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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。 )p~BQ~eip;  
插入排序: /`6ZAo m9  
:SGF45>B@  
package org.rut.util.algorithm.support; 9lW;Nk*j:  
Yl#Rib  
import org.rut.util.algorithm.SortUtil; j  S?xk  
/** KOp162X>r  
* @author treeroot # P?6@\  
* @since 2006-2-2 >9(hUH  
* @version 1.0 weE/TW\e  
*/ <Gt2(;  
public class InsertSort implements SortUtil.Sort{ o(r\E0 I  
R&Jm +3N  
/* (non-Javadoc) CO2C{~Q5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]zQo>W$  
*/ ;r>snJ=M  
public void sort(int[] data) { +tk{"s^r*  
int temp; .$%Soyr?,  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2#<xAR  
} %d>=+Ds[  
} a(9L,v#?  
} A%D7bQ  
l*kPOyB  
} Zuw?58RE\  
A Q+]|XYo_  
冒泡排序: _-9@qe  
9v }G{mQ#  
package org.rut.util.algorithm.support; ;M_o)OS3  
q|v(Edt|_[  
import org.rut.util.algorithm.SortUtil; ]"1`+q6i  
0LfU=X0#7  
/** &znQ;NH#  
* @author treeroot KA){''>8  
* @since 2006-2-2 & M~`:R  
* @version 1.0 _%B^9Yl3(  
*/ 839IRM@'5  
public class BubbleSort implements SortUtil.Sort{ qZh1`\G  
;IVDr:  
/* (non-Javadoc) 8ZKo_I\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h|h>u ^@  
*/ 3v mjCm  
public void sort(int[] data) { N^pJS6cJkl  
int temp; <oWB0%  
for(int i=0;i for(int j=data.length-1;j>i;j--){ DWID$w  
if(data[j] SortUtil.swap(data,j,j-1); &/uu)v  
} &%s8L\?  
} '{J&M|<A  
} <YOLxR  
} AjT%]9 V?  
Xy@7y[s]  
} 1 29q`u;  
=9z[[dQ|L  
选择排序: e#Z$o($t  
Yb /i{@AJ  
package org.rut.util.algorithm.support; tX@_fYb  
F8uNL)gKj)  
import org.rut.util.algorithm.SortUtil; kH4Ai3#g  
E/09hD Q  
/** "bm  
* @author treeroot r4QxoaM  
* @since 2006-2-2 $zyIuJN#  
* @version 1.0 RheRe  
*/ @~#Ym1{W  
public class SelectionSort implements SortUtil.Sort { ooV3gj4  
rN%F) q#  
/* .9"Y_/0   
* (non-Javadoc) V\{tmDE  
* h-m \%|D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )* Q-.Je/U  
*/ KM !k$;my  
public void sort(int[] data) { Fb4`|  
int temp; UY<e&Npo  
for (int i = 0; i < data.length; i++) { FI<q@HF  
int lowIndex = i; x,otFp  
for (int j = data.length - 1; j > i; j--) { g=2Rqi5  
if (data[j] < data[lowIndex]) { g*F'[Z."  
lowIndex = j; /-qxS <?o  
} :LQ5 u[g$\  
} h~(D@/tB  
SortUtil.swap(data,i,lowIndex); !O#dV1wAa  
} {fEwA8Ir  
} lr{?"tl_  
' /$d0`3B>  
} ,N e;kI  
^RP)>d9Xp{  
Shell排序: ph_4q@  
[ e8x&{L-_  
package org.rut.util.algorithm.support; |<Gl91  
]Z oD'-,  
import org.rut.util.algorithm.SortUtil; `d[1`P1i[  
*JaqTI,e  
/** Qhw^S*  
* @author treeroot %<\6TZr  
* @since 2006-2-2 !Yw3 d   
* @version 1.0 TD9;kN1`  
*/ Xu>r~^w=S  
public class ShellSort implements SortUtil.Sort{ r)1'ePI"  
WJ d%2pO]  
/* (non-Javadoc) s-RQMK}H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w,Lvt }  
*/ OKP9CLg9  
public void sort(int[] data) { q-rB2  
for(int i=data.length/2;i>2;i/=2){ %rF?dvb;?  
for(int j=0;j insertSort(data,j,i); ?  BE6  
} gi-Yqco  
} =r.mlc``W  
insertSort(data,0,1); }->.k/vc  
} A)~X,  
R-RDT9&<  
/** p?2Y }9  
* @param data d~?X/sJ t  
* @param j (s1k$@d  
* @param i Z{ u a=0  
*/ $F/EJ>  
private void insertSort(int[] data, int start, int inc) { [tH-D$V  
int temp; A 5+rd{k/  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); JGFt0He]  
} =fYL}m5E  
} PT^c^{V  
} AxZD-|.  
