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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。 BN~gk~t_  
插入排序: E*Z# fa  
@}<b42  
package org.rut.util.algorithm.support; iD${7 _  
X{u\|e{  
import org.rut.util.algorithm.SortUtil; -z~;f<+I`  
/** fEB&)mM  
* @author treeroot "g%=FH3e  
* @since 2006-2-2 ED;rp 9(  
* @version 1.0 YApm)O={  
*/ 69? wZfj'  
public class InsertSort implements SortUtil.Sort{ I^l\<1"]  
9 S4bg7  
/* (non-Javadoc) ^2a63_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2X,`t%o  
*/ KNG7$icG  
public void sort(int[] data) { NVX@1}  
int temp; 'JRYf;9c  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >X_5o^s2s  
} =#>F' A  
} }{S+C[:_  
} h0aK}`/a  
p9-s'F|@i  
} rQsYt/  
eUVhNg  
冒泡排序: o JX4+uJ  
UGP,/[XI  
package org.rut.util.algorithm.support; aCF=Og  
g2%fla7r  
import org.rut.util.algorithm.SortUtil; wZ%a:Z4TcM  
#oD;?Mi  
/** $4:Se#nl  
* @author treeroot He)!Ez\X  
* @since 2006-2-2 _Q9I W  
* @version 1.0 Yv/T6z@  
*/ .z, ot|  
public class BubbleSort implements SortUtil.Sort{ {fI"p;|  
H(gETRh  
/* (non-Javadoc)  ae>B0#=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `LOW)|6r`  
*/ sXwa`_{  
public void sort(int[] data) { F #)@ c  
int temp; E<[ Y KY  
for(int i=0;i for(int j=data.length-1;j>i;j--){ fZavZ\qU  
if(data[j] SortUtil.swap(data,j,j-1); Q;?rqi ,  
} Ih<.2  
} _$P1N^}Zs  
} 0^83:C ^{  
} \h@3dJ4  
rK[;wD<  
} t Uk)S  
b!JrdJO,DP  
选择排序: 'Bwv-J  
x K ;#C  
package org.rut.util.algorithm.support; mu{\_JX.A  
[tk6Kx8a  
import org.rut.util.algorithm.SortUtil; M.9w_bW]#D  
cBtQ2,<6  
/** uI\6":/u  
* @author treeroot WXQ+`OH7  
* @since 2006-2-2 %+iAL<S  
* @version 1.0 kfgkZ"9  
*/ {u[_^  
public class SelectionSort implements SortUtil.Sort { PJL [En*  
7d^ ~.F  
/* uK=)65]  
* (non-Javadoc) s8  5l  
* lx<!*2 -^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Om(Ir&0  
*/ J,*+Ak ~  
public void sort(int[] data) { hr W2#v  
int temp; 8 .t3`FGH  
for (int i = 0; i < data.length; i++) { $kBcnk  
int lowIndex = i; <~zPt&C]V  
for (int j = data.length - 1; j > i; j--) { :n,x?bM  
if (data[j] < data[lowIndex]) { ?|Ey WAL  
lowIndex = j; wpg7xx!  
} #A&49a3^1  
} ldnKV&N  
SortUtil.swap(data,i,lowIndex); f0{j/+F_o  
} xri(j,mU  
} k\X yR4r  
8RT<?I^5  
} Gdz*   
)|6OPR@(#/  
Shell排序: H.< F6  
@RHG@{x{K  
package org.rut.util.algorithm.support; ~3)d?{5  
`R*SHy! _  
import org.rut.util.algorithm.SortUtil; "fC>]iA8I  
i`5Skr:M  
/** &Qmb?{S0  
* @author treeroot $IqubC>O  
* @since 2006-2-2 u\(>a  
* @version 1.0 ]Pe8G(E!  
