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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。 Uus%1hC%a  
插入排序: hd0d gc  
S:aAR*<6  
package org.rut.util.algorithm.support; w\ 4;5.$  
NCR 4n_  
import org.rut.util.algorithm.SortUtil; !W4A 9Th  
/** O9?t,1  
* @author treeroot A/ZZ[B-  
* @since 2006-2-2 `K5Lp>=R  
* @version 1.0 a~ sU  
*/ iI\ bD  
public class InsertSort implements SortUtil.Sort{ pBl'SQccp  
awxzP*6  
/* (non-Javadoc) O< [h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K9O%SfshF  
*/ xVw9_il2a  
public void sort(int[] data) { 5#|D1A  
int temp; X$Eg(^La  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); cLhHGwX=x  
} q#s:2#=  
} %Z_/MNI  
} <q\OREMsq  
69/aP=  
} HEh,Cf7`'  
mUSrCU_}  
冒泡排序: k@:M#?(F  
#@%DY*w]v  
package org.rut.util.algorithm.support; F/O5Z?C?  
&BTgISYi  
import org.rut.util.algorithm.SortUtil; qV]p\/a.  
E0HXB1"  
/**  ja!K2^  
* @author treeroot oE/g) m%  
* @since 2006-2-2 ),cozN=NM  
* @version 1.0 @ByD=  
*/ v3\ |  
public class BubbleSort implements SortUtil.Sort{ B\^myg4  
)c*NS7D~f  
/* (non-Javadoc) T<XGG_NOl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8k[=$Ro  
*/ p6S{OUiG  
public void sort(int[] data) { y950Q%B]  
int temp; GO&~)Vh&7  
for(int i=0;i for(int j=data.length-1;j>i;j--){ b^s978qn#  
if(data[j] SortUtil.swap(data,j,j-1); >I*)0tE  
} @G'&7-(h*  
} nUb0R~wr$G  
} oW ! Z= ;  
} f wE b  
z3-A2#c  
} <e&88{jJ  
''D\E6c\  
选择排序: vtx3a^  
AUk-[i  
package org.rut.util.algorithm.support; \iL{q^Im  
py|ORVN(Z  
import org.rut.util.algorithm.SortUtil; z3Id8G&>  
@~p;.=1]F  
/** y-#{v.|L  
* @author treeroot S2+X/YeB  
* @since 2006-2-2 ke\gzP/  
* @version 1.0 n1XJ uc~  
*/ mH`K~8pRg  
public class SelectionSort implements SortUtil.Sort { l7T@<V  
5z/*/F=X  
/* ,i]X^z5!  
* (non-Javadoc) 4e`GMtp  
* V8KdY=[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xgp 6lO[  
*/ ~?6M4!u   
public void sort(int[] data) { ~W/|RP7S  
int temp; bv:M zYS  
for (int i = 0; i < data.length; i++) { LI~ofCp  
int lowIndex = i; P55QE+B  
for (int j = data.length - 1; j > i; j--) { [k~}Fe) x  
if (data[j] < data[lowIndex]) { +jD*Jtb<  
lowIndex = j; W _b!FQ]  
} )70i/%}7  
} reP)&Fo  
SortUtil.swap(data,i,lowIndex); pZxuV(QP`  
} bT>1S2s  
} ioW&0?,Ym  
Z:(Zy  
} ]&b>P ;j:  
u=QG%O#B  
Shell排序: 57|RE5]|!  
1ze\ U>  
package org.rut.util.algorithm.support; @LyCP4   
2/dvCt6 N  
import org.rut.util.algorithm.SortUtil; #jqcUno  
M7`iAa.}  
/** B0+r  
* @author treeroot `*Ju0)g1  
* @since 2006-2-2 1Zo"Xb  
* @version 1.0 8pXului  
*/ /LK,:6  
public class ShellSort implements SortUtil.Sort{ 2%Mgg,/~  
$-w&<U$E  
/* (non-Javadoc) [ !<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0Z4o3r[  
*/ w;p~|!  
public void sort(int[] data) { uN;]Fv@Z  
for(int i=data.length/2;i>2;i/=2){ Ss~yy0  
for(int j=0;j insertSort(data,j,i); k>.n[`>$6|  
} hU|TP3*  
} bC h  
insertSort(data,0,1); 'kb|!  