< n:}kQTT  
} Zo}y(N1K}  
s (0*  
快速排序: 1O!/g  
DEw8*MN  
package org.rut.util.algorithm.support; s%!`kWVJ.  
/%I7Vc  
import org.rut.util.algorithm.SortUtil; V=X:=  
; h`0ir4[A  
/** )m&U#S _;  
* @author treeroot H%1$,]F  
* @since 2006-2-2 `g_"GE  
* @version 1.0 2o9$4{}rG  
*/ S8l1"/?aHE  
public class QuickSort implements SortUtil.Sort{ {66fG53x  
sjM;s{gy  
/* (non-Javadoc) 8`]=C~ G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;),BW g  
*/ e } *0ghKI  
public void sort(int[] data) { ~=wC wA|1  
quickSort(data,0,data.length-1); Dgql?+2$  
} 9M /SH$Qy  
private void quickSort(int[] data,int i,int j){ `s]4AKBO  
int pivotIndex=(i+j)/2; =rd|0K"(r  
file://swap 4#(ZNP  
SortUtil.swap(data,pivotIndex,j); 9~0^PzTA  
;ml 3  
int k=partition(data,i-1,j,data[j]); `T2$4>!  
SortUtil.swap(data,k,j); j6,ZEm  
if((k-i)>1) quickSort(data,i,k-1); IF +i3#$  
if((j-k)>1) quickSort(data,k+1,j); 6ATtW+sN]  
Ox#Q2W@Uy  
} kJAn4I.l  
/** @O}7XRJ_8  
* @param data `$604+G  
* @param i {u\%hpD_  
* @param j : 5U"XY x@  
* @return 3pXLSdxB  
*/ cM&2SRBZ  
private int partition(int[] data, int l, int r,int pivot) { &6j<ca  
do{ /_\#zC[  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ==H$zmK  
SortUtil.swap(data,l,r); P(SZ68  
} @+Y8*Rj\3  
while(l SortUtil.swap(data,l,r); f7hXQ|$  
return l; 3S BZ>  
} }K(o9$V ^!  
` r']^ ,  
} o+?r I p  
,&YTj>  
改进后的快速排序: Zw] ?.  
XTeb9h)3  
package org.rut.util.algorithm.support; CodSJ,  
;50_0Mv;(:  
import org.rut.util.algorithm.SortUtil; .5Q:Xp  
l+wc '= ]  
/** 4.K'\S  
* @author treeroot U,lJ"$'  
* @since 2006-2-2 >J=<bhR  
* @version 1.0 1# t6`N]?V  
*/ L fl-!1  
public class ImprovedQuickSort implements SortUtil.Sort { CkRX>)=py  
zQH]s?v  
private static int MAX_STACK_SIZE=4096; _ jAo:K_Z  
private static int THRESHOLD=10; =C f(B<u  
/* (non-Javadoc) Dz_eB"}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DP7C?}(  
*/ 3P <'F2o  
public void sort(int[] data) { [rreFSy#@  
int[] stack=new int[MAX_STACK_SIZE]; h7;bclU  
C2<CWPn<  
int top=-1; 'FzN[% K"  
int pivot; PK&2h,Cu+  
int pivotIndex,l,r; 0m+8P$)C%  
4Z)DDz-}V  
stack[++top]=0; QfQ\a%cc  
stack[++top]=data.length-1; }t>q9bZ9z  
y1BgK>R  
while(top>0){ |*,jU;NI  
int j=stack[top--]; Gqyue7;0,  
int i=stack[top--]; qd!#t]  
Sd:.KRTu.  
