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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。 Gb?O-z%8*  
插入排序: ,:G3Y )  
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package org.rut.util.algorithm.support; ,vN0Jpf}\8  
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import org.rut.util.algorithm.SortUtil; c2$&pZ M  
/** A&dNCB  
* @author treeroot {1jywb }  
* @since 2006-2-2 #c2InwZV  
* @version 1.0 s3., N|  
*/ L.]mC !  
public class InsertSort implements SortUtil.Sort{ 9F*],#ng  
.JJ^w!|>#  
/* (non-Javadoc) NbDfD3 1GK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G0u3*.  
*/ a%h'utF{[  
public void sort(int[] data) { #_zd`s3k  
int temp; Qey6E9eCA  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); DJm/:td  
} t G{?  
} x: Nd>Fb  
} :2n(WXFFI  
1.5lJ:[G  
} CYxrKW l:'  
SdI/  
冒泡排序: N]p|c3D  
<;?&<qMo,P  
package org.rut.util.algorithm.support; aD5G0d?u  
X?F$jX|c  
import org.rut.util.algorithm.SortUtil; uy,ySBY  
A{7N#-h_  
/** ~6hG"t]:  
* @author treeroot I8 <s4q  
* @since 2006-2-2 ElEa*70~g  
* @version 1.0 hVfiF  
*/ bnWKfz5  
public class BubbleSort implements SortUtil.Sort{ `Al[gG?/!  
.)wj{(>TJ  
/* (non-Javadoc) /)ubyl]^p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $B iG7,[#  
*/ jgr2qSU C  
public void sort(int[] data) { >VAZ^kgi  
int temp; x_&m$Fh  
for(int i=0;i for(int j=data.length-1;j>i;j--){ -}ebn*7i\  
if(data[j] SortUtil.swap(data,j,j-1); I)-u)P?2x  
} LqHeLN  
} aoZ`C3  
} ~'4:{xH  
} >:ZlYZ6sI  
GC3:ZpV`  
} [|sKu#yW  
b=#3p  
选择排序: ;5*)kX  
!6wbg  
package org.rut.util.algorithm.support; G0^O7w^5  
 MRB>(}  
import org.rut.util.algorithm.SortUtil; 3xW;qNj:!l  
;'Pi(TA)  
/** n ^T_pqV?X  
* @author treeroot TwZvz[u  
* @since 2006-2-2 qdn\8Pn  
* @version 1.0 q5$z:'zE  
*/ mX8A XWIa  
public class SelectionSort implements SortUtil.Sort { vWJhSpC[  
5T[9|zJs  
/* 328(W  
* (non-Javadoc) ':7%@2Zo  
* Q7y6</4f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -S=Zsr\  
*/ HA{-XPAWZ  
public void sort(int[] data) { _ +,2b:D:  
int temp; %Km_Sy[7']  
for (int i = 0; i < data.length; i++) { dkV%Pyj  
int lowIndex = i; n\2VrUQ)M  
for (int j = data.length - 1; j > i; j--) { cLQvzd:h=  
if (data[j] < data[lowIndex]) { /~_Cb= 7  
lowIndex = j; J! 4l-.-  
} '_n{+eR74  
} dt"[5;_P`  
SortUtil.swap(data,i,lowIndex); O=1uF  
} tUmI#.v   
} b'$j* N  
? OBe!NDf  
} vf@d (g  
sz.(_{5!  