*/ W~FU!C?]  
public class ShellSort implements SortUtil.Sort{ *|ef#-|D  
T037|k a{  
/* (non-Javadoc) ioUO 0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8@/MrEOW#  
*/ FXul u6"SX  
public void sort(int[] data) { gwbV$[.X  
for(int i=data.length/2;i>2;i/=2){ B'I_i$g4w  
for(int j=0;j insertSort(data,j,i);  (duR1Dz  
} -<:w{cV  
} Q <ulh s  
insertSort(data,0,1); K >Q 6  
} OAaLCpRp  
Sx1|Oq]  
/** [ldBI3  
* @param data "m`}J*s"  
* @param j V\AY=u  
* @param i S9[Y1qH>K  
*/ 1a mEQ  
private void insertSort(int[] data, int start, int inc) { ~UHjc0  
int temp; = |E8z u%  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); \,#;gS "  
} Qq%~e41ec  
} BIEq(/-  
} `I8ep=VZ  
vSR5F9  
} mkq246<D~  
h]vEXWpG]  
快速排序: :!^NjO  
Wt.['`c<  
package org.rut.util.algorithm.support; 97/ 4J  
EQQ@nW{;  
import org.rut.util.algorithm.SortUtil; ..5. ":  
RXw1HRR$V  
/** b~2LD3"3  
* @author treeroot 6z]y =J  
* @since 2006-2-2 _sn<"B%>  
* @version 1.0 1'P4{T0 [  
*/ bokr,I3  
public class QuickSort implements SortUtil.Sort{ 0oZZLi  
{9* l  
/* (non-Javadoc) T-h[$fxR_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +F.@n_}p-I  
*/ SLNq%7apx  
public void sort(int[] data) { YP[8d,  
quickSort(data,0,data.length-1); UXh%DOq   
} B6@q`Bmw.  
private void quickSort(int[] data,int i,int j){ "MK2QIo  
int pivotIndex=(i+j)/2; $)~:H-  
file://swap ,& wd  
SortUtil.swap(data,pivotIndex,j); ]^8CtgC  
{-Gh 62hDg  
int k=partition(data,i-1,j,data[j]); &DjA?0`J  
SortUtil.swap(data,k,j); bk&kZI.D  
if((k-i)>1) quickSort(data,i,k-1); #=)!\   
if((j-k)>1) quickSort(data,k+1,j); dc0&*/`:  
V5p^]To!  
} K{,'%|  
/** Vl3-cW@p  
* @param data Z>l|R C  
* @param i @6Lp $w  
* @param j W)'*Dcd  
* @return ]~~G<Yh:=  
*/ xel|,|*Yq  
private int partition(int[] data, int l, int r,int pivot) { B`||4*  
do{ e1y#p3 @d  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); jT/P+2hMW  
SortUtil.swap(data,l,r); 6=qC/1,l  
} 5<e{)$C  
while(l SortUtil.swap(data,l,r); ?:&2iW7z  
return l; \RtFF  
} n 83Dt*O  
+XSe;xk;rD  
} }%AfZ 2g;h  
A6J:!sY4A  
改进后的快速排序: -ssmj8:Q\|  
L8H:, } 2  
package org.rut.util.algorithm.support; 1wH6 hN,  
)\PX1198  
import org.rut.util.algorithm.SortUtil; IuA4eDr^Y%  
f*A B Im  
/** mU  
* @author treeroot D>;_R HK  
* @since 2006-2-2 "shX~zd5  
* @version 1.0 H:OpS-b  
*/ s5 {B1e  
public class ImprovedQuickSort implements SortUtil.Sort { X|/RV4x@Cq  
Pt cq/f  
private static int MAX_STACK_SIZE=4096; *&\6x}.I4  
private static int THRESHOLD=10; cr|]\  
/* (non-Javadoc) Jw#7b[a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,0ilNi>  
*/ gz~ug35  
public void sort(int[] data) { Jt #HbAY  
int[] stack=new int[MAX_STACK_SIZE]; "q1S.3V;  
@t@B(1T  
int top=-1; P;K LN9/4  
int pivot; CrSBN~  
int pivotIndex,l,r; Z:Vde^Ih  
iz)r.TJ  
stack[++top]=0; I3b*sx$  
stack[++top]=data.length-1; uMpuS1  
