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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。 p&\DG  
插入排序: A"0Yn(awWu  
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package org.rut.util.algorithm.support; qiq=v)  
O|+$ 9#,  
import org.rut.util.algorithm.SortUtil; VbNN1'a-  
/** e(FT4KD~  
* @author treeroot >p`i6_P0P/  
* @since 2006-2-2 \=$G94%  
* @version 1.0 aiZZz1C   
*/ 7V5kYYR^F  
public class InsertSort implements SortUtil.Sort{ ,Y16m{<eC  
\tA@A  
/* (non-Javadoc)  ~fs} J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #ApmJLeCO  
*/ cEn|Q  
public void sort(int[] data) { #Zi6N  
int temp; VCT1GsnE  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +U>Y.YP  
} }2^qM^,0  
} W e*uZ?+  
} $@w ,9J\  
^E)8Sb9t  
} Galh _;=  
m|;gl|dTB  
冒泡排序: e.Q'l/g  
;iQw2XhT  
package org.rut.util.algorithm.support; y-S23B(  
\?|^w.  
import org.rut.util.algorithm.SortUtil; -S&d5(R  
Zqv  
/** yTNHM_P  
* @author treeroot IsVR4t]  
* @since 2006-2-2 YS<KyTb"  
* @version 1.0 }9N-2]  
*/ - ~*kAh  
public class BubbleSort implements SortUtil.Sort{ !Q,Dzv"7  
cY+n 6k5  
/* (non-Javadoc) NCYOY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b ZZ _yc  
*/ mnw(x#%P  
public void sort(int[] data) { $7-S\sDr  
int temp; - /cf3  
for(int i=0;i for(int j=data.length-1;j>i;j--){ fp`m>} -  
if(data[j] SortUtil.swap(data,j,j-1); h\5~&}Hp  
} b?2 \j}  
} hpq\  
} Bsk` e  
} dp2FC   
xCyD0^KY  
} F>?~4y,b7  
"*TP@X?@f  
选择排序: ,Ww.W'#P  
bIzBY+P  
package org.rut.util.algorithm.support; &'/bnN +R  
y'<5P~W!a  
import org.rut.util.algorithm.SortUtil; &V%faa1  
sp_19u  
/** 2_Zn?#G8dl  
* @author treeroot z~i>GN_  
* @since 2006-2-2  .4Mc4'  
* @version 1.0 0LTsWCUQ6e  
*/ a=sd&](_  
public class SelectionSort implements SortUtil.Sort { "|N0oEG&  
#WE lL2&  
/* i3) 7Qa[  
* (non-Javadoc) |Qpd<L  
* g6$\i m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _s:5)  
*/ ) bd`U  
public void sort(int[] data) { e?\hz\^  
int temp; mZ0_^  
for (int i = 0; i < data.length; i++) { 8M]QDgd.  
int lowIndex = i; }0>\%C  
for (int j = data.length - 1; j > i; j--) { vq\L9$WJ  
if (data[j] < data[lowIndex]) { @Hr1.f  
lowIndex = j; qZlL6  
} L"uidd0(g  
} e5w0}/yW/  
SortUtil.swap(data,i,lowIndex); [Kb)Q{=)  
} B"`86qc  
} d6zq,x!cI  
%][zn$aa|  
} 9U@>&3[v  
<W^>:!?w  
Shell排序: ^e80S^  
j#l1KO^y  
package org.rut.util.algorithm.support; fF5\\_,  
"y ;0}9]n1  
import org.rut.util.algorithm.SortUtil; jS|jPk|I.  
XAB/S8e  
/** 7{VN27Fa_  
* @author treeroot _Om5w p=:  
* @since 2006-2-2 R-2Aby ts2  
* @version 1.0 d7Z$/ $  
*/ I]Z"?T  
public class ShellSort implements SortUtil.Sort{ 2Y;iqR  
a!&m\+?  
