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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。 j<PpCL_8%  
插入排序: <!a%GI  
DTN)#G CtF  
package org.rut.util.algorithm.support; f\X7h6k8{  
E HH+)mlo  
import org.rut.util.algorithm.SortUtil; E5Zxp3N  
/** P;V5f8r?  
* @author treeroot l|L ]==M  
* @since 2006-2-2 VpyqVbx1  
* @version 1.0 &pFP=|Pq  
*/ %d^ =$Q  
public class InsertSort implements SortUtil.Sort{ LA4,o@V`  
jn._4TQ*}  
/* (non-Javadoc) d Z P;f^^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `%$l b:e  
*/ 8Y P7'Fz  
public void sort(int[] data) { c +N\uG4  
int temp; !n`Y^  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); xY@<<  
} J|@kF!6  
} ftRzgW);  
} 7R#$Hm  
2B[I- K s  
} 'tJ@+(tqw  
HSlAm&Y\  
冒泡排序: I;UCKoFT  
I!u fw\[  
package org.rut.util.algorithm.support; bF c %  
ve*m\DU  
import org.rut.util.algorithm.SortUtil; & d@N3y  
@WnW @'*F  
/** H:4? sR3  
* @author treeroot gV;9lpZ2  
* @since 2006-2-2 H|s,;1#  
* @version 1.0 v@Bk)Z  
*/ +P|Z1a -jB  
public class BubbleSort implements SortUtil.Sort{ KA{ JSi  
u iR[V~  
/* (non-Javadoc) R=<uf:ca  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G~{#%i  
*/ SGUZ'}  
public void sort(int[] data) { Z ItS(o J.  
int temp; -m_H]<lWZ  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 8^5@J) R8  
if(data[j] SortUtil.swap(data,j,j-1); 2+}hsGnp  
} LLd5Z44v  
} *DuP~8  
} Lem:zXj  
} u69fYoB'  
Wq"^{  
} ,A;wLI  
VL8yL`~zc.  
选择排序: 3) _(t.$D  
@  Br?  
package org.rut.util.algorithm.support; R@lA5w  
qU+q Y2S:  
import org.rut.util.algorithm.SortUtil; YjzGF=g#  
cb`ik)=K%  
/** A9kn\U92  
* @author treeroot {"hyr/SKd  
* @since 2006-2-2 -jcgxQH53  
* @version 1.0 FSHC\8siS  
*/ a n|bzG  
public class SelectionSort implements SortUtil.Sort { qV:TuR-|w  
i ?]`9z  
/* }q=uI`  
* (non-Javadoc) #8i9@w  
* ]<:qMLg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _g%h:G&^  
*/ hZ UnNQ  
public void sort(int[] data) { :nn(Ndlz9  
int temp; p.x!dt\1kC  
for (int i = 0; i < data.length; i++) { uTRFeO>  
int lowIndex = i; gF~#M1!!  
for (int j = data.length - 1; j > i; j--) { vhL/L?NB$  
if (data[j] < data[lowIndex]) { 7qEc9S@  
lowIndex = j; 04@?Jb1*  
} f1 Zj:3e  
} /m8&E*+T1  
SortUtil.swap(data,i,lowIndex); VZCCMh-  
} K yDPD'  
} yN9setw*,M  
a"whg~  
} e8VtKVcY  
aSQvtv)91  
Shell排序: |s, Add:S  
{:ZsUnzm  
package org.rut.util.algorithm.support; FSA"U9 w<  
ySNXjH Q=  
import org.rut.util.algorithm.SortUtil; cp L'  
]Aa.=  
/** w ?"s6L3  
* @author treeroot <gjA(xT5  
* @since 2006-2-2 v|GDPq  
* @version 1.0 U{Moyj  
*/ 4j}uVGi{e  
public class ShellSort implements SortUtil.Sort{ G&dz<f  
mE"},ksg  
/* (non-Javadoc) |\J! x|xy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Gp}}M Gk  
*/ z1m$8-4  
public void sort(int[] data) { -"/l)1ox,  
for(int i=data.length/2;i>2;i/=2){ #Y<(7  
for(int j=0;j insertSort(data,j,i); TRku(w1f  
} 2sYOO>  
} DH'0#  
insertSort(data,0,1); u8Oo@xf0Fr  
}  9t_N 9@  
BOWR}n!g  
/** `m=u2kxY  
* @param data 9q>rUoK^  
* @param j @%4tWE  
* @param i ,]Q i/m  
*/ Ztj~Q9mu  
private void insertSort(int[] data, int start, int inc) { Z=[?T f  
int temp; !R3ZyZcX  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Y!fgc<]'&  
} xL} ~R7  
} m$80D,3  
} #ByrX\  
sX|bp)Nw  
} 8mv}-;  
*."a>?D~  
快速排序: ]n^TN r7  
T5? eb"  
package org.rut.util.algorithm.support; taqmtXU=(  
Jpr`E&%I6  
import org.rut.util.algorithm.SortUtil; /6nj 4.xxc  
t{o&$s93  
/** Ob m%\h  
* @author treeroot Y(Q!OeC  
* @since 2006-2-2 Vc?=cQ'c  
* @version 1.0 al{}p  
*/ &]P1IQ  
public class QuickSort implements SortUtil.Sort{ =`KV),\  
G_)(?  
