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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。 $GYy[-.`  
插入排序: plp).Gq  
N),Zb^~nw  
package org.rut.util.algorithm.support; Bz24U wcZ  
N.VzA 6 C  
import org.rut.util.algorithm.SortUtil; L$jRg  
/** +ivz  
* @author treeroot ir\   
* @since 2006-2-2 %;zA_Wg  
* @version 1.0 .t["kaA  
*/ Gd'^vqo<  
public class InsertSort implements SortUtil.Sort{ E2\)>YF{ P  
x^SE>dy ?z  
/* (non-Javadoc) mB!81%f%|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X/.|S57  
*/ u]oS91  
public void sort(int[] data) { \F<]l6E  
int temp; *D\nsJ*g  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |D^[]*cEH  
} Ak1f*HGl|  
} V^f'4*~'  
} 4BCZ~_  
,2]6cP(6qQ  
} HL_MuyE  
B'=*92i>S  
冒泡排序: M r@M~ -  
3kJAaI8   
package org.rut.util.algorithm.support; R!,RZ?|v  
1&m08dZm5  
import org.rut.util.algorithm.SortUtil; MLp5Y\8*  
|_ ;-~bmb  
/** "r|O /   
* @author treeroot Et7AAV*8g  
* @since 2006-2-2 r_ o2d8  
* @version 1.0 QALMF rWH  
*/ d2 d^XMe!  
public class BubbleSort implements SortUtil.Sort{ "7gHn0e>  
"Pu P J|  
/* (non-Javadoc) V# Wd   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'r'uR5jR  
*/ .!Z.1:YR  
public void sort(int[] data) { tnTr &o#  
int temp; Pl 5+Oo  
for(int i=0;i for(int j=data.length-1;j>i;j--){ gzuM>lf*{  
if(data[j] SortUtil.swap(data,j,j-1); OtnYv  
} ]P 2M  
} yhTe*I=Gk  
} uT=sDWD :  
} 2Yyc`o0R;h  
W<58TCd  
} <iTaJa$0m  
dLo%+V#/A  
选择排序: ] e&"CF  
T9(~^}_+9  
package org.rut.util.algorithm.support; ()P?fed  
fXL$CgXG\x  
import org.rut.util.algorithm.SortUtil; 9@ ^/ON\O  
kKCkjA:o##  
/** y_a~>S  
* @author treeroot id*UTY Tg  
* @since 2006-2-2 S__ o#nf`%  
* @version 1.0 'av OQj]`K  
*/ 2O4U ytN  
public class SelectionSort implements SortUtil.Sort { esxU44  
&hZcj dB  
/* =n$,Vv4A  
* (non-Javadoc) Gd"lB*^Ht  
* Vg2s~ce{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f)*}L?  
*/ S"fnT*:.%  
public void sort(int[] data) { _~6AUwM  
int temp; jd~r~.y  
for (int i = 0; i < data.length; i++) { -BB5bsjA  
int lowIndex = i; JSO>rpO  
for (int j = data.length - 1; j > i; j--) { dmf~w_(7  
if (data[j] < data[lowIndex]) { Prr<:q  
lowIndex = j; a-O9[?G/x  
} \ar.(J  
} 8 v&5)0u  
SortUtil.swap(data,i,lowIndex); 0xH$!?{b  
} +DVU"d  
} U^Hymgb%  
d<#Xqc  
} VP|9Cm=Fg  
jp2l}C  
Shell排序:   }/M ~  
C[wnor!  
