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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。 FT).$h~+4  
插入排序: uJ`N'`Z  
M-WSdG[AJ  
package org.rut.util.algorithm.support; ulR yt^bx|  
.EYL  
import org.rut.util.algorithm.SortUtil; ^Z (cV g  
/** /E>;O47a  
* @author treeroot f5}afPk  
* @since 2006-2-2 ;H$ Cq' I  
* @version 1.0  D2e-b  
*/ yoE-a  
public class InsertSort implements SortUtil.Sort{ |$.?(FZYu  
z:'m50'  
/* (non-Javadoc) +h) "m/mE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LpHGt]|D  
*/ L K&c~ Uy  
public void sort(int[] data) { XY0kd&N8  
int temp; ,@Csa#  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;W0J  
} &+9 ;  
} ]dycesc'  
} z/Lb1ND8  
88Pt"[{1  
} hV3]1E21"  
Ff<cY%t  
冒泡排序: g4W$MI  
vc#o(?g  
package org.rut.util.algorithm.support; _z_YJ7A>  
`&;#A*C0  
import org.rut.util.algorithm.SortUtil; U$:^^Zt`B  
[*%lm9 x  
/** >N3X/8KL%  
* @author treeroot EeaJUK]z9  
* @since 2006-2-2 C&O8fNB_  
* @version 1.0 )Rr6@o  
*/ l&& i`  
public class BubbleSort implements SortUtil.Sort{ 3h bHS~  
>^8O:.  
/* (non-Javadoc) kV-<[5AWW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) at>_EiS  
*/ T*p7[}#  
public void sort(int[] data) { _ep&`K  
int temp; j;$f[@0o  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ,~L*N*ML  
if(data[j] SortUtil.swap(data,j,j-1); ``xm##K  
} YB*)&@yx  
} 5{H)r   
} GtRpgM  
} +:A `e+\  
\mF-L,yu  
} <XL%*  
XT0-"-q  
选择排序: |dIR v  
GEPWb[Oa  
package org.rut.util.algorithm.support; `n+uA ~  
!&%KJS6p4  
import org.rut.util.algorithm.SortUtil; pI@71~|R  
l6zAMyau5  
/** EXdX%T\  
* @author treeroot l4gH]!/@  
* @since 2006-2-2 q\tr&@4iC  
* @version 1.0 /OKp(u;)z  
*/ VnuG^)S  
public class SelectionSort implements SortUtil.Sort { %+r(*Q+0$f  
^;II@n i  
/* hC-uz _/3  
* (non-Javadoc) hu-]SGb6  
* hl]d99Lc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Dw=L]i :0v  
*/ 1P]J3o  
public void sort(int[] data) { HSud$(w  
int temp; /{R ^J#  
for (int i = 0; i < data.length; i++) { DzC`yWstP  
int lowIndex = i; qJ" (:~  
for (int j = data.length - 1; j > i; j--) { .J.}}"+U  
if (data[j] < data[lowIndex]) { :7@[=n  
lowIndex = j; 8hV]t'/;  
} uVYn,DB`  
} *gmc6xY  
SortUtil.swap(data,i,lowIndex); TJ)Nr*U3_  
} ->#wDL!6  
} sta/i?n  
s-#@t  
} uNewWtUb(  
yCz"~c  
Shell排序: Rd(8j+Q?ps  
[KUkv  
package org.rut.util.algorithm.support; `&I6=,YLp  
~ESw* 6s9  
import org.rut.util.algorithm.SortUtil; j1Ys8k%$l  
{9J|\Zz3  
/** W3l[a^1d  
* @author treeroot d{TcjZ  
* @since 2006-2-2 +@$VJM%^7b  
* @version 1.0 l|842N@1  
*/ yXkQ ,y  
public class ShellSort implements SortUtil.Sort{ /{({f?k<\/  
C,;?`3bH@  
/* (non-Javadoc) !,- 'wT<v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zGe =l;  
