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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。 D@uVb4uK  
插入排序: t jThQ  
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package org.rut.util.algorithm.support; >A{Dpsi\  
,4"N7_!7  
import org.rut.util.algorithm.SortUtil; Y }VJ4!%U  
/**  ri4z^1\  
* @author treeroot Fvk=6$d2  
* @since 2006-2-2 #w|v.35%?  
* @version 1.0 [(*Eg!?W=  
*/ =A,B'n\R  
public class InsertSort implements SortUtil.Sort{ !~C%0{9+u@  
YNV, dKB  
/* (non-Javadoc) MUl7o@{'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P.Bwfa  
*/ P,pC Z+H  
public void sort(int[] data) { ZbT$f^o}M]  
int temp; xRc+3Z= N  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); L,A+"  
} %R?7u'=~  
} T=YVG@fm?  
} ' 8)kFR^9  
h9 DUS,G9,  
} $Z)u04;&@  
>#:SJ?)`T  
冒泡排序: 2R,} j@  
=_BHpgL  
package org.rut.util.algorithm.support; RYCiO,+  
X7-*`NI^  
import org.rut.util.algorithm.SortUtil; w.58=Pr  
M *w{PjU  
/** DcBAncsK  
* @author treeroot GFLat  
* @since 2006-2-2 *_I`{9~'  
* @version 1.0 }I uqB*g[t  
*/ ]:LlOv$  
public class BubbleSort implements SortUtil.Sort{ LTS{[(%  
0fX` >-X  
/* (non-Javadoc) s? ;8h &]=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) + Fo^NT  
*/ o3+s.7 "  
public void sort(int[] data) { J|{50?S{^  
int temp; v|~=rvXFC  
for(int i=0;i for(int j=data.length-1;j>i;j--){ EGgw#JAi#t  
if(data[j] SortUtil.swap(data,j,j-1); rzHBop-8  
} c=+%][21  
} kCD] &  
} PP$2s]{  
} wG MhKZE  
W7 A!QS  
} g]Y%c73  
b?OA|JqX  
选择排序: mW!n%f  
=YVxQj  
package org.rut.util.algorithm.support; GdUsv  
bv h#Q_  
import org.rut.util.algorithm.SortUtil; 67&IaDts  
gmH`XKi\  
/** :(ql=+vDb4  
* @author treeroot xltN-<n7  
* @since 2006-2-2 [- 92]  
* @version 1.0 ]QR]#[Tn'  
*/ L&s~j/ pR  
public class SelectionSort implements SortUtil.Sort { @!oN]0`F;  
V0 {#q/q  
/* @yb'h`f]  
* (non-Javadoc) jj2=|)w$3  
* Uf+y$n-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mD7NQ2:wA  
*/ LE{@J0r#n  
public void sort(int[] data) { !yj1X Ar  
int temp; _Jg#T~  
for (int i = 0; i < data.length; i++) { %[KnpJ{\  
int lowIndex = i; 7r?,wM  
for (int j = data.length - 1; j > i; j--) { M887 Q'HSi  
if (data[j] < data[lowIndex]) { e@V J-s  
lowIndex = j; ]T/%Bau  
} wN'S+4  
} 5'f_~>1Wt  
SortUtil.swap(data,i,lowIndex); ]t!v`TH  
} MkFWZ9c3  
} l-W)? d  
*A!M0TK?i,  
}  "2%R?  
"Cxj_V@\  
Shell排序: :tO?+1  
t)8c rX}P  
package org.rut.util.algorithm.support; eD7\,}O  
MHWc~@R  
import org.rut.util.algorithm.SortUtil; <H] PP6_g:  
Y_faqmZ 9]  
/** vM5I2C3_>!  