/* (non-Javadoc) $\vTiS'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~#nbD-*#  
*/ uJu#Vr:m  
public void sort(int[] data) { 'X/(M<c  
quickSort(data,0,data.length-1); 7MhN>a;A\  
} XS`=8FQ  
private void quickSort(int[] data,int i,int j){ $p~X"f?0  
int pivotIndex=(i+j)/2; {p)=#Jd`.P  
file://swap ;SVAar4r  
SortUtil.swap(data,pivotIndex,j); !1fAW! 8  
'o% .Q x  
int k=partition(data,i-1,j,data[j]); 0)nY- f0  
SortUtil.swap(data,k,j); ,c.(&@  
if((k-i)>1) quickSort(data,i,k-1); ^K`Vqo  
if((j-k)>1) quickSort(data,k+1,j); %xh A2  
K %Qj<{)  
} :?J0e4.]  
/** ,e!9WKJ B  
* @param data {aVL3QU  
* @param i k!= jO#)Rd  
* @param j pjrzoMF  
* @return  jgd^{!  
*/ 2kV{|`1  
private int partition(int[] data, int l, int r,int pivot) { bbAJ5EqL  
do{ j  hr pS  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); n s`njx}C  
SortUtil.swap(data,l,r); <OA[u-ph%S  
} e'L$g-;>4b  
while(l SortUtil.swap(data,l,r); sB'Z9  
return l; &#DKB#.2  
} 6Cz%i 6)  
)]P%=  
} Z Vj  
2%gLq  
改进后的快速排序:  <6[P5>  
?0VETa ~m  
package org.rut.util.algorithm.support; ~$:=hT1  
qe_59'K  
import org.rut.util.algorithm.SortUtil; <WGx 6{  
xYl ScM_~  
/** v*VId l>  
* @author treeroot o.M.zkP a  
* @since 2006-2-2 mmx; Vt$i  
* @version 1.0 . Q$/\E  
*/ )9? ^;HS  
public class ImprovedQuickSort implements SortUtil.Sort { C Ch38qBp  
+VdC g_  
private static int MAX_STACK_SIZE=4096; @-H D9h  
private static int THRESHOLD=10; XX;MoE~MM  
/* (non-Javadoc) (Aw!K`0Y1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q~S3d  
*/ {Bm7'%i  
public void sort(int[] data) { &&er7_Q  
int[] stack=new int[MAX_STACK_SIZE]; j%@wQVxq  
tG}cmK~%  
int top=-1; aH+n]J] =)  
int pivot; 0Er;l|  
int pivotIndex,l,r; CHo(:A.U>  
!3T,{:gyrI  
stack[++top]=0; b0ablVk  
stack[++top]=data.length-1;  %3A~&  
mb_~ "}A  
while(top>0){ o u*`~K|R  
int j=stack[top--]; jg+q{ ^  
int i=stack[top--]; }"o,j>IP  
1KWGQJ%%s  
pivotIndex=(i+j)/2; R#w9%+  
pivot=data[pivotIndex]; Y~C;M6(P  
q>H f2R  
SortUtil.swap(data,pivotIndex,j); [G>U>[u|  
.L'eVLQe  
file://partition :3$-Qv X  
l=i-1; +ZU@MOni  
r=j; \qB:z7I2  
do{ IolKe:'>@  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); HMrl!;:  
SortUtil.swap(data,l,r); f{j (H?5  
} :jU u_s}  
while(l SortUtil.swap(data,l,r); _q /UDf1  
SortUtil.swap(data,l,j); 6nP-IKL  
NNM+Z:  
if((l-i)>THRESHOLD){ @ - _lw  
stack[++top]=i; A:5B6Z  
stack[++top]=l-1; #mvOhu  
} ,[t>N>10TH  
if((j-l)>THRESHOLD){ v#WD$9QWs  
stack[++top]=l+1; T>\ r}p  
stack[++top]=j; Sm(t"#dp  
} F3 z:|sTqc  
"- XJZ;5  
} NwB;9ZhZ  
file://new InsertSort().sort(data); ^ua8Ya  
insertSort(data); 2\, h "W(  