pivotIndex=(i+j)/2; Jbp5'e _  
pivot=data[pivotIndex]; (Btv ClZ  
y~F<9;$=  
SortUtil.swap(data,pivotIndex,j); ^GYq#q9Q  
4?/7 bc  
file://partition cCxi{a1uo  
l=i-1; 3D)b*fPc  
r=j; .dI)R40L/\  
do{ g-yi xU  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); }.:d#]g8  
SortUtil.swap(data,l,r); }#=Od e  
} [.q(h/b  
while(l SortUtil.swap(data,l,r); K@@9:T$  
SortUtil.swap(data,l,j); >Wh3MG6  
=Mhg  
if((l-i)>THRESHOLD){ PaVO"y]C  
stack[++top]=i; yty` 2$O  
stack[++top]=l-1; =J@`0H"  
} [xpQH?  
if((j-l)>THRESHOLD){ M^H90GN)X  
stack[++top]=l+1; 3:|-#F*k{  
stack[++top]=j; ]@SU4  
} 00M`%c/  
p\U*;'hv  
} Sue 6+p  
file://new InsertSort().sort(data); {TL +7kiX/  
insertSort(data); Z~3u:[x";  
} 6~W u`  
/** viuiqs5[Bi  
* @param data C(]'&~}(  
*/ ):bu;3E  
private void insertSort(int[] data) { JfTfAq]  
int temp; FD6v /Y  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `Lz1{#F2G  
} lIuXo3  
} "g `nsk  
} (G8  
'8r8%XI  
} 3C"_$?y"  
vF>gU_gz.  
归并排序: Yg6I&#f7&  
X&\o{w9%  
package org.rut.util.algorithm.support; id?_>9@P  
4uX(_5#j  
import org.rut.util.algorithm.SortUtil; a{_ KSg  
O|UxFnB}  
/** 8U^D(jrz  
* @author treeroot aqfL0Rg+`  
* @since 2006-2-2 ck$2Ue2`@w  
* @version 1.0 [A_r1g&_  
*/ oP]L5S&A  
public class MergeSort implements SortUtil.Sort{ ogeRYq,g  
 vbKQ*  
/* (non-Javadoc) ,QS'$n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :^G%57NX  
*/ 0VIZ=-e  
public void sort(int[] data) { 6+ 8mV8{-8  
int[] temp=new int[data.length]; \/,g VT  
mergeSort(data,temp,0,data.length-1); 1D$::{h  
} d_iY&-gq/  
J v<$*TVS0  
private void mergeSort(int[] data,int[] temp,int l,int r){ Ofm5[q=  
int mid=(l+r)/2; ]xR4->eix  
if(l==r) return ; sA\L7`2H  
mergeSort(data,temp,l,mid); M@O2 WB1ws  
mergeSort(data,temp,mid+1,r); sPpS~wk*  
for(int i=l;i<=r;i++){ |yAK@ Hl'  
temp=data; 9- G b"hr  
} aQmfrx  
int i1=l; u&SZ lkf6%  
int i2=mid+1; k2OM="Ei}  
for(int cur=l;cur<=r;cur++){ y#bK,}  
if(i1==mid+1) jvO3_Zt9  
data[cur]=temp[i2++]; ]-KV0H  
else if(i2>r) 0IFlEe[>#  
data[cur]=temp[i1++]; sJ7sjrEp 1  
else if(temp[i1] data[cur]=temp[i1++]; </yo9.  
else h^d\xn9GT#  
data[cur]=temp[i2++]; ;>C9@S+  
} P/`m3aSzX.  
} "!a`ygqpT  
+@>:%yX  
} Tc,$TCF  
!a4cjc(  
改进后的归并排序: !u%9;>T7  
Oc^m_U8>^  
package org.rut.util.algorithm.support; 2C{/`N  
7(@(Hm  
import org.rut.util.algorithm.SortUtil; F8 ?uQP8  
aG Ef#A  
/** 3d@ef |  
* @author treeroot hA5,w_G/  
* @since 2006-2-2 w^ U}|h"  
* @version 1.0 }\4p3RQrz  
*/ ?k::tNv0  
public class ImprovedMergeSort implements SortUtil.Sort { e2Ww0IK!E  
(s Jq;Z  
private static final int THRESHOLD = 10; k)i"tpw  
hU)'OKe  
/* X/wmKi  
* (non-Javadoc) C{)HlOW  
* FbBX}n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lY->ucS %P  
*/ 1XGG.+D  
public void sort(int[] data) { r!~(R+,c  
int[] temp=new int[data.length]; rV~T>x  
mergeSort(data,temp,0,data.length-1); `11#J;[@G  
} rd|crD 3  
+Tp%5+E  
private void mergeSort(int[] data, int[] temp, int l, int r) { k}-]W@UCa?  