*/ fq1w <e  
public void sort(int[] data) { 6l|L/Z_6  
for(int i=data.length/2;i>2;i/=2){ +4J'> dr  
for(int j=0;j insertSort(data,j,i); X6sZwb  
} -0uGzd+m*  
} A?tCa*b^  
insertSort(data,0,1); 6rS ? FG=  
} 0MT?}D&TL  
f$</BND  
/** :WH{wm|  
* @param data *K>2B99TXu  
* @param j 2U%t  
* @param i D~qi6@Ga  
*/ #WA7}tHb  
private void insertSort(int[] data, int start, int inc) { Eoz/]b  
int temp; EQnU:a  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Ym%# "  
} kFJ]F |^7  
} 7<kr|-  
} ;E}&{w/My  
x ~l"'qsK  
} &=zJ MGa  
0"-H34M <D  
快速排序: D _\HX9  
x1 LI&  
package org.rut.util.algorithm.support; uUl ;}W  
c[1{>z{G  
import org.rut.util.algorithm.SortUtil; jKP75jm  
[L7S`Z  
/** Ev#, }l+  
* @author treeroot 2!f'l'}  
* @since 2006-2-2 bil>;&h  
* @version 1.0 qPN  
*/ %to.'R  
public class QuickSort implements SortUtil.Sort{ yyPj!<.MGP  
p-C{$5& O1  
/* (non-Javadoc) ILNghtm-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .&=\ *cZc  
*/ xR'd}>`  
public void sort(int[] data) { 7 |Qb}[s  
quickSort(data,0,data.length-1); v&sp;%I6=  
} bq7()ocA  
private void quickSort(int[] data,int i,int j){ uPFbKSJj  
int pivotIndex=(i+j)/2; cB;DB) 0P  
file://swap % [,^2s  
SortUtil.swap(data,pivotIndex,j); (^=kV?<  
d6W&u~  
int k=partition(data,i-1,j,data[j]); VuBi_v6  
SortUtil.swap(data,k,j); _#<l -R`  
if((k-i)>1) quickSort(data,i,k-1); *nM.`7g*[  
if((j-k)>1) quickSort(data,k+1,j); 2}{[ J  
}k1[Fc|  
} oOQan  
/** r|jBKq~  
* @param data $~EY:  
* @param i .Gno K?  
* @param j xAsy07J?  
* @return .<P@6Jq  
*/ (yu0iXZY  
private int partition(int[] data, int l, int r,int pivot) { }Ny~.EV5^  
do{ +'e3YF+'  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ?s0")R&  
SortUtil.swap(data,l,r); /[3!kW  
} QK~>KgVi  
while(l SortUtil.swap(data,l,r); < Lrd(b;  
return l; .bMU$O1  
} lZ+ 1 A0e  
.b%mr:nEt7  
} oRn5blj  
gn 9CZ  
改进后的快速排序: yErvgf  
KbRKPA`  
package org.rut.util.algorithm.support; :)e/(I]  
Yh%  
import org.rut.util.algorithm.SortUtil; @0:mP  
}>Lz\.Z/+[  
/** Z*5]qh2r8  
* @author treeroot z:$TW{%M  
* @since 2006-2-2 I8hmn@ce  
* @version 1.0 *u<@_Oa  
*/ RG_)<U/B  
public class ImprovedQuickSort implements SortUtil.Sort { V> eJ  
E<_+Tc  
private static int MAX_STACK_SIZE=4096; 1n ZE9;o  
private static int THRESHOLD=10; $r)nvf`\  
/* (non-Javadoc) 64!V8&Ay  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6~+?DIc  
*/ *Oe;JqQkK  
public void sort(int[] data) { 7w"YCRKh  
int[] stack=new int[MAX_STACK_SIZE]; {' |yb  
T|nN.  
int top=-1; X?"Ro`S  
int pivot; Z$@XMq!  
int pivotIndex,l,r; X/wqfP  
}Sb&ux  
stack[++top]=0; K[|d7e  
stack[++top]=data.length-1; t#J #DyY5  
p&\x*~6u  
while(top>0){ |c>A3 P$=B  
int j=stack[top--]; )6zwprH!  