.'$8Hj;@  
while(top>0){ '9zKaL  
int j=stack[top--]; 7&/1K%x9;  
int i=stack[top--]; }s:3_9mE  
:WsHP\r  
pivotIndex=(i+j)/2; /Oi(5?Jn  
pivot=data[pivotIndex]; [8q`~S%-]  
XT*/aa-1'  
SortUtil.swap(data,pivotIndex,j); )_n(u3'  
wnK6jMjkSf  
file://partition cui%r!D  
l=i-1; 7ku=roPoF  
r=j; m@lUJY  
do{ %#PWD7a\  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ^TjC  
SortUtil.swap(data,l,r); :475FPy]  
} <}h <By)  
while(l SortUtil.swap(data,l,r); Aqz $WTHW+  
SortUtil.swap(data,l,j); $}0!dR2  
MM*~X"A  
if((l-i)>THRESHOLD){ xIW]e1pu=(  
stack[++top]=i; + !" Y C  
stack[++top]=l-1; .C5<uW5-R  
} n~BQq-1  
if((j-l)>THRESHOLD){ 'r ^ .Ao5  
stack[++top]=l+1; w{lj'3z I  
stack[++top]=j; r%WHYhD  
} Oo-4WqRJ  
$tXW/  
} l_$>$d  
file://new InsertSort().sort(data); _L` uC jA  
insertSort(data); u^B!6Sj8  
} m+:JNgX6  
/** "EA =auN{  
* @param data n qx0#_K-E  
*/ 63_#*6Pv28  
private void insertSort(int[] data) { jUl_ToX  
int temp; 5''k|B>  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <;'{Tj-"  
} wq,&0P-v  
} 7cWeB5 e?O  
} sZxTsUW  
e=p_qhBt  
} Vgkj4EE  
FGie*t  
归并排序: >R_m@$`  
\ykA7Y%  
package org.rut.util.algorithm.support; FV7'3fIa  
"L`BuAB  
import org.rut.util.algorithm.SortUtil; PFx.uqp  
f Ayh9  
/** iOCs% J  
* @author treeroot ;K|K]c  
* @since 2006-2-2 auX(d -m  
* @version 1.0 bA2[=6  
*/ "w0~f6o  
public class MergeSort implements SortUtil.Sort{ X8}\m%gCU  
*GY8#Az  
/* (non-Javadoc) =Ti@Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z_'!?K{  
*/ oR!h eCnu  
public void sort(int[] data) { lq]8zm<\)]  
int[] temp=new int[data.length]; rZ5xQ#IA  
mergeSort(data,temp,0,data.length-1); \,n X/f  
} ` ~^My~f  
J%B/(v`  
private void mergeSort(int[] data,int[] temp,int l,int r){ V@s93kh  
int mid=(l+r)/2; ,)!%^ ~v  
if(l==r) return ; ntB#2S  
mergeSort(data,temp,l,mid); ,quUGS  
mergeSort(data,temp,mid+1,r); lj8ficANo  
for(int i=l;i<=r;i++){ S!x;w7j  
temp=data; ?azLaAG  
} RJd*(!y  
int i1=l; 5-k gGOt  
int i2=mid+1; _ W#Km  
for(int cur=l;cur<=r;cur++){ &iq'V*+-\  
if(i1==mid+1) WA1yA*S  
data[cur]=temp[i2++]; \ZhkOl  
else if(i2>r) $Q}L*4?]  
data[cur]=temp[i1++]; p,|)qr:M  
else if(temp[i1] data[cur]=temp[i1++]; 5D?{dA:Rq  
else 0bJT0_  
data[cur]=temp[i2++]; $bF+J8%D  
} c+7I  
} | 2<zYY  
WBJn1  
} #*lDKn[vO  
q[W@.[2y)  
改进后的归并排序: uHbbPtk  
7QZy d-  
package org.rut.util.algorithm.support; 8 $H\b &u  
$!!y v'K  
import org.rut.util.algorithm.SortUtil; Pg`+Q^^6S  
UM`$aPz  
/** s?;V!t  
* @author treeroot '/Vm[L$d  
* @since 2006-2-2 ;"e55|d9I  
* @version 1.0 b"}ya/  
*/ O'^AbO=,  
public class ImprovedMergeSort implements SortUtil.Sort { {M=B5-  
59:kL<;S-  
private static final int THRESHOLD = 10; "R-j  
oRcP4k;d=  
/* n ~&ssFC  
* (non-Javadoc) wv\"(e7(  
* qK@,O \  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y?3u6q++  
*/ `('Up?  