Shell排序: [Cz.K?+#M  
I`44}oJ  
package org.rut.util.algorithm.support; XM/P2=;  
+a&-'`7g  
import org.rut.util.algorithm.SortUtil; h^P>pI~  
%PG::b  
/** y(:hN)  
* @author treeroot sBIqee'T  
* @since 2006-2-2 r'hr 'wZ  
* @version 1.0 #R|M(Z">q  
*/ laM0W5  
public class ShellSort implements SortUtil.Sort{ g1\4Jb  
u[U~`*i*rA  
/* (non-Javadoc) do{#y*B/g!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nzDS  
*/ +G&h  
public void sort(int[] data) { Z*kGWL  
for(int i=data.length/2;i>2;i/=2){ i:WHql"Kw_  
for(int j=0;j insertSort(data,j,i); v@k62@;  
} ~?vm97l  
} :~^ec|tp  
insertSort(data,0,1); qy@gW@IU  
}   [E(DGt  
-p>KFHj6  
/** ewgcpV|spn  
* @param data @2 dp5  
* @param j asR6,k  
* @param i XJ]MPiXj  
*/ >b-rAO\{}  
private void insertSort(int[] data, int start, int inc) { UD*#!H  
int temp; @Q x|!%  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); d@"eWvnlZ  
} -!MDYj+U  
} w2~(/RgO  
} o lNL|WJ`w  
`hS<F" j  
} 8N(bLGUG  
bF' ~&<c  
快速排序: 76)(G/  
j:|60hDz^  
package org.rut.util.algorithm.support; d\, 4Wet;#  
UL[4sv6\9  
import org.rut.util.algorithm.SortUtil; ~`hI|i<]  
R*TCoEKO  
/** 8N6a=[fv<  
* @author treeroot ^lu)'z%6  
* @since 2006-2-2 AnPm5i.  
* @version 1.0 /[[zAq{OA  
*/ O6OP{sb  
public class QuickSort implements SortUtil.Sort{ 9Pd~  
% @Ks<"9  
/* (non-Javadoc) fB"3R-H?O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S#+G?I3w  
*/ K4n1#]8i  
public void sort(int[] data) { &tD`~  
quickSort(data,0,data.length-1); ?9!tMRb  
} ]Vl5v5_  
private void quickSort(int[] data,int i,int j){ Ats"iV  
int pivotIndex=(i+j)/2; {<~XwJ.  
file://swap z.Y7u3K.8  
SortUtil.swap(data,pivotIndex,j); HcHfwLin0  
%8$JL=c  
int k=partition(data,i-1,j,data[j]); ^i-%FY_i5}  
SortUtil.swap(data,k,j); \9se~tAl3  
if((k-i)>1) quickSort(data,i,k-1); 'A !Dg  
if((j-k)>1) quickSort(data,k+1,j); uA!T@>vl  
nB,FJJ{kb  
} T|ZZkNP|6  
/** I2j;9Qcz  
* @param data "MC&!AMv  
* @param i S97.O@V!$  
* @param j Z6>:k,-Ot  
* @return )\^o<x2S  
*/ :v{ $]wg  
private int partition(int[] data, int l, int r,int pivot) { #TW$J/Jb  
do{ 9z'</tJ`  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); lbg6n:@  
SortUtil.swap(data,l,r); 7@EYF  
} Yc?taL)  
while(l SortUtil.swap(data,l,r); _gC<%6#V`r  
return l; EemKYcE@Nr  
} %/etoK  
|,dMF2ADc  
} pJa FPO..|  
@dCu]0oNI  
改进后的快速排序: jI;bVG  
.[2MPjg  
package org.rut.util.algorithm.support; nZ\,ZqV  
~g|e?$j  
import org.rut.util.algorithm.SortUtil; mZ/B:)_  
lBG* P>;  
/** aGpRdF1;!  
* @author treeroot zo} SS[  
* @since 2006-2-2 Vg \-^$  
* @version 1.0 a _  
*/ i+&= "Z@  
public class ImprovedQuickSort implements SortUtil.Sort { ~d5"<`<^o  
_\]D<\St  
private static int MAX_STACK_SIZE=4096; z(\H.P#  
private static int THRESHOLD=10; oSa FmP  
/* (non-Javadoc) 34;c00  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ac7`nvI=  
*/ "E''ZBLO~  
public void sort(int[] data) { V'K$:9^x[8  
int[] stack=new int[MAX_STACK_SIZE]; P< WD_W  
G~B V^  
int top=-1; >P0AGZ  
int pivot; ]NFDE-Jz]  
int pivotIndex,l,r; GV[%P  
M0]l!x#7  
stack[++top]=0; 6J|f^W-fs  
stack[++top]=data.length-1; mu{%%b7|^  
X2@o"xU  
while(top>0){ $}KYpSV  
int j=stack[top--]; @{CpC  
int i=stack[top--]; :>3&"T.  