} -\|S=< g  
|Y tZOQu  
/** 3;%dn \ D  
* @param data 360b`zS  
* @param j ."u DM<  
* @param i ^'G,sZ6'Nh  
*/ Vi*HG &DD  
private void insertSort(int[] data, int start, int inc) { (3VV(18  
int temp; UJ?qGOM3x>  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); w,x'FZD  
} ISDeLUihY  
} +1pY^#A  
} 5H^"  
7=@3cw H  
} Ri<'apl  
h0z>dLA#2  
快速排序: JwNB)e D  
WV&grG|  
package org.rut.util.algorithm.support; y# iQ   
BM>'w,$KL  
import org.rut.util.algorithm.SortUtil; dWi:V 7t+  
$6DA<v^=z  
/** &YOks.k  
* @author treeroot 7#[8td  
* @since 2006-2-2 "CTK%be{q/  
* @version 1.0 ym*oCfu=  
*/ )|N_Q}  
public class QuickSort implements SortUtil.Sort{ V`& O`  
i"RBk%  
/* (non-Javadoc) e-EY]%JO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <|>7?#s2=  
*/ lF#p1H>\  
public void sort(int[] data) { W[SZZV_(tu  
quickSort(data,0,data.length-1); lL;SP&  
} J/xbMMb   
private void quickSort(int[] data,int i,int j){ 3/s" ;Kg,  
int pivotIndex=(i+j)/2; Oe)B.{;Ph  
file://swap \r`><d  
SortUtil.swap(data,pivotIndex,j); ;7*R;/  
G?dxLRy.do  
int k=partition(data,i-1,j,data[j]); #`o]{UfW  
SortUtil.swap(data,k,j); I3hN7  
if((k-i)>1) quickSort(data,i,k-1); cVf}8qf)  
if((j-k)>1) quickSort(data,k+1,j); |y$8!*S~(  
| k?r1dj%O  
} lO/?e!$  
/** ]t)#,'$^[W  
* @param data ,SG-{   
* @param i \'hZm%S  
* @param j   !XQq*  
* @return O.z\ VI2f  
*/ dxi5p!^^9  
private int partition(int[] data, int l, int r,int pivot) { $mu*iW\{  
do{ L_O*?aaZ  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); tDQuimYu7  
SortUtil.swap(data,l,r); ]9PQKC2&  
} Me2qOc^Z-  
while(l SortUtil.swap(data,l,r); VdOcKP.  
return l; ; S~  
} r WULv  
U#6<80Ke  
} [I 6&|Lz>  
}8eu 9~   
改进后的快速排序: {?RVw`g&f  
w#^z:7fI  
package org.rut.util.algorithm.support; !4mg]~G  
M37GQvo   
import org.rut.util.algorithm.SortUtil; Nv5)A=6#AA  
b]6@ O8  
/** (~N[j;W,_W  
* @author treeroot B1i&HoGbz  
* @since 2006-2-2 "?v{?,@  
* @version 1.0 bw8[L;~%_  
*/ 8;v/b3  
public class ImprovedQuickSort implements SortUtil.Sort { Wy.^1M/n>~  
@(W{_mw  
private static int MAX_STACK_SIZE=4096; ]$&N"&q  
private static int THRESHOLD=10; `M[o.t  
/* (non-Javadoc) y Q-{ CJ,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rsn^Y C  
*/ LTw.w:"J  
public void sort(int[] data) { d;hv_h  
int[] stack=new int[MAX_STACK_SIZE]; s2`Qh9R  
-*[:3%  
int top=-1; _lMSW6  
int pivot; i_f\dkol  
int pivotIndex,l,r; !hjA   
*;:dJXR  
stack[++top]=0; oM(8'{S=  
stack[++top]=data.length-1; l4$Iv:  
/i)>|U 4  
while(top>0){ @0 #JY:"  
int j=stack[top--]; CmxQb,Uls  
int i=stack[top--]; mX5%6{],  
;~-M$a }4  
pivotIndex=(i+j)/2; B+2E IaI  
pivot=data[pivotIndex]; Xe2Zf  
)skz_a}]8  
SortUtil.swap(data,pivotIndex,j); enT[#f[{  
b'%)?{E  
file://partition b?K`DUju{0  
l=i-1; KBa ]s q_  
r=j; F1u2SltR  
do{ '.{_ 7U  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); }fJLY\  
SortUtil.swap(data,l,r); #Q1}h  
} ):lH   
while(l SortUtil.swap(data,l,r); 26ae|2?  
