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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。 d1.@v;  
插入排序: mN{H^  
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package org.rut.util.algorithm.support; S@pdCH, n  
c[,Rh f  
import org.rut.util.algorithm.SortUtil; yD \Kn{  
/** &^&0,g?To  
* @author treeroot ?i0u)< H  
* @since 2006-2-2 eptw)S-j  
* @version 1.0 ?r|iZKa  
*/ & +`g~6U  
public class InsertSort implements SortUtil.Sort{ < `;Mf>V  
k {{eyC  
/* (non-Javadoc) ._p2"<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]Z UE !  
*/ < (9 BO&  
public void sort(int[] data) { %ho?KU2j  
int temp; LR.]&(kyd  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ghW`xm87  
} _)pOkS  
} +Goh`!$Rj9  
} |#t^D.j  
])qnPoQ<n  
} 4J'0k<5S  
(ZF~   
冒泡排序: 3`D*AFQc  
`;G@qp:A  
package org.rut.util.algorithm.support; a"4X7 D+  
21<Sfsc$  
import org.rut.util.algorithm.SortUtil; jp_)NC/~g  
Cs"ivET  
/** .(p_YjIA  
* @author treeroot g@O?0,+1  
* @since 2006-2-2 ShtV2}s|  
* @version 1.0 PY4">~6\i  
*/ OPUrz?p2C  
public class BubbleSort implements SortUtil.Sort{ "}0QxogYE  
l(QntP  
/* (non-Javadoc) mK7SEH;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qldm"Ul  
*/ 6&i])iH  
public void sort(int[] data) { 7^.g\Kt?  
int temp; =v|$dDz  
for(int i=0;i for(int j=data.length-1;j>i;j--){ +5O^{Ce6  
if(data[j] SortUtil.swap(data,j,j-1); sw1gpkX  
} &)q>Z!C-l  
} ^Hf?["m^@  
} <aF B&Fm  
} , DuyPBAms  
|jH Yf42Q  
} F{ 4k2Izr  
'%|Um3);0p  
选择排序: ulg=,+%r  
3^H-,b0^  
package org.rut.util.algorithm.support; qOD^ P  
It'kO jx]  
import org.rut.util.algorithm.SortUtil; YJz06E1 -9  
~_CZ1  
/** HYdt3GtJ?  
* @author treeroot G a$2o6  
* @since 2006-2-2 @~=d4Wj6  
* @version 1.0 FS)C<T]t  
*/ 8rBa}v9  
public class SelectionSort implements SortUtil.Sort { mm!JNb9(  
NU.4_cixb  
/* asvM/ 9  
* (non-Javadoc) 3# 0Nd"/0  
* P _Gu~B!Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OWr\$lm@z$  
*/ IWddJb~hu  
public void sort(int[] data) { H2g#'SK@  
int temp; =yJc pj  
for (int i = 0; i < data.length; i++) { k'"R;^~xg  
int lowIndex = i; ;l `(1Q/  
for (int j = data.length - 1; j > i; j--) { !*qQ 7  
if (data[j] < data[lowIndex]) { c.-dwz  
lowIndex = j; 6~!7?FK  
} KCa @0  
} ^Kl<<pUaV  
SortUtil.swap(data,i,lowIndex); yJ; ;&  
} #K-O<:s=y  
} DM)Re~*  
A)SnPbI-p  
} h|z59h&X8G  
2xy{g&G  
Shell排序: Y,4?>:39J  
K.?S,qg  
package org.rut.util.algorithm.support; %gqu7}'  
A$zC$9{0I  
import org.rut.util.algorithm.SortUtil; ?56;<%0  
s<C66z  
/** 5}9rpN{y  
* @author treeroot <pT1p4T<  
* @since 2006-2-2 qMqf7 .  
* @version 1.0 [--] ?Dr  
*/ "Q.C1#W}.  
public class ShellSort implements SortUtil.Sort{ oB!-JX9  
bM W}.v!  