U1q$B32  
pivotIndex=(i+j)/2; +:'Po.{"  
pivot=data[pivotIndex]; nr-mf]W&  
)<^ ~${$U  
SortUtil.swap(data,pivotIndex,j); ok6e=c '  
:T{or-  
file://partition 8dA/dMQ  
l=i-1; $s]@%6 f  
r=j; iMA)(ZS  
do{ %BG5[ XQ7  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); xrX("ili  
SortUtil.swap(data,l,r); CIaabn  
} 6wu/6DO   
while(l SortUtil.swap(data,l,r); ]@8=e'V  
SortUtil.swap(data,l,j); hYWWvJ)S  
T=R94  
if((l-i)>THRESHOLD){ X^.r@tT  
stack[++top]=i; s lI)"+6  
stack[++top]=l-1;  +;!w;t  
} WX=+\`NyJ(  
if((j-l)>THRESHOLD){ P)\f\yb  
stack[++top]=l+1; 3\WES!  
stack[++top]=j; F 5JgR-P  
} f:UN~z'yr  
GecXMAa:2  
} }`M6+.z3F  
file://new InsertSort().sort(data); 4xYo2X,B  
insertSort(data); < Ihn1?  
} <bjy<98LT  
/** .N'UnKz  
* @param data Q` s(T  
*/ * ;M?R?+  
private void insertSort(int[] data) { )xK!i.  
int temp; b,`\"'1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); nWl0R=  
} $U0(%lIU  
} MnS"M[y3  
} (,TO|  
f7W=x6Z4  
} C`#N Q*O  
.^NV e40O  
归并排序: (\I =v".  
}I10hy~W  
package org.rut.util.algorithm.support; B~ez>/H^  
'H9~rq7  
import org.rut.util.algorithm.SortUtil; :Aa^afjJw  
lxz %b C@  
/** e5/_Vga  
* @author treeroot .o8Gi*PEY  
* @since 2006-2-2 1k~jVC2VA  
* @version 1.0 8xv\Zj+  
*/ o{hKt?  
public class MergeSort implements SortUtil.Sort{ 37[C^R!1c  
Uy_= #&jg  
/* (non-Javadoc) 2~4C5@SxL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P>kx{^  
*/ 4HHf3j!5  
public void sort(int[] data) { k^]~NP  
int[] temp=new int[data.length]; S-H3UND"  
mergeSort(data,temp,0,data.length-1); @gj5'  
} #.='dSj  
gi6_la+  
private void mergeSort(int[] data,int[] temp,int l,int r){ K%k,-  
int mid=(l+r)/2; ,@;<u'1\G  
if(l==r) return ; [y:LA ~q  
mergeSort(data,temp,l,mid); \'KzSkC8  
mergeSort(data,temp,mid+1,r); QezK&iJg  
for(int i=l;i<=r;i++){ ?l(hS\N,  
temp=data; Q4PXC$u  
} KJ~pY<a?  
int i1=l; X ,   
int i2=mid+1; gn%"dfm  
for(int cur=l;cur<=r;cur++){ A^7!+1*K+  
if(i1==mid+1) W{h7+X]Y  
data[cur]=temp[i2++]; RW)C<g  
else if(i2>r) L;  ~=(  
data[cur]=temp[i1++]; 4jW{IGW  
else if(temp[i1] data[cur]=temp[i1++]; *Tlv'E.M  
else 72 6y/o  
data[cur]=temp[i2++]; 8xX{y#  
} 2P=;r:cx  
} neBkwXF!  
<*+ MBF  
} ivq4/Y] -X  
pDLo`F}A  
改进后的归并排序: @RP|?Xc{?  
J\*d4I<(Rt  
package org.rut.util.algorithm.support; |H4'*NP"  
}VGiT~2$  
import org.rut.util.algorithm.SortUtil; R[c_L=  
;gyE5n-{  
/** 34=0.{qn  
* @author treeroot D4|_?O3 |m  
* @since 2006-2-2 WKf~K4BL>  
* @version 1.0 -UVWs2W'$  
*/ rU O{-R  
public class ImprovedMergeSort implements SortUtil.Sort { 7,zARWB!?  