SortUtil.swap(data,l,j); Z=dM7Lj*  
B}+li1k  
if((l-i)>THRESHOLD){ Qs,4PPEg  
stack[++top]=i; 1ne3CA=  
stack[++top]=l-1; TW6F9}'f&  
} +~$pkxD"  
if((j-l)>THRESHOLD){ G^V a$ike  
stack[++top]=l+1; %J L P=(  
stack[++top]=j; hsHbT^Qm  
} 8Dkq+H93  
,lcS J^yr  
} $38)_{  
file://new InsertSort().sort(data); N/78Ub  
insertSort(data); k~*%Z!V}C  
} .Ta(v3om%  
/** )&j@={0  
* @param data #%g>^i={ky  
*/ G%ZP `  
private void insertSort(int[] data) { G|YNShK4=9  
int temp; |:]} u|O  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); m5v IS  
} ;;|.qgxc~  
} 4L_)@n}  
} zbI|3  
)4TP{tp  
} E[cH/Rm  
u|cP&^S  
归并排序: Eh*(N(`  
jG{OLF6 !  
package org.rut.util.algorithm.support; > f'aW  
 ejc>  
import org.rut.util.algorithm.SortUtil; zGNmc7  
JwQ/A[b  
/** =~>g--^U  
* @author treeroot WbwwI)1  
* @since 2006-2-2 wC?$P  
* @version 1.0 /gn!="J  
*/ @b!W8c 6  
public class MergeSort implements SortUtil.Sort{ *-*SCA`E^=  
[RF6mWQ  
/* (non-Javadoc) ~@DdN5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !t+ 3DMPn  
*/ 4]#$YehM5  
public void sort(int[] data) { 7,zE?KG /  
int[] temp=new int[data.length]; t.#ara{  
mergeSort(data,temp,0,data.length-1); qOy0QZ#0  
} Z~].v._YV)  
pI_dV44W  
private void mergeSort(int[] data,int[] temp,int l,int r){ L{rd',  
int mid=(l+r)/2; W{c Z7$d  
if(l==r) return ; GVhy }0|  
mergeSort(data,temp,l,mid); k{H7+;_  
mergeSort(data,temp,mid+1,r); z'7XGO'Lo  
for(int i=l;i<=r;i++){ ~1{ppc+  
temp=data; p-r[M5;-^Q  
} MdN0 Y@Ll  
int i1=l; FGzKx9I9  
int i2=mid+1; 2;(+]Ad<  
for(int cur=l;cur<=r;cur++){ w+wtr[;wwL  
if(i1==mid+1) d<6m_! L  
data[cur]=temp[i2++]; CXi[$nF3  
else if(i2>r)  md,KRE  
data[cur]=temp[i1++]; A$i^/hJs  
else if(temp[i1] data[cur]=temp[i1++]; q[GD K^-g  
else lQd7p+ 21  
data[cur]=temp[i2++]; T.jCF~%7F  
} d8iq9AP\o  
} 6bPl(.(3  
0U~*uDU  
} Mi;Pv*  
o{hX?,4i  
改进后的归并排序: B$n1 k 45  
SgYMPBh  
package org.rut.util.algorithm.support; }'*6 A  
ujzfy  
import org.rut.util.algorithm.SortUtil; :yRv:`r3Lt  
yO}5.  
