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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。 %o-*~GQ@B  
插入排序: eF9LZ"-s  
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package org.rut.util.algorithm.support; `?:'_K i  
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import org.rut.util.algorithm.SortUtil; o?>)CAo  
/** 4dO>L"  
* @author treeroot +x1sV*S  
* @since 2006-2-2 Q]\x O/  
* @version 1.0 F]&9Lp} "  
*/ shD$,! k  
public class InsertSort implements SortUtil.Sort{ *UTk. :G5  
z9gZ/d   
/* (non-Javadoc) A /MOY@%G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >v(Xc/oI  
*/ x-"7{@lz  
public void sort(int[] data) { WrV|<%EQh  
int temp; <rkF2-K,  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Y\rKw!u_!  
} = #`FXO1C  
} =y<Fz*aA  
} #(7OvW+y  
)}EwEM  
} o,d:{tt  
z w0p}  
冒泡排序: *Hs5MXNu  
?VJ Fp^Ra  
package org.rut.util.algorithm.support; 5\pizD/17  
DP?gozm  
import org.rut.util.algorithm.SortUtil; |i|O9^*%  
%c&h:7);  
/** , vR4x:W  
* @author treeroot qRr;&M &t_  
* @since 2006-2-2 % $J^dF_0  
* @version 1.0 [P<oyd@#  
*/ <fP|<>s$@1  
public class BubbleSort implements SortUtil.Sort{ Ft07>E$/Q^  
{P*RA'H3G  
/* (non-Javadoc) D;Z\GnD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H.YntFtD'  
*/ y+c+/L8  
public void sort(int[] data) { 8garRB{  
int temp; cc@y  
for(int i=0;i for(int j=data.length-1;j>i;j--){ \E n^Vf  
if(data[j] SortUtil.swap(data,j,j-1); G-Y8<mEh  
} OH&&d=~  
} +] FdgmK:  
} NpSS/rd $  
} 3t8VH`!mL{  
se_1 wCYz  
} z+;+c$X  
Nkc=@l {  
选择排序: SlmgFk!r!  
LnLuWr<;}  
package org.rut.util.algorithm.support; d^ w6_  
DRal{?CH  
import org.rut.util.algorithm.SortUtil; SI-s:%O  
^W;\faG  
/** y<kW2<?  
* @author treeroot V4_ZBeWA  
* @since 2006-2-2 3d[fP#NY7  
* @version 1.0 BjSLbw-C  
*/ 2WqjNqx)6  
public class SelectionSort implements SortUtil.Sort { {ymD.vf=9+  
K;Fy&p^d  
/* rxt)l  
* (non-Javadoc) ?nE<Aig  
* uq'T:d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A3MVNz$wo"  
*/ 86oa>#opU  
public void sort(int[] data) { ?m0|>[j  
int temp; Nv w'[?m  
for (int i = 0; i < data.length; i++) { !ouJ3Jn   
int lowIndex = i; sZ_+6+ :  
for (int j = data.length - 1; j > i; j--) { CnN PziB  
if (data[j] < data[lowIndex]) { ~8Z)e7 j  
lowIndex = j; `C$.  
} !2=< MO  
} Ns Pt1_ Y8  
SortUtil.swap(data,i,lowIndex); n' &:c}zKO  
} `-IX"rf  
} YB*I'm3q  
ibha`  
} T:dV[3  
l%L..WCT]  
Shell排序: cJ=0zEv  
(} ?")$.  
package org.rut.util.algorithm.support; <A<N? `"  
/d*d'3{c  
import org.rut.util.algorithm.SortUtil; #L ffmS  
bu$YW'  
/** t[ cHdI  
* @author treeroot MDAJ p>o  
* @since 2006-2-2 "dQ02y  
* @version 1.0 &]tZ6  
*/ 0w)Gb}o$  
public class ShellSort implements SortUtil.Sort{ ' >4 H#tu  
WS6'R    
/* (non-Javadoc)  Jpm=V*P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Mh3Tfp  
*/ XcL jUz?  
public void sort(int[] data) { 9Zw{MM]  
for(int i=data.length/2;i>2;i/=2){ Yv>kToa\^  
for(int j=0;j insertSort(data,j,i); OO#_ 0qK  
} y\k#83aU|  
} SJ8Ax_9{q  
insertSort(data,0,1); ~Z-o2+xA  
} C%H{"  
)B)e cJJ_  
/** F=EG#<@u  
* @param data juIi-*R!  