int i=stack[top--]; HaamLu  
d3C*]|gQ  
pivotIndex=(i+j)/2; DU4Prjb'  
pivot=data[pivotIndex]; T1b9Zqc)f  
)@YrHS4  
SortUtil.swap(data,pivotIndex,j); esEOV$s}  
seH#v  
file://partition :!EOg4%i  
l=i-1; 4a~9?}V:  
r=j; 4B8{\ "6  
do{ 0ID 8L [  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ]pA}h. R#-  
SortUtil.swap(data,l,r); <<![3&p#  
} ?G-a:'1!6  
while(l SortUtil.swap(data,l,r); 7,"1%^tU  
SortUtil.swap(data,l,j); xF{<-b  
-r82'3]  
if((l-i)>THRESHOLD){ ~ #~Kxh  
stack[++top]=i; l>9ZAI\^  
stack[++top]=l-1; `Uw^,r  
} P3YG:*  
if((j-l)>THRESHOLD){ FCmS3KIa,  
stack[++top]=l+1; 5k}UXRB?  
stack[++top]=j; o'  DXd[y  
} VuW&CnZ  
@le23+q  
} R=M${u<t  
file://new InsertSort().sort(data); "mE<r2=@  
insertSort(data); Wc_Ph40C<_  
} 8 YBsYKC  
/** {/ _.]Vh  
* @param data $NWI_F4  
*/ uEuK1f`  
private void insertSort(int[] data) { 'm"H*f  
int temp; ^\\cGJ&8c  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); T3{qn$t8  
} [XQoag;!  
} #PmF@ CHR  
} .,x08M  
z|yC[ Ota  
} ]IkjZ=  
mv xg|<  
归并排序: Z;i^h,j?$1  
UeT"v?zP  
package org.rut.util.algorithm.support; fD|ox  
zUxF"g-W  
import org.rut.util.algorithm.SortUtil; r jL%M';  
,k@fX oW  
/** Nr7MSFiL  
* @author treeroot 4 ITSDx  
* @since 2006-2-2 15gI-Qb  
* @version 1.0 Wm.SLr,o0  
*/ 4//Ww6W:  
public class MergeSort implements SortUtil.Sort{ s4}}MV3X  
58MBG&a%  
/* (non-Javadoc) YKUs>tQ!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c66Iy"  
*/ :/Nz' n  
public void sort(int[] data) { VxfFk4  
int[] temp=new int[data.length]; GYv2 ^IB:  
mergeSort(data,temp,0,data.length-1); c{#lKD<7  
} 82V xk  
eGLLh_V"  
private void mergeSort(int[] data,int[] temp,int l,int r){ c-avX  
int mid=(l+r)/2; ./ib{ @A.  
if(l==r) return ; ^QV;[ha,o  
mergeSort(data,temp,l,mid); Qo{^jDe,c*  
mergeSort(data,temp,mid+1,r); W?/7PVGv5h  
for(int i=l;i<=r;i++){ AC(}cMM+  
temp=data; s6).?oE  
} 4- 6'  
int i1=l; Ar=pzQ<Z{  
int i2=mid+1; T cSj `-  
for(int cur=l;cur<=r;cur++){ e[n T'e  
if(i1==mid+1) JT<Ia  
data[cur]=temp[i2++]; >1mCjP  
else if(i2>r) o,Ew7~u  
data[cur]=temp[i1++]; }kXF*cVg  
else if(temp[i1] data[cur]=temp[i1++]; wEzLfZ Oz/  
else JVTG3:zD  
data[cur]=temp[i2++]; 2@ACmh  
} I[<C)IG  
} S` X;2\:  
X'[S Cs  
} 1/w['d4l!  
OjeM#s#N!  
