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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。 {Y1&GO;  
插入排序: Zy=DY  
6!Uk c'r  
package org.rut.util.algorithm.support; r:--DKt  
$/"QYSF  
import org.rut.util.algorithm.SortUtil; tOxTiaa=  
/** ("P]bU+'>  
* @author treeroot 2U& +K2  
* @since 2006-2-2 *QA{xvT  
* @version 1.0 9\!=i  
*/ \JDxN  
public class InsertSort implements SortUtil.Sort{ 46gDoSS  
x{9$4d  
/* (non-Javadoc) EL(B XJrx{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l`r O)7  
*/ 9v?rNJs  
public void sort(int[] data) { V<Co!2S  
int temp; hp$1c  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); OXS.CFZM  
} ?\_vqW  
} lY[\eQ 1:  
} Qb8Z+7  
o]@'R<F(u  
} ?G 'sb}.  
L b-xc]  
冒泡排序: 5V8`-yO9  
S~U5xM^s  
package org.rut.util.algorithm.support; OlX#1W]  
-%TwtO<$']  
import org.rut.util.algorithm.SortUtil; -q&7q  
X/FRe[R  
/** V(;c#%I2  
* @author treeroot DWupLJpk;c  
* @since 2006-2-2 +do* C =z  
* @version 1.0  GjyTM  
*/ z[l_<`J$9  
public class BubbleSort implements SortUtil.Sort{ ^f9>tI{  
`$XgfMBf |  
/* (non-Javadoc) {m/KD 'b_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ce7 $# #f  
*/ XwDt8TxL  
public void sort(int[] data) { 8 @r>`c  
int temp; !im%t9  
for(int i=0;i for(int j=data.length-1;j>i;j--){ y(X^wC  
if(data[j] SortUtil.swap(data,j,j-1); ?d_vD@+\  
} q@i.4>x  
} s:ojlmPb  
} YM#J_sy@J.  
} ';LsEI[  
<K <|G  
} <SiJA`(7  
&Z%'xAOGR  
选择排序: *1h@Jb34  
'j;i4ie>*x  
package org.rut.util.algorithm.support; \_MWZRMc5  
n^` `)"  
import org.rut.util.algorithm.SortUtil; #rQT)n  
\jr-^n]  
/** T;v^BVn  
* @author treeroot MbeK{8~E%l  
* @since 2006-2-2 &?# YjU"  
* @version 1.0 #>2cfZ`6'J  
*/ JPpNCC.b  
public class SelectionSort implements SortUtil.Sort { l $0w 9Z^  
_ME?o  
/* s8SCEpz  
* (non-Javadoc) <7o@7r'0  
* WS"v"J%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,{d=<j_  
*/ ?ZYj5[op,H  
public void sort(int[] data) { Ict+|<f  
int temp; `HILsU=|  
for (int i = 0; i < data.length; i++) { oI"gQFGu`u  
int lowIndex = i; G Q}Rxu]  
for (int j = data.length - 1; j > i; j--) { j]m|}n  
if (data[j] < data[lowIndex]) { m5 l&  
lowIndex = j; 3v3`d+;&  
} S2?)Sb`  
} ]W7&ZpF  
SortUtil.swap(data,i,lowIndex); Si68_]:^  
} n/^QPR$>.  
} (I;lE*>  
A_+*b [P  
} M7ug < 8i  
[ZD`t,x(  
Shell排序: 6>b'g ~I  
uzL|yxt  
package org.rut.util.algorithm.support; G$s=P  
g_?bWm4br  
import org.rut.util.algorithm.SortUtil; ,irc=0M(  
lM.k *`$  
/** Kir|in)r0  
* @author treeroot `[~LMV&2U  
* @since 2006-2-2 sI@kS ^  
* @version 1.0 OT#foP   
*/ mV}eMw  
public class ShellSort implements SortUtil.Sort{ L08" 8\  
1pT/`x  
/* (non-Javadoc) 5;A=8bryU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;0}C2Cz'  
*/ 2ZKy7p0/  
public void sort(int[] data) { :-~x~ah-  
for(int i=data.length/2;i>2;i/=2){ 4Yd$RP  
for(int j=0;j insertSort(data,j,i); |UN#utw{^Y  
} A/.z. K  
} CFeAKjG  
insertSort(data,0,1); soqnr" 1  
} i~tps  
2G$-:4B  
/** j2jUrl  
* @param data c}w[ T  
* @param j \$ :)Ka  
* @param i BXr._y, cr  
*/ \8`^QgV`@  
private void insertSort(int[] data, int start, int inc) { -;$jo-  
int temp; q[+V6n `Z5  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); $'bb)@_  
} to)Pl}9QkK  
} qGgdWDn`  
} 8TO5j  
!&o>zU.  
