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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。 4R8W ot  
插入排序: +0)zB;~7  
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package org.rut.util.algorithm.support; (";{@a %  
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import org.rut.util.algorithm.SortUtil; c"<bq}L7S  
/** ww0m1FzX  
* @author treeroot fBZ\,  
* @since 2006-2-2 3aK/5)4|B  
* @version 1.0 BAUo`el5  
*/ !uno!wUIYd  
public class InsertSort implements SortUtil.Sort{ `;'fCO!  
[>pqf  
/* (non-Javadoc) HJV8P2f8`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QqS?-   
*/ "-tTN  
public void sort(int[] data) { KR4vcI[4  
int temp; G\HU%J  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); r]0UF0#  
} [u=DAk?8  
} K9BoIHo  
} TAXl73j_CY  
~582'-=+  
} $1(FN+ M b  
Ob|[/NN  
冒泡排序: TLkJZ4}?Q  
+.p$Yi`  
package org.rut.util.algorithm.support; 6BPZ2EQ  
(ex^=fv  
import org.rut.util.algorithm.SortUtil; guD?~-Q  
lQ}e"#<  
/** &dC #nw  
* @author treeroot @3 UVl^T  
* @since 2006-2-2 =XT'D@q~W  
* @version 1.0 wu2AhMGmw  
*/ h/CF^0m"!  
public class BubbleSort implements SortUtil.Sort{ $_.m<  
gUrb&#\X  
/* (non-Javadoc) TF@HwF"#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wq( m%F  
*/ /@*J\0h(-  
public void sort(int[] data) { O>![IH(L  
int temp; 0M?nXHA[  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 8J- ;/  
if(data[j] SortUtil.swap(data,j,j-1); !Qg%d&q.Sx  
} ;[_w&"[6a  
} )~](qLSl  
} ^1%gQ@P  
} M?UlC   
OoFQ@zE7%  
} c0H8FF3  
~'4:{xH  
选择排序: E"[^^<I  
GC3:ZpV`  
package org.rut.util.algorithm.support; [|sKu#yW  
b=#3p  
import org.rut.util.algorithm.SortUtil; ;5*)kX  
!6wbg  
/** OGy/8B2c  
* @author treeroot p,?8s%  
* @since 2006-2-2 N".-]bB  
* @version 1.0 V zx%N.  
*/ S*H :/Ip  
public class SelectionSort implements SortUtil.Sort { bW`@9 =E  
[xXml On!  
/* 6g ,U+~  
* (non-Javadoc) $Xlyc.8YId  
* r|Y|u v0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tk^1Ga3  
*/ VD \pQ.=  
public void sort(int[] data) { h>Z$ n`T  
int temp; r: _- Cj  
for (int i = 0; i < data.length; i++) { cVZCBcKC?  
int lowIndex = i; ZSuMQ32  
for (int j = data.length - 1; j > i; j--) { 3q:-98DT  
if (data[j] < data[lowIndex]) { ifu "e_^  
lowIndex = j; l|-TGjsX  
}  X7sWu{n  
} >4d2IO1\  
SortUtil.swap(data,i,lowIndex); MwxfTH"wi  
} z]k=sk  
} Ne]/ sQ0  
; y#6Nx,:  
} 6TE R Q  
?l_>rSly5  
Shell排序: mu1oD;lQ  
b'$j* N  
package org.rut.util.algorithm.support; ;8~`fK  
XR^VRn6O  
import org.rut.util.algorithm.SortUtil; A a2*f[  
r +] J {k  
/** @o+T<}kWX  
* @author treeroot SnbH`\U"  
* @since 2006-2-2 N(?yOB4gt  
* @version 1.0 %iI0JF*E z  
*/ Z6&s 6MF  
public class ShellSort implements SortUtil.Sort{ :):=KowI  
FhB^E$r%  
/* (non-Javadoc) ]xfAdBi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s,^?|Eo;0  
*/ O0xL;@rBe  
public void sort(int[] data) { x5m .MQ J  
for(int i=data.length/2;i>2;i/=2){ r^P}xGGK  
for(int j=0;j insertSort(data,j,i); "F+ 9xf&r  
} Jkt L|u:k  
} H ^Xw<Z=  
insertSort(data,0,1); DYH-5yX7  
} Z*kGWL  
i:WHql"Kw_  
/** v@k62@;  
* @param data ~?vm97l  
* @param j :~^ec|tp  
* @param i qy@gW@IU  
*/   [E(DGt  
private void insertSort(int[] data, int start, int inc) { -p>KFHj6  
int temp; ewgcpV|spn  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); @2 dp5  
} asR6,k  
} K0]'v>AWr  
} w\;=3C`  
?ZSG4La\  
} &a8#qv"l  
I TJ>[c]x  
快速排序: `sN3iD!@R  
w2~(/RgO  
package org.rut.util.algorithm.support; o lNL|WJ`w  
`hS<F" j  
import org.rut.util.algorithm.SortUtil; 8N(bLGUG  
bF' ~&<c  
/** 76)(G/  
* @author treeroot j:|60hDz^  
* @since 2006-2-2 mf@YmKbp  
* @version 1.0 -3Vx jycY  
*/ ~`hI|i<]  
public class QuickSort implements SortUtil.Sort{ R*TCoEKO  
8N6a=[fv<  
/* (non-Javadoc) ^lu)'z%6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AnPm5i.  