package org.rut.util.algorithm.support; iT I W;Cv  
V_0e/7}Ya  
import org.rut.util.algorithm.SortUtil; II),m8G  
Ma_! 1Y  
/** ^@jOS{f l  
* @author treeroot 2)mKcUL-  
* @since 2006-2-2 ^2Op?J  
* @version 1.0 |QXW$  
*/ B<6*Ktc  
public class ShellSort implements SortUtil.Sort{ KJSN)yn\  
e}7qZ^  
/* (non-Javadoc) A D~\/V&+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Px)VDs=k  
*/ $(C71M|CT  
public void sort(int[] data) { :#b[gWl0Ru  
for(int i=data.length/2;i>2;i/=2){ }1'C!]j  
for(int j=0;j insertSort(data,j,i); a_FJNzL  
} {iHC;a5gb$  
} S[*e K Z  
insertSort(data,0,1); .lRO; D  
} Rqu;;VI[  
=@B9I<GKf  
/** ()XL}~I{!A  
* @param data !+CRS9\D   
* @param j Qx$Yj  
* @param i #&&^5r-b-  
*/ Z@j0J[s  
private void insertSort(int[] data, int start, int inc) { 9e.n1  
int temp; p`XI(NI  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); =q>eoXp  
} CJ KFNa  
} :m-HHWMN  
} 6ffrV  
1G$kO90  
} B*,9{g0m/  
/ptIxe  
快速排序: "jb?P$  
`}Q+:  
package org.rut.util.algorithm.support; 5AQ $xm4  
'J+Vw9 s7  
import org.rut.util.algorithm.SortUtil; H6*F?a`)I  
;J2=6np  
/** ^'[Rb!Q8  
* @author treeroot `P"-9Ue=  
* @since 2006-2-2 3 u-j`7  
* @version 1.0 N'|zPFk g  
*/ G8eAj%88  
public class QuickSort implements SortUtil.Sort{ (;cbgHo%}  
,I'Y)SLx  
/* (non-Javadoc) \y#gh95  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Pxy(YMv  
*/ c~z{/L  
public void sort(int[] data) { 8vc4J5  
quickSort(data,0,data.length-1); 5U%u S^%DP  
} :6Bk<  
private void quickSort(int[] data,int i,int j){ pSay^9ZI  
int pivotIndex=(i+j)/2; ^yjc"r%B  
file://swap &!Y^DR/  
SortUtil.swap(data,pivotIndex,j); e)>Z&e,3  
SIzW3y[  
int k=partition(data,i-1,j,data[j]); 8V^gOUF.  
SortUtil.swap(data,k,j); ejD;lvf  
if((k-i)>1) quickSort(data,i,k-1); En-eG37 l  
if((j-k)>1) quickSort(data,k+1,j); =DvnfT<  
sj Yg  
} 3E:wyf)i"  
/** A+NLo[swwu  
* @param data D",ZrwyJ  
* @param i J'Gn M?M  
* @param j 3|g'1X}  
* @return X~%Wg*Hm  
*/ WWH T;ST  
private int partition(int[] data, int l, int r,int pivot) { "k5 C?~  
do{ w/>k  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); LYv+Sv  
SortUtil.swap(data,l,r); <-X)<k  
} u!X[xe;  
while(l SortUtil.swap(data,l,r); GS\-  
return l; 0t6s20*q  
} Kx$?IxZ  
V=\&eS4^"  
} +X"TiA7{j  
H&`p9d*(e  
改进后的快速排序: 4s.wQ2m  
%GjF;dJ  
package org.rut.util.algorithm.support; N] }L*o&  
h`?0=:Tru  
import org.rut.util.algorithm.SortUtil; RhXX/HFk  
+ ECV|mkk  
/** .K;*uq:0  
* @author treeroot }=;N3Q" #y  
* @since 2006-2-2 s%;18V:pi  
* @version 1.0 x>p=1(L  
*/ C5 ^_R  
public class ImprovedQuickSort implements SortUtil.Sort { +2MsyA?6_  
9e1gjC\c  
private static int MAX_STACK_SIZE=4096; NNb17=q_v  
private static int THRESHOLD=10; FHqa|4Ie  
/* (non-Javadoc) '+Ts IJh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pA"pt~6  
*/ rh/3N8[6  
public void sort(int[] data) { ,5H$Tm,6\S  
int[] stack=new int[MAX_STACK_SIZE]; 'xvV;bi  
FL"IPX;S  
int top=-1; }a-ikFQ]  
int pivot; i#iY;R8  
int pivotIndex,l,r; !5Z?D8dcx  
Su6ZO'[)  
stack[++top]=0; :G,GHU'/78  
stack[++top]=data.length-1; rOS fDv  
zxTm`Dh;[  
while(top>0){ xL=g(FN(6L  
int j=stack[top--];  FxD\F  
int i=stack[top--]; uWvl<{2  
mWta B>f  
pivotIndex=(i+j)/2; hFs0qPVY  
pivot=data[pivotIndex]; u,4,s[  
V]`V3cy1+3  
SortUtil.swap(data,pivotIndex,j); !V7VM_}@Y  
yEzp+Ky  
file://partition Ed.~9*m  
l=i-1;  2gb49y~  
r=j; ZLxe$.V_  
do{ hDjsGB|Fz  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _OHz6ag  
SortUtil.swap(data,l,r); IeZ}`$[H  
} &=K-~!?  