* @param j OXp(rJ*bK  
* @param i hh#p=Y(f  
*/ 9X/]O<i,Es  
private void insertSort(int[] data, int start, int inc) { Kjzo>fIC{  
int temp; n` M!K:Pq  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); UB^OMB-W.m  
} gjFpM.D-.  
} 0i[v,eS  
} y!eT>4Oyg  
/0CS2mLC  
} *!NxtB!LC  
?sD4S   
快速排序: OGcq]ue  
5v5)vv.kd  
package org.rut.util.algorithm.support; p4-UW;Xu  
n37P$0  
import org.rut.util.algorithm.SortUtil; :<gC7UW  
YxowArV}uz  
/** Y<qWG 8X  
* @author treeroot 4M*Z1  
* @since 2006-2-2 ?*LVn~y  
* @version 1.0 6pP:Q_U$  
*/ p?-qlPl  
public class QuickSort implements SortUtil.Sort{ C2 4"H|D  
'Y2ImSWj  
/* (non-Javadoc) z;wOtKl5r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N2 4J!L  
*/ n,D&pl9f  
public void sort(int[] data) { g^I?u$&E  
quickSort(data,0,data.length-1); hU'h78bt(  
} Xrl# DN  
private void quickSort(int[] data,int i,int j){ L0.F }~S  
int pivotIndex=(i+j)/2; X~g U$  
file://swap  T_)G5a  
SortUtil.swap(data,pivotIndex,j); *(E]]8o  
BD ,J4xH;  
int k=partition(data,i-1,j,data[j]); tJ$gH;  
SortUtil.swap(data,k,j); 2Y>#FEW/  
if((k-i)>1) quickSort(data,i,k-1); U'@#n2p:k  
if((j-k)>1) quickSort(data,k+1,j); +N}yqgE  
;"B@QPX  
} []:&WA 9N  
/** \r1nMw3&  
* @param data LIE5of  
* @param i d0V*[{  
* @param j 7y4jk  
* @return \&/V p`  
*/ X6<Ds'I  
private int partition(int[] data, int l, int r,int pivot) { l#IN)">1  
do{ fU<_bg  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); C <Pd_&  
SortUtil.swap(data,l,r); #$X _,+<HZ  
} uA4x xY  
while(l SortUtil.swap(data,l,r); muAgsH$/  
return l; %0Ibi  
} BEtFFi6ot  
@.)WS\Cv#E  
} FQBE1h@k0u  
',Y`\X  
改进后的快速排序: nc3u sq  
8 qlQC.VA[  
package org.rut.util.algorithm.support; y!8m7a  
E(F?o.b  
import org.rut.util.algorithm.SortUtil; |@5G\N-  
`*WzHDv5p  
/** ^P|Zze zwU  
* @author treeroot } _=h]|6t  
* @since 2006-2-2 NY?pvb  
* @version 1.0  oP~%7Jt  
*/ \NZ@>on  
public class ImprovedQuickSort implements SortUtil.Sort { BdB9M8fM  
6<fcG  
private static int MAX_STACK_SIZE=4096; =%SH2kb  
private static int THRESHOLD=10; +,]_TxL|C  
/* (non-Javadoc) 0YZ66VN!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mWF\h>]|.  
*/ {8 #  
public void sort(int[] data) { |G)P I`BH  
int[] stack=new int[MAX_STACK_SIZE]; ;b}cn!U]  
7jw5'`;)"  
int top=-1; !i_~<6Wa7  
int pivot;  {b|V;/  
int pivotIndex,l,r; l?A~^4(5a/  
[]doLt;J  
stack[++top]=0; s.^+y7$  
stack[++top]=data.length-1; &o]fBdn  
cJ\ 1ndBH  
while(top>0){ vRb7=fXf  
int j=stack[top--]; T_[5 ZYy  
int i=stack[top--]; [Lcy &+  
JmC2buO  
pivotIndex=(i+j)/2; dDA,Ps  
pivot=data[pivotIndex]; fu iTy72  
YpgO]\/w  
SortUtil.swap(data,pivotIndex,j); E~c>j<'-"<  
WMS~Bk+!  
