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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。 =Hbf()cN)  
插入排序: 4<V}A j8l  
|*$0~mA  
package org.rut.util.algorithm.support; oy-y Q YX  
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import org.rut.util.algorithm.SortUtil; v\o m  
/** ezb*tN!  
* @author treeroot C#LTF-$])  
* @since 2006-2-2 />n!2'!  
* @version 1.0 `a `>Mtl  
*/ \`;1[m  
public class InsertSort implements SortUtil.Sort{ ;,/4Ry22j-  
0^vz /y1c  
/* (non-Javadoc) 5.$/]2VK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @jCMQYR  
*/ %xrldn%  
public void sort(int[] data) { !bs5w_@  
int temp; mw&'@M_(7  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {T-=&%||  
} B$M4f7  
} 6UI6E)g  
} lVCnu> 8  
$0R5 ]]db)  
} Vi`P &uPF  
KM"BHaSkF  
冒泡排序: jO-T1P']Y  
:T{VCw:*  
package org.rut.util.algorithm.support; gBr /Y}I  
S!rVq,| d  
import org.rut.util.algorithm.SortUtil; ,BFw-A  
xX|f{)<  
/** =QK ucLo  
* @author treeroot 2H1 [ oD[  
* @since 2006-2-2 Z((e-T#,  
* @version 1.0 5"y)<VLJX  
*/ A4g,)  
public class BubbleSort implements SortUtil.Sort{ gO{$p q}  
cJf&R^[T  
/* (non-Javadoc) )t((x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 85e*um^  
*/ _6!iv  
public void sort(int[] data) { lid0 YK-  
int temp; *j( UAVp  
for(int i=0;i for(int j=data.length-1;j>i;j--){ b;FaTm@  
if(data[j] SortUtil.swap(data,j,j-1); 8DX5bB  
} g&{CEfw&  
} ;l^'g}dQ^  
} hBaF^AWW  
} j\"d/{7Q  
Lr 9E02  
} jGoQXiX  
Ii# +JY0k  
选择排序: l$[,V:N  
u{7->[=  
package org.rut.util.algorithm.support; -oTdi0P  
* =*\w\ te  
import org.rut.util.algorithm.SortUtil; L1WvX6  
R13V }yL  
/** U&43/;<,  
* @author treeroot X"vDFE`?  
* @since 2006-2-2 5 `@yX[G  
* @version 1.0 3,EtyJ3[Bh  
*/ 4]FS jVO  
public class SelectionSort implements SortUtil.Sort { !Na@T]J  
el\xMe^SY  
/* ]TJ258P}  
* (non-Javadoc) QeN7~ J  
* C\Z5%2<Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  [aG   
*/ 4T$DQK@e  
public void sort(int[] data) { &bGf{P*Da  
int temp; #3tC"2MZ  
for (int i = 0; i < data.length; i++) { bN6i*) }  
int lowIndex = i; )?I*zc  
for (int j = data.length - 1; j > i; j--) { P,b&F  
if (data[j] < data[lowIndex]) { cltx(C>   
lowIndex = j; qA[cF$CIl)  
} EG|_YW7  
} Q+/P>5O/  
SortUtil.swap(data,i,lowIndex); x0%yz+i{:  
} $d,/(*Y#-  
} GXk |p8  
kkW}:dBl  
} ^x$1Nf  
OI8}v  
Shell排序: \%9QE  
Q,Y^9g"B`~  
package org.rut.util.algorithm.support; 8C? E1fH\  
.|Yn[?(  
import org.rut.util.algorithm.SortUtil; +~* e B  
z_=V6MDM  
/** )| |CU]"b?  