while(l SortUtil.swap(data,l,r); _QkU,[E  
SortUtil.swap(data,l,j); rL&585  
DTAEfs!ZW  
if((l-i)>THRESHOLD){ SDcD(G  
stack[++top]=i; 3sHC1 +  
stack[++top]=l-1; *M6M'>Tin  
} KvkiwO(  
if((j-l)>THRESHOLD){ E':y3T@."  
stack[++top]=l+1; (~zdS.  
stack[++top]=j; nu4GK}xI  
} H /*^$>0Uo  
>x (^g~i  
} mzfj!0zR*  
file://new InsertSort().sort(data); Q3_ia 5 `O  
insertSort(data); ,r:. 3.  
} ([`-*Hy  
/** W5EB+b49KM  
* @param data 3,S5>~R=  
*/ b;Q cBGwKT  
private void insertSort(int[] data) { (:vY:-\ bO  
int temp; w9H%u0V?  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %fK"g2:  
} DyYl97+Z?  
} J:5%ff~r\  
} >c;q IP)Z  
J$]d%p_I  
} W(a=ev2sa  
oRmN|d ~4  
归并排序: M I/ 9?B  
qf(!3  
package org.rut.util.algorithm.support; G{YJ(6etZ  
%l5Uy??Z  
import org.rut.util.algorithm.SortUtil; Zb<DgJ=3  
SN\;&(?G  
/** g>T'R Vb  
* @author treeroot [[LCEw  
* @since 2006-2-2 ){L`hQ*=w  
* @version 1.0 cQS}pQyYN  
*/  UTHGjE  
public class MergeSort implements SortUtil.Sort{ V)_mo/D!D  
/8 Ca8Ju  
/* (non-Javadoc) f\2'/g}6a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '~<D[](/F  
*/ *"q ~z  
public void sort(int[] data) { 6 @'v6 1'  
int[] temp=new int[data.length]; & i)p^AmM  
mergeSort(data,temp,0,data.length-1); |A[Le ;,  
} -8#Of)W  
e nDjP  
private void mergeSort(int[] data,int[] temp,int l,int r){ | t3_E  
int mid=(l+r)/2; "&77`R  
if(l==r) return ; ;, 'eO i  
mergeSort(data,temp,l,mid); $l0^2o=  
mergeSort(data,temp,mid+1,r); haqL DVrf  
for(int i=l;i<=r;i++){ j""u:l^+x  
temp=data; &AoXv`l4  
} . m@Sk`s  
int i1=l; W 29@`93  
int i2=mid+1; ;_1D-Mf  
for(int cur=l;cur<=r;cur++){ :&9#p% /  
if(i1==mid+1) N=)N   
data[cur]=temp[i2++]; y*2:(nI  
else if(i2>r) KR?-<  
data[cur]=temp[i1++]; (VU: &.  
else if(temp[i1] data[cur]=temp[i1++]; ` ~VV1  
else HwiG~'Ah9  
data[cur]=temp[i2++]; SI4M<'fK  
} o%RyE]pw,  
} 7K%Ac  
 gX.4I;  
} }Q/xBC)  
JY4 +MApN  
改进后的归并排序: QEm6#y  
AQ'~EbH(  
package org.rut.util.algorithm.support; #e{l:!uS\  
Kw"7M~  
import org.rut.util.algorithm.SortUtil; o3qBRT0[R  
M,3sK!`>  
/** }9:d(B9;  
* @author treeroot G# .z((Rj  
* @since 2006-2-2 m80QMosp  
* @version 1.0 k`'^e/  
*/ .ie\3q)  
public class ImprovedMergeSort implements SortUtil.Sort { '\[GquK;P  
`G@]\)-!  