改进后的归并排序: JYKA@sZHe  
[>?B`1;@  
package org.rut.util.algorithm.support; |TEf? <"c  
\kWceu}H,  
import org.rut.util.algorithm.SortUtil; )Hlr 09t=]  
+\.gdL)  
/** rMf& HX  
* @author treeroot 4U>  
* @since 2006-2-2 `t ZvIy*  
* @version 1.0 :fpYraBM  
*/ /k}v m3  
public class ImprovedMergeSort implements SortUtil.Sort { |n~,$  
O2Rv^la  
private static final int THRESHOLD = 10; p#J}@a  
 O,xU+j~)  
/* ]rHdG^0uss  
* (non-Javadoc) se$GE:hC1Q  
* i':<Ro  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <(@m913|  
*/ )BS./zD*[<  
public void sort(int[] data) { 5oWR}qqFK  
int[] temp=new int[data.length]; -jFt4Q7}8  
mergeSort(data,temp,0,data.length-1); 7=mU["raz`  
} |3\ mH~Bw  
,n ~H]66 n  
private void mergeSort(int[] data, int[] temp, int l, int r) { YJXh|@LT  
int i, j, k; |'mgo  
int mid = (l + r) / 2; .wS' Xn&  
if (l == r) = ?T'@C  
return;  @;d(>_n  
if ((mid - l) >= THRESHOLD) aLuxCobV  
mergeSort(data, temp, l, mid); aeE9dV~  
else T3)/?f?|  
insertSort(data, l, mid - l + 1); ^^)D!I"cA,  
if ((r - mid) > THRESHOLD) A^ t[PKM"  
mergeSort(data, temp, mid + 1, r); H`aqpa"C  
else )MW.Y  
insertSort(data, mid + 1, r - mid); oXV  
~n|*-rca  
for (i = l; i <= mid; i++) { eH=lX9  
temp = data; 3MiNJi#=2  
} f#/v^Ql*  
for (j = 1; j <= r - mid; j++) { +vBq,'k`  
temp[r - j + 1] = data[j + mid]; m/%sBw\rx  
} 07# ~cVI  
int a = temp[l]; !1)lGjMW  
int b = temp[r]; Sep}{`u  
for (i = l, j = r, k = l; k <= r; k++) { +@AN+!(  
if (a < b) { Bk>Ch#`Bw  
data[k] = temp[i++]; N~g'Z `  
a = temp; z)yxz:E  
} else { @+:S'mAQC  
data[k] = temp[j--]; vXRfsv y  
b = temp[j]; JTQ$p*2]  
} x>;! `}x  
} 8GV$L~i  
}  [L] ca*  
&T}~h^/t  
/** avykg(  
* @param data ft4J.oT  
* @param l =?0o5|u]  
* @param i l)HF4#Bs  
*/ .P9ALJP(b  
private void insertSort(int[] data, int start, int len) { y7ijT='8  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); m(XcPb  
} *pyi;  
} DU4NPys]y  
} S3`zB?7,  
} y 7|x<Z  
`\(Fax  
堆排序: 7?qRY9Qu  
uf^"Y3  
package org.rut.util.algorithm.support; 8BhLO.(<O  
;Q:^|Fw!F  
import org.rut.util.algorithm.SortUtil; h~urZXD<  
aYkm]w;C  
/** '|G_C%,B  
* @author treeroot a7)q^;:O  
* @since 2006-2-2 b`PAOQ  
* @version 1.0 8sx\b  
*/ P'KaWu9z  
public class HeapSort implements SortUtil.Sort{ KaZ*HPe(  
O+@"l$;N  
/* (non-Javadoc) \3hhM}6)DM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [58xT>5`m  
*/ %XMrS lSOp  
public void sort(int[] data) { ` Cdk b5  
MaxHeap h=new MaxHeap(); CY? ]o4IV  
h.init(data); [kMXr'TyPX  
for(int i=0;i h.remove(); c1'OIK C  
System.arraycopy(h.queue,1,data,0,data.length); <:W]uT  
} 5tX|@Z: z  
'{@hBB+ D  
private static class MaxHeap{ "O<JVC{m  
5- 0  
void init(int[] data){ O{,Uge2n,  
this.queue=new int[data.length+1]; r3mB"("Z'  
for(int i=0;i queue[++size]=data; &$.Vi&{.  
