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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。 ta+MH,  
插入排序: !9p;%Ny`  
AS? ESDC  
package org.rut.util.algorithm.support; 'JK"3m}nT  
]9]o*{_+(f  
import org.rut.util.algorithm.SortUtil;  oo4aw1d  
/** :/<SJ({q  
* @author treeroot Q}6!t$Vk  
* @since 2006-2-2 1O,:fTG<  
* @version 1.0 oqUF_kh  
*/ ;U)xZ _Ew~  
public class InsertSort implements SortUtil.Sort{ 3Z%~WE;I  
qEJ#ce]G  
/* (non-Javadoc) !!:mjq<0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 19j"Zxdg Y  
*/ xm$-:N0q  
public void sort(int[] data) { 9Rd& Jq^  
int temp; UI%Z`.&  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $s]vZ(H  
} ZULnS*V;5  
} iO@UzD #v  
} RzOcz=A}  
Cno+rmsfT  
} SPN5H;{[]K  
kJ[r.)HU  
冒泡排序: P+:DLex  
HE|XDcYO  
package org.rut.util.algorithm.support; KBOp}MEz  
!*G%vOa  
import org.rut.util.algorithm.SortUtil; sD ,=_q@  
SE<?l  
/** wG@f~$   
* @author treeroot Mj<T+Ohz  
* @since 2006-2-2 67b w[#v  
* @version 1.0 Q5xQ5Le  
*/ Ek6z[G` O  
public class BubbleSort implements SortUtil.Sort{ %5$)w;p.$'  
mJNw<T4!/  
/* (non-Javadoc) E^4}l2m_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O;lGh1.  
*/ w&[&ZDsK  
public void sort(int[] data) { ISHzlEY  
int temp; fW=vN0Z  
for(int i=0;i for(int j=data.length-1;j>i;j--){ c]%~X&Tg`  
if(data[j] SortUtil.swap(data,j,j-1); w<&R|= 93  
} K;Fs5|gFU  
} lW|`8ykp  
} W+Q^u7K  
} z3Zo64V~7  
Q].p/-[(  
} (Cb;=:3G  
\"pp-str  
选择排序: /Os6i&;  
A9_} RJ9  
package org.rut.util.algorithm.support; !9t,#?!  
WCD)yTg:ES  
import org.rut.util.algorithm.SortUtil; z50P* eS  
2!Qg1hM  
/** Xti.yQx\  
* @author treeroot ["^? vhv  
* @since 2006-2-2 `Kbf]"4q  
* @version 1.0 8+@j %l j  
*/ hQ ?zc_ 3  
public class SelectionSort implements SortUtil.Sort { fSF_O}kLp  
gY&WH9sp?9  
/* %#x l+^  
* (non-Javadoc) U8zCV*ag  
* I%:\"g"c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U#Wg"W{  
*/ WZM  
public void sort(int[] data) { UR~s\m  
int temp; ub;:"ns}  
for (int i = 0; i < data.length; i++) { v>0I=ut  
int lowIndex = i; p""\uG'  
for (int j = data.length - 1; j > i; j--) { +"1fr  
if (data[j] < data[lowIndex]) { .XT]\'vW  
lowIndex = j; -v! ;  
} Ye S5%?Fk  
} s}F.D^^G  
SortUtil.swap(data,i,lowIndex); 1ixBwnp?  