/* (non-Javadoc) *$t=Lh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?[5_/0L,=  
*/ sU^K5oo  
public void sort(int[] data) { FSZ :}Q  
for(int i=data.length/2;i>2;i/=2){ y>J6)F =  
for(int j=0;j insertSort(data,j,i); 8Sf}z@~]  
} ~fpk`&nhe  
} DQN"85AIZ  
insertSort(data,0,1); w*Ze5j4@ \  
} NU7k2`bqAk  
TDR#'i  
/** wD pL9q  
* @param data lz#@_F|.*  
* @param j NQbgk+&wD  
* @param i Es:oXA  
*/ EF6"PH+J@  
private void insertSort(int[] data, int start, int inc) { RL"hAUs_1  
int temp; @G>&Gu;5  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 90Z4saSUw  
} y8di-d3_  
} ]4_)WUS.c  
} ]A_A4=[w  
mL s>RR#b  
} 3SF J8  
fdKTj =4  
快速排序: ot^$/(W  
}Mc&yjhMrg  
package org.rut.util.algorithm.support; <oTNo>U/k  
\T`iq[+6  
import org.rut.util.algorithm.SortUtil; bXWodOSN  
3)dtl!VMW[  
/** 2ZMVYa2%(  
* @author treeroot u |ru$cIo  
* @since 2006-2-2 `=W#owAF  
* @version 1.0 [k,FJ5X  
*/ A$J?-  
public class QuickSort implements SortUtil.Sort{ v kW2&  
WWIQ6EJO  
/* (non-Javadoc) d[e;Fj!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *ur[u*g  
*/ Zdu8axK:  
public void sort(int[] data) { `hl1R3nBM  
quickSort(data,0,data.length-1); Wl>$<D4mO[  
} 9>L{K   
private void quickSort(int[] data,int i,int j){ 7/c9azmC  
int pivotIndex=(i+j)/2; \v.YP19  
file://swap S\11 8TpD  
SortUtil.swap(data,pivotIndex,j); <:0d%YB)  
lz0'E'%{P  
int k=partition(data,i-1,j,data[j]); }/-TT0*6j<  
SortUtil.swap(data,k,j); 0\Myhh~DLE  
if((k-i)>1) quickSort(data,i,k-1); N07FU\<9  
if((j-k)>1) quickSort(data,k+1,j); p( [FZ  
LsV?b*^(p  
} A|0\ct  
/** b0Fr]oGp  
* @param data X;p4/ *U  
* @param i :P\RiaZAT  
* @param j ')v<MqBr  
* @return _s NJU  
*/ kD4J{\  
private int partition(int[] data, int l, int r,int pivot) { fK9wr@1  
do{ X7fJ+C n  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); eRwm>l"fVV  
SortUtil.swap(data,l,r); ^Ea^t.c}_  
} R)5zHCwOw  
while(l SortUtil.swap(data,l,r); P*8DM3':  
return l; )@.6u9\  
} cvv(OkC  
Iqm QQ_KH  
} ,OaPrAt-  
vEb_z[gd  
改进后的快速排序: 9|LV x3]  
! ^U!T\qDi  
package org.rut.util.algorithm.support; ]g0\3A  
\bWo"Yo  
import org.rut.util.algorithm.SortUtil; 8G p%Q  
dI9u: -  
/** JNgl  
* @author treeroot rXg#_c5j  
* @since 2006-2-2 b+ v!3|  
* @version 1.0 J*'#! xIa  
*/ K.2l)aRd  
public class ImprovedQuickSort implements SortUtil.Sort { /M8&`  
]$a,/Jt  
private static int MAX_STACK_SIZE=4096; N[dv  
private static int THRESHOLD=10; K9N\E"6ZP  
/* (non-Javadoc) XnI)s^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9"mcN3x:\e  
*/ "G @(AE(  
public void sort(int[] data) { Snf1vH  
int[] stack=new int[MAX_STACK_SIZE]; sa>}wz<o  
ZA/:\6gm  
int top=-1; ZU-vZD>  
int pivot; N|L Ey  
int pivotIndex,l,r; mg7Q~SLL{  
Hb{G RG70  
stack[++top]=0; 4XL]~3 c  
stack[++top]=data.length-1; ZQPv@6+oY  
X` FFI6pb  
while(top>0){ v %fRq!~  
int j=stack[top--]; LZG ~1tf  