*/ /[[zAq{OA  
public void sort(int[] data) { N)RWC7th{  
quickSort(data,0,data.length-1); _OcgD<  
} }QncTw0  
private void quickSort(int[] data,int i,int j){ 5"y p|Yl  
int pivotIndex=(i+j)/2; S#+G?I3w  
file://swap K4n1#]8i  
SortUtil.swap(data,pivotIndex,j); &tD`~  
?9!tMRb  
int k=partition(data,i-1,j,data[j]); N)  {  
SortUtil.swap(data,k,j); ;lX:EU  
if((k-i)>1) quickSort(data,i,k-1); D{.%Dr?  
if((j-k)>1) quickSort(data,k+1,j); @D"#B@j  
q) /;|h  
} %8$JL=c  
/** ^i-%FY_i5}  
* @param data \9se~tAl3  
* @param i j Xi<ZJ  
* @param j ynM{hN.+H  
* @return o^&; `XOd  
*/ N,'JQch},8  
private int partition(int[] data, int l, int r,int pivot) { (L|SE4  
do{ "MC&!AMv  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); h%+8}uywZ  
SortUtil.swap(data,l,r);  R76'1o  
} <$Uj ~jN  
while(l SortUtil.swap(data,l,r); :`3b|u=KZ  
return l; }jiqUBn%  
} ADv a@P  
6{azzk8  
} 7@EYF  
Yc?taL)  
改进后的快速排序: ,l; &Tb=k  
(G PJ=r  
package org.rut.util.algorithm.support; D{'Na5(  
|,dMF2ADc  
import org.rut.util.algorithm.SortUtil; tt J,rM  
G:WMocyXI'  
/** K!I]/0L  
* @author treeroot `y YgL@Zt  
* @since 2006-2-2 Oku4EJFJ  
* @version 1.0 m3_e]v3{o  
*/ P603P  
public class ImprovedQuickSort implements SortUtil.Sort { FbFUZ^Zj  
aE#ZTc=  
private static int MAX_STACK_SIZE=4096; Q=PaTh   
private static int THRESHOLD=10; U"m!f*a  
/* (non-Javadoc) kP;:s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (= !_ 5l  
*/ XZ|"7as  
public void sort(int[] data) { n#J$=@  
int[] stack=new int[MAX_STACK_SIZE]; ]; ^OY\,  
[b#jw,7  
int top=-1;  b 1[U 9  
int pivot; 5)$U<^uy  
int pivotIndex,l,r; /=e[(5X|O  
sWavxh8A  
stack[++top]=0; ziH2<@  
stack[++top]=data.length-1; j~Gu;%tq  
bq(*r:`"  
while(top>0){ g=U?{<8.m  
int j=stack[top--]; X'?v8\mPK  
int i=stack[top--]; &2xYG{Z  
Jh466; E  
pivotIndex=(i+j)/2; [0&Lvx  
pivot=data[pivotIndex]; &/JnAfmYqt  
}(o/+H4  
SortUtil.swap(data,pivotIndex,j); LG<lZ9+y  
7abq3OK+`  
file://partition =r-Wy.a@  
l=i-1; 3gabk/  
r=j; W^=89I4]  
do{ $\^]MxI  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot));  V'mpl  
SortUtil.swap(data,l,r); 2{V|  
} VsZ_So;  
while(l SortUtil.swap(data,l,r); 3&y u  
SortUtil.swap(data,l,j); 3@"VS_;?  