* @author treeroot ?*[35XUd  
* @since 2006-2-2 g7lPQ_A*  
* @version 1.0 x8x-b>|$&<  
*/ yu@Pd3  
public class ShellSort implements SortUtil.Sort{ `~_H\_JpO  
|WpJen*?Y  
/* (non-Javadoc) d(:I~m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m>3\1`ZF~<  
*/ o?c NH  
public void sort(int[] data) { jP0TyhM  
for(int i=data.length/2;i>2;i/=2){ eKLE^`2*@  
for(int j=0;j insertSort(data,j,i); }$sTnea  
} Ck>]+rl  
} #3{{[i(;i  
insertSort(data,0,1); vT @25  
} W`P>vK@=  
Gm3`/!r  
/** :Rnwyj])  
* @param data 2[j`bYNe  
* @param j ep0dT3&  
* @param i <r(D\rmD  
*/ :6&#u.\u  
private void insertSort(int[] data, int start, int inc) { ]"?<y s  
int temp; /1D.Ud^  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); i)Q d>(v  
} G'';VoW=   
} 0P{8s  
} "!fwIEG  
Ed{sC[j=  
} LU8:]zOY  
^QG<_Dm]  
快速排序: aR'~=t&;z1  
ori[[~OyB  
package org.rut.util.algorithm.support; FQE(qltf,  
cct/mX2&~  
import org.rut.util.algorithm.SortUtil; .6I'V3:Kg  
:h/v"2uDN  
/** o}f$?{)|   
* @author treeroot ITEf Q@#jU  
* @since 2006-2-2 =fdW H4  
* @version 1.0 ?A24h !7  
*/ F\ GNLi  
public class QuickSort implements SortUtil.Sort{ -N6ek`  
e\f\CMb  
/* (non-Javadoc) &Vu-*?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PfB9 .f{  
*/ *~*"p)`<  
public void sort(int[] data) { vS[\ j  
quickSort(data,0,data.length-1); ts("(zI1E  
} 9 '(m"c_  
private void quickSort(int[] data,int i,int j){ "DH>4Q] d  
int pivotIndex=(i+j)/2; qn,fx6v4  
file://swap +x/vZXtOK  
SortUtil.swap(data,pivotIndex,j); k,; (`L  
*J >6i2M,u  
int k=partition(data,i-1,j,data[j]); %$Xt1ub6(  
SortUtil.swap(data,k,j); yD`pUE$  
if((k-i)>1) quickSort(data,i,k-1); NS TO\36  
if((j-k)>1) quickSort(data,k+1,j); MZh?MaBz06  
1mR@Bh  
} 52,'8` ]  
/** 6D`.v@  
* @param data -^;,m=4{3  
* @param i Uz[#ye  
* @param j NR-<2 e3  
* @return B[ D s?:  
*/ Bn=YGEvz  
private int partition(int[] data, int l, int r,int pivot) { g[~J107%A  
do{ aGws?<1$  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); x{GFCy7  
SortUtil.swap(data,l,r); so| U&`G  
} )nK+`{;@!  
while(l SortUtil.swap(data,l,r); r(_Fr#Qn  
return l; aD6!x3c/  
} TIaiJvo  
gp H@F X  
} Qv;b$by3  
0AoWw-H6V  
改进后的快速排序: %.Kr`#lCr  
3/(eK%d4Xb  
package org.rut.util.algorithm.support; &_j<! 3*  
!1]jk(Z  
import org.rut.util.algorithm.SortUtil; s$0dLEa9  
X &G]ci  
/** JRE\R&>g  
* @author treeroot nr( C*E  
* @since 2006-2-2 0m\( @2E  
* @version 1.0 HzuG- V  
*/ 'P4V_VMK  
public class ImprovedQuickSort implements SortUtil.Sort { g?Rq .py]!  
qF`]}7"^  
private static int MAX_STACK_SIZE=4096; i~M-V=Zg  
private static int THRESHOLD=10; HW'I$ .  
/* (non-Javadoc) ' dv(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s.KfMJ"u[  
*/ vkM_a}%<  
public void sort(int[] data) { Rt5Xqz\6i  
int[] stack=new int[MAX_STACK_SIZE]; >%n6n! "  
n* .<L  
int top=-1; /5 OQ0{8p  
int pivot; YdB/s1|G  
int pivotIndex,l,r; MI.OOoP3a  
/len8FRf  
stack[++top]=0; beV+3HqB8  
stack[++top]=data.length-1; DiZv sc  
#!_ViG )2^  
while(top>0){ ="Az g8W  
int j=stack[top--]; <A`SC;k\u  
int i=stack[top--]; km`";gUp>  
Z-" NLwt[  
pivotIndex=(i+j)/2; iuM ,a F  
pivot=data[pivotIndex]; rsw= a_S  
x8wsx F  
SortUtil.swap(data,pivotIndex,j); w^7[4u4  
X76rme  
file://partition 1 .o0"  
l=i-1; sqRvnCD!  