} P> ~Lx  
; .hTfxE0  
快速排序: E /V`NqC  
sE0,b  
package org.rut.util.algorithm.support; O9Yk5b;  
L'a>D  
import org.rut.util.algorithm.SortUtil; E9j(%kQ2  
j{P3o<l&`  
/** g= s2t"&  
* @author treeroot X($@E!|  
* @since 2006-2-2 LdyE*u_  
* @version 1.0 =[o/D0-Kn  
*/ OoR0>!x Z  
public class QuickSort implements SortUtil.Sort{ T4}q%%7l  
k)JwCt.%  
/* (non-Javadoc) UbSD?Ew@35  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y'o.`':\~  
*/ iD2>-yf  
public void sort(int[] data) { hj[sxC>z5  
quickSort(data,0,data.length-1); 6dYUMqQ  
} @m"P_1`*  
private void quickSort(int[] data,int i,int j){ r5&?-G  
int pivotIndex=(i+j)/2; J+*n}He,  
file://swap Fi"TY^-E;  
SortUtil.swap(data,pivotIndex,j); VB{G% !}  
 Fr9_!f  
int k=partition(data,i-1,j,data[j]); =eG:Scoug?  
SortUtil.swap(data,k,j); el,n5O Z7  
if((k-i)>1) quickSort(data,i,k-1); [ ]=}0l<J  
if((j-k)>1) quickSort(data,k+1,j); U &y?3  
8wA'a'V.  
} fh e%5#3  
/** 2graLJ?9Z  
* @param data ">S.~'ds  
* @param i +6 x:+9S  
* @param j ^os|yRzV*M  
* @return If(IG]>`D  
*/ +IfU 5&5<  
private int partition(int[] data, int l, int r,int pivot) { i- r y5x  
do{ jVdB- y/r  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); u1 (8a%ZC  
SortUtil.swap(data,l,r); BmFs6{>~c  
} n\H.NL)  
while(l SortUtil.swap(data,l,r); 7 *HBb-  
return l; D i #Em[  
} wGnFDkCNz  
u/L\e.4  
} )UG<KcdI  
MIwkFI8  
改进后的快速排序: !u|s| 6{\  
Sc&p*G  
package org.rut.util.algorithm.support; `<d{(9:+  
6w^Fee`>]  
import org.rut.util.algorithm.SortUtil; <4P"1#nHQ+  
u\|Ys  
/** 0"$'1g^]7  
* @author treeroot /<oBgFMoJ  
* @since 2006-2-2 G7H'OB &  
* @version 1.0 rfxLCiV  
*/ )wz3 m L  
public class ImprovedQuickSort implements SortUtil.Sort { )F4P-u  
STgYXA(  
private static int MAX_STACK_SIZE=4096; QsH Fk5)  
private static int THRESHOLD=10; JD$;6Jv3P  
/* (non-Javadoc) W=T,hOyh<W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f}F   
*/ viR-h iD  
public void sort(int[] data) { v"G)G)*z  
int[] stack=new int[MAX_STACK_SIZE]; Tof H =d  
j4.deQ,  
int top=-1; 4';(\42  
int pivot; C8.MoFfhe  
int pivotIndex,l,r; NKb,>TO  
Qz/1^xy  
stack[++top]=0; ' fP`ET5  
stack[++top]=data.length-1; 0CRk&_ht  
~b.e9FhdA  
while(top>0){ S4BU!  
int j=stack[top--]; w@ =Uf7  
int i=stack[top--]; Og~3eL[1%C  
T)PH8 "  
pivotIndex=(i+j)/2; t@\op}Z-M  
pivot=data[pivotIndex]; 6H}8^'/u  
Qape DU;  
SortUtil.swap(data,pivotIndex,j); U49 `!~b7  
+cnBEv~y  
file://partition RP4P"m(   
l=i-1; I<ta2<h  
r=j; A VbGJ+  
do{ ygquQhf5  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); h*\/{$y  
SortUtil.swap(data,l,r); eC41PQ3=1'  
} +=A53V[C  
while(l SortUtil.swap(data,l,r); EAM2t|M G.  
