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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。 ]ZR}Pm/CA  
插入排序: SA{noM  
:|\[a0ZL  
package org.rut.util.algorithm.support; Cl6P,C  
`y3*\l  
import org.rut.util.algorithm.SortUtil; -M6#,Ji  
/** /9b+I/xY"  
* @author treeroot n  +v(t  
* @since 2006-2-2 "]T1DG"  
* @version 1.0 a#D \8;  
*/ + L [a  
public class InsertSort implements SortUtil.Sort{ ?`= <*{_o  
'QSj-  
/* (non-Javadoc) =Q,D3F -+f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bV$g]->4e  
*/ uK%0,!q  
public void sort(int[] data) { \J(kevX  
int temp; _TwE ym.V  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |.OS7Gt?  
} / z m+  
} w-];!;%  
} h e=A%s  
[jz@d\k$_  
} HQZJK82  
}0[<xo>K  
冒泡排序: P^aNAa  
j ];#=+  
package org.rut.util.algorithm.support; EG8%X"p  
q*K[?  
import org.rut.util.algorithm.SortUtil; ,\ -4X  
18^K!:Of  
/** TH"<6*f2L  
* @author treeroot u g_c}Nv=Y  
* @since 2006-2-2 6W< Ig;  
* @version 1.0 j/8q  
*/ CZ!gu Y=  
public class BubbleSort implements SortUtil.Sort{ !5qV}5  
w7E#mdW  
/* (non-Javadoc) C).+h7{nd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~OMo$qt`lP  
*/ s"`Oj5  
public void sort(int[] data) { (zPsA  
int temp; _b`/QSL  
for(int i=0;i for(int j=data.length-1;j>i;j--){ N(e>]ui  
if(data[j] SortUtil.swap(data,j,j-1); a51}~V1  
} ~Qd|.T  
} au E8 ^|  
} ,V9 r2QY  
} HXN. ,[  
vA{DF{S 4  
} aI>F8R?  
!gL1  
选择排序: G?^w <  
B qo#cnlG  
package org.rut.util.algorithm.support; G%junS'zt  
as73/J6  
import org.rut.util.algorithm.SortUtil; ec,Bu7'8  
\=[38?QOY  
/** _H@8qR  
* @author treeroot (QdLz5\  
* @since 2006-2-2 cSBS38>  
* @version 1.0 B1j^qoC.5  
*/ IrIW>r} -  
public class SelectionSort implements SortUtil.Sort { l*Q OM  
V`0Y p  
/* 9.:&u/e  
* (non-Javadoc) B~E>=85z  
* v8 II=9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) </B:Zjn  
*/ Uw?25+[b  
public void sort(int[] data) { yO/'}FD  
int temp; &p+2Vz{  
for (int i = 0; i < data.length; i++) { *'BI=* `  
int lowIndex = i; pJ x H  
for (int j = data.length - 1; j > i; j--) { O) )j  
if (data[j] < data[lowIndex]) {  T4J WZ  
lowIndex = j; b)>l7nOc  
} <O41 M\,  
} QO>)ug+  
SortUtil.swap(data,i,lowIndex); -M+o;  
} /IG3>|R  
} np\*r|U  
f7a"}.D $  
} [U$`nnp  
^U^K\rq 1u  
Shell排序: 3*F|`js"  
K<k\A@rv8H  
package org.rut.util.algorithm.support; f*EDSJu\  
9%dO"t$-q  
import org.rut.util.algorithm.SortUtil; -dw/wHf"  
-%Jm-^F I  
/** 5! ]T%.rM  
* @author treeroot S] 4RGWn  
* @since 2006-2-2 r!^VCA  
* @version 1.0 ?'>[n m  
*/ ti<;>P[4  
public class ShellSort implements SortUtil.Sort{ % C)|fDwN  
6J965eM'[  
/* (non-Javadoc) &m`@6\N(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <899r \  
*/ X;{U?`b-  
public void sort(int[] data) { ;T<'GP'/r  
for(int i=data.length/2;i>2;i/=2){ mp0s>R  
for(int j=0;j insertSort(data,j,i); SwO8d;e  
} J=H8^4M  
} ()fYhk|W  
insertSort(data,0,1); dCWq~[[  
} T2to!*T  
SIzA0  
/** >?{> !#1  
* @param data orEb+  
* @param j pW&8 =Ew  
* @param i vX*kvEG  
*/ C?rb}(m  
private void insertSort(int[] data, int start, int inc) { ']sIU;h3  
int temp; ZV!*ZpTe~  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); HmV JkkksJ  
} #b1/2=PA  
} _Ry  
} @iVEnb.'  