/** lu8*+.V  
* @author treeroot 3=yfbO<-  
* @since 2006-2-2 ITg<u?z_  
* @version 1.0 ~GcWG4  
*/ ?(n v_O  
public class ImprovedMergeSort implements SortUtil.Sort { Xdw pn+7s  
,ga6   
private static final int THRESHOLD = 10; )_1 GPS  
2WTOu x*  
/* s_a jA  
* (non-Javadoc) \EsT1aT  
* ~>HzAo9e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6oKdw|(Q#  
*/ 'u E;8.,  
public void sort(int[] data) { .T)wG;+  
int[] temp=new int[data.length]; TkJ[N4'0  
mergeSort(data,temp,0,data.length-1); #f< v%  
} aHVzBcCPh  
>,E^ R`y  
private void mergeSort(int[] data, int[] temp, int l, int r) { Nk<^ Qv  
int i, j, k; 4"_`Mu_%  
int mid = (l + r) / 2; aZ+><1TD  
if (l == r) 9?8PMh.  
return; b+|3nc!  
if ((mid - l) >= THRESHOLD) 2:_6nWl  
mergeSort(data, temp, l, mid); =#v? }JG  
else *yaS^k\  
insertSort(data, l, mid - l + 1); 0y6M;"&~E  
if ((r - mid) > THRESHOLD) &!OEd ]  
mergeSort(data, temp, mid + 1, r); dFF=-_O>  
else ,2^4"gIl  
insertSort(data, mid + 1, r - mid); &w#!   
c!_c, vwrn  
for (i = l; i <= mid; i++) {  ?C#E_  
temp = data; ~MBPN 4r  
} b>Y{,`E3  
for (j = 1; j <= r - mid; j++) { R(`:~@ 3\6  
temp[r - j + 1] = data[j + mid]; !?(7g2NP)  
} tAF?. \x"g  
int a = temp[l]; #{PwEX !Ct  
int b = temp[r]; ,zltNbu\.(  
for (i = l, j = r, k = l; k <= r; k++) { ! 5NuFLOf  
if (a < b) { 8AX_y3$  
data[k] = temp[i++]; <^'{=A>  
a = temp; o6d x\  
} else { t* =[RS*  
data[k] = temp[j--]; ATl?./Tu  
b = temp[j]; _$ivN!k  
} xH xTL>,?  
} ~Ix2O   
} 'gvR?[!t  
X!p`|i  
/** G$>QH-p  
* @param data XTo7fbW*  
* @param l |Ha#2pt{bc  
* @param i USEb} M`  
*/ j/z=<jA  
private void insertSort(int[] data, int start, int len) { >m>F {v  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 68Gywk3]=u  
} _ i}W1i  
} l2qvYNMw  
} N,c!1: b  
} D2?H"PH  
)63 $,y-;$  
堆排序: dPwyiV0  
L%T(H<G  
package org.rut.util.algorithm.support; {d'-1z"q  
pA ~} _  
import org.rut.util.algorithm.SortUtil; lPZ(c%P  
4|=>gdW)KN  
/** U X@%1W!8  
* @author treeroot Lwr's'ao.  
* @since 2006-2-2 ~v+kO~  
* @version 1.0  u]P|  
*/ Uj):}xgi'  
public class HeapSort implements SortUtil.Sort{ `m7<_#Y  
"`$,qvNN  
/* (non-Javadoc) mb1mlsE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D%p*G5Bg3  
*/ C9!t&<\ }  
public void sort(int[] data) {  bDkZU  
MaxHeap h=new MaxHeap(); iT>u&0B-  
h.init(data); Aqmpo3P[+  
for(int i=0;i h.remove(); h Ma;\k  
System.arraycopy(h.queue,1,data,0,data.length);  Y~WdN<g  
} %_ibe  
jYHnJ}<  
private static class MaxHeap{ *nCA6i  
QB*,+u4  
void init(int[] data){ H<(F$7Q!\  
this.queue=new int[data.length+1]; 68Fl/   
for(int i=0;i queue[++size]=data; j uA@"SG  
fixUp(size); \c< oVF'  
} fF(2bVKP:  
} ; oyV8P$  
eDJnzh83  
private int size=0; eV[{c %wN:  
"mK`3</G  
private int[] queue; N1a]y/  
gV2vwe  
public int get() { c*;oR$VW  
return queue[1]; m,k 0 h%  
} D&G6^ME  
 E^1yU  
public void remove() {  }QFL  
SortUtil.swap(queue,1,size--); YThVG0I =  
fixDown(1); W,xdj!^t  
} sbW+vc  
file://fixdown !8H0.u rw  
private void fixDown(int k) { 1dQAo1  
int j; r&{8/ 5 "  
while ((j = k << 1) <= size) { nTeA=0 4  
if (j < size %26amp;%26amp; queue[j] j++; @d WA1tM  
if (queue[k]>queue[j]) file://不用交换 l<v{8:,e#  
break; JQV%W +-@  
SortUtil.swap(queue,j,k); \'m7un  
k = j; iWs6 !s!  
