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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。 N6BNzN}-P  
插入排序: |Cq8%  
N*':U^/t4J  
package org.rut.util.algorithm.support; ?q6Z's[  
a+'}XEhSC:  
import org.rut.util.algorithm.SortUtil; #!1IP~  
/** \Nyr=<c  
* @author treeroot W/a,.M  
* @since 2006-2-2 QSv^l-<  
* @version 1.0 &|NZ8:*+#  
*/ 9PCa*,  
public class InsertSort implements SortUtil.Sort{ k!9=  
)5'rw<:="  
/* (non-Javadoc) d[" x= [f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [JZ  h*A  
*/ LVoyA/ F  
public void sort(int[] data) { 9D%qXU  
int temp; hi0XVC95  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /!-J53K  
} %B0w~[!4}  
} ~R'BU=!;F  
} tr5'dX4]  
wFp~  
} % kJh6J  
dA|Lufy#  
冒泡排序: t(wZiK}  
JR!Q,7S2!N  
package org.rut.util.algorithm.support; 7t`E@dm  
2'|XtSj  
import org.rut.util.algorithm.SortUtil; f!mE1,eBEe  
{uEu >D$8  
/** - *r[  
* @author treeroot G 2!}R  
* @since 2006-2-2 7KeXWW/d  
* @version 1.0 )CFk`57U  
*/ ~d&'Lp[3  
public class BubbleSort implements SortUtil.Sort{ N/(ofy  
=!(S<];  
/* (non-Javadoc) .zQ4/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <=$rU232}  
*/ r^fxyN2V  
public void sort(int[] data) { l&\t f`~  
int temp; qwL 0~I  
for(int i=0;i for(int j=data.length-1;j>i;j--){ $xLEA\s  
if(data[j] SortUtil.swap(data,j,j-1); BN_!Y)F l  
} ?OdV1xB  
} /]pX8 d  
} >F,$;y52  
} r(PJ~8)(=  
A1mYkG)l  
} Xs{/}wc.q;  
N-]\oMc2  
选择排序: !1D%-=dWX  
'Na|#tPYI  
package org.rut.util.algorithm.support; :yd=No@  
}*xC:A%aS  
import org.rut.util.algorithm.SortUtil; #Y/97_2 xa  
;%v%K+}r  
/** w g$D@E7  
* @author treeroot 1-4   
* @since 2006-2-2 .a ~s_E  
* @version 1.0 QWU5-p9e8  
*/ Z}]:x `fXd  
public class SelectionSort implements SortUtil.Sort { -fb1cv~N  
$ iX^p4v  
/* _Cu[s?,kS  
* (non-Javadoc) L-^# 02  
* 113Z@F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h<PYE]?l  
*/ bx+(.F  
public void sort(int[] data) { % <8K^|w  
int temp; *O"%tp6  
for (int i = 0; i < data.length; i++) { 6|Ba  
int lowIndex = i; [X0k{FR  
for (int j = data.length - 1; j > i; j--) { O JZ!|J8?  
if (data[j] < data[lowIndex]) { f]@[4<Ny  
lowIndex = j; >=.ch5h3J)  
} `XQx$I  
} |HKHN? )  
SortUtil.swap(data,i,lowIndex); 34&u]4=L)  
} N[|by}@n  
} z{ Zimr  
AxG?zBTFx  
} <8F->k1"3  
.#:@cP~v  
Shell排序: g7E`;&f  
XnNOj>!  