* @author treeroot XOqHzft h6  
* @since 2006-2-2 i| cA)  
* @version 1.0 P\WHM(  
*/ l+6@,TY1U  
public class ShellSort implements SortUtil.Sort{ v,ecNuy*d  
o7+<sL  
/* (non-Javadoc) zx "EAF{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +Q_xY>ej  
*/ $#e}9g.  
public void sort(int[] data) { !-qk1+<h  
for(int i=data.length/2;i>2;i/=2){ jS3@Z?x?*  
for(int j=0;j insertSort(data,j,i); =>Ae]mi 7  
} zQ<&[Tuwa  
} kKbbsB  
insertSort(data,0,1); P[H`]q|  
} xF) .S@  
#|769=1  
/** {DvWa|  
* @param data vr47PM2al  
* @param j  A|IPQ=  
* @param i "e\73?P  
*/ oIE(`l0l  
private void insertSort(int[] data, int start, int inc) { $(J)F-DB i  
int temp; ArX*3  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); (1{OQ0N+x  
} Jnt r"a-4  
} gDfM}2]/  
} L}8 }Pns?&  
&C,]c#-+  
} T;3~teVYB  
PK?}hz  
快速排序: O{]}{Ss  
.*EP$pc  
package org.rut.util.algorithm.support; N]c:8dOj  
5.0;xz}#y  
import org.rut.util.algorithm.SortUtil; <0`"vPU  
R'K /\   
/** E.VEW;=  
* @author treeroot N9)ERW2`*  
* @since 2006-2-2 Z-U3Tr SI  
* @version 1.0 @J@bD+Q+0  
*/ I GcR5/3  
public class QuickSort implements SortUtil.Sort{ d9 8pv%  
S!}pL8OE  
/* (non-Javadoc) gJOswN;([  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #@5 jOi  
*/ dj0D u^ v4  
public void sort(int[] data) { ^eYJ7&t  
quickSort(data,0,data.length-1); WWTJ%Rd|  
} p|*b] 36  
private void quickSort(int[] data,int i,int j){ 8{Svax(  
int pivotIndex=(i+j)/2; ~>$(5 s2  
file://swap N) z] F9Kg  
SortUtil.swap(data,pivotIndex,j);  [7)#3  
`+r5I5  
int k=partition(data,i-1,j,data[j]); BT{({3  
SortUtil.swap(data,k,j); R?%|RCht1  
if((k-i)>1) quickSort(data,i,k-1); uoBPi[nK  
if((j-k)>1) quickSort(data,k+1,j); RzSN,bL R  
LyXABQ]  
} naB[0I& N  
/** q%^gG03.  
* @param data }KkH7XksF  
* @param i z<P#dj x  
* @param j 2I39fZa  
* @return l}c<eEfOy"  
*/ 1-gX=8]]  
private int partition(int[] data, int l, int r,int pivot) { ~yf5$~Z  
do{ {k~$\J?.  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 1r w>gR  
SortUtil.swap(data,l,r); !*#=7^#  
} Bp6Evi  
while(l SortUtil.swap(data,l,r); +~/zCJ;F  
return l; N4 mQN90t  
} j({L6</x  
CGg6nCB  
} uTJ?@ ^nq  
QU4'x4YS  
改进后的快速排序: Yc5$915  
KoXXNJax  
package org.rut.util.algorithm.support; %r,2ZLZ  
C,z]q$4  
import org.rut.util.algorithm.SortUtil; pcl _$2_  
SoY&R=  
/** F;NZJEy  
* @author treeroot bKaV]Uy  
* @since 2006-2-2 %yrP: fg/  
* @version 1.0 U&a]gkr  
*/ F^~#D, \  
public class ImprovedQuickSort implements SortUtil.Sort { r#~6FpFVK^  
bU,& |K/  
private static int MAX_STACK_SIZE=4096; Q\z*q,^R  
private static int THRESHOLD=10; xO@OkCue  
/* (non-Javadoc) f3h9CV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aH#|LrdJ  
*/ 5astv:p,P  
public void sort(int[] data) { ]- `{kX  
int[] stack=new int[MAX_STACK_SIZE]; sR0nY8@F  
\^:f4ZT  
int top=-1; U5PCj ]-Xt  
int pivot; v>P){VT  
int pivotIndex,l,r; >) ^!gz8  
)G|U B8]  
stack[++top]=0; cK } Qu  
stack[++top]=data.length-1; {gn[ &\  
5VcYdu3  
while(top>0){ 2gv(`NKYE  
int j=stack[top--]; &pAT  
int i=stack[top--]; 8| /YxF<  
J{ Vl2P?@  
pivotIndex=(i+j)/2; DQ}]'*@?  
pivot=data[pivotIndex]; U#P#YpD;==  
f<'C<xnf  
SortUtil.swap(data,pivotIndex,j); w?C\YKF7  
lb('r"*.  