int i=stack[top--]; #}{1>g{sXt  
_3?7iH  
pivotIndex=(i+j)/2; V:8ph`1  
pivot=data[pivotIndex]; ZI'Mr:z4  
A#B6]j)  
SortUtil.swap(data,pivotIndex,j); ~kAen  
\a6knd  
file://partition MX{p)(HW  
l=i-1; .V:H~  
r=j; H+ Y+8   
do{ n9Xssl0  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Kn<z<>vO  
SortUtil.swap(data,l,r); vg/:q>o  
} rG|*74Q]  
while(l SortUtil.swap(data,l,r); b!Z-HL6  
SortUtil.swap(data,l,j); l^ aUN  
"Gh?hU,WWZ  
if((l-i)>THRESHOLD){ Tp0^dZM+  
stack[++top]=i; tag~SG`ov  
stack[++top]=l-1; /*8Ms`  
} ?u]%T]W  
if((j-l)>THRESHOLD){ Z#lZn!EbK  
stack[++top]=l+1; 4-:TQp(  
stack[++top]=j; s&7,gWy}BE  
} =5sUpP V(  
j3`"9bY  
} !(EJ.|LH  
file://new InsertSort().sort(data); gM<*(=x'  
insertSort(data); aZMMcd   
} ,TAzJ  
/** `II/nv0jn  
* @param data z"C+r'39d=  
*/ S4?N_"m9  
private void insertSort(int[] data) { i; 3^vhbQ  
int temp; ua]>0\D  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !wttKUO?  
} \y G//  
} HFL(t]  
} }.UE<>OX  
iX{Lc+u3  
} Iq-+X3i  
f;;(Q-.  
归并排序: mzl %h[9iI  
SH/KC  
package org.rut.util.algorithm.support; do:3aP'S,  
62X;gb  
import org.rut.util.algorithm.SortUtil; _bO4s#yI  
IW.~I,!x  
/** 0V&6"pF_Y'  
* @author treeroot ]`2=<n;=  
* @since 2006-2-2 62 biOea  
* @version 1.0 q{W@J0U  
*/ ;(0E#hGN  
public class MergeSort implements SortUtil.Sort{ +h$) l/>:  
J\@yP  
/* (non-Javadoc) 2Rp5 E^s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j<LDJi>O  
*/ |\OG9{q  
public void sort(int[] data) {  OBY  
int[] temp=new int[data.length]; Q( C\X  
mergeSort(data,temp,0,data.length-1); prC1<rm  
} JPX5Jm()  
*@|EaH/  
private void mergeSort(int[] data,int[] temp,int l,int r){ D#T1~r4  
int mid=(l+r)/2; P2S$Dk_<\X  
if(l==r) return ; av&4:O!  
mergeSort(data,temp,l,mid); K 0i[D"  
mergeSort(data,temp,mid+1,r); 4$=Dq$4z  
for(int i=l;i<=r;i++){ wh\J)pA1  
temp=data; xi]qdiA  
} I3A@0'Vm;L  
int i1=l; 4q`$nI Bi  
int i2=mid+1; (\ze T5  
for(int cur=l;cur<=r;cur++){ P-?ya!@"  
if(i1==mid+1) Ed%8| M3  
data[cur]=temp[i2++]; J0e~s  
else if(i2>r) h] (BTb#-  
data[cur]=temp[i1++]; qd9CKd  
else if(temp[i1] data[cur]=temp[i1++]; sz'IGy%  
else /\S1p3EW*  
data[cur]=temp[i2++];  lqO"  
} {o?+T );Z  
} 6}YWM]c%  
D|u! KH  
} 0{/P1  
f*VBSg[`  
改进后的归并排序: g9fS|T  
`JGV3nN  
package org.rut.util.algorithm.support; 7[wHNJ7)r  
|Go?A/'  
import org.rut.util.algorithm.SortUtil; Cc?BJ  
)19As8rL/o  
/** B*+3A!{s  
* @author treeroot idLysxN  
* @since 2006-2-2 QeYO)sc`  
* @version 1.0 K0#kW \4`  
*/ a sDq(J`sQ  
public class ImprovedMergeSort implements SortUtil.Sort { 'Jb6CR n  
lD;="b  
private static final int THRESHOLD = 10; S aCa  
BTXS+mvl  
/* [/}y!;3iXM  
* (non-Javadoc) %E95R8SL  
* #OKzJ"g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I<q=lK  
*/ s }]qlg  
public void sort(int[] data) { sbZ$h <  
int[] temp=new int[data.length]; 7a@%^G @!  