ZO\bCrk  
} <2\Q Y  
2~)q080jh  
快速排序: _2<k,Dl;RY  
j2|UuWU  
package org.rut.util.algorithm.support; Iy2AJ|d.  
>SS979  
import org.rut.util.algorithm.SortUtil; &qV_|f;  
QjsN7h&%  
/** pS!N<;OWr  
* @author treeroot ks8xxY  
* @since 2006-2-2 F'55BY*!  
* @version 1.0 ([hd  
*/ U6M&7 l8  
public class QuickSort implements SortUtil.Sort{ r+n hm"9  
s=XqI@  
/* (non-Javadoc) Uc j>gc=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ibgF,N  
*/ <h~_7Dn  
public void sort(int[] data) { "'c =(P  
quickSort(data,0,data.length-1); sv*xO7D.  
} g1q%b%8T  
private void quickSort(int[] data,int i,int j){ rgu7g  
int pivotIndex=(i+j)/2; n{E + r  
file://swap 1gH>B5`  
SortUtil.swap(data,pivotIndex,j); Byns6k  
oX-h7;SD  
int k=partition(data,i-1,j,data[j]); {Yt i  
SortUtil.swap(data,k,j); 3 J\&t4q  
if((k-i)>1) quickSort(data,i,k-1); 5{#ya 2  
if((j-k)>1) quickSort(data,k+1,j); WoWBZ;+U  
U&6f:IV  
} gk"J+uM  
/** 9riKSp:5  
* @param data ="[6Z$R  
* @param i m6 a @Y<  
* @param j Va\?"dH>M  
* @return !xD_=O  
*/ 28o!>*  
private int partition(int[] data, int l, int r,int pivot) { SVT'fPm1M  
do{ }/z\%Y  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); wk6tdY{&s  
SortUtil.swap(data,l,r); Oc^bbC  
} 4Bq4d.0  
while(l SortUtil.swap(data,l,r); .w~zW*M0  
return l; OSCeTkR  
} MtK5>mhZI`  
;gW?Fnry;  
} nB , &m&  
b .v^:M  
改进后的快速排序: 9,Ug  
(2%z9W  
package org.rut.util.algorithm.support; ?;Ge/~QU5  
b%I2ig  
import org.rut.util.algorithm.SortUtil; C9 cQ} j:  
96CC5  
/** Fy]j33E  
* @author treeroot %D*yXNsY  
* @since 2006-2-2 3Y=?~!,Jk  
* @version 1.0 ht^xc c  
*/ rKWkT"  
public class ImprovedQuickSort implements SortUtil.Sort { Psu*t%nQ?A  
24/ ^_Td  
private static int MAX_STACK_SIZE=4096; 5I@2UvV8  
private static int THRESHOLD=10; @c{b\is2  
/* (non-Javadoc) o*|j}hnbv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U*Pi%J  
*/ r1X\$&  
public void sort(int[] data) { m_1BB$lyP2  
int[] stack=new int[MAX_STACK_SIZE]; 38O_PK  
ZIM 5$JdCv  
int top=-1; ?!kPW^gD  
int pivot; ]+i~Cbj  
int pivotIndex,l,r; i^DZK&B@u  
{KalVZX2R  
stack[++top]=0; SgPvQ'\  
stack[++top]=data.length-1; EXYr_$gRs  
W%cJ#R[o  
while(top>0){ Zae$M0)  
int j=stack[top--]; HWT^u$a"  
int i=stack[top--]; XqTDLM&  
E:ocx2dp  
pivotIndex=(i+j)/2; = eDi8A*~  
pivot=data[pivotIndex]; n6 a=(T  
/ L/hR4  
SortUtil.swap(data,pivotIndex,j); /0qLMlL$  
&\GB_UA  
file://partition \LpR7D  
l=i-1; 7q[a8rUdh  
r=j; '`Iuf\  
do{ 7{e*isV  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 2Fsv_t&*>  
SortUtil.swap(data,l,r); 4q\bnt  
} "i;c)ZP  
while(l SortUtil.swap(data,l,r); Do5)ilt  
SortUtil.swap(data,l,j); *R6Ed  
V0x;*)\PYm  
if((l-i)>THRESHOLD){ rSvQarT  
stack[++top]=i; &?#G)suP  
stack[++top]=l-1; vmZyvJSE  
} d% :   
if((j-l)>THRESHOLD){ /^<Uy3F[p  
stack[++top]=l+1; O o+pi$W  
stack[++top]=j; UMbM3m=\  
} L) ]|\|  
v5;V$EGD&  
} f?A1=lm~  
file://new InsertSort().sort(data); na1*^S`[  
insertSort(data); I ;Sm<P7*  
} ? @Y'_f  
/** cRhu]fv()  
* @param data &%Lps_+fJ  
*/ Qs5^kddz=  
private void insertSort(int[] data) { <r'l5|er  
int temp; ^xwnX=Np  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /!mF,oR!  