} lhRo+X#G  
/** w=MiJr#3^  
* @param data Q@HW`@i  
*/ 8M9}os  
private void insertSort(int[] data) { $yY\[C  
int temp; i$b Het  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); u#sbr8Y  
} b2p;-rv  
}  q{*4BL'  
} 6}xFE]Df-Y  
^g eC?m  
} }:f \!b  
;S_\- ]m&g  
归并排序: rW<sQ0   
$b=4_UroS  
package org.rut.util.algorithm.support; s`E^1jC  
u^NZsuak  
import org.rut.util.algorithm.SortUtil; dOfEEqPI  
&Y/Myh[P  
/** Fo86WP}  
* @author treeroot nL]-]n;  
* @since 2006-2-2 @& vtY._  
* @version 1.0 2^.qKY@g@  
*/ ZN]LJ4|xu  
public class MergeSort implements SortUtil.Sort{ Am&PH(}L  
?.%'[n>P  
/* (non-Javadoc) 4EtP|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K)!Nf.r$9  
*/ %e,X7W`'2  
public void sort(int[] data) { VM[U&g<8n  
int[] temp=new int[data.length]; @ 4%a  
mergeSort(data,temp,0,data.length-1); 3+` <2TP  
} "spAYk\  
5^W},:3R  
private void mergeSort(int[] data,int[] temp,int l,int r){ Sgy_?Y  
int mid=(l+r)/2; Sy?O(BMo  
if(l==r) return ; +_h1JE_}D  
mergeSort(data,temp,l,mid); L dyTB@  
mergeSort(data,temp,mid+1,r); _xVtB1@kLM  
for(int i=l;i<=r;i++){ 1s@%q <  
temp=data; Y::I_6[eV  
} KNZN2N)wR  
int i1=l; ` e~nn  
int i2=mid+1; ]l.qp5eQ  
for(int cur=l;cur<=r;cur++){ t:?8I9d  
if(i1==mid+1) Mc #w:UH[  
data[cur]=temp[i2++]; .tny"a&  
else if(i2>r) 4LfD{-_uW  
data[cur]=temp[i1++]; NrrnG]#p1  
else if(temp[i1] data[cur]=temp[i1++]; ;#F7Fp*U  
else lm 1Mz  
data[cur]=temp[i2++]; o;D[ F  
} /v^1/i  
} Aa#WhF  
9N kr=/I"P  
} ^Cm9[1p  
2kS]:4)T  
改进后的归并排序: 5u=(zg  
:UrS@W^B  
package org.rut.util.algorithm.support; j(*ZPo>oD  
D:yj#&I  
import org.rut.util.algorithm.SortUtil; /y.+N`_  
OE4hG xG  
/** 1dgy-$H~  
* @author treeroot 6zfi\(fop  
* @since 2006-2-2 t"]+}]O  
* @version 1.0 t|ih{0  
*/ _3lci  
public class ImprovedMergeSort implements SortUtil.Sort { |*w}bT(PfR  
`?H yDny  
private static final int THRESHOLD = 10; uR:@7n  
@},25"x)  
/* Q{~WWv  
* (non-Javadoc) vA r fsgk  
* =d{B.BP(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1oSrhUTy  
*/ $%3"@$  
public void sort(int[] data) { :s}6a23  
int[] temp=new int[data.length]; v9t26>{~  
mergeSort(data,temp,0,data.length-1); [1\k'5rp  
} eA$wJ$*   
#EO@<> I  
private void mergeSort(int[] data, int[] temp, int l, int r) { A=z+@b6  
int i, j, k; #nv =x&g  
int mid = (l + r) / 2; ("7rjQjRz  
if (l == r) ^D=1%@l?#  
return; >4.K>U?0FC  
if ((mid - l) >= THRESHOLD) el;eyGa  
mergeSort(data, temp, l, mid); #Pf?.NrTn  
else %}nNwuJ  
insertSort(data, l, mid - l + 1); A=(<g";m  
if ((r - mid) > THRESHOLD) 'fqX^v5n  
mergeSort(data, temp, mid + 1, r); *x;&fyR  