mergeSort(data,temp,0,data.length-1); 17Q1Xa  
} :>U2yI  
0W|}5(C  
private void mergeSort(int[] data, int[] temp, int l, int r) { 6t0!a@t  
int i, j, k; %-y%Q.;k ?  
int mid = (l + r) / 2; %ec9`0^4S  
if (l == r) E\V-< ]o  
return; gWo`i  
if ((mid - l) >= THRESHOLD) x~Eg ax  
mergeSort(data, temp, l, mid); oaI|A^v  
else ESk<*-  
insertSort(data, l, mid - l + 1); lF]cUp#<  
if ((r - mid) > THRESHOLD) U2*g9Es  
mergeSort(data, temp, mid + 1, r); 78v4c Q Y  
else LFsrqdzJ  
insertSort(data, mid + 1, r - mid); x&6SjlDb$K  
(vCMff/ Y1  
for (i = l; i <= mid; i++) { B/S~Jn  
temp = data; \bze-|C  
} W ?;kMGW-  
for (j = 1; j <= r - mid; j++) { UXz0HRRS0  
temp[r - j + 1] = data[j + mid]; B!|<<;Da6  
} ~c>*3*  
int a = temp[l]; C3n_'O  
int b = temp[r]; 2\flTO2Ny  
for (i = l, j = r, k = l; k <= r; k++) { 4J=6A4O5Z  
if (a < b) { K-&&%Id6R  
data[k] = temp[i++]; pA(B~9WQ  
a = temp;  D(}w$hi8  
} else { D];%Ey  
data[k] = temp[j--]; ,6,sz]3-  
b = temp[j]; bWN%dn$$M  
} ,EyZ2`|  
} #rL%K3'  
} j rX .e  
MP|J 0=H5  
/** b[Z5:[@\#  
* @param data &uwj&-u?  
* @param l {{b&l!  
* @param i RbUhLcG5  
*/ C9-IJj  
private void insertSort(int[] data, int start, int len) { \{F{yq(  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); nezdk=8J/  
} vEJ2d&  
} 9$&+0  
} hlPZTr=a  
} 9Foo8e  
p`// *gl  
堆排序: Byf5~OC  
pyEi@L1p  
package org.rut.util.algorithm.support; T:ye2yg  
/"A)}>a  
import org.rut.util.algorithm.SortUtil; d'~sy>  
8}m bfu o1  
/** <szD"p|K  
* @author treeroot =%, ;=4w  
* @since 2006-2-2 VeixwGZ.  
* @version 1.0 z4f\0uQ  
*/ x0^O?UR  
public class HeapSort implements SortUtil.Sort{ O$}p}%%y7  
v\Zni4  
/* (non-Javadoc) tGGv 2TCEy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T+z]ztO  
*/ pK=$)<I"6  
public void sort(int[] data) { 90)0\i+P  
MaxHeap h=new MaxHeap(); w ^ v*1KA&  
h.init(data); 2Yd0:$a  
for(int i=0;i h.remove(); t+'|&b][Qi  
System.arraycopy(h.queue,1,data,0,data.length); ,3_;JT"5  
} R:zPU   
+NGjDa  
private static class MaxHeap{ acuch  
(pBOv:6  
void init(int[] data){ i"=6n>\  
this.queue=new int[data.length+1]; b#U nE  
for(int i=0;i queue[++size]=data; Txkmt$h  
fixUp(size); SFrQPdX6V  
} E#t;G: +A  
} zzsQfI#  
v,Lv4)  
private int size=0; P-9[,3Zd  
3$Ew55  
private int[] queue; "(y",!U@  
-TKS`,#  
public int get() { 70p1&Y7or  
return queue[1]; 8X=cGYC#  
} <vx/pH)f  
rrK&XP&  
public void remove() { f,9jK9/$  
SortUtil.swap(queue,1,size--); (~F{c0 \C  
fixDown(1); O5HK2Xg,C  
} fY@Y$S`Fh  
file://fixdown yjZ]_.  