file://partition 8=)9ZjfD  
l=i-1; _\<TjGtG  
r=j; ;6$W-W _  
do{ uSJLIb  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); =gC% =  
SortUtil.swap(data,l,r); CF6qEG6  
} :Wihb#TO)  
while(l SortUtil.swap(data,l,r); _yp<#q]  
SortUtil.swap(data,l,j); $9h^tP'CV  
Pv|sPIIB7  
if((l-i)>THRESHOLD){ ymn@1BA8J  
stack[++top]=i; P6")OWd  
stack[++top]=l-1; liBFx6\"S  
} b/_u\R ]-'  
if((j-l)>THRESHOLD){ 7)RRCsn  
stack[++top]=l+1; Z+=WICI/2  
stack[++top]=j; {11 3B)  
}  ;{Yr|  
/.(~=6o5  
} !$/P8T``M  
file://new InsertSort().sort(data); 7pN&fAtj/  
insertSort(data); n\< uT1n  
} h1y3gl[;TD  
/** {mY=LaS<  
* @param data LVy`U07CV  
*/ =3nA5'UZ  
private void insertSort(int[] data) { vR (nd  
int temp; j )wrF@W  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3lbGG42:  
} !C(PfsrR/  
} b\t?5z-Z  
} _$/Bt?h  
Nxt`5kSx=  
} ]x66/O\0u  
4b+_|kYb  
归并排序: VR'zm\< D  
>%5GMx>m  
package org.rut.util.algorithm.support; lk[u  
s )Xz}QPK.  
import org.rut.util.algorithm.SortUtil; ']d(m?  
vsPIvW!V  
/** S_ra8HY8  
* @author treeroot !?sB=qo  
* @since 2006-2-2 >`|Wg@_  
* @version 1.0 <?:h(IZe[  
*/ 2V~uPZ  
public class MergeSort implements SortUtil.Sort{ m {&lU@uL  
vs>Pd |p;  
/* (non-Javadoc) ] K+8f-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3v&Shb?xb;  
*/ oFhBq0@  
public void sort(int[] data) {  N!Xn)J  
int[] temp=new int[data.length]; "([lkn  
mergeSort(data,temp,0,data.length-1); 3m~,6mQ  
} L3\( <[  
I+`>e*:@W  
private void mergeSort(int[] data,int[] temp,int l,int r){ P F);KQ  
int mid=(l+r)/2; t. HwX9  
if(l==r) return ; HdyE`FY\  
mergeSort(data,temp,l,mid);  C~^T=IP  
mergeSort(data,temp,mid+1,r); 2Ima15^+F  
for(int i=l;i<=r;i++){ nGsFt.  
temp=data; JE#H&]  
} ^F- 2tc  
int i1=l; '@zMZc!  
int i2=mid+1; <tm=  
for(int cur=l;cur<=r;cur++){ +jS<n13T  
if(i1==mid+1) '+GY6Ecg  
data[cur]=temp[i2++]; O_ vH w^  
else if(i2>r) WqS$C;]%  
data[cur]=temp[i1++]; rCb$^(w{7  
else if(temp[i1] data[cur]=temp[i1++]; (!?%"e  
else 3HNm`b8G4m  
data[cur]=temp[i2++]; 4sfq,shRq  
} Pb1.X9*8c  
} EztuVe  
k2.\1}\  
} *^XMf  
e.Jaq^Gw|  
改进后的归并排序: 1/syzHjbY  
wa!z:}]  
package org.rut.util.algorithm.support; 9Z"WV5o  
Ft}nG&D  
import org.rut.util.algorithm.SortUtil; ,zdK%V}  
@:@5BCs<  
/** CYsLyk  
* @author treeroot %s;5  
* @since 2006-2-2 s2F[v:|Wq  
* @version 1.0 /XNC^!z6Js  
*/ -S&d5(R  
public class ImprovedMergeSort implements SortUtil.Sort { Zqv  
yTNHM_P  
private static final int THRESHOLD = 10; IsVR4t]  
N7GZ'-t^Er  