} CQx#Xp>=s  
} >3a<#s{%  
} ~SRK}5E  
3,<$z1Jm  
} vC9Qe ]f  
|8m;}&r$  
归并排序: s8/y|HN^  
;NHZD  
package org.rut.util.algorithm.support; ;L458fYs  
T!*lTzNHm  
import org.rut.util.algorithm.SortUtil; 6RLYpQ$+  
Nf<mgOAT1  
/** ?(4E le  
* @author treeroot /RzL,~]  
* @since 2006-2-2 xQ=sZv^M  
* @version 1.0 |99/?T-QW  
*/ eZMDtB  
public class MergeSort implements SortUtil.Sort{ jLRh/pbz4  
[Grd?mc#  
/* (non-Javadoc) %|:Gn)8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +I {ZW}rA  
*/ D 1Q@4  g  
public void sort(int[] data) { TUQ+?[  
int[] temp=new int[data.length]; ,MxTT!9Su  
mergeSort(data,temp,0,data.length-1); NM;0@ o  
} ;ctJ9"_g  
5QjM,"`mp  
private void mergeSort(int[] data,int[] temp,int l,int r){ ST#MCh-00  
int mid=(l+r)/2; + S^OzCGk  
if(l==r) return ; 0 xUw}T6  
mergeSort(data,temp,l,mid); O#g'4 S  
mergeSort(data,temp,mid+1,r); e bSG|F  
for(int i=l;i<=r;i++){  TM1isZ  
temp=data; M6 W {mek  
} qBKRm0<W  
int i1=l; 1'[RrJ$Q  
int i2=mid+1;  0#AS>K5  
for(int cur=l;cur<=r;cur++){ (|EnRk-E  
if(i1==mid+1) ]{Ytf'bG  
data[cur]=temp[i2++]; 4Y)rgLFj  
else if(i2>r) NYoh6AR  
data[cur]=temp[i1++]; s^@?+<4:  
else if(temp[i1] data[cur]=temp[i1++]; I$Bu6x!  
else &?R2zfcM  
data[cur]=temp[i2++]; .S l{m[nV8  
} \~]HfDu  
} *oC],4y~D  
QU]& q`GE  
} fZqqU|tq  
&p)]Cl/`  
改进后的归并排序: xpWx6  
X2? ^t]-N  
package org.rut.util.algorithm.support; 7<<-\7`  
5,I|beM  
import org.rut.util.algorithm.SortUtil; [\ M$a|K  
s[ ze8:  
/** yM *-e m  
* @author treeroot @%7IZg;P6  
* @since 2006-2-2 ET_a>]<mv  
* @version 1.0 ?*36&Iq}  
*/ ^u? #fLr  
public class ImprovedMergeSort implements SortUtil.Sort { []'gIF  
8!~8:?6n  
private static final int THRESHOLD = 10; g[]UM;D*  
H]6i1j  
/* 2qw-:  
* (non-Javadoc) ''{REFjK7  
* vr,8i7*0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `OL@@`'^{S  
*/ Xu4C*]A>  
public void sort(int[] data) { dr|>P*  
int[] temp=new int[data.length]; B}PT-S1l  
mergeSort(data,temp,0,data.length-1); "$->nC.  