iL,3g[g  
if((l-i)>THRESHOLD){ ItaJgtsV  
stack[++top]=i; B:mlBSH  
stack[++top]=l-1; .9^;? Ts  
} (B$FX<K3  
if((j-l)>THRESHOLD){ q!ZmF1sU  
stack[++top]=l+1; ]#:xl}'LS  
stack[++top]=j; w x,;  
} 1|. 0]~0  
r?X^*o9  
} .<NXk"\!y  
file://new InsertSort().sort(data); qFs<s<]  
insertSort(data); =~0XdS/1  
} YD+C1*c!  
/** O,OGq0c  
* @param data ;XtDz  
*/ ]cA~%$c89s  
private void insertSort(int[] data) { I9Sh~vTm=u  
int temp; h{JVq72R  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^|K*lI/  
} S}< <jI-z  
} #TSM#Uqe  
} a<o0B{7{BM  
_:K}DU'6  
} jU#%@d6!#  
nb|MHtPX  
归并排序: `nM4kt7  
_$cBI_eA7  
package org.rut.util.algorithm.support; HkV/+ {;S~  
~%}g"|o  
import org.rut.util.algorithm.SortUtil; d:wAI|  
5Y&@ :Y  
/** (qG$u&  
* @author treeroot 4[-9$ r  
* @since 2006-2-2 )Z_i[1V  
* @version 1.0 uB^]5sqfk  
*/ nx +& {hn(  
public class MergeSort implements SortUtil.Sort{ W1!eY,1}  
"Jwz.,Y\  
/* (non-Javadoc) 2kgm)-z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0jzA\$oD  
*/ ]e3nnS1*.  
public void sort(int[] data) { w[+!c-A:H  
int[] temp=new int[data.length]; 5;Z~+$1  
mergeSort(data,temp,0,data.length-1); ""a8eB 6  
} co@8w!W  
.iYgRW=T  
private void mergeSort(int[] data,int[] temp,int l,int r){ @t^ 2/H ?O  
int mid=(l+r)/2; <|_Ey)1 6  
if(l==r) return ; JQ1VCG  
mergeSort(data,temp,l,mid); ?yU#'`q  
mergeSort(data,temp,mid+1,r); a;zcAeX  
for(int i=l;i<=r;i++){ avz 4 &  
temp=data; Iymz2  
} evR=Z\ _  
int i1=l; W6iIL:sp  
int i2=mid+1; GkC88l9z  
for(int cur=l;cur<=r;cur++){ z?aD Oh  
if(i1==mid+1) @gj5'  
data[cur]=temp[i2++]; NAU<?q<)  
else if(i2>r) Xo5L:(?K  
data[cur]=temp[i1++]; i,HAXPi  
else if(temp[i1] data[cur]=temp[i1++]; ,@;<u'1\G  
else [y:LA ~q  
data[cur]=temp[i2++]; \'KzSkC8  
} QezK&iJg  
} ?l(hS\N,  
zN:752d^+r  
} Cf N; `  
<>Im$N ai  
改进后的归并排序: ,rdM{ r  
: L>d]Hn  
package org.rut.util.algorithm.support; re!CF8 q  
QHh#O+by#  
import org.rut.util.algorithm.SortUtil; ~h/U ;Da  
UGMdWq  
/** 0#7 dm9  
* @author treeroot ex1ecPpN  
* @since 2006-2-2 LQjqwsuN{  
* @version 1.0 WDZi @9X_  
*/ ]5\vYk  
public class ImprovedMergeSort implements SortUtil.Sort { x'qgpG}?]  