/* (non-Javadoc) |T*t3}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dd@ D s  
*/ vtzbF1?O  
public void sort(int[] data) { 3=0b  
for(int i=data.length/2;i>2;i/=2){ UY)Iu|~0b  
for(int j=0;j insertSort(data,j,i); :Z6l)R+V  
} }!WuJz"  
} (%fSJCBl[P  
insertSort(data,0,1); `0=j,54cx  
} @[5]?8\o  
/1hcw|cfC  
/** w-Q=oEt  
* @param data T+:GYab/  
* @param j Lp+?5DjLT  
* @param i /~g.j1g  
*/ d:h X3  
private void insertSort(int[] data, int start, int inc) { +('=Ryo T  
int temp; J|8 u  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); JK'tdvs~  
} [h.i,%Ua"P  
} Zj)A%WTD,  
} kcP&''  
.|y{1?f_  
} /f>I;z1  
;v ~xL!uQ  
快速排序: Fl\kt.G  
cdg &)  
package org.rut.util.algorithm.support; b\xse2#  
b^<7@tY  
import org.rut.util.algorithm.SortUtil; J& D0,cuk  
j^Ln\N]^  
/** iUS?xKN$~-  
* @author treeroot F[X;A\  
* @since 2006-2-2 ALKzR433/  
* @version 1.0 c}2"X,  
*/ )2F%^<gZ#  
public class QuickSort implements SortUtil.Sort{ hM8FN  
HZ89x|H k_  
/* (non-Javadoc) ZRUI';5x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Pj7MR/AH  
*/ D)eRk0iC  
public void sort(int[] data) { # tU@\H5kN  
quickSort(data,0,data.length-1); De49!{\a  
} FuP~_ E~  
private void quickSort(int[] data,int i,int j){ = Fwzm^}6  
int pivotIndex=(i+j)/2; $-n_$jLY  
file://swap _!o0bYD  
SortUtil.swap(data,pivotIndex,j); e?e oy|  
tSiQr I  
int k=partition(data,i-1,j,data[j]); ?1H>k<Jp  
SortUtil.swap(data,k,j); jG,^~ 5x  
if((k-i)>1) quickSort(data,i,k-1); K` <`l  
if((j-k)>1) quickSort(data,k+1,j); -B:O0;f  
p8z"Jn2P  
} ho6,&Bp8  
/** "I3&a1*  
* @param data _D1)_?`a@-  
* @param i oXGP6#  
* @param j ,"T[#A~  
* @return ^C{?LH/2  
*/ 9}11>X  
private int partition(int[] data, int l, int r,int pivot) { ]iaQD _'\  
do{ (9+N_dLx~P  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); r6e!";w:U  
SortUtil.swap(data,l,r); ZRC7j?ui8`  
} v3]~*\!5  
while(l SortUtil.swap(data,l,r); buxyZV@1  
return l; 3\5I4#S  
} ?M04 cvm  
-raZ6?Zjc  
} nY?X@avo>  
n:%A4*  
改进后的快速排序: m8&XW2S  
AKAxfnaR  
package org.rut.util.algorithm.support; SXmh@a"*\  
K(}<L-cv  
import org.rut.util.algorithm.SortUtil; .u;'eVH)a}  
^I!gteU;  
/** iBqIV  
* @author treeroot / gE9 W  
* @since 2006-2-2 `e+eL*rZ~  
* @version 1.0 9`DY6qfly  
*/ jq+:&8!8(e  
public class ImprovedQuickSort implements SortUtil.Sort { Z DnAzAR  
l4q7,%G  
private static int MAX_STACK_SIZE=4096; ~#iAW@  
private static int THRESHOLD=10; uF]+i^+  
/* (non-Javadoc) T`)uR*$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~VJP:Y{[  
*/ d6"B_,*b  
public void sort(int[] data) { E>qehs,g  
int[] stack=new int[MAX_STACK_SIZE]; B zr}+J  
58/\  
int top=-1; Y\{lQMCy  
int pivot; 7 6S>xnN  
int pivotIndex,l,r; rXnG"A  
GC~N$!*  
stack[++top]=0; ,CnUQx0  
stack[++top]=data.length-1; /Pa<I^-#  
\J^xpR_0u  
while(top>0){ V;]U]   
int j=stack[top--]; 20mZ{_%  
int i=stack[top--]; BC1P3Sk 6X  
Z/I`XPmk  
pivotIndex=(i+j)/2; +,bgOq\aG  
pivot=data[pivotIndex]; 5>M@ F0  
< nyk:E  
SortUtil.swap(data,pivotIndex,j); H3q L&xL  
:,=Z)e  
file://partition & /lmg!6  
l=i-1; /M~rmIks  
r=j; 8R.`*  
do{ D{s4Bo-  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); NKw}VW'|  
SortUtil.swap(data,l,r); OGU#%5"<  
} |n.ydyu`  
while(l SortUtil.swap(data,l,r); | b)N;t  
SortUtil.swap(data,l,j); O; <YLS^|6  
Z!qF0UDj  
if((l-i)>THRESHOLD){ P+;@?ofB  
stack[++top]=i; gPWl#5P:  
stack[++top]=l-1; Vq#_/23=$y  
} +PkN~m`  
if((j-l)>THRESHOLD){ \( xQ'AQ-  
stack[++top]=l+1; v7- d+P=  
stack[++top]=j; Cl3hpqv1I  
} c)=UX_S!  