SortUtil.swap(data,l,j); YX:[],FP  
Kwa$5qZI  
if((l-i)>THRESHOLD){ -Lbi eS%  
stack[++top]=i; "FT(U{^7d  
stack[++top]=l-1; Z6xM(*vg  
} APBe 76'3)  
if((j-l)>THRESHOLD){ 2k$~Mv@L  
stack[++top]=l+1; Qcf5* ]V  
stack[++top]=j; )j>BvO  
} <i!7f26r  
CA{(x(W\:  
} COf>H0^%Q  
file://new InsertSort().sort(data); .IJgkP)!]  
insertSort(data); ESAFsJ$r;  
} [Vaw$c-+[y  
/** 6:vdo~  
* @param data Xm! ;  
*/ WMLsKoby  
private void insertSort(int[] data) { xK3}z N$T  
int temp; 2{E"#}/  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z(&~O;;N#  
} I,xV&j+<  
} 2E":6:Wsw  
} m@){@i2.  
<ny)yK  
} eDPmUlC+-  
Gv3AJ'NL  
归并排序: +kK6G#c  
A(Ss:7({  
package org.rut.util.algorithm.support; _7LZ\V+MLW  
1Xi.OGl  
import org.rut.util.algorithm.SortUtil; zn@yt%PCV  
+ (|6Wv  
/** JxM[LvVi  
* @author treeroot cc^[ u+  
* @since 2006-2-2 y=)xo7 (  
* @version 1.0 NJ{M-K%>  
*/ b];p/V# <  
public class MergeSort implements SortUtil.Sort{ $M=W`E[g  
{)8!>K%G  
/* (non-Javadoc) ]FLi^}ct  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CUR70[pB)  
*/ {b6$F[e   
public void sort(int[] data) { ^1^mu c[  
int[] temp=new int[data.length]; T1Q c?5K^  
mergeSort(data,temp,0,data.length-1); Tn7(A^h'  
} UoiXIf_Q  
8#MiM . f  
private void mergeSort(int[] data,int[] temp,int l,int r){ i #%17}  
int mid=(l+r)/2; aA-gl9  
if(l==r) return ; Uj[E_4h  
mergeSort(data,temp,l,mid); |Vs?yW  
mergeSort(data,temp,mid+1,r); <8Zm}-U  
for(int i=l;i<=r;i++){ i!JVGs  
temp=data; CF:s@Z+  
} |4@su"OA  
int i1=l; c)tG1|Og]  
int i2=mid+1; voHFU#Z$  
for(int cur=l;cur<=r;cur++){ WTcrfs)T  
if(i1==mid+1) hvS4"% \  
data[cur]=temp[i2++]; f2y:K6$'l*  
else if(i2>r) xC,;IS k,  
data[cur]=temp[i1++]; d;$<K  
else if(temp[i1] data[cur]=temp[i1++]; 9a*}&fL[  
else TEK]$%2  
data[cur]=temp[i2++]; dlx "L%  
} UpU2H4  
} R}-<ZJe  
+W6QtB6  
} 0Lo)Ni^"  
;x=k J@  
改进后的归并排序: TvzqJ=  
1eZ759PoO  
package org.rut.util.algorithm.support; VHlN;6Qlff  
-W:te7  
import org.rut.util.algorithm.SortUtil; n!B*n(;!u  
cN5,\I.  