private void fixDown(int k) { p<1z!`!P  
int j; _@CY_`a  
while ((j = k << 1) <= size) { ;Ee!vqD2  
if (j < size %26amp;%26amp; queue[j] j++; u.( WW(/N  
if (queue[k]>queue[j]) file://不用交换 QFOmnbJg  
break; wD|,G!8E2  
SortUtil.swap(queue,j,k); #L}Y Z  
k = j; uGm~ Oo  
} ^R* _Q,o#  
} k CkSu-  
private void fixUp(int k) { NvH9?Ek"  
while (k > 1) { m1x7f% _  
int j = k >> 1;  ,lX5-1H  
if (queue[j]>queue[k]) VuqN)CE^Uq  
break; OU;R;=/]  
SortUtil.swap(queue,j,k); >$,A [|R  
k = j; &V7@ TZ  
} .'o<.\R8  
} &V5[Zj|]  
f}q4~NPn-  
} ,]?Xf >  
=[%ge{,t  
} :USN`"  
*Dr-{\9  
SortUtil: 12 HBq8o  
44 bTx y  
package org.rut.util.algorithm; }qy,/<R  
~m^.&mv3/  
import org.rut.util.algorithm.support.BubbleSort; ~ZeF5  
import org.rut.util.algorithm.support.HeapSort; (9:MIP  
import org.rut.util.algorithm.support.ImprovedMergeSort; 6@pP aq6  
import org.rut.util.algorithm.support.ImprovedQuickSort; xW@y=l Cu  
import org.rut.util.algorithm.support.InsertSort; J2cqnwUV  
import org.rut.util.algorithm.support.MergeSort; Wz)O,X^  
import org.rut.util.algorithm.support.QuickSort; 0yW#).D^b  
import org.rut.util.algorithm.support.SelectionSort; m&/{iCwp  
import org.rut.util.algorithm.support.ShellSort; ;h[p "  
;V(- ;O  
/** 8 wGq:@# =  
* @author treeroot vK2sj1Hzr  
* @since 2006-2-2 ~l$u~:4Ob  
* @version 1.0 nR)/k,3W  
*/ 1e`/N+6u  
public class SortUtil { Df;EemCh  
public final static int INSERT = 1; >|%dN jf@Q  
public final static int BUBBLE = 2; RUcpdeo  
public final static int SELECTION = 3; 5/j7C>  
public final static int SHELL = 4; hwF9LD~^  
public final static int QUICK = 5; UhuEE  
public final static int IMPROVED_QUICK = 6; b%`^KEvwfo  
public final static int MERGE = 7; utIR\e#:B  
public final static int IMPROVED_MERGE = 8; :V1ttRW}52  
public final static int HEAP = 9; eliT<sw8  
[{.e1s<EK  
public static void sort(int[] data) { OiI[w8  
sort(data, IMPROVED_QUICK); #<ppiu$  
} r|$@Wsb?#  
private static String[] name={ ~(E.$y7P  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" }{>)2S  
}; j8p</gd  
nn>1OO  
private static Sort[] impl=new Sort[]{ ""cnZZ5)  
new InsertSort(), 4yhan/zA  
new BubbleSort(), ^LfN6{  
new SelectionSort(), H/8H`9S$  
new ShellSort(), <CrNDY  
new QuickSort(), N@D]Q&;+(T  
new ImprovedQuickSort(), 8S2sNpLi-g  
new MergeSort(), *`~ woF  
new ImprovedMergeSort(), dQUZ11  
new HeapSort() ^z&eD,  
}; -2NXQ+m ;  
{)j~5m.,/o  
public static String toString(int algorithm){ Oax*3TD  
return name[algorithm-1]; #+)AIf  
} I&9_F% rX  
V~j:!=b%v  
public static void sort(int[] data, int algorithm) { f,QoA  
impl[algorithm-1].sort(data); "`P/j+-rt  
} `#O%ZZ+  
ML6Y_|6 |  
public static interface Sort { H;('h#=cD  
public void sort(int[] data); U5X\RXy~  
} *1F DK{  
zTtn`j$  
public static void swap(int[] data, int i, int j) { p<b//^   
int temp = data; &L3OP@;  
data = data[j]; BJGL &N  
data[j] = temp; 5,/rh,?  
} N ]KS\  
} I'&#pOB  
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