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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。 cwuzi;f  
插入排序: RW{y.WhB  
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package org.rut.util.algorithm.support; QC,fyw\  
x~Y{ {  
import org.rut.util.algorithm.SortUtil; H;nEU@>"Z  
/** 'C4cS[1  
* @author treeroot uMx6:   
* @since 2006-2-2 @An}  
* @version 1.0 nw4 I<Q  
*/ N0DzFXp  
public class InsertSort implements SortUtil.Sort{ }!Y=SP1e  
Um}f7^fp^l  
/* (non-Javadoc) LZ34x: ,C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;NOmI+t0w&  
*/ ;,8 )%[  
public void sort(int[] data) { 3CzF@t;5  
int temp; 8`<e\g7-  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >.M>,m\  
} y2W|,=Vd  
} Vwu dNjL  
} fB80&G9  
6ao~f?JZ  
} aFaioE#h(  
xa.tH)R  
冒泡排序: Ul_ 5"3ze  
#M%K82"  
package org.rut.util.algorithm.support; 5JHWt<n{P  
V/3@iOwD  
import org.rut.util.algorithm.SortUtil; 7u{V1_ n1  
qnCjNN  
/** WBD?|Ss  
* @author treeroot \TZSn1isZX  
* @since 2006-2-2 e)= " Fq!  
* @version 1.0 ZNVrja*  
*/  qJ sH  
public class BubbleSort implements SortUtil.Sort{ -Bl]RpHCe  
It7R}0Smg  
/* (non-Javadoc) X n8&&w"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jDb"|l  
*/ Jz}`-fU`  
public void sort(int[] data) { VKkvf"X  
int temp; QM![tZt%;  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 0SfW:3  
if(data[j] SortUtil.swap(data,j,j-1); B0U(B\~Y  
} &wAVO_s  
} Kt](|  
} d~AL4~}  
} ^U5Qb"hz  
l\F71pwSI  
} V@ g v  
nK32or3  
选择排序: /ej[oR  
NVghkd  
package org.rut.util.algorithm.support; /oW]? 9  
DK eB%k  
import org.rut.util.algorithm.SortUtil; ^2H;  
tKS[  
/** _RzF h  
* @author treeroot n$`+03a  
* @since 2006-2-2 | p!($  
* @version 1.0 ufCpX>lNF  
*/ q}+zN eC  
public class SelectionSort implements SortUtil.Sort { _1Q6FI5iR  
 IMr#5  
/* XmD(&3;v-  
* (non-Javadoc) ?2l `%l5(  
* {nXygg J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cdy,8*   
*/ >+Ig<}p  
public void sort(int[] data) { Um}AV  
int temp; 7O'.KoMw  
for (int i = 0; i < data.length; i++) { Q-<Qm?  
int lowIndex = i; Ml$<x"Q  
for (int j = data.length - 1; j > i; j--) { 7nNNc[d*=  
if (data[j] < data[lowIndex]) { CIz0Gjtx6m  
lowIndex = j; Q^ZM|(s#  
} ]Zt]wnL+  
} Q5ff&CE  
SortUtil.swap(data,i,lowIndex); JOpH Z?  