package org.rut.util.algorithm.support; cOj +}Hz58  
,d/CU  
import org.rut.util.algorithm.SortUtil; S4@117z5  
B=o#LL  
/** MSxU>FX0  
* @author treeroot xc3Ov9`8%  
* @since 2006-2-2 "9MX,}X*  
* @version 1.0 7;$L&X  
*/ ss|6_H =  
public class ShellSort implements SortUtil.Sort{ XY$cx~  
=6"hj,[Q  
/* (non-Javadoc) AOvH&9**  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z.cG`Km*  
*/ 3!ajvSOI9j  
public void sort(int[] data) { 93zlfLS0  
for(int i=data.length/2;i>2;i/=2){ DI2S %N l  
for(int j=0;j insertSort(data,j,i); |zr)hC  
} A ydy=sj  
} O(c4iWm  
insertSort(data,0,1); {<Xo,U7 y  
} {kY`X[fvZ  
!T&u2=`D  
/** _3FMQY(  
* @param data p!rG PyGC  
* @param j Q xj|lr  
* @param i D%5 {A=  
*/ \a~;8):q=i  
private void insertSort(int[] data, int start, int inc) { BhhK| U/  
int temp; xr1I8 5kM  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); U 8 .0L  
} <iY 9cV|}3  
} U`vt/#j 1  
} @Z1?t%1  
 # 8-P  
} #!F8n`C-  
_#\5]D~""  
快速排序: Qg8eq_m(  
=fu_ Jau}  
package org.rut.util.algorithm.support; _tg3%X]  
aV0;WH_3  
import org.rut.util.algorithm.SortUtil; nG(|7x   
::Ve,-0  
/** _ jM6ej<  
* @author treeroot *TMM:w|1  
* @since 2006-2-2 DQHGq_unP  
* @version 1.0 5E!|on  
*/ h?O%XnD  
public class QuickSort implements SortUtil.Sort{ Ni;{\"Gt  
!un"XI0`t<  
/* (non-Javadoc) epm8N /  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Yv|bUZ @  
*/ rBL_]\$7}  
public void sort(int[] data) { I[YfF  
quickSort(data,0,data.length-1); 9R<J$e  
} X wn|.  
private void quickSort(int[] data,int i,int j){ >?Y3WPB<F  
int pivotIndex=(i+j)/2; )Z`viT  
file://swap ]&%X(jWyn  
SortUtil.swap(data,pivotIndex,j); RI].LB_  
'"NdT7*+  
int k=partition(data,i-1,j,data[j]); "\P~Re"EH  
SortUtil.swap(data,k,j); Lw78v@dY  
if((k-i)>1) quickSort(data,i,k-1); dYttse'  
if((j-k)>1) quickSort(data,k+1,j); 'Y/V9;`)s  
O"w_sw  
} n$VPh/  
/** enO=-#  
* @param data Vf* B1Zb  
* @param i d(cYtM,P  
* @param j )fcpE,g'  
* @return [;\< 2=H  
*/ `[R:L.H1  
private int partition(int[] data, int l, int r,int pivot) { UM;bVf?  
do{ Xv;ZAa  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); D_`)T;<Sp  
SortUtil.swap(data,l,r); >w'?DV>u|  
} xo@/k   
while(l SortUtil.swap(data,l,r); {hp@j#  
return l; l=G#gKE  
} 'Rf#1ls#  
T"jDq1C/,E  
} qv >(  
!!Gi.VL  
改进后的快速排序: 7UnO/K7oB.  
v?iH}7zb%Q  
package org.rut.util.algorithm.support; vt7C  
:=fHPT  
import org.rut.util.algorithm.SortUtil; 2tTV5,(1  
ZtZV:re=  
/** a[OLS+zf!P  
* @author treeroot S| ?--vai_  
* @since 2006-2-2 uaMm iR  
* @version 1.0 i_9/!D  
*/ Kwmo)|7uPU  
public class ImprovedQuickSort implements SortUtil.Sort { ;bu;t#  
+(hwe jyC  
private static int MAX_STACK_SIZE=4096; sjbC~Te--  
private static int THRESHOLD=10; eT \Q  
/* (non-Javadoc) #pxet  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #hiDZ>nr  
*/ ;C@^wI  
public void sort(int[] data) { .ceU @^  
int[] stack=new int[MAX_STACK_SIZE]; Ptxc9~k  
jT_Tx\k  
int top=-1; yru}f;1  
int pivot; fpC@3itI  
int pivotIndex,l,r; v8M#%QoA  
m(Xr5hw:6  
stack[++top]=0; o".O#^3H%  
stack[++top]=data.length-1; ~]s"PV:|  
x6mq['_  
while(top>0){ |UiykQ  
int j=stack[top--]; X_yU"U  
int i=stack[top--]; :BiR6>1:  
iV$75Atk  
pivotIndex=(i+j)/2; Cl){sP=8W  
pivot=data[pivotIndex]; Yl3PZ*#@ Q  
`SpS?mWA  
SortUtil.swap(data,pivotIndex,j); 00 ,j neF  
ty8!"-V1  
file://partition JH,fg K+[  
l=i-1; m|?J^_  
r=j; mAERZ<I  
do{ T[II;[EiE  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ~ZIRCTQ"  
SortUtil.swap(data,l,r); P_Ja?)GT  
} Tm,L?Jh  
while(l SortUtil.swap(data,l,r); Q>Q}/{8!  