r=j; ,ZO?D|M1  
do{ XB:E<I'q!3  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4s"x}c">F  
SortUtil.swap(data,l,r); ' 8Q }pp`  
} NpbZt;%t  
while(l SortUtil.swap(data,l,r); fl4'dv  
SortUtil.swap(data,l,j); =vDDfPR  
`}a-prT<f  
if((l-i)>THRESHOLD){ u%OLXb  
stack[++top]=i; #H5 +8W  
stack[++top]=l-1; 77]lp mC  
} Y 7?q `  
if((j-l)>THRESHOLD){ o0dD  
stack[++top]=l+1; (&_^1  
stack[++top]=j; {7 ](-  
} a'*~E ?b  
whGtVx|zR  
} SK*<H~2  
file://new InsertSort().sort(data); P$@:T[}v  
insertSort(data); 3q6FV7Fv&b  
} >rYMOC~  
/** Fa{[kJ8z  
* @param data "1p, r&}  
*/ KmWd$Qy,  
private void insertSort(int[] data) { KR%NgV+}!0  
int temp; 'mF&`BN}b  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *w6F0>u  
} o+- 0`!yj  
} |f$gQI!XW  
} ]9w TAb  
(I{+ %  
} bcAk$tA2  
KsqS{VVCh  
归并排序: |ss4pN0X  
k[*> nE  
package org.rut.util.algorithm.support; 9w1`_r[J  
kp6&e  
import org.rut.util.algorithm.SortUtil; i|S/g.r  
$2Bll5!]  
/** v9#F\F/  
* @author treeroot RS2uk 7MB  
* @since 2006-2-2 bY~V?yNgKM  
* @version 1.0 I y5)SZ'  
*/ \"Qa)1 |  
public class MergeSort implements SortUtil.Sort{ w.+G+ r=  
~{{7y]3M-  
/* (non-Javadoc) `84,R!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V%`\x\Xat  
*/ Ac}5,  
public void sort(int[] data) { H}8kku>7  
int[] temp=new int[data.length]; ]7q|) S\  
mergeSort(data,temp,0,data.length-1); EK\xc'6M  
} 3]7j, 1^  
vSCJ xSt#e  
private void mergeSort(int[] data,int[] temp,int l,int r){ 8LY^>.  
int mid=(l+r)/2; )d{fDwrx1  
if(l==r) return ; [<jU$93E  
mergeSort(data,temp,l,mid); Yq{R*HO  
mergeSort(data,temp,mid+1,r); 8RS@YO  
for(int i=l;i<=r;i++){ @R`Ao9n9V  
temp=data; 0])[\O`j  
} 8}Q 2!,9Q  
int i1=l; bH%d*  
int i2=mid+1; {.Brh"yC  
for(int cur=l;cur<=r;cur++){ I:;umyRH  
if(i1==mid+1) ? 0:=+%.  