} (BFwE@1"  
} ~;?<OOt|wG  
YGC%j  
} 0 zK{)HZ  
q8&l%-d`  
Shell排序: %59uR}\  
Rw%% 9  
package org.rut.util.algorithm.support; h}! 9?:E  
x&*f5Y9hCi  
import org.rut.util.algorithm.SortUtil; =w}JAEE|(i  
ff5 gE'  
/** z~X/.>  
* @author treeroot ymyzbE  
* @since 2006-2-2 J,:&U wkv  
* @version 1.0 y] c1x=x  
*/ hVmnXT 3Z  
public class ShellSort implements SortUtil.Sort{ &oMWs]0  
a/\{NHs6"5  
/* (non-Javadoc) }^iqhUvT F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *2u~5 Kc<  
*/ BGBHA"5fz  
public void sort(int[] data) { v+"4YIN  
for(int i=data.length/2;i>2;i/=2){ w6Nn x5Ay  
for(int j=0;j insertSort(data,j,i); SF&2a(~s  
} `:Gzjngc  
} JC%&d1  
insertSort(data,0,1); 5LB{b]w7m  
} 3ZI7;Gw  
&}[P{53sr  
/** C6[W/,eS  
* @param data &n )MGg1%  
* @param j &:g:7l]g  
* @param i (z>t4(%\  
*/ {@ vnKyf^K  
private void insertSort(int[] data, int start, int inc) { ,bXZ<RY$  
int temp; C=V2Y_j  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); A $gn{ c  
} 8'zZVX D<  
} y7M{L8{0  
} UL-_z++G  
sa4w.9O1GS  
} *9"x0bth  
s6@mXO:H^  
快速排序: o^vX\a?`u  
l@Vv%w9H  
package org.rut.util.algorithm.support; .dk<?BI#H  
7Vsp<s9bj  
import org.rut.util.algorithm.SortUtil; A$3Rbn}"  
R`cP%7K  
/** X0u,QSt' O  
* @author treeroot q9_ $&9  
* @since 2006-2-2 1f}(=Hv{  
* @version 1.0 z'"7zLQ  
*/ qEr?4h  
public class QuickSort implements SortUtil.Sort{ \O;2^  
`,-mXxTNT  
/* (non-Javadoc) VwE4:/7YN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HKXC=^}x'  
*/ +q}t%K5  
public void sort(int[] data) { 8^>c_%e}  
quickSort(data,0,data.length-1); lP3|h*  
} Si>38vCJ*  
private void quickSort(int[] data,int i,int j){ )Q'E^[Ua  
int pivotIndex=(i+j)/2; g w([08  
file://swap A,9JbX  
SortUtil.swap(data,pivotIndex,j); X}v*"`@Q  
7Hr_ZwO/^  
int k=partition(data,i-1,j,data[j]); C)z4Cn9#  
SortUtil.swap(data,k,j); "0PrdZMx  
if((k-i)>1) quickSort(data,i,k-1); )"pvF8JR%3  
if((j-k)>1) quickSort(data,k+1,j); ^;RK-)  
80*hi)ux[  
} b& +zAt.  
/** \~l_w ,Poo  
* @param data `SFeln{1B  
* @param i <ToBVG X  
* @param j Lj3o-@\*j  
* @return h6 {vbYj  
*/ Nv7-6C6<  
private int partition(int[] data, int l, int r,int pivot) { }+9?)f{?@  
do{ \;)g<TwL  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); H\R a*EO~j  
SortUtil.swap(data,l,r); %hsCB .r>|  
} i]%f94  
while(l SortUtil.swap(data,l,r); e~SK*vR%]  
return l; Nnl3r@  
} YpDJ(61+  
z6iKIw $  
} 25)9R^  
</{Zb.  
改进后的快速排序: K:a8}w>Up  
sQa;l]O:NC  
package org.rut.util.algorithm.support; iPTQqx-m$7  
Hw]E#S  
import org.rut.util.algorithm.SortUtil; tp] 5[U  
P35DVKS  
/** |6*Bu1  
* @author treeroot Tu#;Y."T  
* @since 2006-2-2 X ."z+-eh  
* @version 1.0 NS[eQ_rT  
*/ %xg+UW }  
public class ImprovedQuickSort implements SortUtil.Sort { \v Ajg  
eBrNhE-[G]  
private static int MAX_STACK_SIZE=4096; D*%am|QL  
private static int THRESHOLD=10; eWcqf/4?"  