fixUp(size); @ZK#Y){  
} $M@SZknm  
} p)(mF"\8=  
.[? E1we  
private int size=0; ZsirX~W<  
j/5>zS  
private int[] queue; ,]w -!I  
:(c2YZ   
public int get() { xC9^x7%3O  
return queue[1]; 72GXgah  
} DQDt*Uj,  
:+|b7fF  
public void remove() { #r `hK)  
SortUtil.swap(queue,1,size--); 5H1SC8+B,  
fixDown(1); IpXg2QbN  
} %qcBM~efT  
file://fixdown if9I7@  
private void fixDown(int k) { `o8b\p\zn  
int j; L%ND?'@  
while ((j = k << 1) <= size) { 4NMv7[r  
if (j < size %26amp;%26amp; queue[j] j++; 1 M7=*w,  
if (queue[k]>queue[j]) file://不用交换 %np b.C|+  
break; y@ J\h8_  
SortUtil.swap(queue,j,k); 4xuL{z;\  
k = j; !bFa\6]q  
} r*C:)z .}  
} Q*+@"tk<  
private void fixUp(int k) { E j@M\  
while (k > 1) { s1<_=sfnT  
int j = k >> 1; y%Ui)UMnw]  
if (queue[j]>queue[k]) s03 DL  
break; 7uFM)b@.P  
SortUtil.swap(queue,j,k); RXkE"H{  
k = j; [aU#"k)M  
} 8XD9fB^  
} Z'6 o$Xv  
>|KfO>  
} JAj<*TB.%  
aSi:(w  
} xojy[c#  
w:I^iI .  
SortUtil: Ih!UL:Ckh  
0|9(oP/:  
package org.rut.util.algorithm; ELeR5xT  
<1.].A@b*  
import org.rut.util.algorithm.support.BubbleSort; ])!|b2:s3  
import org.rut.util.algorithm.support.HeapSort; u`$,S& Er  
import org.rut.util.algorithm.support.ImprovedMergeSort; %?J\P@  
import org.rut.util.algorithm.support.ImprovedQuickSort; 2/RK pl &  
import org.rut.util.algorithm.support.InsertSort; k ~lj:7g~  
import org.rut.util.algorithm.support.MergeSort; oJVpNE[3]  
import org.rut.util.algorithm.support.QuickSort; d}3<nz,  
import org.rut.util.algorithm.support.SelectionSort; I&3L1rl3{*  
import org.rut.util.algorithm.support.ShellSort; F IDNhu  
l]Jk  }.  
/** m1a0uEA G  
* @author treeroot >Y?B(I2e  
* @since 2006-2-2 R!lNm,i  
* @version 1.0 aD8cqVhM3&  
*/ |jJC~/WR  
public class SortUtil { + 1\1Z@\M  
public final static int INSERT = 1; L.$9ernVY  
public final static int BUBBLE = 2; 8s-RNA>7^  
public final static int SELECTION = 3; u{"o*udU  
public final static int SHELL = 4; EC&t+"=R  
public final static int QUICK = 5; {cnya*  
public final static int IMPROVED_QUICK = 6; 38b%km#  
public final static int MERGE = 7; 2/sD#vC  
public final static int IMPROVED_MERGE = 8; Bs =V-0  
public final static int HEAP = 9; m=Y9sB  
c!T^JZBb  
public static void sort(int[] data) { HWT0oh]  
sort(data, IMPROVED_QUICK); ^*"&e\+p  
} M7/P&d  
private static String[] name={ 9~I\WjB "  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" "zc@(OA[z  
}; N5#qox$D  
}>b4s!k,  
private static Sort[] impl=new Sort[]{ !p >a,8w  
new InsertSort(), L7_(KCh  
new BubbleSort(), ZD/>L/  
new SelectionSort(), 9xP{#Qa  
new ShellSort(), [@U8&W  
new QuickSort(), F#7ZR*ZB1  
new ImprovedQuickSort(), jy(,^B,]  
new MergeSort(), U2 <*BRJ  
new ImprovedMergeSort(), `* "u"7e  
new HeapSort() Yd~K\tX :n  
}; m~1{~'  
TC?kuQI  
public static String toString(int algorithm){ #HWz.Wb  
return name[algorithm-1]; 2!\y0*}K  
} m8n!<_NFt(  
Y;6<AIx>  
public static void sort(int[] data, int algorithm) { 5'@J}7h  
impl[algorithm-1].sort(data); [&|Le;h  
} 0){%4  
@;qC % +^  
public static interface Sort { {S%)GvrT  
public void sort(int[] data); yT`[9u,  
} 0a QtJ0e16  
kFgN^v^t  
public static void swap(int[] data, int i, int j) { 6[$kEKOY=  
int temp = data; wYSvI  
data = data[j]; 4q/E7n  
data[j] = temp; Fkuq'C<|Y  
} D;Fvd:  
} Hj |~*kG  
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