/* Hd TB[(  
* (non-Javadoc) b8[ ayy  
* sxdDI?W4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ma/<#l^}  
*/ r=xec@R]*  
public void sort(int[] data) { ys:F  
int[] temp=new int[data.length]; )`2ncb   
mergeSort(data,temp,0,data.length-1); - ^Y\'y2  
} :G=ol2Q  
JdUI:(  
private void mergeSort(int[] data, int[] temp, int l, int r) { [.$/o}  
int i, j, k; p9!jM\(  
int mid = (l + r) / 2; ')iyD5/4  
if (l == r) ?;Da%VS3  
return; @RCZ![XYWg  
if ((mid - l) >= THRESHOLD) 1\AcceJ|(w  
mergeSort(data, temp, l, mid); _`Y%Y6O1/  
else 1c*:" k  
insertSort(data, l, mid - l + 1); twt's,dO  
if ((r - mid) > THRESHOLD) H`yUSB IP  
mergeSort(data, temp, mid + 1, r); T hVq5  
else u Tdz$Nh  
insertSort(data, mid + 1, r - mid); |O'gT8  
+:/.\3v71  
for (i = l; i <= mid; i++) { P%d3fFzK  
temp = data; WDr=+=Zj  
} {cjp8W8hS  
for (j = 1; j <= r - mid; j++) { ?B`c <H"  
temp[r - j + 1] = data[j + mid]; .3wx}!:*|  
} Ci[Ja#p7$h  
int a = temp[l]; )EcfEym.>  
int b = temp[r]; -I z,vd  
for (i = l, j = r, k = l; k <= r; k++) { TxKNDu  
if (a < b) { *ozXilO  
data[k] = temp[i++]; }h|HT  
a = temp; .eCUvX`$  
} else { 9niffq)h  
data[k] = temp[j--]; tiR i_  
b = temp[j]; J/rF4=j%xy  
} &KV$x3  
} B-|C%~fe  
} DD6K[\  
_UbyhBl  
/** V<U9Pj^?^  
* @param data q AsTiT6r  
* @param l n<eK\ w  
* @param i 6I|9@~!y[  
*/ cet|k!   
private void insertSort(int[] data, int start, int len) { d_ &~^*>  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Gsy90  
} $dKo}  
} gEmsPk,  
} 4KW_#d`t  
} >keY x<1  
']H*f2y  
堆排序: +JB*1dz>8  
Wi*HLP!lNC  
package org.rut.util.algorithm.support; !nQoz^_`P  
bkm: #K  
import org.rut.util.algorithm.SortUtil; 51;Bc[)%  
D}2$n?~+  
/** <AHdz/N  
* @author treeroot v5FfxDvw  
* @since 2006-2-2 mAe)Hy %  
* @version 1.0 1R]h>'  
*/ q1A0-W#4  
public class HeapSort implements SortUtil.Sort{ "rrE_  
iE]^ 6i  
/* (non-Javadoc) @y|JIBBRc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  \Awqr:A&  
*/ "msPH<D  
public void sort(int[] data) { w-Q=oEt  
MaxHeap h=new MaxHeap(); R78P](1\>  
h.init(data); ! OOOc  
for(int i=0;i h.remove(); /~g.j1g  
System.arraycopy(h.queue,1,data,0,data.length); d:h X3  
} +('=Ryo T  
J|8 u  
private static class MaxHeap{ g{hbq[>X]  
"&\]1A}Z-x  
void init(int[] data){ xoQqku"vn  
this.queue=new int[data.length+1]; = d!YM6G  
for(int i=0;i queue[++size]=data; C`aUitL}  
fixUp(size); OjK+`D_C  
} Tq%##  
} ~-A"M_n ?  
=05jjR1  
private int size=0; Qqp=  
:x!'Eer n  
private int[] queue; )r XUJ29.  