private static final int THRESHOLD = 10; WVir[Kv%  
4$@5PS#,  
/* 118A6qyi  
* (non-Javadoc) rB< UOe  
* M(jSv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [qI, $ +  
*/ ysu"+J  
public void sort(int[] data) { l)4KX{Rz{A  
int[] temp=new int[data.length]; "2o)1G  
mergeSort(data,temp,0,data.length-1); "tn]s>iAd=  
} pbl;n|  
XSpX6fq  
private void mergeSort(int[] data, int[] temp, int l, int r) { d+\o>x|Y!Y  
int i, j, k; ApG_Gd.  
int mid = (l + r) / 2; Dc}-wnga  
if (l == r) q~ T*R<S  
return; !Hr~B.f7  
if ((mid - l) >= THRESHOLD) &?#V*-;^  
mergeSort(data, temp, l, mid); '[I?G6  
else 69p>?zn  
insertSort(data, l, mid - l + 1); OtBVfA:[  
if ((r - mid) > THRESHOLD) R]/3`X9!d>  
mergeSort(data, temp, mid + 1, r); qa.nm4"6+  
else +%UfnbZ  
insertSort(data, mid + 1, r - mid); /hQTV!\u  
0h _9  
for (i = l; i <= mid; i++) { T oTehVw  
temp = data; L(fOe3 v  
} g\,pZ]0i  
for (j = 1; j <= r - mid; j++) { >h(n8wTP  
temp[r - j + 1] = data[j + mid]; +ZQf$@+  
} bLhTgss](  
int a = temp[l]; ;wa- \Z  
int b = temp[r]; l#Ipo5=  
for (i = l, j = r, k = l; k <= r; k++) { U_K"JOZ  
if (a < b) { nxS|]  
data[k] = temp[i++]; h-].?X,]Q  
a = temp; ;xS@-</:  
} else { NhU~'k  
data[k] = temp[j--]; h.l^f>, /  
b = temp[j]; [U5[;BNRD  
} !9_HZ(W&  
} HQCxO?  
} g=XvqD<  
yT.h[yv"w  
/** -Wd2FD^x  
* @param data ;}@.E@s%'  
* @param l {^a"T'+  
* @param i 'JU(2mF  
*/ nm`[\3R  
private void insertSort(int[] data, int start, int len) { ~k^rIjR  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); (y *7 g f  
} :k*'M U}  
} Ub2t7MU  
} &)zNu  
} 3CL/9C>  
.!e):&(8  
堆排序: 2!Yq9,`  
a\pOgIp  
package org.rut.util.algorithm.support; 'y[74?1  
($pNOG H  
import org.rut.util.algorithm.SortUtil; MKf|(6;~  
?x1sm"]p'  
/** _~/F-  
* @author treeroot SR!EQ<  
* @since 2006-2-2 _2xNio&  
* @version 1.0 -K eoq  
*/ z6)b XL[f  
public class HeapSort implements SortUtil.Sort{ *:gx1wd  
$P&{DOiKS  
/* (non-Javadoc) #.L9/b(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZP~Mgz{f  
*/ ABb,]%  
public void sort(int[] data) { >'ev_eAk  
MaxHeap h=new MaxHeap(); b+Vfi9<  
h.init(data); JZI)jIh  
for(int i=0;i h.remove(); 2[ = =  
System.arraycopy(h.queue,1,data,0,data.length); <:/Lap#D^  
} &W+lwEu  
;)$bhNFHx  
private static class MaxHeap{ >Q3_-yY+  
: fMQ,S0  
void init(int[] data){ 6B`XHdCq  
this.queue=new int[data.length+1]; MdXOH$ ps  
for(int i=0;i queue[++size]=data; !IF]P#  
fixUp(size); =1sGT;>  
} DcYL8u  
} -:cBVu-m  
`yF6-F  
private int size=0; .j^tFvN~L  
iZY4+ X  
private int[] queue; (+uM |a  
X .,Lmh  
public int get() { W>TG!R 5  
return queue[1]; 0,~||H{  
} kb3>q($  
+q n[F70}  
public void remove() { ,2oFt\`.r  
SortUtil.swap(queue,1,size--); 3r^Ls[ey  
fixDown(1); S!WG|75B  
} #O 2g]YH  
file://fixdown "o_s=^U  
private void fixDown(int k) { y_mTO4\C2  
int j; X})5XYvA*  
while ((j = k << 1) <= size) { ^Gi9&fS,  
if (j < size %26amp;%26amp; queue[j] j++; 3 PkVMX  
if (queue[k]>queue[j]) file://不用交换 Znr6,[U+q  
break; wnUuoX(  
SortUtil.swap(queue,j,k); Ig&H0S  
k = j; WbJ|]}hJ\  
} pPL)!=o!  