)'g vaT  
private static final int THRESHOLD = 10; >xjy P!bca  
<b\urtoJ  
/* MI}D%n*  
* (non-Javadoc) qSd $$L^  
* fm* Hk57  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'n no)kQ"  
*/ x,%&[ 6(  
public void sort(int[] data) { S@#L!sT`u  
int[] temp=new int[data.length]; -*A'6%`  
mergeSort(data,temp,0,data.length-1); |3L MVN  
} Q'VS]n  
;'p'8lts  
private void mergeSort(int[] data, int[] temp, int l, int r) { h]#)41y<  
int i, j, k; * y B-N;I  
int mid = (l + r) / 2; O2e "TH3  
if (l == r) y)}aySQK^  
return; :]s] =q&]  
if ((mid - l) >= THRESHOLD) M@\'Y$)Y{  
mergeSort(data, temp, l, mid); ]@>|y2  
else p"@|2a  
insertSort(data, l, mid - l + 1); X`b5h}c  
if ((r - mid) > THRESHOLD) gg(U}L ]:  
mergeSort(data, temp, mid + 1, r); #<o#kJL  
else EHZSM5hu  
insertSort(data, mid + 1, r - mid); "Tv7*3>  
~-+Zu<  
for (i = l; i <= mid; i++) { LDsYr]  
temp = data; qAS^5|(b[  
} Nt8(  
for (j = 1; j <= r - mid; j++) { "x)DE,  
temp[r - j + 1] = data[j + mid]; [XXN0+ /  
} W<Lrfo&=Y]  
int a = temp[l]; g$b*#  
int b = temp[r]; .IXwa,  
for (i = l, j = r, k = l; k <= r; k++) { y#+o*(=fRE  
if (a < b) { ?la_ +;m  
data[k] = temp[i++]; f#5JAR  
a = temp; 8=~>B@'  
} else { ShpnFuH  
data[k] = temp[j--]; lI 1lP 1  
b = temp[j]; lNb\^b  
} ={^#E?  
} oK6lCGM5  
} tOw 0(-:iq  
x8Sq+BY  
/** +b+sQ<w?.  
* @param data  D;]%  
* @param l 7&4,',0VL  
* @param i L|LTsRIq  
*/ arZIe+KW  
private void insertSort(int[] data, int start, int len) { <Xx\F56zp  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); y~7lug  
} TpgBS4q  
} &pm{7nH  
} `qTY  
} >9`ep7  
m+vEs,W.  
堆排序: i7V~LO:gq  
Ao T7sy7  
package org.rut.util.algorithm.support; L])w-  
jhv1 D' >6  
import org.rut.util.algorithm.SortUtil; cqx1NWlY  
}=a4uCE  
/** `Ny8u")=  
* @author treeroot (, "E9.  
* @since 2006-2-2 $8k_M   
* @version 1.0 keskD  
*/ NrcCUZ .:N  
public class HeapSort implements SortUtil.Sort{ LltguNM$  
09Y?!,  
/* (non-Javadoc) |@.<} /  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BA,6f?ktXS  
*/ s.'\&B[  
public void sort(int[] data) { p;$9W+H0  
MaxHeap h=new MaxHeap(); : !3y>bP)  
h.init(data); Nl`ry2"<  
for(int i=0;i h.remove(); C4]%pi  
System.arraycopy(h.queue,1,data,0,data.length); 2< Bv=B  
} S:/RYT"  
1i:g /H  
private static class MaxHeap{ OL5HofgNm  
)H)Udhz  
void init(int[] data){ CDnz &?  