else +@ FM~q  
insertSort(data, mid + 1, r - mid); ]hPu  
/ehmy(zL  
for (i = l; i <= mid; i++) { ^4\h Z  
temp = data; c8^M::NI  
} $@[`v0y*  
for (j = 1; j <= r - mid; j++) { c89+}]mGq  
temp[r - j + 1] = data[j + mid]; xDU{I0M  
} 4NY}=e5  
int a = temp[l]; DhVF^=x$  
int b = temp[r]; R@+%~"Z  
for (i = l, j = r, k = l; k <= r; k++) { X &z|im'd  
if (a < b) { /mM#nS  
data[k] = temp[i++]; o<Esh;;*nm  
a = temp; -Dx_:k|k  
} else { \x,q(npHi  
data[k] = temp[j--]; T;f`ND2fY  
b = temp[j]; 94>EA/+Ek  
} i1OF @~?  
} E=-ed9({:  
} cQ?eL,z  
7j ]d{lD  
/** +4N7 _Y  
* @param data mip2=7M|C  
* @param l r\+0J`  
* @param i 6dCS Gb  
*/ /3VSO"kcZ  
private void insertSort(int[] data, int start, int len) { mO6rj=L^  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 1^x "P#u  
} #s\HiO$BT  
} C3XB'CL6  
} [%);N\o2Y  
} P0B`H7D  
Q=,6W:j  
堆排序: $y0[AB|V  
k"kGQk4  
package org.rut.util.algorithm.support; %|tDb  
e6 R<V]g  
import org.rut.util.algorithm.SortUtil; eVXlQO  
2~*J<iO&l  
/** xksd&X:  
* @author treeroot . paA0j  
* @since 2006-2-2 1kd\Fq^z$  
* @version 1.0 ] WsQ=  
*/ ]~Su  
public class HeapSort implements SortUtil.Sort{ Aa.eu=@I  
*t)Y@=k3>  
/* (non-Javadoc) J@Qt(rRxi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SWX[|sjdB  
*/ ?=bqya"Y  
public void sort(int[] data) { va>u1S<lO  
MaxHeap h=new MaxHeap(); 6/%dD DU  
h.init(data); [eWZ^Eh"I  
for(int i=0;i h.remove(); VIXY?Ua  
System.arraycopy(h.queue,1,data,0,data.length); e={X{5z0  
} xzZ2?z Wi  
T uk:: .jD  
private static class MaxHeap{ qy9RYIfZ  
rwJCVkF  
void init(int[] data){ lR[]A  
this.queue=new int[data.length+1]; K~C6dy  
for(int i=0;i queue[++size]=data; P1r)n{;  
fixUp(size); vky@L!&,  
} D <16m<b  
} ,esryFRG  
K4G43P5q`  
private int size=0; kE8\\}B7  
2ncD,@ij  
private int[] queue; rT&rv^>f  
0Z m^6T  
public int get() { gXNlnh%?S  
return queue[1]; \W,,@ -  
} >l0y ss)I  
`/"rs@  
public void remove() { 17 k9h?s*  
SortUtil.swap(queue,1,size--); ccdP}|9e  
fixDown(1); :Zs i5>MT  
} 3.t j%+  
file://fixdown k%|Sl>{Ir  
private void fixDown(int k) { a_GnN\kX^Z  
int j; ]g3RVA%\l  
while ((j = k << 1) <= size) { 5 $vUdDTg  
if (j < size %26amp;%26amp; queue[j] j++; 6SJryf~w  
if (queue[k]>queue[j]) file://不用交换 @(m+B\  
break; @X|Mguq5  
SortUtil.swap(queue,j,k); u!B6';XY  
k = j; KE~l#=S  
} $+P6R`K  
} 4kNiS^h  
private void fixUp(int k) { MJzY|  
while (k > 1) { L&I8lG  
int j = k >> 1; I*SrK Zb  
if (queue[j]>queue[k]) :rBPgrt  
break; m\0Xh*  
SortUtil.swap(queue,j,k); tbH` VD"u  
k = j; zc`gm~@  
} -J06H&/k  
} d :a*;F  
RCL}bE  
} -](NMRqfN  
9i=HZ\s3  
} 6w"_sK?  