SortUtil.swap(data,l,j); "uNxKLDB  
^qy-el  
if((l-i)>THRESHOLD){ _A~gqOe  
stack[++top]=i; E^ti !4{<  
stack[++top]=l-1; 4B,A+{3yL  
} tA n6pGp  
if((j-l)>THRESHOLD){ qOanu  
stack[++top]=l+1; z-E4-\a  
stack[++top]=j; _ o3}Ly}  
} '.v^seU  
3`!KndY1  
} `cRB!w=KHV  
file://new InsertSort().sort(data); j ZafwBi  
insertSort(data); O/~^}8TLL  
} F'Vl\qPt  
/** (KU@hp-\  
* @param data CplRnKra  
*/ X Y?@^  
private void insertSort(int[] data) { n[-!Jp[  
int temp; ':dHYvP/UX  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); jg/<"/E  
} N#ObxOE6T"  
} SHh(ujz,  
} EF~PM  
9^olAfX`dB  
} 2"^9t1C2  
%j; cXN  
归并排序: s]>%_(5  
hdb4E|'A  
package org.rut.util.algorithm.support; Puh&F< B  
}aIf IJ  
import org.rut.util.algorithm.SortUtil; #+\G- =-  
9mm(?O~'p  
/** /ep~/#Ia  
* @author treeroot ?8/h3xV;  
* @since 2006-2-2 ]vErF=[U,  
* @version 1.0 ';F][x5j  
*/ 1>{(dd?L  
public class MergeSort implements SortUtil.Sort{ )P])0Y-  
{D#`+uw  
/* (non-Javadoc) xx8na8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  (v}:  
*/ YJ$ =`lIM  
public void sort(int[] data) { kRPg^Fw"Vw  
int[] temp=new int[data.length]; 0rUf'S ?K  
mergeSort(data,temp,0,data.length-1); @9a=D<'>  
} s,x]zG"  
eW%jDsC  
private void mergeSort(int[] data,int[] temp,int l,int r){ $Plk4 o*g  
int mid=(l+r)/2; Tkf !Y?  
if(l==r) return ; yL-L2  
mergeSort(data,temp,l,mid); D$;/ l}s?  
mergeSort(data,temp,mid+1,r); 89bKnsV  
for(int i=l;i<=r;i++){ }fZBP]<I(  
temp=data; nt6"}vO  
} @d|9(,Q  
int i1=l; m6D4J=59  
int i2=mid+1; x ,W+:l9~s  
for(int cur=l;cur<=r;cur++){ sn%fE  
if(i1==mid+1) kF .b)  
data[cur]=temp[i2++]; KMcP!N.I  
else if(i2>r) |zKcL3*  
data[cur]=temp[i1++]; 5$X{{j2  
else if(temp[i1] data[cur]=temp[i1++]; tHeLq*))  
else >wwEa4   
data[cur]=temp[i2++]; 5JXLfYTUI  
} f -5ZXpWs'  
} QZol( 2~Y  
D.?gV_  
} '-=?lyKv  
I4'j_X t  
改进后的归并排序: /Z_QCj  
75f.^4/%  
package org.rut.util.algorithm.support; "?SnA +)  
v},sWjv  
import org.rut.util.algorithm.SortUtil; da@ .J9  
v#xF;@G  
/** om6R/K  
* @author treeroot ,fn=%tiUk  
* @since 2006-2-2 9 pn1d.  