k3t2{=&'&x  
} [0hZg  
file://new InsertSort().sort(data); gc{5/U9H*  
insertSort(data); DX#F]8bWl  
} `z3"zso  
/** BcD%`vGJ  
* @param data e\>g@xE%  
*/ 9:6d,^X  
private void insertSort(int[] data) { *gXm&/2*  
int temp; 7S9Q{  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); bLyG3~P;0  
} -<B{?D  
} NbW5a3=  
} p=J9N-EM  
,<?M/'4}G  
} a fhZM$  
9<I;9.1S?^  
归并排序: 6u v'{  
y2Z1B2E%f  
package org.rut.util.algorithm.support; vR"<:r47?  
hTbot^/  
import org.rut.util.algorithm.SortUtil; q CB9z  
mPo].z  
/** -2Azpeh  
* @author treeroot gedk  
* @since 2006-2-2 %epK-q9[  
* @version 1.0 9CTvG zkw  
*/ $U/_8^6B0  
public class MergeSort implements SortUtil.Sort{ 4lfJc9J  
},LW@Z}  
/* (non-Javadoc) K1>(Fs$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k|T0Bly3P  
*/ kXbdR  
public void sort(int[] data) { abM4G  
int[] temp=new int[data.length]; Y_<(~eN`  
mergeSort(data,temp,0,data.length-1); )z?Kq0  
} \M`fkR,,'  
@3b|jJyf  
private void mergeSort(int[] data,int[] temp,int l,int r){ 1)m&6:!b  
int mid=(l+r)/2; C\dlQQ  
if(l==r) return ; OT5'cl  
mergeSort(data,temp,l,mid); BV HO_  
mergeSort(data,temp,mid+1,r);  g8_IZ(%:  
for(int i=l;i<=r;i++){ Z;JZ<vEt92  
temp=data; 9#@CmiIhy  
} =F}e>D  
int i1=l; *oX~z>aE  
int i2=mid+1; >, }m=X8  
for(int cur=l;cur<=r;cur++){ K06/ D!RD4  
if(i1==mid+1) {m%X\s;ni  
data[cur]=temp[i2++]; XP-4=0zd  
else if(i2>r) XOy#? X/`  
data[cur]=temp[i1++]; 4hv'OEl  
else if(temp[i1] data[cur]=temp[i1++]; d.&~n`Rv!p  
else M^^u{);q  
data[cur]=temp[i2++]; %7?v='s=  
} OAQ'/{~7  
} {L8(5  
vv,(ta@t2  
} }`9}Q O  
r8~U@$BBK  
改进后的归并排序: qlg~W/  
{9 Op{bZ  
package org.rut.util.algorithm.support; _9Ig`?<>I  
:Y[r^=>  
import org.rut.util.algorithm.SortUtil; ^OQ#Nz  
HiG&`:P>q  
/** R%Yws2Le2  
* @author treeroot :q4 Mnr  
* @since 2006-2-2 "zO+!h'o  
* @version 1.0 i4"xvL K4  
*/ Bv |Z)G%RR  
public class ImprovedMergeSort implements SortUtil.Sort { -j9R%+YW<  
-3r&O:  
private static final int THRESHOLD = 10; !lF|90=  
C6eon4Ut  
/* .0q %A1H  
* (non-Javadoc) y*6r&989  
* 5\tYs=>b<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L$x/T3@  
*/ `#X{.  