/* (non-Javadoc) [CI&4) #  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w(Z?j%b  
*/ 32[}@f2q  
public void sort(int[] data) { ]nhh|q9r{  
int[] stack=new int[MAX_STACK_SIZE]; NUFz'MPv  
5l6/5  
int top=-1; _6NUtU  
int pivot; K3?5bT_{  
int pivotIndex,l,r; Y<xqws  
v|%41xOsr  
stack[++top]=0; bmv8nal<Y  
stack[++top]=data.length-1; lGd'_~'=  
1MLL  
while(top>0){ OyZR&,q  
int j=stack[top--]; JN0h3nZ_  
int i=stack[top--]; zuvPV{ X  
~=|}!A(  
pivotIndex=(i+j)/2; exb} y  
pivot=data[pivotIndex]; 86r"hy~  
hC<ROD  
SortUtil.swap(data,pivotIndex,j); :\OSHs<M  
q-JTGCFl  
file://partition |Kd#pYt%O  
l=i-1; f$o^Xu  
r=j; Sa= tiOv  
do{ |p6d]#z3  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); rwF$aR>9  
SortUtil.swap(data,l,r); TEC^|U`G  
} >2s4BV[(  
while(l SortUtil.swap(data,l,r); }iUK`e  
SortUtil.swap(data,l,j);  =_dM@j  
KZppQ0  
if((l-i)>THRESHOLD){ ?"x4u#x  
stack[++top]=i; C}8#yAS9M  
stack[++top]=l-1; "\b>JV5  
} RQ,#TbAe  
if((j-l)>THRESHOLD){ D\Ak-$kJ^  
stack[++top]=l+1; QL/KY G  
stack[++top]=j; A[Mke  
} ~:a1ELqVw  
 Z1 D  
} u"v7shRp:  
file://new InsertSort().sort(data); / FcRp,"  
insertSort(data); 9{u8fDm!  
} {*yvvb  
/** U#3N90,N=  
* @param data 9-42A7g^C  
*/ F9r.DG$}  
private void insertSort(int[] data) { &6x(%o|  
int temp; '}Fe&%  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); yfG;OnkZ  
} KL&/Yt   
} 2 *NPK}  
} Rt8[P6e"q  
B.8B1MFm  
} 6 4_}"fU  
V?{d<Ng~J  
归并排序: Vq'7gJj'  
t1']q"  
package org.rut.util.algorithm.support; uavATnGO{B  
AFAg3/  
import org.rut.util.algorithm.SortUtil; |qNe_)  
S#/BWNz|  
/** 8}'iEj^e  
* @author treeroot ';I}6N  
* @since 2006-2-2 \ "O5li3n  
* @version 1.0 X=sE1RB  
*/ >XgoN\w  
public class MergeSort implements SortUtil.Sort{ P6gkbtg  
.(@=L1C<}J  
/* (non-Javadoc) UsE\p9mCuV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S2$E`' J  
*/ qezWfR`  
public void sort(int[] data) { 6Og@tho  
int[] temp=new int[data.length]; (?qCtLZ  
mergeSort(data,temp,0,data.length-1); Sy8t2lk  
} =3bk=vy  
;8]HCC@:  
private void mergeSort(int[] data,int[] temp,int l,int r){ s%jBIeh  
int mid=(l+r)/2; J n.7W5v  
if(l==r) return ; iXWHI3  
mergeSort(data,temp,l,mid); uKJ:)oyaCP  
mergeSort(data,temp,mid+1,r); 4$Ai!a  
for(int i=l;i<=r;i++){ q<09]i  
temp=data; R$:-~<O  
} DG TLlBkT  
int i1=l; cC*WZ]  
int i2=mid+1; 7P{= Pv+  
for(int cur=l;cur<=r;cur++){ 6r~9$IM  
if(i1==mid+1) b^W&-Hh  
data[cur]=temp[i2++]; IL@yGuO,  
else if(i2>r) P27Ot1px  
data[cur]=temp[i1++]; ,HjJ jpE  
else if(temp[i1] data[cur]=temp[i1++]; P y'BMk  
else Z518J46o  
data[cur]=temp[i2++]; [+[ W\6  
} y_WC"  
} Oc)n,D)0  
:,8y8z$+  
} ]j&m\'-s  
ioi/`iQR  
改进后的归并排序: wkt4vE87  
{\$S585  
package org.rut.util.algorithm.support; >k @t.PeoV  
?'V78N sA  
import org.rut.util.algorithm.SortUtil; RRO@r}A!y  
01n!T2;yW}  
/** D^r g-E[L  
* @author treeroot +Nn >*sz  
* @since 2006-2-2 @[^ 3y C#  
* @version 1.0 eu(Fhs   
*/ ]5'*^rz ^  
public class ImprovedMergeSort implements SortUtil.Sort { _c]}m3/  
]TrJ*~  
private static final int THRESHOLD = 10; 30h[&Oc  
Jk.x^  
/* U N?tn}`!  