} HQ /D)D  
private void fixUp(int k) { @}; vl  
while (k > 1) { \ SCi\j/a(  
int j = k >> 1; >AK9F. _z  
if (queue[j]>queue[k]) )j,Y(V$P  
break; de=){.7Y  
SortUtil.swap(queue,j,k); f/xQy}4+~E  
k = j; ~:FF"T>  
} xVxN @[  
} #q LsAw--Q  
mrmm@?  
} |\.:h":!0~  
Me 5Xd|  
} H(?)v.%  
O06 2c)vIY  
SortUtil: /U$5'BoS  
,3XlX(P  
package org.rut.util.algorithm; *^y,Gg/  
<+y%k~("  
import org.rut.util.algorithm.support.BubbleSort; m^!Kthq  
import org.rut.util.algorithm.support.HeapSort; 0<i8 ;2KD  
import org.rut.util.algorithm.support.ImprovedMergeSort; i?wEd!=w  
import org.rut.util.algorithm.support.ImprovedQuickSort; >}T}^F  
import org.rut.util.algorithm.support.InsertSort; '\B0#z3  
import org.rut.util.algorithm.support.MergeSort; r 4 $<,~  
import org.rut.util.algorithm.support.QuickSort; rEHlo[7^  
import org.rut.util.algorithm.support.SelectionSort; o|G'vMph  
import org.rut.util.algorithm.support.ShellSort; $^:s)Yv  
Qm_IU!b  
/** WOg pDs  
* @author treeroot bv^wE,+?o  
* @since 2006-2-2 f9K+o-P.h  
* @version 1.0 7 D(Eo{ue  
*/ KvjsibI/Y  
public class SortUtil { m!5MGq~  
public final static int INSERT = 1; gV}c4>v(  
public final static int BUBBLE = 2; !78P+i  
public final static int SELECTION = 3; o75l&`  
public final static int SHELL = 4; _V`F_C\\#  
public final static int QUICK = 5; HPMj+xH  
public final static int IMPROVED_QUICK = 6; Ec9%RAxl  
public final static int MERGE = 7; t:x"]K  
public final static int IMPROVED_MERGE = 8; >sjvE4s  
public final static int HEAP = 9; j>8S,b=%  
n'To:  
public static void sort(int[] data) { "D,}|  
sort(data, IMPROVED_QUICK); &=*sN`  
} R$h B9BK  
private static String[] name={ 2c*w{\X  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" / Q| Z&-c  
}; ' !2NSv  
\@[Y ~:  
private static Sort[] impl=new Sort[]{ buldA5*!o  
new InsertSort(), R]&lVXyH  
new BubbleSort(), S5BS![-QK  
new SelectionSort(), L35]'Jua  
new ShellSort(), oeYUsnsbi  
new QuickSort(), 2= Y8$-  
new ImprovedQuickSort(), cYgd1  
new MergeSort(), ' hDs.Wnu  
new ImprovedMergeSort(), CKnPMvmz  
new HeapSort() D&o ~4Qvc]  
}; J#IVu?B  
z6*r<>Bf+b  
public static String toString(int algorithm){ (gRTSd T ?  
return name[algorithm-1]; mEmgr(W  
} Cxd^i  
h ,\5C/  
public static void sort(int[] data, int algorithm) { )[ QT ?;  
impl[algorithm-1].sort(data); q eDXG  
} 5O(U1 *  
%I=/ y  
public static interface Sort { wRdN(`;v  
public void sort(int[] data); EK.n $  
} EfB.K}b^  
!hFzIp  
public static void swap(int[] data, int i, int j) { eZ]>;5  
int temp = data; j[Jwa*GQP  
data = data[j]; : HM~!7e  
data[j] = temp; .6!cHL3ln  
} bt*  
} o@m7@$7  
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