public void sort(int[] data) { ";e0-t6:  
int[] temp=new int[data.length]; n6nwda  
mergeSort(data,temp,0,data.length-1); F77[fp  
} XI,F^K  
"FaG5X(  
private void mergeSort(int[] data, int[] temp, int l, int r) { o=_4v ^  
int i, j, k; Nu{RF  
int mid = (l + r) / 2; |[ |X  
if (l == r) 0p$?-81BJ  
return; q#PGcCtu  
if ((mid - l) >= THRESHOLD) MT#9x>  
mergeSort(data, temp, l, mid); MnsnW{VGX  
else ' n~N*DH  
insertSort(data, l, mid - l + 1); =k`(!r2"#  
if ((r - mid) > THRESHOLD) 6SsZK)X  
mergeSort(data, temp, mid + 1, r); t Q_}o[  
else W.n@  
insertSort(data, mid + 1, r - mid); R< xxwjt  
a(8]y.`Tv  
for (i = l; i <= mid; i++) { G$4lH>A&  
temp = data; s$:]$&5  
} 4aB`wA^x  
for (j = 1; j <= r - mid; j++) { Z[`J'}?|  
temp[r - j + 1] = data[j + mid]; L i=l/  
} !HDk]   
int a = temp[l]; qTyU1RU$9^  
int b = temp[r]; ^m8\fCA*  
for (i = l, j = r, k = l; k <= r; k++) { qr=U= oK  
if (a < b) { VkhK2  
data[k] = temp[i++]; Z/uRz]Hi  
a = temp; M7,|+W/RK  
} else { +U%lWE%  
data[k] = temp[j--]; =GM!M@~,Ab  
b = temp[j]; HA"dw2 |  
} xYt{=  
} <WBGPzVZE  
} YQX>)'  
D?5W1m]E,s  
/** o(~JZi k  
* @param data P!YT{}  
* @param l G';oM;~/|  
* @param i ieS5*@^k  
*/ q}BQu@'H  
private void insertSort(int[] data, int start, int len) { ~w[zX4@  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ",8h>eEWK  
} ;{Z2i%  
} A7_*zR @  
} ,%nmCetD@  
} n7<<}wcV  
"TjR]jnV(  
堆排序: /'VCJjzZ  
~?b(2gn  
package org.rut.util.algorithm.support; YBS]JCO  
x5`q)!<&  
import org.rut.util.algorithm.SortUtil; ]P<&CEk  
/e{Oqhf[n  
/** ( v ~/glf  
* @author treeroot Z^GriL  
* @since 2006-2-2 A7b7IM[  
* @version 1.0 aeBth{  
*/ 4VU5}"<  
public class HeapSort implements SortUtil.Sort{ ~Nc] `95  
"hlIGJ?_=  
/* (non-Javadoc) oHi&Z$#!n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bR&hI9`%F  
*/ c@nl;u)n  
public void sort(int[] data) { X?7$JV-:  
MaxHeap h=new MaxHeap(); ir,Zc\C  
h.init(data); =C3l:pGMB;  
for(int i=0;i h.remove(); x-Mp6  
System.arraycopy(h.queue,1,data,0,data.length); 6gR=e+  
} & vLX  
Ca1)>1 Vz  
private static class MaxHeap{ ":-)mfgGU  
A<.Q&4jb  
void init(int[] data){ #sqDZ]\B  
this.queue=new int[data.length+1]; M;43F*   
for(int i=0;i queue[++size]=data; 9I.v?Tap  
fixUp(size); .cZ&~ N  
} ;_Rx|~!!  