int i, j, k; ]xI?,('_m  
int mid = (l + r) / 2; PC[cHgSYU  
if (l == r) gjQ=8&i  
return; vi<X3G6Xh  
if ((mid - l) >= THRESHOLD) }/4 9T  
mergeSort(data, temp, l, mid); ?n&$m  
else _l<| 1nH  
insertSort(data, l, mid - l + 1); QS5H >5M)  
if ((r - mid) > THRESHOLD) }ymc5-  
mergeSort(data, temp, mid + 1, r); ;fj9 n-  
else rWqkdi1  
insertSort(data, mid + 1, r - mid); %P(;8sS  
Kc-Y  
for (i = l; i <= mid; i++) { Gxo# !  
temp = data; u2\+?`Ox  
} s><IykIi  
for (j = 1; j <= r - mid; j++) { ?LR"hZ>  
temp[r - j + 1] = data[j + mid]; 61L7 -~  
} Ogd8!'\  
int a = temp[l]; ;C+cE#   
int b = temp[r]; e/ WBgiLw  
for (i = l, j = r, k = l; k <= r; k++) { U|9U(il  
if (a < b) { [4ee <J  
data[k] = temp[i++]; T ^N L:78  
a = temp; t18UDR{  
} else { v&e-`.xR  
data[k] = temp[j--]; L)1C'8 ).  
b = temp[j]; kAY@^vi  
} Z6NJ)XQy6F  
} K q/~T7Ru  
} Uld_X\;Q4  
9e-*JYF]C  
/** u >81dO]H  
* @param data xJ N|w\&  
* @param l 'N*!>mZ<  
* @param i jk K#e$7  
*/ cJSVT8  
private void insertSort(int[] data, int start, int len) { g;(_Y1YQ  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); FT<H ]Nf  
} (LRNU)vD7$  
} BSOjyy1f  
} ]c5DOv&  
} B'<!k7Ewy  
\y[Bu^tk  
堆排序: ^v ]UcnB0  
3Ca \`m)l  
package org.rut.util.algorithm.support; n}=rj7  
tF<^9stM  
import org.rut.util.algorithm.SortUtil; #"hJpyW 4V  
7[4_+Q:}  
/** ^GE^Q\&D&  
* @author treeroot =d}gv6v2S  
* @since 2006-2-2 *Yj~]E0`1  
* @version 1.0 +:fqL  
*/ ESn6D@"  
public class HeapSort implements SortUtil.Sort{ p(~Y" H  
yI3Q|731)  
/* (non-Javadoc) JL?Cnk$!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 45?*:)l:  
*/ ||yXp2  
public void sort(int[] data) { R:]/{b4Uq  
MaxHeap h=new MaxHeap(); *Kp}B}}J  
h.init(data); 1d/NZJ9  
for(int i=0;i h.remove(); Po'-z<}wS  
System.arraycopy(h.queue,1,data,0,data.length); +ylxezc  
} xOwNCh  
tCuN?_ UG  
private static class MaxHeap{ 3w t:5 Im  
umZlIH[7  
void init(int[] data){ P4hZB_.=  
this.queue=new int[data.length+1]; fL(':W&n-  
for(int i=0;i queue[++size]=data; 5ze`IY  
fixUp(size); I/mvQxp  
} !'Pk jP  
} VV?]U$  
Y0@'za^y  
private int size=0; "kcpA#uD|  
#.<*; rB  
private int[] queue; o G (0i  
w 9G_>+?E  
public int get() { f0/jwfL  
return queue[1]; JX2mTQ  
} Fl B, (Cm  
;3 G~["DA  
public void remove() { $?[1#%  
SortUtil.swap(queue,1,size--); _=o1?R  
fixDown(1); "L9C  
} N|UBaPS|o  
file://fixdown jN31\)/i  
private void fixDown(int k) { =''mpIg(  
int j; nu#aa#ex>  
while ((j = k << 1) <= size) { <P+G7!KZ&  
if (j < size %26amp;%26amp; queue[j] j++; 0\? _ lT2  
if (queue[k]>queue[j]) file://不用交换 Aqa6R+c  
break; 'q{PtYr  
SortUtil.swap(queue,j,k); H(X+.R,Thp  
k = j; /1IvLdPIu  
} 6.7`0v?,n  
} vh<]aiY  
private void fixUp(int k) { //#xK D  
while (k > 1) { fKPiRlLS  
int j = k >> 1; JVD@I{  
if (queue[j]>queue[k]) q,<n,0)K  
break; kb/|;!  