} wx a?.  
 kYls jM  
private void mergeSort(int[] data, int[] temp, int l, int r) { 0pO{{F  
int i, j, k; T<hS  
int mid = (l + r) / 2; qqL :#]lV5  
if (l == r) #JmVq-)  
return; CFm( yFk  
if ((mid - l) >= THRESHOLD) q&/<~RC*  
mergeSort(data, temp, l, mid); D5o[z:V7"  
else S>-x<'Os  
insertSort(data, l, mid - l + 1); mv5=>Xc6  
if ((r - mid) > THRESHOLD) +VJS/  
mergeSort(data, temp, mid + 1, r); laR cEXj  
else #Tz$ona  
insertSort(data, mid + 1, r - mid); 4pvT?s>68  
w\"~ *(M  
for (i = l; i <= mid; i++) { -C]k YQ  
temp = data; #41xzN  
} 9O8na 'w  
for (j = 1; j <= r - mid; j++) { @/MI Oxg[  
temp[r - j + 1] = data[j + mid]; /6=IL  
} UZ5O%SF  
int a = temp[l]; skd3E4  
int b = temp[r]; Q[j'FtP%  
for (i = l, j = r, k = l; k <= r; k++) { -B`Nkc  
if (a < b) { scf.> K2  
data[k] = temp[i++]; (E{>L).~  
a = temp; WH>=*\  
} else { <G};`}$a  
data[k] = temp[j--]; U$*AV<{%   
b = temp[j]; Jy#c 6  
} dRdI('  
} wzXIEWJ  
} ?QDHEC62  
y*F !k{P  
/** wbIgZ]o!/;  
* @param data JPH! .@  
* @param l <r9L-4  
* @param i 9J3@8h p  
*/ 4YuJ-  
private void insertSort(int[] data, int start, int len) { !lVOZ %  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ^(j}'p,  
} mY1I{ '.  
} x7<2K(  
} .wU0F  
} * ~D|M  
|r U?  
堆排序: CPW^pGT+i  
2)~`.CD?L  
package org.rut.util.algorithm.support; M_I.Y1|  
Bi.,@7|>  
import org.rut.util.algorithm.SortUtil; j8cIpbp8x  
^n|yfvR  
/** 3X;k c>  
* @author treeroot  !^yH]v  
* @since 2006-2-2 <y S|\Z|  
* @version 1.0 ^n?`l ^9c$  
*/ =JkPE2mU  
public class HeapSort implements SortUtil.Sort{ diz=|g=w  
Wbq0K6X  
/* (non-Javadoc) 5*O*p `Ba  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L@5j? N?F  
*/ t)4><22of  
public void sort(int[] data) { ?XlPK Y  
MaxHeap h=new MaxHeap(); %.h&W;  
h.init(data); J dM0f!3  
for(int i=0;i h.remove(); rAn:hR{  
System.arraycopy(h.queue,1,data,0,data.length); +]3kcm7B  
} _xefFy  
'mELW)S  
private static class MaxHeap{ Hk1[0)  
O"M2*qiH  
void init(int[] data){ >\7M f@c  
this.queue=new int[data.length+1]; V&h{a8xa$  
for(int i=0;i queue[++size]=data; *8bj3A]vf  
fixUp(size); VMee"'08  
} 2q NA\-0i>  
} [.(,v n?6  
|JL?"cc  
private int size=0; ^ Fnag]qQ  
Ka_g3  
private int[] queue; S4_C8  
gkM Q=;Nn  
public int get() { $} @gR] Z  
return queue[1]; :R{pV7<O  
} kR+7JUq]  
6!`GUU  
public void remove() { n)Zu>  
SortUtil.swap(queue,1,size--); YMU2^,3  
fixDown(1); %/4_|.8u  
} ]vflx^<?  