/** 9y~5@/3 2R  
* @author treeroot nKzS2 u=:Y  
* @since 2006-2-2 @,Iyn<v{B  
* @version 1.0 `bJ+r)+5  
*/ & bwhD.:=  
public class ImprovedMergeSort implements SortUtil.Sort { ; SS/bS|  
#0WGSIht<  
private static final int THRESHOLD = 10; Jmp%%^  
/*+P}__k  
/* {Di()]/  
* (non-Javadoc) : ;nvqbd  
* H7 xyK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $#k8xb  
*/ ]d}U68$T+  
public void sort(int[] data) { %`cP|k  
int[] temp=new int[data.length]; B3lP#ckh  
mergeSort(data,temp,0,data.length-1); m;S!E-W  
} avb'J^}f  
OUd&fUmH  
private void mergeSort(int[] data, int[] temp, int l, int r) { ?4kM5NtP  
int i, j, k; l1&NU'WW  
int mid = (l + r) / 2; ;w/|5 ;{A;  
if (l == r) NT^m.o~4  
return; LB1AjNJ  
if ((mid - l) >= THRESHOLD) YQ&Ww|xe  
mergeSort(data, temp, l, mid); ya<nD'%9  
else z)RJUmY3B  
insertSort(data, l, mid - l + 1); JFyw,p&xB  
if ((r - mid) > THRESHOLD) {*Ag[HS0u  
mergeSort(data, temp, mid + 1, r); VuOZZ7y  
else CBqeO@M  
insertSort(data, mid + 1, r - mid); _%xe:X+ M  
^4WNP  
for (i = l; i <= mid; i++) { {!lC$SlJ  
temp = data; zJH#J=O  
} B~[QmK  
for (j = 1; j <= r - mid; j++) { ]Cfjs33H  
temp[r - j + 1] = data[j + mid]; O M]d}}=Y  
} s7A3CY]->  
int a = temp[l]; <Be:fnPX7  
int b = temp[r]; (V:z7  
for (i = l, j = r, k = l; k <= r; k++) {  =V- ^  
if (a < b) { < )dqv0=  
data[k] = temp[i++]; J-6l<%962%  
a = temp; *?2aIz"  
} else { 'S_OOzpC  
data[k] = temp[j--]; ps DY}y\"  
b = temp[j]; 8QYP\7}o  
} 3y[6n$U&  
} S~~G0GiW  
} "~1{|lj|)  
Y ,Iv<Hg  
/** \F$Vm'f_  
* @param data [9wuaw"~[Z  
* @param l B<99-7x3  
* @param i kq{PM-]l  
*/ ")'9:c  
private void insertSort(int[] data, int start, int len) { X=8CZq4  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); !CBvFl/v  
} D%=VhKq  
} B_gzpS]  
} kqebU!0-  
} lUL6L 4m  
m W/6FC  
堆排序: [MQU~+]  
<}\!FuC  
package org.rut.util.algorithm.support; V<:)bG4;d  
F9Hxqa#1T  
import org.rut.util.algorithm.SortUtil; St1Ny,$yU  
V0rS^SAF  
/** SBf8Ipe  
* @author treeroot 9!``~]G2  
* @since 2006-2-2 _~l*p"PL<  
* @version 1.0 n=z=%T6  
*/ Ft<6`C  
public class HeapSort implements SortUtil.Sort{ %4=r .9  
U<YP@?w  
/* (non-Javadoc) \aEarIX#*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n A<#A  
*/ F}f/cG<X  
public void sort(int[] data) { c'wxCqnE   
MaxHeap h=new MaxHeap(); Y<]A 5cm  
h.init(data); w$aiVOjgT  
for(int i=0;i h.remove(); 8h.Dc&V  
System.arraycopy(h.queue,1,data,0,data.length); ^$N}[1   
} U,tl)(!@Q-  
W Ai91K@  
private static class MaxHeap{ d)R7#HLZ7  
CeZ+!-lG  
void init(int[] data){ /8Sr(  
this.queue=new int[data.length+1]; G1=/G  
for(int i=0;i queue[++size]=data; u l-A'  
fixUp(size); |7pi9  
} w1Xe9'$Qb  
} wNfWHaH" m  
+ a,x  
private int size=0; }akF=/M  
aqw;T\GI+~  
private int[] queue;  )S8fFV  
F> H5 ww9E  
public int get() { 9'My /A0  
return queue[1]; g'%^-S ]  
} RT`jWWh*Lo  
DjMhI_Yu  
public void remove() { ]c+HD*  
SortUtil.swap(queue,1,size--); z#( `H6n:  
fixDown(1); J)o =0i>*  
} <`f~Z|/-_(  