On^#x]  
private static final int THRESHOLD = 10; 8{YxUD  
 V("1\  
/* _biJch  
* (non-Javadoc)  #L)rz u  
* LcXMOT)s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'w2;oO  
*/ &}cie"\L  
public void sort(int[] data) { DbN'b(+  
int[] temp=new int[data.length]; Q  [{vU  
mergeSort(data,temp,0,data.length-1); "->:6Oe2   
} R;o_*  
{E/TC%  
private void mergeSort(int[] data, int[] temp, int l, int r) { kXr%73s  
int i, j, k; bv/b<N@4?$  
int mid = (l + r) / 2; wO#+8js  
if (l == r) KB = z{g  
return; ]YP?bP,:  
if ((mid - l) >= THRESHOLD) n1Jz49[r  
mergeSort(data, temp, l, mid); U6Ak"  
else ThxrhQ q[+  
insertSort(data, l, mid - l + 1); &; \v_5N6  
if ((r - mid) > THRESHOLD) sfa'\6=O  
mergeSort(data, temp, mid + 1, r); qpl5n'qHUc  
else p2G8 Qls  
insertSort(data, mid + 1, r - mid); .D .Rn/  
o1Ln7r.  
for (i = l; i <= mid; i++) { zTLn*?  
temp = data; Sg-xm+iSDt  
} |BW,pT  
for (j = 1; j <= r - mid; j++) { S2)S/ nf  
temp[r - j + 1] = data[j + mid]; _LNPB$P  
} 7;NV 1RV  
int a = temp[l]; 2#3R]zIO  
int b = temp[r]; y`\Mhnj  
for (i = l, j = r, k = l; k <= r; k++) { :!$z1u8R  
if (a < b) { ">3@<f>  
data[k] = temp[i++]; +0Gep}&z.  
a = temp; Kcl$|T  
} else { #A; Z4jK  
data[k] = temp[j--]; l'QR2r7&.  
b = temp[j]; TeJ `sJ  
}  iC]lO  
} w>u Z$/  
} >{a,]q*  
p( *3U[1  
/** Q8?D}h  
* @param data EcIQ20Z_-  
* @param l \]xYV}(FO  
* @param i gf?^yP ;V  
*/ ;Oy>-Ij5P  
private void insertSort(int[] data, int start, int len) { Oq6n.:8g"  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); T;@>O^  
} ]'(7T#  
} tHbPd.^  
} 9eiBj  
} l,wN@Nk  
N_D+d4@  
堆排序: 4-_lf(# i  
P-[K*/bPw  
package org.rut.util.algorithm.support; "\;wMR{  
Bq@wS\W>b}  
import org.rut.util.algorithm.SortUtil; _eV n#!|  
x-&v|w'  
/**  2p>SB/  
* @author treeroot Y)}%SP>,  
* @since 2006-2-2 +o]BjgG  
* @version 1.0 Aw;vg/#~md  
*/ 'V#ew\  
public class HeapSort implements SortUtil.Sort{ N?0y<S ?!  
C+XZDY(=Z  
/* (non-Javadoc) 4rG 7\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .To:tN#  
*/ <C;> $kX  
public void sort(int[] data) { sdYj'e:N  
MaxHeap h=new MaxHeap(); e oSM@Isu  
h.init(data); |SKG4_wGe  
for(int i=0;i h.remove(); z\>X[yNpA  
System.arraycopy(h.queue,1,data,0,data.length); x9l0UD*+g  
} mo[<4U ks  
uz3pc;0LPY  
private static class MaxHeap{ *Ne&SXg  
c8tC3CrKp=  
void init(int[] data){ h;qy5KS  
this.queue=new int[data.length+1]; ^alZ\!B8  
for(int i=0;i queue[++size]=data; R2THL  
fixUp(size); Wx$q:$h@q  
} ,$zlw\  
} I0+wczW,^  
'<< ~wt  
private int size=0; %aBJ+V F  
:gscW& k  
private int[] queue; KTjlWxD  
,,%:vK+V  
public int get() { VHr7GAmU  
return queue[1]; cuaNAJ  
} ,Bw)n,  
W#I:j: p  
public void remove() { ,M.!z@  
SortUtil.swap(queue,1,size--); qlITQKGG  
fixDown(1); : 5<9/  
} [ 5 2zta  
file://fixdown P3tG#cJ  
private void fixDown(int k) { U!?gdX  
int j; 5}bZs` C  
while ((j = k << 1) <= size) { D%UZ'bHN*  
if (j < size %26amp;%26amp; queue[j] j++; q|i%)V`)-  
if (queue[k]>queue[j]) file://不用交换 =yX&p:-&  
break; r>~d[,^$m4  
SortUtil.swap(queue,j,k); V!77YFen %  
k = j; 4:&qT Y)H  
} in #]3QGV  
} m+2`"1IE[  
private void fixUp(int k) { 4bev* [k  
while (k > 1) { nIQ&gbfO  
int j = k >> 1; 2 ?- 07g  
if (queue[j]>queue[k]) L3GC[$S  
break; PuZs 5J3  
SortUtil.swap(queue,j,k); :q64K?X  
k = j; rp @  
} RF~Ofi  
} ^qGA!_  
X";Z Up  
} E<Dh_K  
6QLQ1k`  
} _gm?FxV:  
n<<=sj$\!  
