,data,0,data.length);  ]Ll <  
} Q]*YIb~D  
C,C=W]G  
private static class MaxHeap{ DdI7%?hK  
DSwF }  
void init(int[] data){ h]Zc&&+8{  
this.queue=new int[data.length+1]; $s2-O!P?  
for(int i=0;i queue[++size]=data; Z$R2Z$f  
fixUp(size); {Y5h*BD>  
} my#qmI  
} Isq3YY  
CK e  
private int size=0; ]{9oB-;,  
`Tzq vnn  
private int[] queue; 5H6GZ:hp  
l3aG#4jj  
public int get() { [7Nn%eZC  
return queue[1]; W7N Hr5RC  
} 7YRDQjg  
=q|fe%#  
public void remove() { uTJi }4cw  
SortUtil.swap(queue,1,size--); D#%J||  
fixDown(1); QN(f8t(  
} &%pB; dk  
file://fixdown #( nheL  
private void fixDown(int k) { X$JO<@x  
int j; K{VF_S:  
while ((j = k << 1) <= size) { BfOG e!Si  
if (j < size %26amp;%26amp; queue[j] j++;  =erA.u  
if (queue[k]>queue[j]) file://不用交换 Vvx(7p-GQ  
break; $"{V],:T |  
SortUtil.swap(queue,j,k); ADX}  
k = j; XA])<dZ  
} 3&*0n^g  
} rL URP2~  
private void fixUp(int k) { y? [*qnPj  
while (k > 1) { T[)) ful  
int j = k >> 1; 0:G@a&Lr  
if (queue[j]>queue[k]) 1at$_\{.(  
break; Fm}O,=  
SortUtil.swap(queue,j,k); 81a&99k#  
k = j; k?Jzy  
} hvBuQuk)  
} -b@E@uAX /  
SX}GKu  
} AW'tZF"  
=nnS X-x  
} yh_s(>sh  
I#l9  
SortUtil: %9mCgHQ9  
Kw'Dzz%kN  
package org.rut.util.algorithm; "!)8bTW  
9szE^kHS9  
import org.rut.util.algorithm.support.BubbleSort; whKr3)  
import org.rut.util.algorithm.support.HeapSort; if5Y!Tx?G  
import org.rut.util.algorithm.support.ImprovedMergeSort; 5*buRYck0  
import org.rut.util.algorithm.support.ImprovedQuickSort; oW]&]*>J  
import org.rut.util.algorithm.support.InsertSort; =Ak>2  
import org.rut.util.algorithm.support.MergeSort; af{;4Cr  
import org.rut.util.algorithm.support.QuickSort; !W$3p'8Tu  
import org.rut.util.algorithm.support.SelectionSort; K=sQ_j.&Z  
import org.rut.util.algorithm.support.ShellSort; 9r1pdG_C@  
E08AZOY&g  
/** B4R,[WE"  
* @author treeroot pq5)Ug  
* @since 2006-2-2 e;3$7$n Pv  
* @version 1.0 Lu:!vTRmw  
*/ \)BKuIP  
public class SortUtil { @=wAk5[IN  
public final static int INSERT = 1; 54F([w  
public final static int BUBBLE = 2; 8zj09T[  
public final static int SELECTION = 3; l^`!:BOtR  
public final static int SHELL = 4; d; #9xD'  
public final static int QUICK = 5; 8KWT d  
public final static int IMPROVED_QUICK = 6; Q X@&~  
public final static int MERGE = 7; j{_MDE7N  
public final static int IMPROVED_MERGE = 8; M/V >25`  
public final static int HEAP = 9; +G/~v`Bv  
3"[ KXzn  
public static void sort(int[] data) { s* 9tWSd  
sort(data, IMPROVED_QUICK); LR)is  
} \yG_wZs  
private static String[] name={ f`Wfw3  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" /HzhgMV3  
}; nBiSc*  
0^(.(:  
private static Sort[] impl=new Sort[]{ 3SIB #"9  
new InsertSort(), q=?"0i&V  
new BubbleSort(), 6C]!>i}U  
new SelectionSort(), TaolX*$5  
new ShellSort(), _ux 6SIyp`  
new QuickSort(), r)j#Skh].  
new ImprovedQuickSort(), R:.7 c(s  
new MergeSort(), ^\+6*YE 4  
new ImprovedMergeSort(), I:6xDDpZG`  
new HeapSort() KktTR`W  
}; [ z$J  
La9@h"  
public static String toString(int algorithm){ 3al5Vu2:  
return name[algorithm-1]; j|aT`UH03  
} E"G. _<3J8  
?tA- `\E  
public static void sort(int[] data, int algorithm) { G~esSL^G/  
impl[algorithm-1].sort(data); J"83S*2(j  
} 0_]aF8j  
0)2lBfHQ&  
public static interface Sort { wG{o bsL.!  
public void sort(int[] data); BK /;H G  
} v>R.M"f  
V)(pe #P  
public static void swap(int[] data, int i, int j) { w@:o:yLS  
int temp = data; )d.7xY7!  
data = data[j]; -x_iqrB  
data[j] = temp; ))KsQJ"V  
} Z#J{tXZc  
} ' xi..  
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