public void sort(int[] data) { EG &me  
int[] temp=new int[data.length]; W>?aZv  
mergeSort(data,temp,0,data.length-1); mr_NArF  
} "Wk K1u  
E5|GP  
private void mergeSort(int[] data, int[] temp, int l, int r) { 0$Zh4Y  
int i, j, k; FEopNDy@y  
int mid = (l + r) / 2; NU{eoqaT  
if (l == r) 0pB'^Q{  
return; : 4lR`%  
if ((mid - l) >= THRESHOLD) 3BLH d<  
mergeSort(data, temp, l, mid); t4~?m{  
else 2v4&'C  
insertSort(data, l, mid - l + 1); 5 ^l-3s?M  
if ((r - mid) > THRESHOLD) 2\O!vp>|-  
mergeSort(data, temp, mid + 1, r); VC Ay~,  
else dvY3=~'  
insertSort(data, mid + 1, r - mid); sT<h+[2d  
|pU>^  
for (i = l; i <= mid; i++) { p&`I#6{  
temp = data; /J c^XWf  
} B=X_c5  
for (j = 1; j <= r - mid; j++) { l +`CgYo  
temp[r - j + 1] = data[j + mid]; %4#ChlXB  
} IsFL"Vx  
int a = temp[l]; ww%4MHPp8  
int b = temp[r]; QZO<'q`L  
for (i = l, j = r, k = l; k <= r; k++) { +:c}LCI9<  
if (a < b) { yd45y}uS;F  
data[k] = temp[i++]; U}=H1f,  
a = temp;  %\B?X;(  
} else { $SniQ  
data[k] = temp[j--]; @}+B%R  
b = temp[j]; RJN LcIm  
} o@} qPvt0  
} HC>k/Gk"  
} 4`r-*Lx  
ashVV~\8A  
/** 91T[@p  
* @param data eD^(*a>(  
* @param l {@-tRm&  
* @param i IWhe N  
*/ ms+gq  
private void insertSort(int[] data, int start, int len) { -*?{/QmKb  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); :4"b(L  
}  M[R'  
} 1JI7P?\B  
} WS@8Z0@RD  
} Dl}va  
S|IDFDn  
堆排序: IZ.b  
(51;cj>J  
package org.rut.util.algorithm.support; IUh)g1u41O  
n.P $E  
import org.rut.util.algorithm.SortUtil; Ye  >+  
)$2h:dw_  
/** g%4=T~  
* @author treeroot 4%TmW/yd  
* @since 2006-2-2 2qKAO/_O  
* @version 1.0 G#'G9/Tm  
*/ *vzj(HGO  
public class HeapSort implements SortUtil.Sort{ k.H4Mf(4  
C\ cZ  
/* (non-Javadoc) zfGr1;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a-5#8  
*/ gkx<<)y l  
public void sort(int[] data) { -N2m|%B  
MaxHeap h=new MaxHeap(); -PiZvge  
h.init(data); ZQ#AEVI,  
for(int i=0;i h.remove(); w /CD-  
System.arraycopy(h.queue,1,data,0,data.length); 9v}vCg  
} fEyc3K'5V  
h&b s`  
private static class MaxHeap{ ^"$~&\+x5  
Psjk 7\  
void init(int[] data){ tZD^<Q7}\  
this.queue=new int[data.length+1]; Lez]{%+.`[  
for(int i=0;i queue[++size]=data; KVpQ,x&q~  
fixUp(size); 8RVeKnpXTV  
} l-[5Zl;"  
} @#5?tk0  
(G{2ec:?  