} wxo*\WLe  
} MY}/h@  
A{p_I<  
} I(H9-!&  
Z4oD6k5oc  
Shell排序: +rJDDIb  
7M)<Sv  
package org.rut.util.algorithm.support; E#R1  
o3$dl`'  
import org.rut.util.algorithm.SortUtil; I0*N "07n  
X-*LA*xbN  
/** H'+3<t>  
* @author treeroot lVCnu> 8  
* @since 2006-2-2 $0R5 ]]db)  
* @version 1.0 y$+=>p|d.^  
*/ a+RUSz;DL  
public class ShellSort implements SortUtil.Sort{ 2HO2  
@ZRg9M:N  
/* (non-Javadoc) DwGRv:&HH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vmg[/#  
*/ nC(Lr,(  
public void sort(int[] data) { 2@W`OW Njm  
for(int i=data.length/2;i>2;i/=2){ y+p"5s"  
for(int j=0;j insertSort(data,j,i); dVg'v7G&V(  
} Ma4eu8  
} vi.INe  
insertSort(data,0,1); CG;+Z-"X  
} g:Q:cSg<  
{n&GZG"f  
/** Id1de>:;  
* @param data orOq5?3  
* @param j EU Z7?4o  
* @param i z\"9T?zoo  
*/ k t'[  
private void insertSort(int[] data, int start, int inc) { fZoQQ[s  
int temp; :k-@w5(  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); g/(BV7V  
} *eGG6$I  
} Zv2]X-  
} G5%k.IRz  
_0BQnzC=  
} 2}XxRJ0   
c/^l2CJ0  
快速排序: 4 |bu= T  
Y9I|s{~  
package org.rut.util.algorithm.support; %}JSR y  
O0;mXH  
import org.rut.util.algorithm.SortUtil; +@c$n`>)  
u{7->[=  
/** -oTdi0P  
* @author treeroot * =*\w\ te  
* @since 2006-2-2 L1WvX6  
* @version 1.0 *pDS%,$xe  
*/ p( )LQT!  
public class QuickSort implements SortUtil.Sort{ X"vDFE`?  
I:w+lchAMe  
/* (non-Javadoc) 1_TniR3z1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hYh~%^0dt  
*/ S=W^iA6>  
public void sort(int[] data) { _DAqL@5n  
quickSort(data,0,data.length-1); &*bpEdkZ  
} v_WF.sb~  
private void quickSort(int[] data,int i,int j){ 8H1&=)M=  
int pivotIndex=(i+j)/2; QeN7~ J  
file://swap rp^:{6O  
SortUtil.swap(data,pivotIndex,j); re,}}'  
@+1AYVz(k  
int k=partition(data,i-1,j,data[j]); B`gH({U  
SortUtil.swap(data,k,j); I2krxLPd  
if((k-i)>1) quickSort(data,i,k-1); byTH SRt  
if((j-k)>1) quickSort(data,k+1,j); 'v@*xF/L6a  
YI;MS:Qj  
} 6Eus_aP  
/** jcjl q-x  
* @param data JNT|h zV  
* @param i 'MW O3  
* @param j |tU wlc>  
* @return rxs:)# ?A  
*/ 2R ^6L@fw  
private int partition(int[] data, int l, int r,int pivot) { a_]l?t  
do{ CMyz!jZ3  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); #2lvRJB  
SortUtil.swap(data,l,r); )TyP{X>  
} ]omBq<ox'Y  
while(l SortUtil.swap(data,l,r); 'vYt_T  
return l; !]5V{3  
} jtq ^((Ux  
M`8c|*G   
} hd,O/-m#  
wCV~9JTJ!  
改进后的快速排序: u?rX:KkS  
bvHQ# :}H  
package org.rut.util.algorithm.support; bR1Q77<G\  
7F_N{avr  
import org.rut.util.algorithm.SortUtil; Z$r7Hi  
ur7S K(#  
/** <:&{c-f/  
* @author treeroot FUZuS!sJ  
* @since 2006-2-2 R,BINp  
* @version 1.0 h(GSM'v  
*/ ,b5vnW\  
public class ImprovedQuickSort implements SortUtil.Sort { IxG7eX!  