SortUtil: )R8%'X;U  
\!JS7!+  
package org.rut.util.algorithm; EEs-&  
WAB0e~e:|Q  
import org.rut.util.algorithm.support.BubbleSort; }PQSCl^I  
import org.rut.util.algorithm.support.HeapSort; 0GX10*t.  
import org.rut.util.algorithm.support.ImprovedMergeSort; 4s~HfxYT  
import org.rut.util.algorithm.support.ImprovedQuickSort; T3 9C lH  
import org.rut.util.algorithm.support.InsertSort; X')Zm+  
import org.rut.util.algorithm.support.MergeSort; 3<Z'F}lg  
import org.rut.util.algorithm.support.QuickSort; / $9 :L  
import org.rut.util.algorithm.support.SelectionSort; 9Ue7 ~"=  
import org.rut.util.algorithm.support.ShellSort; A ,-V$[;~D  
~z K@pFeH  
/** ihiuSF<NaQ  
* @author treeroot %U5P}  
* @since 2006-2-2 xshAr J&A  
* @version 1.0 8VuZ,!WH#  
*/ l{6` k<J(  
public class SortUtil { =,4 '"  
public final static int INSERT = 1; K6v $#{$6  
public final static int BUBBLE = 2; inPE/Ux  
public final static int SELECTION = 3; wD6!#t k  
public final static int SHELL = 4; |O(-CDQe  
public final static int QUICK = 5; t1w2u.]  
public final static int IMPROVED_QUICK = 6; UOWIiu  
public final static int MERGE = 7; Ln=>@  
public final static int IMPROVED_MERGE = 8; x*h`VS(?6  
public final static int HEAP = 9; d]CviQUq  
97Zk P=Cq  
public static void sort(int[] data) { h41$|lonU%  
sort(data, IMPROVED_QUICK); Z>x7|Q3CX  
} m0|Ae@g~3  
private static String[] name={ Zj1ZU[BEcL  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 6Q2or n[  
}; ,2,SG/BB  
XLZ j  
private static Sort[] impl=new Sort[]{ B:?#l=FL  
new InsertSort(), df4sOqU  
new BubbleSort(), M'umoZmW0  
new SelectionSort(), QJ#u[hsMFp  
new ShellSort(), &nqdl+|G*  
new QuickSort(), w|}W(=#  
new ImprovedQuickSort(), NtY*sUKRD  
new MergeSort(), 9fP) Fwih  
new ImprovedMergeSort(), =R&)hlm  
new HeapSort() }dX/Y /  
}; (_w %  
4ZI!,lv*  
public static String toString(int algorithm){ tw'hh@7-Y  
return name[algorithm-1]; ?7yQ&p  
} jby~AJf %  
=w ^TcV  
public static void sort(int[] data, int algorithm) { lf%b0na?r  
impl[algorithm-1].sort(data); >f\zCT%cf  
} -BA"3 S  
~$4]HDg  
public static interface Sort { -`!_h[   
public void sort(int[] data); B2~f;zy`  
} Ecxj9h,S  
{sC@N![  
public static void swap(int[] data, int i, int j) { T-9k<,>?  
int temp = data; |N:MZ#};  
data = data[j]; aKv[  
data[j] = temp; 50LHF %  
} A&<?   
} )=jT_?9b   
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