* (non-Javadoc) D4$b-?y  
* %<yW(s9{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r`"_D%kc  
*/ r'i99 ~  
public void sort(int[] data) { Rxy|Ag/I;V  
int[] temp=new int[data.length]; &OU.BR >  
mergeSort(data,temp,0,data.length-1); rVabkwYD  
} %jAc8~vW?  
LNL}R[1(  
private void mergeSort(int[] data, int[] temp, int l, int r) {  *RY}e  
int i, j, k; 'bfxQ76@sa  
int mid = (l + r) / 2; m0G"Aj  
if (l == r) xbiprhdv  
return; ?"b __(3  
if ((mid - l) >= THRESHOLD) >Iij,J5i  
mergeSort(data, temp, l, mid); v8-szW).  
else UB@(r86 d  
insertSort(data, l, mid - l + 1); J.~@j;[2  
if ((r - mid) > THRESHOLD) c<1$ zQY!  
mergeSort(data, temp, mid + 1, r); 1^k}GXsWmE  
else l<_v3/3  
insertSort(data, mid + 1, r - mid); !+$qSD,%x  
h x^@aI  
for (i = l; i <= mid; i++) { #o&T$D5  
temp = data; P.(UbF d'  
} n l5+#e*\  
for (j = 1; j <= r - mid; j++) { %\it4 r3  
temp[r - j + 1] = data[j + mid]; $I5|rB/4?  
} &Hw:65O  
int a = temp[l]; ^aaj=p:c V  
int b = temp[r]; *42KLns  
for (i = l, j = r, k = l; k <= r; k++) { `_ ^I 2  
if (a < b) { P#pb48^-  
data[k] = temp[i++]; ^(Gl$GC$Mu  
a = temp; HtN: v  
} else { @Hj]yb5  
data[k] = temp[j--]; |(~IfSE2  
b = temp[j]; r%: :q^b3  
} Xp;'Wa"@  
} 6~ET@"0uK  
} ,5 ,r .  
<,Gjo]z  
/** ['(qeS@5O  
* @param data ? ~ybFrc  
* @param l Q*1Avy6]  
* @param i uJ"#j X  
*/ drCL7.j#L  
private void insertSort(int[] data, int start, int len) { %~eu&\os  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); o5],c9R9b  
} ~,W|i  
} ''2:ZXX  
} 6@Q; LV+  
} .WglLUJ:Z  
L <  
堆排序: "P5,p"k:)  
.==c~>N  
package org.rut.util.algorithm.support; `~axOp9N  
@>`N%wH'  
import org.rut.util.algorithm.SortUtil; FkMM>X  
OfLj 4H 6Q  
/** 6T"5,Q</h  
* @author treeroot FkaQVT  
* @since 2006-2-2 <a CzB7x  
* @version 1.0 *4 m]UK  
*/ iLdUus!  
public class HeapSort implements SortUtil.Sort{ x+sSmW  
C B;j[.  
/* (non-Javadoc) KjA7x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w^~s4Q_>>  
*/ ;&b=>kPlZ  
public void sort(int[] data) { m%U=:u7#M  
MaxHeap h=new MaxHeap(); .:-*89c  
h.init(data); i39_( )X  
for(int i=0;i h.remove(); k]4CN  
System.arraycopy(h.queue,1,data,0,data.length); z'Bvjul  
} |}l/6WHB  
`[=/f=Q}  
private static class MaxHeap{ mv<cyWp  
?zo7.R-Vac  
void init(int[] data){ }m!T~XR</  
this.queue=new int[data.length+1]; p E1uD4lLb  
for(int i=0;i queue[++size]=data; *R&77 o7  
fixUp(size); 1\jj3Y'i'  
} lfoPFJ Z  
} 8yr-X!eF  
tjZS:@3 Z  
private int size=0; }Ej^"T:H_;  
@ /e{-Q  
private int[] queue; 8v)Z/R-  
kaZcYuT.9  
public int get() { yr zyus  
return queue[1]; Dmtsu2o  
} %)}_OXWf:  
ZA4sEVHW  
public void remove() { `=TJw,q  
SortUtil.swap(queue,1,size--); S{cK~sZj  
fixDown(1); 'pAq;2AA  
} *XXa 9z  
file://fixdown k%RQf0`T  
private void fixDown(int k) { WAr6Dv,8  
int j; ?AQR\)P  
while ((j = k << 1) <= size) { C-2#-{<  