data[cur]=temp[i2++]; YmHu8H_Q  
else if(i2>r) m.lzkS]P  
data[cur]=temp[i1++]; "}S6a?]V  
else if(temp[i1] data[cur]=temp[i1++]; !';;q  
else ( yB]$  
data[cur]=temp[i2++]; Qn;,OB k  
} ghTue*A  
} N7^sn!JB  
T5dnj&N ]  
} 0u +_D8G  
` :Oje  
改进后的归并排序: Ian+0 ?`e  
yIWgC[  
package org.rut.util.algorithm.support; w/9%C(w6  
K.b :ae^k  
import org.rut.util.algorithm.SortUtil; c/l^;6O/!\  
\4O_@d`A  
/** C>QWV[F  
* @author treeroot 'k[vcnSz\/  
* @since 2006-2-2 ,G[Y< ~Hy  
* @version 1.0 a&7uRR26  
*/  _ Ewkb  
public class ImprovedMergeSort implements SortUtil.Sort { &7r a  
b&9~F6aM  
private static final int THRESHOLD = 10; StiWa<"c  
[n3@*)q's  
/* q w @g7  
* (non-Javadoc) U&#`5u6'j  
* {T DZDH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3`Xzp  
*/ aYc^ 9*7  
public void sort(int[] data) { !.499H3  
int[] temp=new int[data.length]; !1Ht{cA0  
mergeSort(data,temp,0,data.length-1); wEQZ9?\  
} msQ?V&+<  
d)d0,fi?-  
private void mergeSort(int[] data, int[] temp, int l, int r) { v[)8 1uY  
int i, j, k; TYCjVxfu$  
int mid = (l + r) / 2; Q(x/&]7=V  
if (l == r) ZVrZkd `  
return; >Sb3]$$  
if ((mid - l) >= THRESHOLD) s@ 6Jz\<E  
mergeSort(data, temp, l, mid); "/%o'Fq  
else 2WE01D9O  
insertSort(data, l, mid - l + 1); 1*.*\4xo  
if ((r - mid) > THRESHOLD) }]=@Y/p  
mergeSort(data, temp, mid + 1, r); L-%'jR  
else m^w{:\p  
insertSort(data, mid + 1, r - mid); w: mm@8N  
8Y:x+v5  
for (i = l; i <= mid; i++) { }T}xVd0  
temp = data; (O& HCT|  
} yR"mRy1  
for (j = 1; j <= r - mid; j++) { lNTbd"}$:  
temp[r - j + 1] = data[j + mid]; 5qFHy[I A  
} ZH~Wn#Wp  
int a = temp[l]; DcE4r>8B  
int b = temp[r]; |7${E^u  
for (i = l, j = r, k = l; k <= r; k++) { #aiI]'  
if (a < b) { X8wtdd]64  
data[k] = temp[i++]; KN>h*eze  
a = temp; _hMFmI=r[  
} else { /QQjb4S}  
data[k] = temp[j--]; R iFUa $  
b = temp[j]; T`9nY!  
} 6h0}ZM  
} %pqB/  
} Zay%QNsb  
$EzWUt  
/** {d.K)8\  
* @param data ls~9qkAyLx  
* @param l #)3 B  
* @param i "2p\/VfA  
*/ ~YByyJG   
private void insertSort(int[] data, int start, int len) { dnh~An 9  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Wfy+9"-;s  
} ^x_$%8  
} E'NS$,h  
} 2jxIr-a1G  
} }(,{^".[}  
h\Q@zR*0a  
堆排序: Av4(=}M}@  
) $0>L5d:  
package org.rut.util.algorithm.support; mu5r4W47  
HJP~ lg  
import org.rut.util.algorithm.SortUtil; |dDKO  
ZT8LMPC  
/** &9"Y:),  
* @author treeroot }6=? zs}  
* @since 2006-2-2 t0Jqr)9}6  
* @version 1.0 ?Iq{6O>D.  
*/ UcH#J &r  
public class HeapSort implements SortUtil.Sort{ [ako8  
wvxsn!Ao&=  
/* (non-Javadoc) {R_ <m$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0Ue~dVrM(?  
*/ Uv652DC  
public void sort(int[] data) { \A)Pcc}7  
MaxHeap h=new MaxHeap(); ` U-vXP  
h.init(data);  m]H]0T  
for(int i=0;i h.remove(); `5rfO6 ;  
System.arraycopy(h.queue,1,data,0,data.length); *adznd  
} `r-3"or/$  
$cU7)vmK`  
private static class MaxHeap{ B2|0.G|[j  
X{<taD2~  
void init(int[] data){ ]Qa|9G,b  
this.queue=new int[data.length+1]; WW2hwB (  
for(int i=0;i queue[++size]=data; i0J`{PbI  
fixUp(size); %wI)uJ2  
} ;8^(Z  
} u?H.Z  
U3` ?Z`i(  
private int size=0; wNn=JzP  
pf%; *  
private int[] queue; F^`+.G\  
Nwe-7/Q  
public int get() { ?%Ww3cU+J  
return queue[1]; X8-x$07)  
} ?~(#~3x  
@|bJMi  
public void remove() { mx UyD[|  
SortUtil.swap(queue,1,size--); /Ov1eQBNG  
fixDown(1); R/kJUl6HEl  
} /lh1sHgD  
file://fixdown WtaOf_  
private void fixDown(int k) { `j!_tE`  
int j; y7%SHYC p[  
while ((j = k << 1) <= size) { gVI`&W__,  
if (j < size %26amp;%26amp; queue[j] j++; %QEyvl4  
if (queue[k]>queue[j]) file://不用交换 L]u^$=rI  
break; o)]O  
SortUtil.swap(queue,j,k); B2'TRXIm1U  
k = j; l2}X\N&q  
} |\/\FK]?]  