private int size=0; ~$ 4!C'0  
v%Su#xq/  
private int[] queue; NbhQ-  
6uWPIM;  
public int get() { #j"N5e}U  
return queue[1]; gAy"W$F  
} `%0k\,}V  
8uetv  
public void remove() { ,aSK L1  
SortUtil.swap(queue,1,size--); sRGIHT#  
fixDown(1); V"sm+0J  
} 5U JMiwP{  
file://fixdown <d3N2  
private void fixDown(int k) { (_~Dyvo  
int j; "eKM<S  
while ((j = k << 1) <= size) { BH?fFe&J:`  
if (j < size %26amp;%26amp; queue[j] j++; K%>3ev=y.s  
if (queue[k]>queue[j]) file://不用交换 1f5;^T I  
break; th|TwD&mO  
SortUtil.swap(queue,j,k); Cqw`K P  
k = j; J`A )WsKkb  
} xgB-m[Xi  
} ' C1yqkIa`  
private void fixUp(int k) { xO'xZ%cUI  
while (k > 1) { j|(bdTZY:  
int j = k >> 1; `[.4SIah  
if (queue[j]>queue[k]) o}lA\A  
break; Ns`:=  
SortUtil.swap(queue,j,k); yvKKE  
k = j; 1|#j/  
} KHt#mQy)9  
} NE!]  
Tn\59 (  
} -- |L?-2k,  
u]QG^1.qYe  
} JztSP?  
o7s<G8;?  
SortUtil: UL\gcZ Zkl  
Vb8{OD3PK  
package org.rut.util.algorithm; :.NCS`z_  
hc5iIJ]  
import org.rut.util.algorithm.support.BubbleSort; AU H_~SY  
import org.rut.util.algorithm.support.HeapSort; ln=:E$jX  
import org.rut.util.algorithm.support.ImprovedMergeSort; YU%U  
import org.rut.util.algorithm.support.ImprovedQuickSort; L)/^%/!  
import org.rut.util.algorithm.support.InsertSort; ]Saw}agE[%  
import org.rut.util.algorithm.support.MergeSort; [%BWCd8Q~P  
import org.rut.util.algorithm.support.QuickSort; P}bwEj  
import org.rut.util.algorithm.support.SelectionSort; FKu^{'Y6E0  
import org.rut.util.algorithm.support.ShellSort; /hbdQm  
Ng<oz*>U  
/** H}&4#CQ'!  
* @author treeroot 6ALUd^  
* @since 2006-2-2 AG<TY<nqL  
* @version 1.0 W!WeYV}kb  
*/ 1jQlwT(:  
public class SortUtil { eWAgYe2  
public final static int INSERT = 1; BZWGXzOFh  
public final static int BUBBLE = 2; W2j@Q=YDS  
public final static int SELECTION = 3; C*,PH!$k  
public final static int SHELL = 4; _8nT$!\\  
public final static int QUICK = 5; +h? z7ZY^  
public final static int IMPROVED_QUICK = 6; _f~m&="T!  
public final static int MERGE = 7; 3D"?|rd~  
public final static int IMPROVED_MERGE = 8; Fo[=Dh*AqU  
public final static int HEAP = 9; !3Me 6&$O  
8qQrJFm|3*  
public static void sort(int[] data) { a$P$Ngi?S  
sort(data, IMPROVED_QUICK); |+(Hia,X  
} ^B7C8YP  
private static String[] name={ @c#M^:9Dc  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" \KPwh]0  
}; )Aa  h  
n!t][d/g+  
private static Sort[] impl=new Sort[]{ LuW^Ga"E  
new InsertSort(), ,Taq~  
new BubbleSort(), ?{*/VJl$  
new SelectionSort(), .LHzaeJCX  
new ShellSort(), Y]Y]"y$1  
new QuickSort(), rpO>l  
new ImprovedQuickSort(), piKR*|F  
new MergeSort(), jneos~ 'n8  
new ImprovedMergeSort(), #R$[?fW  
new HeapSort() e.ksN  
}; 8ORr  
5Dlx]_  
public static String toString(int algorithm){ aXO|% qX  
return name[algorithm-1]; /0I=?+QSo  
} ~`Xu 6+1o  
xKC{P{:  
public static void sort(int[] data, int algorithm) { (qXl=e8  
impl[algorithm-1].sort(data); &C7HG^;W9  
} b9@VD)J0E  
\H5{[ZUn  
public static interface Sort { p?zh4:\F+  
public void sort(int[] data); C1KO]e>  
} -$m?ShDd  
^L;k  
public static void swap(int[] data, int i, int j) { Q.Ljz Z  
int temp = data; j>t*k!db  
data = data[j]; -S%)2(f^  
data[j] = temp; *<nfA}  
} v\?J$Hdd  
} Ffp<|2T2_  
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