if (j < size %26amp;%26amp; queue[j] j++; eET1f8 B=L  
if (queue[k]>queue[j]) file://不用交换 5IG#-Q(6sp  
break; o>M&C X+j$  
SortUtil.swap(queue,j,k); `yXHb  
k = j; %H"AHkge:a  
} _h B7;N3  
} <XpG5vV  
private void fixUp(int k) { AQ-R^kT  
while (k > 1) { O sIvW'$\  
int j = k >> 1; &53LJlL Co  
if (queue[j]>queue[k]) G*VcAJ [  
break; Yu%ZwTvw  
SortUtil.swap(queue,j,k); =HoA2,R)  
k = j; M/6q ^*  
} `?"[u" *  
} *fDhNmQ `  
L{1PCs36c  
} .|6Wmn-uS  
gdBH\K(\  
} a '<B0'  
p6{8t}  
SortUtil: p-8x>dmP(  
{NIE:MXX  
package org.rut.util.algorithm; ~<_P jV  
~ Q;qRx  
import org.rut.util.algorithm.support.BubbleSort; l;JB;0<s"  
import org.rut.util.algorithm.support.HeapSort; "CQ:<$|$  
import org.rut.util.algorithm.support.ImprovedMergeSort; /;1h-Rc>  
import org.rut.util.algorithm.support.ImprovedQuickSort; z!9w Lo^r  
import org.rut.util.algorithm.support.InsertSort; gDsb~>rb|  
import org.rut.util.algorithm.support.MergeSort; /9u12R*<  
import org.rut.util.algorithm.support.QuickSort; \g;-q9g;O  
import org.rut.util.algorithm.support.SelectionSort; [M.!7+$o  
import org.rut.util.algorithm.support.ShellSort; _%aJ/Y0Cy  
P_c9v/  
/** .ktyA+r8v  
* @author treeroot SnW>`  
* @since 2006-2-2 _$qH\>se  
* @version 1.0 &FzZpH  
*/ #.W<[KZf  
public class SortUtil { jTz~ V&^  
public final static int INSERT = 1; %wux#"8  
public final static int BUBBLE = 2; .{#J2}+[_}  
public final static int SELECTION = 3; 20RISj  
public final static int SHELL = 4; RC]-9gd3Q  
public final static int QUICK = 5;  Hn,;G`{  
public final static int IMPROVED_QUICK = 6; ^&8xfI6?  
public final static int MERGE = 7; w`K=J!5y2g  
public final static int IMPROVED_MERGE = 8; [Gb8o'  
public final static int HEAP = 9; r`CsR0[  
OM7EmMa;  
public static void sort(int[] data) { ~@Eu4ip)F  
sort(data, IMPROVED_QUICK); Hk|wO:7Be  
} |"EQyV  
private static String[] name={ 4] I7t  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ??`z W  
}; ],ISWb  
w57D qG>  
private static Sort[] impl=new Sort[]{ L(qQ,1VY  
new InsertSort(), r5aOQ  
new BubbleSort(), *U^7MU0  
new SelectionSort(), Wi{ jC?2Q  
new ShellSort(), EJ`"npU  
new QuickSort(), (\NZ)Ys  
new ImprovedQuickSort(), OAZ5I)D>  
new MergeSort(), >FM2T<.;  
new ImprovedMergeSort(), ;V\l, u  
new HeapSort() s8 0$   
}; ":N E I  
uz;z+Bd^  
public static String toString(int algorithm){ <2{-ey]  
return name[algorithm-1]; ?T <2Cl'C  
} u IGeSd5B  
dBMr%6tz  
public static void sort(int[] data, int algorithm) { r5g:#mF"  
impl[algorithm-1].sort(data); #Rcb iV*M  
} DF!*S{)  
0_faJjTbP;  
public static interface Sort { <mdHca  
public void sort(int[] data); :NPnwX8w  
} Rz9IjL.Z  
f& >[$zh  
public static void swap(int[] data, int i, int j) { a$ FO5%o  
int temp = data; K _sHZ  
data = data[j]; "xKykSk  
data[j] = temp; ?B~S4:9  
} gG6j>%y  
} o\;cXu h  
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