file://partition /P%:u0fX,  
l=i-1; 4c yv 8  
r=j; ]9:G3vq  
do{ @mazwr{B  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); P;/T`R=Vr"  
SortUtil.swap(data,l,r); $b$D[4  
} Kna'5L5"  
while(l SortUtil.swap(data,l,r); +1%6-g4 "  
SortUtil.swap(data,l,j); 3PGyqt(   
CAA~VEUL  
if((l-i)>THRESHOLD){ B+LNDnjO]  
stack[++top]=i; @:@rks&  
stack[++top]=l-1; AQ5v`xE4  
} T_-MSXhA  
if((j-l)>THRESHOLD){ yN.D(ZwF:  
stack[++top]=l+1; ]lY9[~ v  
stack[++top]=j; *Y ZLQT  
} ihVQ,Cth  
K/-D 5U  
} u/f&Wq/  
file://new InsertSort().sort(data); =.c"&,c?L  
insertSort(data); Xn=fLb(  
} i]z i[Zo$  
/** ?+\,a+46P_  
* @param data CmOb+:4@K  
*/ _1'Pb/1  
private void insertSort(int[] data) { %-Z~f~<?  
int temp; cw.7YiU  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); cIp h$@  
} $5r,Q{;$  
} A2d2V**Z  
} v3Yj2LSqx  
3D0I5LF&  
} &?6w 2[}  
vNbA/sM  
归并排序: cG:`Zj~4  
M'iKk[Hjfx  
package org.rut.util.algorithm.support; G m! ]   
DG=Ap:sl*$  
import org.rut.util.algorithm.SortUtil; 4#q JX)/  
h6i{5\7.  
/** "S:N- Tf%U  
* @author treeroot H)Ge#=;ckQ  
* @since 2006-2-2 ;g jp&g9Q  
* @version 1.0 AtDrQ<>y'  
*/ (K6S tNtN  
public class MergeSort implements SortUtil.Sort{ ;[ueNP%*y|  
rgKn=8+a  
/* (non-Javadoc) FOi`TZ8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Zd ,=  
*/ K3DJ"NJ<Ji  
public void sort(int[] data) { {2r7:nvR  
int[] temp=new int[data.length]; ]H~,K]@.  
mergeSort(data,temp,0,data.length-1); I;H9<o5  
} {1|7N GQ  
>r3< O=Z7  
private void mergeSort(int[] data,int[] temp,int l,int r){ QL18MbfqP  
int mid=(l+r)/2; ZS]f+}0/}  
if(l==r) return ; e622{dfVS  
mergeSort(data,temp,l,mid); &Ld8Z9IeFp  
mergeSort(data,temp,mid+1,r); ^\jX5)2{  
for(int i=l;i<=r;i++){ PSS/JFZ^  
temp=data; Gw^=kzh  
} a&Du5(r;!  
int i1=l; \'Kj.EO{?$  
int i2=mid+1; yuDd% 1k  
for(int cur=l;cur<=r;cur++){ %5?-g[  
if(i1==mid+1) 4^_Au^8R(  
data[cur]=temp[i2++]; 5G;^OI!g  
else if(i2>r) [(EH  
data[cur]=temp[i1++]; }A/&]1GWk  
else if(temp[i1] data[cur]=temp[i1++]; <|Eby!KXR  
else eAKQR  
data[cur]=temp[i2++]; 14!a)Ijl  
} M;V#Gm  
} DeQ'U!?+N  
-01 1U!  