} ;6G]~}>o  
} O[ma% E*0  
private void fixUp(int k) { v$y\X3)mB  
while (k > 1) { kE&R;T`Gb%  
int j = k >> 1; ZISIW!  
if (queue[j]>queue[k]) uY]';Ot G  
break; 7=P)`@  
SortUtil.swap(queue,j,k); 9q`Ewj R  
k = j; [vi =^  
} '12m4quO  
} qs]W2{-4~  
y\FQt];z)  
} :'[?/<iTg  
,U{dqw8E{  
} +^AdD8U  
opfnIkCe  
SortUtil: /TMVPnvz.  
'V&g"Pb  
package org.rut.util.algorithm; q[U pP`Z%  
vMzL+D2)  
import org.rut.util.algorithm.support.BubbleSort; )G2Bx+Z;L  
import org.rut.util.algorithm.support.HeapSort; $DDO9  
import org.rut.util.algorithm.support.ImprovedMergeSort; 8-;.Ejz!\A  
import org.rut.util.algorithm.support.ImprovedQuickSort; ,RPb <3 B  
import org.rut.util.algorithm.support.InsertSort; f#s6 'g  
import org.rut.util.algorithm.support.MergeSort; rEa(1(I  
import org.rut.util.algorithm.support.QuickSort; QbJ7$ ,4  
import org.rut.util.algorithm.support.SelectionSort; f7&ni#^Ztj  
import org.rut.util.algorithm.support.ShellSort; GgpE"M?  
fzJiW@-T  
/** @/#G2<Vp1  
* @author treeroot awzlLI<2p  
* @since 2006-2-2 *d8 %FQ  
* @version 1.0 C. .|O  
*/ ozOc6  
public class SortUtil { `{#""I^_  
public final static int INSERT = 1; CEj_{uf|  
public final static int BUBBLE = 2; Te+#  
public final static int SELECTION = 3; K3zY-yIco  
public final static int SHELL = 4; a!o%x  
public final static int QUICK = 5; \n}%RD-Ce  
public final static int IMPROVED_QUICK = 6; ,LBj$U]e|E  
public final static int MERGE = 7; 9O- otAGM  
public final static int IMPROVED_MERGE = 8; 8$uq60JK  
public final static int HEAP = 9; C^$E#|E9N  
)v(rEY  
public static void sort(int[] data) { "-:H$  
sort(data, IMPROVED_QUICK); ,zjz "7'  
} Y~Uf2(7b5  
private static String[] name={ / B!j`UK  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" \4 b^*`d  
}; 9"[,9HN  
PS~_a  
private static Sort[] impl=new Sort[]{ YMo8C(  
new InsertSort(), `@y~JNf!  
new BubbleSort(), Ktk?(49  
new SelectionSort(), gPn0-)<  
new ShellSort(), +=W(c8~P  
new QuickSort(), BiU>h.4=\(  
new ImprovedQuickSort(), _#~D{91 j:  
new MergeSort(), H7uh"/A  
new ImprovedMergeSort(), l9QIlTc7  
new HeapSort() OsOfo({I_  
}; +wj}x?ZeV  
fhg'4FO  
public static String toString(int algorithm){ B/16EuH#  
return name[algorithm-1]; EwBrOq`C  
} F*G]Na@6D  
m2m ;|rr  
public static void sort(int[] data, int algorithm) { RSAGSGp  
impl[algorithm-1].sort(data); b\\l EM>o1  
} /\,3AInLb  
7jw+o*;  
public static interface Sort { uBG!R#T  
public void sort(int[] data); mBL?2~M  
} g8/ ,E-u  
}>iNT.Lvd  
public static void swap(int[] data, int i, int j) { e=##X}4zZ  
int temp = data; iklZ[G%A0  
data = data[j]; q"269W:  
data[j] = temp; |zRrGQY m  
} BuvnY  
} ~"*W;|)  
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