} =8%*Rrj^  
private void fixUp(int k) { 1N:~5S}s>  
while (k > 1) { i]L=M 5^C  
int j = k >> 1; rHk,OC  
if (queue[j]>queue[k]) WiZTE(NM`  
break; .l5-i@=W  
SortUtil.swap(queue,j,k); . UH'U\M  
k = j; 4>a(!h t  
} "tK|/R+  
} ;R Jv7@  
qxsHhyB_n;  
} I|qhj*_C  
oveK;\7/m  
} 9q 2 vT^  
6EO@ Xf7,  
SortUtil: VX>j2Z'  
5Pxx)F9]  
package org.rut.util.algorithm; .Eb]}8/}E  
~PpDrJ; Va  
import org.rut.util.algorithm.support.BubbleSort; :K"~PrHm  
import org.rut.util.algorithm.support.HeapSort; ~fb#/%SV  
import org.rut.util.algorithm.support.ImprovedMergeSort; ZoSyc--Bv  
import org.rut.util.algorithm.support.ImprovedQuickSort; BV }CmU&DA  
import org.rut.util.algorithm.support.InsertSort; YOj&1ymBZ  
import org.rut.util.algorithm.support.MergeSort; ~!Nw]lb!  
import org.rut.util.algorithm.support.QuickSort; 2|d^#8)ZC  
import org.rut.util.algorithm.support.SelectionSort; >cg)Nq D  
import org.rut.util.algorithm.support.ShellSort; nk7>iK!i  
9V[}#(f$  
/** gIusp917  
* @author treeroot 0@{0#W3R  
* @since 2006-2-2 4>LaA7)v  
* @version 1.0 q=D8 Nz  
*/ &;)B qqXc  
public class SortUtil { K~I?i/P=z  
public final static int INSERT = 1; dr+(C[=  
public final static int BUBBLE = 2; nE*S3  
public final static int SELECTION = 3; p<#aXs jy  
public final static int SHELL = 4; LExm#T`  
public final static int QUICK = 5; !{+.)%d'g  
public final static int IMPROVED_QUICK = 6; '`. -75T  
public final static int MERGE = 7; ,\cV,$  
public final static int IMPROVED_MERGE = 8; i$Kx@,O8t  
public final static int HEAP = 9; /3K)$Er  
O9/)_:Wdh  
public static void sort(int[] data) { .{*l,  
sort(data, IMPROVED_QUICK); M \  
} -!\%##r7~  
private static String[] name={ P=KhR&gwV~  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" x<Gjr}  
}; 8ih_S2Cd  
D7JrGaF{  
private static Sort[] impl=new Sort[]{ $u'"C|>8  
new InsertSort(), ;UM(y@  
new BubbleSort(), S50}]5K  
new SelectionSort(), VltM{-k^  
new ShellSort(), 6)ln,{  
new QuickSort(), ~:o$}`mW  
new ImprovedQuickSort(), 'SoBB:  
new MergeSort(), 5`+9<8V  
new ImprovedMergeSort(), >1;jBx>Qy%  
new HeapSort() .UQ|k,,t  
}; (d D7"zQ  
.%e>>U>F  
public static String toString(int algorithm){ ~<9e }J  
return name[algorithm-1]; J -Lynvqm  
} kp*!  
JGTsVa2  
public static void sort(int[] data, int algorithm) { SA&(%f1d  
impl[algorithm-1].sort(data); naH(lz|v  
} =_zo  
8.N`^Nj 1  
public static interface Sort { _ahp7-O  
public void sort(int[] data); v[{7\Hha  
} -3v\ c~  
O6)Po  
public static void swap(int[] data, int i, int j) { .m l\z5  
int temp = data; KsE$^`  
data = data[j]; zow8 Q6f  
data[j] = temp; V| kN 1 A  
} &]RE 5!  
} X' 5R4j  
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