file://fixdown xZ]QT3U+  
private void fixDown(int k) { Yyr qO^9m  
int j; k-N}tk/5  
while ((j = k << 1) <= size) { y;if+  
if (j < size %26amp;%26amp; queue[j] j++; IAHQT < ]  
if (queue[k]>queue[j]) file://不用交换 Hl#?#A5  
break; T,oZaJ<  
SortUtil.swap(queue,j,k); Nz77" kC  
k = j; dq{+-XaEk  
} 7>E>`Nc6  
} GGs7]mhA  
private void fixUp(int k) { @<jm+f"MP  
while (k > 1) { j"A<qI  
int j = k >> 1; rJT YCe1*  
if (queue[j]>queue[k]) `-!kqJ  
break; I7#^'/  
SortUtil.swap(queue,j,k); 3xz|d`A  
k = j; *E wDwS$$  
} .k-t5d  
} Xw#"?B(M]  
b['v0x  
} noso* K7  
vdcPpj^d5  
} B k*Rz4Oa  
=.qX u+  
SortUtil: -@tj0OHg  
Sy/Z}H  
package org.rut.util.algorithm; *3KSOcQ  
rEMe=>^   
import org.rut.util.algorithm.support.BubbleSort; OQIr"  
import org.rut.util.algorithm.support.HeapSort; %L|xmx!c  
import org.rut.util.algorithm.support.ImprovedMergeSort; 6)PnzeYW  
import org.rut.util.algorithm.support.ImprovedQuickSort; vqAEF^HYry  
import org.rut.util.algorithm.support.InsertSort; js9^~:Tw  
import org.rut.util.algorithm.support.MergeSort; PfsUe,*  
import org.rut.util.algorithm.support.QuickSort; @6 a'p  
import org.rut.util.algorithm.support.SelectionSort; :}R,a=N  
import org.rut.util.algorithm.support.ShellSort; y=aWSb2y'  
e*y l_iW  
/** gN2oUbf8  
* @author treeroot @uz(h'~  
* @since 2006-2-2 s f.z(o  
* @version 1.0 lNsdbyV'  
*/  )$GCur~  
public class SortUtil { Cw"[$E'J  
public final static int INSERT = 1; I)kc[/^j$  
public final static int BUBBLE = 2; =A*a9c2  
public final static int SELECTION = 3; N^M6*,F,J  
public final static int SHELL = 4; 1% C EUE  
public final static int QUICK = 5; {r~=mQ  
public final static int IMPROVED_QUICK = 6; ?t<g|H/|6  
public final static int MERGE = 7; Na4O( d`  
public final static int IMPROVED_MERGE = 8; lCgzQZ  
public final static int HEAP = 9; yk'L_M(=  
N4z[=b>  
public static void sort(int[] data) { Peo-t*-06  
sort(data, IMPROVED_QUICK); L]%!YP\<T  
} ORM3o ucP  
private static String[] name={ ~"_!O+Pj  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" C23p1%#1  
}; Vh1y]#w  
$@vB<(sk  
private static Sort[] impl=new Sort[]{ 052Cf dq  
new InsertSort(), ~ MsHV%  
new BubbleSort(), !RPE-S  
new SelectionSort(), Vc;g$Xr[  
new ShellSort(), M~7Cb>%<  
new QuickSort(), VC0Tqk  
new ImprovedQuickSort(),  "UreV  
new MergeSort(), Ke:WlDf  
new ImprovedMergeSort(), KLW>O_+   
new HeapSort() +_kA&Q(t  
}; V7}'g6X  
c&P/v#U_  
public static String toString(int algorithm){ 1V9AnzwX  
return name[algorithm-1]; E=CAWj\  
} MkHkM  
JS/ChoU  
public static void sort(int[] data, int algorithm) { lo1bj*Y2  
impl[algorithm-1].sort(data); EP"Z58&$R  
} op/_ :#&'  
^eyVEN  
public static interface Sort { OSfT\8YA  
public void sort(int[] data); ,(-V<>/*.|  
} ~1E!Co  
.jg@UAK  
public static void swap(int[] data, int i, int j) { 3~7!=s\v  
int temp = data; EJ>rW(s  
data = data[j]; @/?i|!6  
data[j] = temp; b`$qKO  
} B'Jf&v  
} {* :^K\-  
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