* @version 1.0 FBsw\P5w  
*/ `u-Y 5mY  
public class ImprovedMergeSort implements SortUtil.Sort { &7LfNN`  
0ZN/-2c A#  
private static final int THRESHOLD = 10; mf#oa~_  
q`hg@uwA{`  
/* wlJ1,)n^2  
* (non-Javadoc) #A!0KN;GC2  
* <>TBM^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yyc&'J  
*/ 3B+Rx;>h  
public void sort(int[] data) { O9Aooe4W=  
int[] temp=new int[data.length]; \=)h6AG  
mergeSort(data,temp,0,data.length-1); r+Y1m\  
} x{E[qH_1Fm  
tr Ls4o,  
private void mergeSort(int[] data, int[] temp, int l, int r) { ~gN'";1i  
int i, j, k; `F#KXk  
int mid = (l + r) / 2; SW7%SX,xM  
if (l == r) .kVga+la?  
return; ) =[Tgh  
if ((mid - l) >= THRESHOLD) ?jbam! A  
mergeSort(data, temp, l, mid); W2RS G~|  
else kVY@q&p  
insertSort(data, l, mid - l + 1); C;` fOCz^  
if ((r - mid) > THRESHOLD) jolCR-FDu  
mergeSort(data, temp, mid + 1, r); <Vim\  
else ]+AI:  
insertSort(data, mid + 1, r - mid); $1e@3mzM  
@,]v'l!u  
for (i = l; i <= mid; i++) { <IYt*vlm  
temp = data; 4.8,&{w<m  
} ; OsN^   
for (j = 1; j <= r - mid; j++) { #qWEyb2UZ  
temp[r - j + 1] = data[j + mid]; 0:*$i(2  
} n2E2V<#   
int a = temp[l]; hf[K\aAk  
int b = temp[r]; S`::f(e  
for (i = l, j = r, k = l; k <= r; k++) { 7j+.H/2  
if (a < b) { (\j<`"n  
data[k] = temp[i++]; I ; _.tG  
a = temp; IX}l)t[:(  
} else { 39"'Fz?1  
data[k] = temp[j--]; f] Vz!hM~  
b = temp[j]; N|DY)W  
} x {rt\OT  
} `fs[C  
} vI-KH:r"{  
MmX42;Pw  
/** U+KbvkX wj  
* @param data MIgIt"M jz  
* @param l 7Ny>W(8  
* @param i  m ]\L1&  
*/  6?6 u  
private void insertSort(int[] data, int start, int len) { z"<PveVo  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); |^ qW   
} 8]O|$8'"  
} 1g;3MSn~  
} 7cC$)  
} L@/+u+j0  
KksbhN{AB  
堆排序: Z"n]y4h  
4AGc2e'u  
package org.rut.util.algorithm.support; <,m}TTq  
f:TW<  
import org.rut.util.algorithm.SortUtil; v#~,)-D&  
_?{2{^v  
/** DT*/2TH*l  
* @author treeroot * 08LW|:,  
* @since 2006-2-2 /F\7_  
* @version 1.0 p'H5yg3h  
*/ 8w{V[@QLn  
public class HeapSort implements SortUtil.Sort{ 0xC!d-VIJ  
dWI\VS9  
/* (non-Javadoc) w(vf>L6(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9`xq3EL2T  
*/ XLtuck  
public void sort(int[] data) { `p!.K9r7   
MaxHeap h=new MaxHeap(); 4o%hH  
h.init(data); toF@@ %  
for(int i=0;i h.remove(); pRC#DHcHh  
System.arraycopy(h.queue,1,data,0,data.length); y"2c; *7[{  
} !l'Zar  
CSs3l  
private static class MaxHeap{ =%a.C(0&G  
1Ao"DxZHy7  
void init(int[] data){ "MyYu}AD  
this.queue=new int[data.length+1]; "DUL} "5T  
for(int i=0;i queue[++size]=data; 5vS'Qhc  
fixUp(size); lY6U$*9c  
} pM>.z9  
} >9|Q,/b0  
'HOt?lpu!  
private int size=0; ;N)qNiJY  
ztu N0}'  
private int[] queue; [\I\).  
P| G:h&  
public int get() { n |(Y?`(  
return queue[1]; 7Q^t(  
} n.XT-X^  
poM VB{U  
public void remove() { _N<8!(|w  
SortUtil.swap(queue,1,size--); Z rvb %  
fixDown(1); P/^:IfuR  
} Orz Dr  
file://fixdown r> NgJf,  
private void fixDown(int k) { 0n5N-b?G-@  
int j; J&lQ,T!?B  
while ((j = k << 1) <= size) { T'w=v-(J  
if (j < size %26amp;%26amp; queue[j] j++; oqG 0 @@  
if (queue[k]>queue[j]) file://不用交换 <}|+2f233+  
break; u\6:Txqq  
SortUtil.swap(queue,j,k); v=|ahsYC  
k = j; rl!c\  
} XrYz[h*)!  