} 6-14Htsk6  
+{i "G,3  
改进后的归并排序: )"jn{%/t  
X]U"ru{1q  
package org.rut.util.algorithm.support; Z)T@`B6  
aDvO(C  
import org.rut.util.algorithm.SortUtil; o\;"|O}  
j{Jc6U  
/** T^;Jz!e  
* @author treeroot <&EO=A  
* @since 2006-2-2 )X!DCL:16  
* @version 1.0 !XA%[u  
*/ V3~a!k  
public class ImprovedMergeSort implements SortUtil.Sort {  zn;Hs]G  
pXj/6+^  
private static final int THRESHOLD = 10; ~K$"PK s3  
7a]Zws  
/* G[<[#$(  
* (non-Javadoc) $F`<&o  
* 3/IWO4?_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  )P9{47  
*/ 1L=Qg4 H  
public void sort(int[] data) { xnuv4Z}]t  
int[] temp=new int[data.length]; |U$de2LF  
mergeSort(data,temp,0,data.length-1); Q()RO*9  
} ~muIi#4  
vV\F^  
private void mergeSort(int[] data, int[] temp, int l, int r) { Q'Kik5I  
int i, j, k; Re,$<9V  
int mid = (l + r) / 2; NuS|X   
if (l == r) iraRB~  
return; h[ZN >T  
if ((mid - l) >= THRESHOLD) cYWy\+  
mergeSort(data, temp, l, mid); BXK::M+  
else CX ]\Q-y  
insertSort(data, l, mid - l + 1); JGO$4DK-1  
if ((r - mid) > THRESHOLD) 5ih"Nds[H  
mergeSort(data, temp, mid + 1, r); <X I35\^  
else Y K?*7  
insertSort(data, mid + 1, r - mid); 3 +8"  
F`BgKH!  
for (i = l; i <= mid; i++) { |`Oa/\U  
temp = data; Ad`[Rt']kI  
} KIAe36.~  
for (j = 1; j <= r - mid; j++) { bDFCZH-:'O  
temp[r - j + 1] = data[j + mid]; ? __aVQ7  
} X# kjt )W  
int a = temp[l]; igj={==m  
int b = temp[r]; !,6v=n[Nz  
for (i = l, j = r, k = l; k <= r; k++) { dp[w?AMhM9  
if (a < b) { 4I#eC#"  
data[k] = temp[i++]; C>:/(O  
a = temp; Hr<C2p^a  
} else { wSJ]3gJM`  
data[k] = temp[j--]; l\=-+'Y  
b = temp[j]; SA(UD   
} \Sw+]pr~  
} ;la#Vf:]  
} 7dlKdKH  
hM36QOdm  
/** $['7vcB^  
* @param data orB8Q\p'  
* @param l DD@)z0W  
* @param i e:$7^Y,U/  
*/ 'Wf?elB+  
private void insertSort(int[] data, int start, int len) { 0tW<LR-}E  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); !O F?xW  
} yWv<A^C &  
} f E.L  
} |ilv|UV  
} &$b\=  
uO ?Od  
堆排序: 43J\8WBn@  
SY$J+YBLM  
package org.rut.util.algorithm.support; (@KoqwVWc  
"xDx/d8B  
import org.rut.util.algorithm.SortUtil; |-(IJG#)  
N>A{)_k3  
/** *?^Z)C>  
* @author treeroot ]3O 4\o  
* @since 2006-2-2 CYPazOfj  
* @version 1.0 " K 8&{=  
*/ KMK&[E#r  
public class HeapSort implements SortUtil.Sort{ ]DC;+;8Jc  
4#^'lKIx  
/* (non-Javadoc) WCuzV7tw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )YzHk ;(  
*/ Sc1+(z  
public void sort(int[] data) { k]SAJ~bS|  
MaxHeap h=new MaxHeap(); =ze FK_S!  
h.init(data); f {y]  
for(int i=0;i h.remove(); zH)cU%I@.  
System.arraycopy(h.queue,1,data,0,data.length); -ajM5S=d*  
} "t[M'[ `C  
.e`,{G(5q7  
private static class MaxHeap{ M11"<3]D  
<91t`&aWW  
void init(int[] data){ Ni2]6U  
this.queue=new int[data.length+1];  20I4r  
for(int i=0;i queue[++size]=data; V19e>  
fixUp(size); s<A*[  
} LXHwX*`Y  
} T*h!d(  
SU?wFCGT%  
private int size=0; Y%<`;wK=^  
v~ ^ks{  
private int[] queue; `IEq@Wr#$!  
kWB, ;7  
public int get() { 9pWi.J  
return queue[1]; Dn~Z SrJ  
} +yzcx3<  
BJ~ ivT<  
public void remove() { + $>N]1  
SortUtil.swap(queue,1,size--); ]e^R@w  
fixDown(1); wA?@v|,dZ  
}  X ?tj$  
file://fixdown \r)%R5_CQ  
private void fixDown(int k) { H76E+AY  
int j; }o-|8P:Y  
while ((j = k << 1) <= size) { ]#F q>E  
if (j < size %26amp;%26amp; queue[j] j++; Rr%tbt.sE  
if (queue[k]>queue[j]) file://不用交换 Tdg6kkJ  
break; $fj])>=H  
SortUtil.swap(queue,j,k); iJ}2"i7M  
k = j; Yt -W1vl  
} nz^nptw  
} *5 e<\{!  