this.queue=new int[data.length+1]; /T[ICd2J  
for(int i=0;i queue[++size]=data; CDj Dhs  
fixUp(size); e"#D){k#  
} 4Z9wzQ>  
} ~+C?][T  
Y,btL'[W  
private int size=0; D^55:\4(  
a +yI2s4Z  
private int[] queue; pm~;:#z7  
N+qLxk  
public int get() { "H<#91^|  
return queue[1]; NxO^VUD  
} <0)ud)~u  
Ch"8cl;Fm  
public void remove() { 8? Wxd65)  
SortUtil.swap(queue,1,size--); -WvgK"k  
fixDown(1); e8mbEC(AK  
} ^!o}>ls['  
file://fixdown (M,VwwN  
private void fixDown(int k) { Ir"Q%>K0f  
int j; m\M+pjz  
while ((j = k << 1) <= size) { o MkY#<Q}  
if (j < size %26amp;%26amp; queue[j] j++; $'YKB8C  
if (queue[k]>queue[j]) file://不用交换 Tw;qY  
break; WwtE=od  
SortUtil.swap(queue,j,k); yr2L  
k = j; \&&(ytL  
} ) Zo_6%  
} 9,f<Nb(\  
private void fixUp(int k) { 7G(f1Y  
while (k > 1) { V}fKV6 v9  
int j = k >> 1; > ' 0 ][~  
if (queue[j]>queue[k]) 6h6?BQSE  
break; wZ8 MhE  
SortUtil.swap(queue,j,k); kN |5 J  
k = j; ]/Yy-T#@  
} &4&33D  
} .#55u+d,  
4z%#ZIy3   
} rn:zKTyhw  
!L. K)9I  
} dP7Vs a+  
?4[Oh/]R  
SortUtil: aq+IC@O  
{lTxB'W@d  
package org.rut.util.algorithm; $>"e\L4Kp  
`1bX.7K43  
import org.rut.util.algorithm.support.BubbleSort; bro  
import org.rut.util.algorithm.support.HeapSort; 3'*%R48P`  
import org.rut.util.algorithm.support.ImprovedMergeSort; hr4ye`c j  
import org.rut.util.algorithm.support.ImprovedQuickSort; Secq^#]8  
import org.rut.util.algorithm.support.InsertSort; xVkTRCh  
import org.rut.util.algorithm.support.MergeSort; {XD/8m(hN|  
import org.rut.util.algorithm.support.QuickSort; 2FIR]@MQd  
import org.rut.util.algorithm.support.SelectionSort; FaE#\Q  
import org.rut.util.algorithm.support.ShellSort; DwmU fZp  
HXfXb ^~  
/** $dh4T";  
* @author treeroot *Ht*)l?  
* @since 2006-2-2 D"XX920$~  
* @version 1.0 \!JS7!+  
*/ EEs-&  
public class SortUtil { WAB0e~e:|Q  
public final static int INSERT = 1; }PQSCl^I  
public final static int BUBBLE = 2; 0GX10*t.  
public final static int SELECTION = 3; 4s~HfxYT  
public final static int SHELL = 4; #CA%]*l*F  
public final static int QUICK = 5; y (nsyA  
public final static int IMPROVED_QUICK = 6; 3<Z'F}lg  
public final static int MERGE = 7; AwXt @!(  
public final static int IMPROVED_MERGE = 8; !Wixs]od   
public final static int HEAP = 9; 9Ue7 ~"=  
%8bzs?QI  
public static void sort(int[] data) { +an^e'  
sort(data, IMPROVED_QUICK); ^{*f3m/  
} 2Za ,4'  
private static String[] name={ w;c#drY7S  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" E {KS a  
}; z_Wm HB  
Yn4)Zhkk  
private static Sort[] impl=new Sort[]{ [ .j]V-61  
new InsertSort(), #PslrA. E  
new BubbleSort(), ]A]Ft!`6z  
new SelectionSort(), n^AP"1l8?0  
new ShellSort(), 7"F|6JP"$c  
new QuickSort(), 4W!\4Va  
new ImprovedQuickSort(), BjyXQ9D  
new MergeSort(), _}zo /kDA  
new ImprovedMergeSort(), z$c&=Q  
new HeapSort() gX$0[ sIS.  
}; p,w|=@=  
B6ed,($&  
public static String toString(int algorithm){ HkdN=q  
return name[algorithm-1]; #7]o6  
} W(2+z5z  
qE0FgqRB  
public static void sort(int[] data, int algorithm) { <mZrR3v'D  
impl[algorithm-1].sort(data); to&N22a$  
} \5Vp6^  
%6A-OF  
public static interface Sort { [A"H/Qztk  
public void sort(int[] data); 'h^-t^:<>b  
} #9$V 08  
&[5n0e[  
public static void swap(int[] data, int i, int j) { `RL,ZoYuu  
int temp = data; 8 "_Bq  
data = data[j]; @ /UOSU  
data[j] = temp; h4aygc  
} `6Ureui2?  
} )W8L91-  
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