SortUtil.swap(queue,j,k); pi^^L@@ d  
k = j; (! xg$Kz@  
} )$ ofl%+  
} aEcktg6h  
i!CKA}",  
} mgJShn8]  
B0-4 ZT  
} ."~7 \E> t  
lAdOC5+JX  
SortUtil: 80{#bb  
RnMBGxa  
package org.rut.util.algorithm; @m+pr\h(  
GCcwEl!K^  
import org.rut.util.algorithm.support.BubbleSort; e#l*/G*,  
import org.rut.util.algorithm.support.HeapSort; g0^~J2sDd  
import org.rut.util.algorithm.support.ImprovedMergeSort; *\=2KIF'  
import org.rut.util.algorithm.support.ImprovedQuickSort; mtSNl|O&{  
import org.rut.util.algorithm.support.InsertSort; Y&?|k'7  
import org.rut.util.algorithm.support.MergeSort; UI|v/(_^F  
import org.rut.util.algorithm.support.QuickSort; 03X<x|  
import org.rut.util.algorithm.support.SelectionSort; "\VW. S  
import org.rut.util.algorithm.support.ShellSort; GOv9 2$e  
y+K7WUwhq  
/** AzHIp^  
* @author treeroot P`\m9"7  
* @since 2006-2-2 S/@dkHI'  
* @version 1.0 - XE79 fQ  
*/ /2g)Z!&+L  
public class SortUtil { %k/ k]: s  
public final static int INSERT = 1; iYO wB'z  
public final static int BUBBLE = 2; uvu**s  
public final static int SELECTION = 3; '#cT4_D^lI  
public final static int SHELL = 4; uznoyj6g  
public final static int QUICK = 5; .jU|gf:x  
public final static int IMPROVED_QUICK = 6; pr0@sri@  
public final static int MERGE = 7; c[wQJc  
public final static int IMPROVED_MERGE = 8; OoAr%  
public final static int HEAP = 9; JVJ1Ay/be  
j33P~H~  
public static void sort(int[] data) { *=-__|t  
sort(data, IMPROVED_QUICK); WmT}t  
} $$2S*qY  
private static String[] name={  At`1)  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" % j[O&[s}  
}; hRuo,FS#:  
!.;xt L   
private static Sort[] impl=new Sort[]{ AmT| %j&3  
new InsertSort(), ~pd1 )  
new BubbleSort(), 4 |:Q1  
new SelectionSort(), Vu|Br  
new ShellSort(), -V;0_Nx7p  
new QuickSort(), )8 "EI-/.  
new ImprovedQuickSort(), O84v*=uA  
new MergeSort(), !1a|5 xrn  
new ImprovedMergeSort(), EzD -1sJ  
new HeapSort() >gX0Ij#G  
}; nZ`2Z7!  
[a>JG8[ ,t  
public static String toString(int algorithm){ }}sRTW  
return name[algorithm-1]; !7IT~pO`  
} }5o~R~H  
U:mq7Rd8  
public static void sort(int[] data, int algorithm) { (n":] 8}  
impl[algorithm-1].sort(data); WuP([8  
} X/`#5<x  
:/yr(V{  
public static interface Sort { [6,]9|~  
public void sort(int[] data); \p>]G[g  
} Y^c,mK^  
X]JpS  
public static void swap(int[] data, int i, int j) { C0t+Q  
int temp = data; ,E*a$cCw  
data = data[j]; ? RR Srr1  
data[j] = temp; e6{[o@aM{  
} \J,- <wF  
} xY\*L:TwW  
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