file://fixdown f\|R<3 L  
private void fixDown(int k) { F?!X<N{  
int j; 1.U9EuI  
while ((j = k << 1) <= size) { J"$Y`;  
if (j < size %26amp;%26amp; queue[j] j++; x1O]@Z{d\  
if (queue[k]>queue[j]) file://不用交换 M[= #%U3*N  
break; !eC]=PoY  
SortUtil.swap(queue,j,k); +kj d;u#  
k = j; ?a]1$>r  
} OgOs9=cE{  
} k-;A9!^h  
private void fixUp(int k) { f]*TIYicc  
while (k > 1) { eyIbjgpV  
int j = k >> 1; PCcI(b>?l  
if (queue[j]>queue[k]) Lj,!0 25  
break;  |4_[wX r  
SortUtil.swap(queue,j,k); h{Zd, 9H  
k = j; ssx #\  
} 0sR+@\  
} |EjMpRNE  
ar%!h~  
} 2," (  
p%]ZG,  
} Jg2*$gL;_  
m~<<ok_  
SortUtil: UWPzRk#s"  
l2S1?*  
package org.rut.util.algorithm; 3c|u2Pl  
m35$4  
import org.rut.util.algorithm.support.BubbleSort; Q2 S!}A  
import org.rut.util.algorithm.support.HeapSort; ? kBX:(g  
import org.rut.util.algorithm.support.ImprovedMergeSort; B=;p wX  
import org.rut.util.algorithm.support.ImprovedQuickSort; 7xlarns   
import org.rut.util.algorithm.support.InsertSort; +FGw)>g8'm  
import org.rut.util.algorithm.support.MergeSort; 5/f"dX  
import org.rut.util.algorithm.support.QuickSort; gNj~o^6|@  
import org.rut.util.algorithm.support.SelectionSort; <`P7^ 'z!  
import org.rut.util.algorithm.support.ShellSort; 1oSU>I_i  
VS\+"TPuH  
/** l.Yq4qW  
* @author treeroot C"[d bh!  
* @since 2006-2-2 Es^=&2 ''  
* @version 1.0 Q\qI+F2?  
*/ {*NM~yQ  
public class SortUtil { upc-Qvk  
public final static int INSERT = 1; #FwTV@  
public final static int BUBBLE = 2; Lt?k$U{qe)  
public final static int SELECTION = 3; $psPNJG  
public final static int SHELL = 4; [a2Q ^ab  
public final static int QUICK = 5; r1R\cor  
public final static int IMPROVED_QUICK = 6; #sJL"GB  
public final static int MERGE = 7; l(j._j~p  
public final static int IMPROVED_MERGE = 8; c_Fz?R+f?K  
public final static int HEAP = 9; 'X(Sn3  
)N}.n2Y8W  
public static void sort(int[] data) { enB 2-)< K  
sort(data, IMPROVED_QUICK); 0V!@*Z  
} 1m\ihU  
private static String[] name={ L_(Y[!  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" /@xL {  
}; .{t]Mc  
'1NZSiv+C?  
private static Sort[] impl=new Sort[]{ {@*l,[,5-  
new InsertSort(), tg#d.(  
new BubbleSort(), Y3M"a8e'  
new SelectionSort(), 8v12<ktR`  
new ShellSort(), $?M$^- (e  
new QuickSort(), *3s,~<''%  
new ImprovedQuickSort(), #P/}'rdt  
new MergeSort(), qQ^ bUpk0  
new ImprovedMergeSort(), FS^ie|8{D-  
new HeapSort() )>+J`NFa  
}; _Y 8RP%  
{u@w^ hZ$  
public static String toString(int algorithm){ O[|prk,  
return name[algorithm-1]; j#D( </T  
} .'Rz tBv  
v_L?n7c  
public static void sort(int[] data, int algorithm) { 'ngx\Lr  
impl[algorithm-1].sort(data); 7a5G,C#QQ  
} U!D\Vd  
!`qw" i  
public static interface Sort { >@+ r|  
public void sort(int[] data); {+  @M!  
} I>n2# -8  
D]B;5f  
public static void swap(int[] data, int i, int j) { a&)4Dv0  
int temp = data; -l i71.M  
data = data[j]; j"wbq-n,7  
data[j] = temp; 5lYzgt-oP  
} I?#B_R#  
} F2WMts  
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