)/Gi-::  
private static int MAX_STACK_SIZE=4096; dc_2nF  
private static int THRESHOLD=10; P RNq8nmxC  
/* (non-Javadoc) )]LP8 J&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /{P-WRz>  
*/ keG\-f  
public void sort(int[] data) { yqtaQ0F~  
int[] stack=new int[MAX_STACK_SIZE]; gIIF17|Z  
7TU xdI  
int top=-1; 1 .[OS  
int pivot; 1*'gaa&y  
int pivotIndex,l,r; 9g'6zB  
US"UkY-\  
stack[++top]=0; BjfTt:kY  
stack[++top]=data.length-1; Ra6}<o  
rZ)7(0BBs  
while(top>0){ )D)4=LJ  
int j=stack[top--]; |/$954Hr#<  
int i=stack[top--]; RTDplv; ]  
"zzb`T[8  
pivotIndex=(i+j)/2; ~=t9-AF-  
pivot=data[pivotIndex]; pSEaE9AX%  
SSyARR+;c  
SortUtil.swap(data,pivotIndex,j); sTep2W.9  
;j[:tt\k  
file://partition 5R%y3::$S  
l=i-1;  =zDvZ(5  
r=j; ):nC%0V  
do{ Xy`'h5  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); R3LIN-g(  
SortUtil.swap(data,l,r); ZR"qrCSw`  
} fC[~X[H  
while(l SortUtil.swap(data,l,r); :7JP(j2  
SortUtil.swap(data,l,j); Z c#Jb  
!, rF(pz  
if((l-i)>THRESHOLD){ D~|q^Ms,%  
stack[++top]=i; fZLAZMrM  
stack[++top]=l-1; 8<32(D{  
} E1`_[=8a9  
if((j-l)>THRESHOLD){ +(z[8BJl  
stack[++top]=l+1; ,U+>Q!$`\^  
stack[++top]=j; ue4 {h  
} #?eMEws  
dWe%6s;   
} e p Dp*  
file://new InsertSort().sort(data); jxt]Z3a~0  
insertSort(data); #l.s> B4  
} )K`tnb.Pf  
/** 4x?I,cAN  
* @param data !R#PJH/TM  
*/ ,2i1 4H  
private void insertSort(int[] data) { kA)`i`gt  
int temp; }hcY5E-n  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `A-  
} U/_hH*N"!  
} L-%'jR  
} ( k_9<Yb3  
F^5\w-gLY  
} {]$)dz5  
:#D~j]pP  
归并排序: yq[@Cw  
DVDzYR**4  
package org.rut.util.algorithm.support; JEF;Q  
X8wtdd]64  
import org.rut.util.algorithm.SortUtil; ;s-@m<  
!7p&n3dz  
/** ? 51i0~O=  
* @author treeroot ncTMcu  
* @since 2006-2-2 Zay%QNsb  
* @version 1.0 Z;njSw%:  
*/ vin3 i&k  
public class MergeSort implements SortUtil.Sort{ %/qwqo`Q  
L\V`ou  
/* (non-Javadoc) '*Ld,`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?Cx=!k.  
*/ 2jxIr-a1G  
public void sort(int[] data) { /rky  
int[] temp=new int[data.length]; T6."j_  
mergeSort(data,temp,0,data.length-1); {WQ6=wGpS  
} O0 $V+fE  
Xz9[0;Q  
private void mergeSort(int[] data,int[] temp,int l,int r){ oxdX2"WwU  
int mid=(l+r)/2; _ {6l}  
if(l==r) return ; Z] x6np  
mergeSort(data,temp,l,mid); @4]{ZUV  
mergeSort(data,temp,mid+1,r);  +cKOIMu9  
for(int i=l;i<=r;i++){ %?Q&a ]  
temp=data; 4YR{ *  
} *LuR o  
int i1=l; 5:C>:pAV  
int i2=mid+1; +L@\/=;G  
for(int cur=l;cur<=r;cur++){ `r-3"or/$  
if(i1==mid+1) UtQCTNjC{  
data[cur]=temp[i2++]; ]Qa|9G,b  
else if(i2>r) ! h92dH  
data[cur]=temp[i1++]; o8v,17 8  
else if(temp[i1] data[cur]=temp[i1++]; lJdYR'/Wd  
else d={o|Mf  
data[cur]=temp[i2++]; 1 -C~C]&  
} "_&c[VptWi  
} 0s\ -iub=d  
ei{tW3 H$  
} j%Xa8$  
rs( e  
改进后的归并排序:  sFnR;  
hQlyqTP|2  
package org.rut.util.algorithm.support; i5&,Bpfo-  
_N)&<'lB<  
import org.rut.util.algorithm.SortUtil; EU04U  
_zi| GD  
/** @65xn)CD{  