private void fixUp(int k) { {5>3;.  
while (k > 1) { f2NA=%\  
int j = k >> 1; / T ,zZ9=  
if (queue[j]>queue[k]) aC`Li^  
break; DL,[k (  
SortUtil.swap(queue,j,k); &GuF\wJ{7  
k = j; S#k{e72 *  
} Y+FP   
} XM$GQn]B  
qk&gA}qF  
} (wife#)~  
>;,gGH  
} qmEoqU  
=nzFd-P  
SortUtil: ~P/]:=  
{(;B5rs  
package org.rut.util.algorithm; ~x'zX-@rC  
|"Z-7@/k$i  
import org.rut.util.algorithm.support.BubbleSort; o5P&JBX<  
import org.rut.util.algorithm.support.HeapSort; CJp-Y}fGEA  
import org.rut.util.algorithm.support.ImprovedMergeSort; 6J\q`q(W(  
import org.rut.util.algorithm.support.ImprovedQuickSort; pw=F' Y@N  
import org.rut.util.algorithm.support.InsertSort; q3+I<qsAz  
import org.rut.util.algorithm.support.MergeSort; pajy#0 U  
import org.rut.util.algorithm.support.QuickSort; 8 }-7{  
import org.rut.util.algorithm.support.SelectionSort; yxvjg\!&  
import org.rut.util.algorithm.support.ShellSort; ~ 7}]  
UeA2c_ 5  
/** 6GzzG P^  
* @author treeroot p5-<P?B  
* @since 2006-2-2 PK+ x6]x  
* @version 1.0 SiV*WxQe  
*/ UT4f (Xo  
public class SortUtil { ^sV|ck  
public final static int INSERT = 1; 8b7;\C~$p  
public final static int BUBBLE = 2; N!L'W\H,  
public final static int SELECTION = 3; r{S=Z~J  
public final static int SHELL = 4; ^>^ \CP]  
public final static int QUICK = 5; dQ<(lzS~  
public final static int IMPROVED_QUICK = 6; KaW~ERx5  
public final static int MERGE = 7; ,E?4f @|X  
public final static int IMPROVED_MERGE = 8; xQo~%wW,?  
public final static int HEAP = 9; E_3r[1l  
>$uUuiyL4  
public static void sort(int[] data) {  %}h`+L  
sort(data, IMPROVED_QUICK); b66R}=P l  
} b+Vi3V  
private static String[] name={ J)*8|E9P  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ?L\z}0#  
}; hM>*a!)U  
\5hw9T&[B  
private static Sort[] impl=new Sort[]{ {2:d` fqD  
new InsertSort(), BC({ EE~R)  
new BubbleSort(), 4%7s259%  
new SelectionSort(), E*k([ZL  
new ShellSort(), ~C| ,b"  
new QuickSort(), BFh$.+D  
new ImprovedQuickSort(), \f"1}f  
new MergeSort(), ;&kn"b}G;  
new ImprovedMergeSort(), m gVML&^  
new HeapSort() K_#UZA< Y  
}; B\[-fq  
~^7r?<aKc  
public static String toString(int algorithm){ .&iN(Bd  
return name[algorithm-1]; Q#pnj thM  
} dIJGB==  
-k{ Jp/-D  
public static void sort(int[] data, int algorithm) { q- :4=vkn  
impl[algorithm-1].sort(data); wyw<jH  
} 0`n 5x0R  
7Z0/(V.-  
public static interface Sort { C[8KlD  
public void sort(int[] data); ,|pp67  
} kA^A mfba  
$<OhGk-  
public static void swap(int[] data, int i, int j) { v[&'k\  
int temp = data; fHfY}BQS  
data = data[j]; "8HE^Po/pn  
data[j] = temp; tpYa?ZCM  
} <%KUdkzEP  
} Qq3fZ=  
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3+5=?,请输入中文答案:八 正确答案:八