<fDbz1Q;l  
public int get() { 3\|PwA9fN8  
return queue[1]; f/Q/[2t  
} u TmT'u:}  
\obM}caT  
public void remove() { 4@@gC&:Y  
SortUtil.swap(queue,1,size--); FCChB7c`  
fixDown(1); P_E xh]P  
} F&OcI.OTXF  
file://fixdown 6h&i<->  
private void fixDown(int k) { ~tB9kLFG  
int j; 9n3.Ar  
while ((j = k << 1) <= size) { djDE0-QxcR  
if (j < size %26amp;%26amp; queue[j] j++; g7K<"Z {M  
if (queue[k]>queue[j]) file://不用交换 Jx8DVjy  
break; Z}>+!Z  
SortUtil.swap(queue,j,k); ?1H>k<Jp  
k = j; VWMr\]g  
}  s)9 sb J  
} T>v`UN Bl]  
private void fixUp(int k) { }vW3<|z  
while (k > 1) { (y2P."  
int j = k >> 1; ::Pf\Lb>  
if (queue[j]>queue[k]) sP%J`L@h  
break; Rm@F9D[,  
SortUtil.swap(queue,j,k); @SAJ*h fb0  
k = j; FNXVd/{M3  
} pF:C   
} (9+N_dLx~P  
J 77*Ue ^  
} Bh6lK}9  
v3]~*\!5  
} buxyZV@1  
3\5I4#S  
SortUtil: }ct*<zj[~u  
XKbTj R  
package org.rut.util.algorithm; S@C"tHD  
<##aD3)  
import org.rut.util.algorithm.support.BubbleSort; P~@I`r567  
import org.rut.util.algorithm.support.HeapSort; 'WoB\y569  
import org.rut.util.algorithm.support.ImprovedMergeSort; P1"g62R  
import org.rut.util.algorithm.support.ImprovedQuickSort; 9~}8?kPNw=  
import org.rut.util.algorithm.support.InsertSort; /O$)m[  
import org.rut.util.algorithm.support.MergeSort; 6`)Ss5jzk  
import org.rut.util.algorithm.support.QuickSort; u6P U(f  
import org.rut.util.algorithm.support.SelectionSort; #s-li b  
import org.rut.util.algorithm.support.ShellSort; ''CowI  
QtfLJ5vi  
/** PML84*K -  
* @author treeroot -V}ZbXJD  
* @since 2006-2-2 &fifOF#[ e  
* @version 1.0 6X$iTJ[\x  
*/ E>qehs,g  
public class SortUtil { * 9}~?#b  
public final static int INSERT = 1; ~;nW+S$o  
public final static int BUBBLE = 2; H=5#cPI#(^  
public final static int SELECTION = 3; A|P `\_  
public final static int SHELL = 4; s _`y"' ^  
public final static int QUICK = 5; q^b_'We_9  
public final static int IMPROVED_QUICK = 6; T q5F'@e  
public final static int MERGE = 7; A*3R@G*h  
public final static int IMPROVED_MERGE = 8; "C [uz&  
public final static int HEAP = 9; >Y&o2zJy  
x:IY6  l  
public static void sort(int[] data) { D{s4Bo-  
sort(data, IMPROVED_QUICK); XBHv V05mv  
} SlUt&+)  
private static String[] name={ ^ px)W,O  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" DZ0\pp?S  
}; Hxd ^oE  
, MU9p*  
private static Sort[] impl=new Sort[]{ .t9zF-jk  
new InsertSort(), &8 4Izs/[  
new BubbleSort(), gc{5/U9H*  
new SelectionSort(), >.#tNFAs  
new ShellSort(), q"pnFK9/L  
new QuickSort(), JZrUl^8E  
new ImprovedQuickSort(), 5V/CYcO  
new MergeSort(), &0S/]E`_M  
new ImprovedMergeSort(), RlTVx :  
new HeapSort() Q Ph6 p3bg  
}; d@t3C8  
$Uxg$pqO  
public static String toString(int algorithm){ T89VSB~  
return name[algorithm-1]; -2Azpeh  
} MOW {g\{\  
{:9P4<%H  
public static void sort(int[] data, int algorithm) { XG}pp`{o  
impl[algorithm-1].sort(data); q! U'DDEP  
} kXbdR  
-d6*M*{|  
public static interface Sort { r#[YBaCZJ  
public void sort(int[] data); 15FGlO<<  
} E={W^k!Vz:  
:WBl0`kW]4  
public static void swap(int[] data, int i, int j) { /1q] D8  
int temp = data; #FV(a~  
data = data[j]; tY=n("=2  
data[j] = temp; SbW6O_   
} L&nGjC+Lr  
} VCvqiHn  
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