* @author treeroot i]L=M 5^C  
* @since 2006-2-2 C"%B >e  
* @version 1.0 1 ltW9^cF}  
*/ 8n-Xt7z  
public class ImprovedMergeSort implements SortUtil.Sort { .N@+Ms3  
d3S Me  
private static final int THRESHOLD = 10; 72.Msnn  
U_ j[<.aN)  
/* |lg jI!iK  
* (non-Javadoc) oveK;\7/m  
* ~P"Agpx3u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nc\2A>f`  
*/ aM(#J7;  
public void sort(int[] data) { A~lc`m-  
int[] temp=new int[data.length]; 41s\^'^&  
mergeSort(data,temp,0,data.length-1); mfS}+_ C  
} YOj&1ymBZ  
}.Z `   
private void mergeSort(int[] data, int[] temp, int l, int r) { q\|RI;W  
int i, j, k; 0a^bAEP  
int mid = (l + r) / 2; *|<~IQg  
if (l == r) 1q3"qY H  
return; 6vR6=@(`>  
if ((mid - l) >= THRESHOLD) Xt$P!~Lu  
mergeSort(data, temp, l, mid); @"1Z;.S8V  
else x[Hx.G}5+  
insertSort(data, l, mid - l + 1); 0"T/a1S7bl  
if ((r - mid) > THRESHOLD) DR:DXJc  
mergeSort(data, temp, mid + 1, r); O9/)_:Wdh  
else QKB+mjMH#x  
insertSort(data, mid + 1, r - mid); V$O6m|q  
,aGIq. *v  
for (i = l; i <= mid; i++) { |+::sL\r  
temp = data; $I>]61l%  
} #+V4<o  
for (j = 1; j <= r - mid; j++) { i*m ;kWu,  
temp[r - j + 1] = data[j + mid]; ~:o$}`mW  
} OKK Ko`RN  
int a = temp[l]; n%#3xo a  
int b = temp[r]; C;K+ITlJ  
for (i = l, j = r, k = l; k <= r; k++) { ge.>#1f}  
if (a < b) { =~Qg(=U0U  
data[k] = temp[i++]; r|DIf28MIq  
a = temp; REE .8_  
} else { %.r \P@7/Q  
data[k] = temp[j--]; *($,ay$&H  
b = temp[j]; Xq03o#-p+  
} oy5K* }  
} ?kQY ^pU  
} ;-@: }/  
TK[[6IB  
/** @KU;' th  
* @param data !/u  
* @param l xH{-UQ3R  
* @param i 0F%8d@Y2  
*/ ^>Z_3 {s:$  
private void insertSort(int[] data, int start, int len) { ZvT,HJ0?  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ^uN[rHZ*u  
} ?O#,{ZZf=  
} 0#eb] c   
} #)xlBq4cZ  
} LO)!Fj4|  
SJa>!]U'xI  
堆排序: '@hUmrl  
`x#S. b  
package org.rut.util.algorithm.support; K-#d1+P+  
D:bmq93PC  
import org.rut.util.algorithm.SortUtil; !E?+1WDS0  
JfSe; v  
/** *8?2+ )5"  
* @author treeroot Uoe;=P@  
* @since 2006-2-2 rDbtT*vN  
* @version 1.0 oo &|(+"O_  
*/ >| ,`E  
public class HeapSort implements SortUtil.Sort{ WA43}CyAe  
{G x=QNd  
/* (non-Javadoc) {TpbUj0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y-nv#Ejr  
*/ saiXFM 7J  
public void sort(int[] data) { %\sE\]K  
MaxHeap h=new MaxHeap(); jIe /X]  
h.init(data); =dA] nM  
for(int i=0;i h.remove(); I@6+AU~,6  
System.arraycopy(h.queue,1,data,0,data.length); )G^k$j  
} JfWkg`LqL  
WVpx  
private static class MaxHeap{ '%ilF1#  
kOD=H-vSi  
void init(int[] data){ 7AT8QC`u  
this.queue=new int[data.length+1]; WXmfh  
for(int i=0;i queue[++size]=data; o [V8h @K)  
fixUp(size); :qbU@)p*  
} nfHjIYid  
} iv+a5   
):>?N`{V  
private int size=0; 3c6e$/  
Xzg >/w 8J  
private int[] queue; J+IItO4%  
!nkIXgWz  
public int get() { "%D"h  
return queue[1]; F}45.C rD  
} Fy<:iv0>t  
+%\Ci!%b  
public void remove() { l3F$5n  
SortUtil.swap(queue,1,size--); 5U7,,oyh  
fixDown(1); F<p`)?  