} 6}[W%S]8  
private void fixUp(int k) { gPDc6{/C<  
while (k > 1) { ;0ake%v]  
int j = k >> 1;  M7hff4c  
if (queue[j]>queue[k]) 63ht|$G  
break; @*F NWT6  
SortUtil.swap(queue,j,k); `?~pk)<C].  
k = j; 9HWtdJ+^C=  
} 'DVPx%p  
} ~~>D=~B0'  
>YD? pDPb/  
} " MlY G6  
ptX;-'j(  
} >i=mw5`D]  
,b2Cl[  
SortUtil: FLi)EgZXt  
=EFF2M`F  
package org.rut.util.algorithm; xqIt?v2c  
 $ l Y  
import org.rut.util.algorithm.support.BubbleSort; Fz-Bd*uS  
import org.rut.util.algorithm.support.HeapSort; o ;.j_  
import org.rut.util.algorithm.support.ImprovedMergeSort; $n!saPpxS  
import org.rut.util.algorithm.support.ImprovedQuickSort; `j@2[XdHu  
import org.rut.util.algorithm.support.InsertSort; ij/ |~-!  
import org.rut.util.algorithm.support.MergeSort; @ 3FTf"#Y  
import org.rut.util.algorithm.support.QuickSort; U^[<G6<9]  
import org.rut.util.algorithm.support.SelectionSort; 7?e*b(vd  
import org.rut.util.algorithm.support.ShellSort; q0$}MB6  
Xn4U!<RT"  
/** }VdohX-  
* @author treeroot OSxr@  
* @since 2006-2-2 C}#JvNyQ  
* @version 1.0 nT9B?P>  
*/ &Zd! |u  
public class SortUtil { h8Kri}z;M  
public final static int INSERT = 1; 6!O~:\`DJ  
public final static int BUBBLE = 2; a3JG&6-  
public final static int SELECTION = 3; !fjDO!,!  
public final static int SHELL = 4; Kh}#At^C8e  
public final static int QUICK = 5; 5^*I]5t8  
public final static int IMPROVED_QUICK = 6; ,SH))%Cyt  
public final static int MERGE = 7; c:M~!CXO  
public final static int IMPROVED_MERGE = 8; c V=h 8F  
public final static int HEAP = 9; (m25ZhW  
G-xW&wC-  
public static void sort(int[] data) { u05Zg*.[  
sort(data, IMPROVED_QUICK); ?(4 =:o  
} Js ~_8  
private static String[] name={ qf7 lQovK  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" o{lR_  
}; g7rn|<6FI  
hr(E, TAe  
private static Sort[] impl=new Sort[]{ ma,H<0R  
new InsertSort(), ;5?$q  
new BubbleSort(), hxGZ}zq*S  
new SelectionSort(), 6j+_)7.V  
new ShellSort(), QVsOB$  
new QuickSort(), ^,qi` Tk  
new ImprovedQuickSort(), 7NE"+EP\{2  
new MergeSort(), :iP2e+j  
new ImprovedMergeSort(), tY~EB.%  
new HeapSort() ~sx?aiO  
}; 3[amCKel  
_f8Wa u# "  
public static String toString(int algorithm){ &82Za%  
return name[algorithm-1]; \x5b=~/   
} B ;@7  
fczId"   
public static void sort(int[] data, int algorithm) { |gg 6|,Bt4  
impl[algorithm-1].sort(data); gDa}8!+i  
} =`Pgo5A  
sEm-Td+A5  
public static interface Sort { mfc\w'  
public void sort(int[] data); pa*bqPi  
} 3dTz$s/[  
8m\* ~IX=  
public static void swap(int[] data, int i, int j) { gi#bU  
int temp = data; Q30A aG}f  
data = data[j]; ~7IXJeon  
data[j] = temp; "AMbU6 8  
} _o`+c wc  
} ?A+-k4l  
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