Ue=Je~Ri;9  
SortUtil: +=V[7^K;  
vGX}zzto  
package org.rut.util.algorithm; $$5E+UDOs  
Ik\n/EE  
import org.rut.util.algorithm.support.BubbleSort; +D@+j  
import org.rut.util.algorithm.support.HeapSort; S.I3m-  
import org.rut.util.algorithm.support.ImprovedMergeSort; mnG\qsKNLK  
import org.rut.util.algorithm.support.ImprovedQuickSort; BQ;F`!Hx?  
import org.rut.util.algorithm.support.InsertSort; >, 9R :X(  
import org.rut.util.algorithm.support.MergeSort; tQ@%3`  
import org.rut.util.algorithm.support.QuickSort; _oILZ,  
import org.rut.util.algorithm.support.SelectionSort; r'bPSu,  
import org.rut.util.algorithm.support.ShellSort; UqA<rW  
)Z=S'm k4_  
/** 7eR%zNDa  
* @author treeroot q;)+O#CR  
* @since 2006-2-2 pnpx`u;  
* @version 1.0 ;h-W&i7  
*/ L,+m5wKj[  
public class SortUtil { }Z,xF`  
public final static int INSERT = 1; 0p31C7!  
public final static int BUBBLE = 2; e!B>M{  
public final static int SELECTION = 3; ^E#i5d+'N  
public final static int SHELL = 4; Od,P,t9  
public final static int QUICK = 5; *B3 4  
public final static int IMPROVED_QUICK = 6; ,u<oAI`  
public final static int MERGE = 7; gB)Cmw*  
public final static int IMPROVED_MERGE = 8; k vQ] }`a  
public final static int HEAP = 9; V#P`FX  
eVetG,["  
public static void sort(int[] data) { 6z'3e\x  
sort(data, IMPROVED_QUICK); r3BQo[ 't  
} y"L7.B  
private static String[] name={ og~Uv"&?T  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Po1/_# mu  
}; 0XWhSrHM  
mH,L,3R;R  
private static Sort[] impl=new Sort[]{ Q`B K R]/  
new InsertSort(), 6/=0RTd  
new BubbleSort(), b)(rlX  
new SelectionSort(), LFskNF0X  
new ShellSort(), # GbfFoE  
new QuickSort(), nkxv,_)ZT  
new ImprovedQuickSort(), "8#EA<lsS  
new MergeSort(), JnY.]:  
new ImprovedMergeSort(), KB$S B25m  
new HeapSort() 6]^~yby P  
}; QB"Tlw(  
0|=,!sY  
public static String toString(int algorithm){ `mE>h4  
return name[algorithm-1]; K-2oSS56  
} DfsPg':z  
QSNPraT  
public static void sort(int[] data, int algorithm) { !j8 DCVb  
impl[algorithm-1].sort(data); QE Q/  
} ng6".u9  
]=28s *@  
public static interface Sort { iU/v; T(  
public void sort(int[] data); f =MP1q[  
} xW. ~Jt  
_)%Sz"g^Ix  
public static void swap(int[] data, int i, int j) { .ED8b5t|  
int temp = data; A?+0Ce&qL  
data = data[j]; `bJ?8~ 8 *  
data[j] = temp; k E},>+W+  
} U^&,xz$Cg  
} k5@PZFV  
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