} `dV2\^*A  
file://fixdown |}:}14ty  
private void fixDown(int k) { fiWN^sTM  
int j; K\%\p$ZD  
while ((j = k << 1) <= size) { rrRv 7J&Q  
if (j < size %26amp;%26amp; queue[j] j++; _ncBq;j{  
if (queue[k]>queue[j]) file://不用交换 &v((tZ  
break; [q!]Ds" _  
SortUtil.swap(queue,j,k); iZfZF  
k = j; oH0g>E;  
} d)!'5Zr M  
} 1O0. CC,p  
private void fixUp(int k) { X:Wd%CHP  
while (k > 1) { lmHQ"z 3G  
int j = k >> 1; H ;=^ W  
if (queue[j]>queue[k]) 0;><@{'  
break; E`JW4)AH  
SortUtil.swap(queue,j,k); AA^K /y  
k = j; *s 4Ym  
} )cizd^{  
} 5`fUR/|[  
bR"4:b>K  
} - JEPh!oTt  
e< @$(w  
} 7Ji'7$  
U=KUx  
SortUtil: JjI1^FRd  
({Md({|  
package org.rut.util.algorithm; Axb=1_--  
Ix_w.f=8  
import org.rut.util.algorithm.support.BubbleSort; &aIFtlC  
import org.rut.util.algorithm.support.HeapSort; z{Yfiv\-r  
import org.rut.util.algorithm.support.ImprovedMergeSort; / S' +  
import org.rut.util.algorithm.support.ImprovedQuickSort; 7P3/Ky@6  
import org.rut.util.algorithm.support.InsertSort; >>J$`0kM*  
import org.rut.util.algorithm.support.MergeSort; jq]5Y^e  
import org.rut.util.algorithm.support.QuickSort; sS{Co8EJn  
import org.rut.util.algorithm.support.SelectionSort; B<BS^waU  
import org.rut.util.algorithm.support.ShellSort; d.w]\  
jG&HPVr  
/**  D~"a"  
* @author treeroot x[TLlV:{  
* @since 2006-2-2 30WOH 'n  
* @version 1.0 U 5j4iz'  
*/ EMe1!)  
public class SortUtil { y7h^_D+Ce  
public final static int INSERT = 1; /PSXuVtu5  
public final static int BUBBLE = 2; |)>+& xk  
public final static int SELECTION = 3; M .6BFC  
public final static int SHELL = 4; R%n*wGi_6b  
public final static int QUICK = 5; c0e[vrP:  
public final static int IMPROVED_QUICK = 6; ;|XX^  
public final static int MERGE = 7; I@VzH(da\  
public final static int IMPROVED_MERGE = 8; 2jhJXM=~  
public final static int HEAP = 9; b 4^O=  
4=^Ha%l  
public static void sort(int[] data) { Ms5qQ<0v_  
sort(data, IMPROVED_QUICK); -32P}58R  
} O{ 3X`xAf  
private static String[] name={ 4KxuSI^q  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" T.z efoZ  
}; dR=sdqS#J  
a.UYBRP/l  
private static Sort[] impl=new Sort[]{ o` QH8  
new InsertSort(), (FGy"o%TP'  
new BubbleSort(), &Hf%Va[B  
new SelectionSort(), .,'4&}N}  
new ShellSort(), /,~]1&?}1  
new QuickSort(), aUa+]H[  
new ImprovedQuickSort(), QPp31o.!5  
new MergeSort(), MaPhG<?  
new ImprovedMergeSort(), /YPG_,lRA  
new HeapSort() bYQ@!  
}; xv147"w'v  
,if~%'9j  
public static String toString(int algorithm){ OB=bRLd.IR  
return name[algorithm-1]; 0#Us *:[6  
} #+Bz$CO  
C[TjcHoA  
public static void sort(int[] data, int algorithm) {  \>"Zn7  
impl[algorithm-1].sort(data); CaED(0  
} 4@F8-V3q4  
:0%[u(  
public static interface Sort { qh}+b^Wi  
public void sort(int[] data); f$}g'r zl  
} mPPB"uQ  
3:$@DZT$  
public static void swap(int[] data, int i, int j) { m7A3i<6p  
int temp = data; vnbY^ASdw  
data = data[j]; &09~ D8f'  
data[j] = temp; O['[_1n_u]  
} G]xN#O;  
} cRag0.[  
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