} 7L-%5:1%  
x6)   
private int size=0; RXWjFv~/  
e&0B4wVAQ  
private int[] queue; ` chf8  
y6PAXvv'{  
public int get() { o$-8V:)6d  
return queue[1]; v\MH;DW^Z  
} )E[5lD61  
mML^kgy\N  
public void remove() { U<6k!Y9ny  
SortUtil.swap(queue,1,size--); dl":?D4H  
fixDown(1); 'g=yJ  
} ,-b{oS~u  
file://fixdown vy"Lsr3  
private void fixDown(int k) { ;!~;05^iD  
int j; M"9 zK[cz  
while ((j = k << 1) <= size) { G8;S`-D1a,  
if (j < size %26amp;%26amp; queue[j] j++; rf`Br\g8  
if (queue[k]>queue[j]) file://不用交换 nL:vRJr-$  
break; &% *S  
SortUtil.swap(queue,j,k); MW4dPoa  
k = j; PZ ogN  
} 93!a  
} >6kWmXK[  
private void fixUp(int k) { 3x=F  
while (k > 1) { _E30t( _.  
int j = k >> 1; 3tm z2JIb  
if (queue[j]>queue[k]) x# YOz7.  
break; Czci6 Lz  
SortUtil.swap(queue,j,k); Sm Ei _u]'  
k = j; H_AV3 ;  
} l =_@<p  
} ~.@fk}'R  
<7jb4n<  
} yav)mO~QU6  
c^6`"\X^g  
} T*{zL  
R/Y/#X^b  
SortUtil: tAC,'im:*  
 CMg83  
package org.rut.util.algorithm; rvmI 8  
KOmP-q=6  
import org.rut.util.algorithm.support.BubbleSort; ,X$Avdc2  
import org.rut.util.algorithm.support.HeapSort; iP!Y4F  
import org.rut.util.algorithm.support.ImprovedMergeSort; G/8xS=  
import org.rut.util.algorithm.support.ImprovedQuickSort; ?X9 =4Z~w  
import org.rut.util.algorithm.support.InsertSort; 3=<iGX"z  
import org.rut.util.algorithm.support.MergeSort; #P4dx'vm  
import org.rut.util.algorithm.support.QuickSort; 7YN)T?  
import org.rut.util.algorithm.support.SelectionSort; a[$.B2U  
import org.rut.util.algorithm.support.ShellSort; g~y9j88?  
G4{qWa/  
/** 2?r8>#_*  
* @author treeroot r2](~&i2  
* @since 2006-2-2 a:| 4q  
* @version 1.0 bK].qN  
*/ : te xl  
public class SortUtil { 6m.Ku13;  
public final static int INSERT = 1; Zn/9BO5  
public final static int BUBBLE = 2; z1FbW&V  
public final static int SELECTION = 3; F889JSZ%  
public final static int SHELL = 4; /-hF<oNQ  
public final static int QUICK = 5; hZ'oCRM  
public final static int IMPROVED_QUICK = 6; QlS5B.h,  
public final static int MERGE = 7; x ?V/3zW  
public final static int IMPROVED_MERGE = 8; 6_y|4!,:W  
public final static int HEAP = 9; 3'"M31iA  
op|mRJBq;  
public static void sort(int[] data) { ~4>Xi* B  
sort(data, IMPROVED_QUICK); {4QOUqAu  
} <{U{pCT%  
private static String[] name={ Fm;)7.% >  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" @\D D|o67  
}; Ad,r(0a LZ  
hKTg~y^  
private static Sort[] impl=new Sort[]{ >4ct[fW+  
new InsertSort(), Ds G *  
new BubbleSort(), `Of wl%G  
new SelectionSort(), eTF8B<?  
new ShellSort(), rq1kj 8%2  
new QuickSort(), KyyG8;G%  
new ImprovedQuickSort(), ,Mhe:^3  
new MergeSort(), !1RV[b.8  
new ImprovedMergeSort(), p\{+l;`  
new HeapSort() X]yERaJ,i  
}; lz)"zV  
g&Z7h4!\  
public static String toString(int algorithm){ zkp Apj].  
return name[algorithm-1]; V{h@nhq  
} +r0eTP=zf  
4{DeF@@  
public static void sort(int[] data, int algorithm) { )R^Cqo'  
impl[algorithm-1].sort(data); K7hf m%`N  
} }K>H S\e  
gr 5]5u  
public static interface Sort { rEhf_[Dv  
public void sort(int[] data); j&/.[?K  
} 99!{[gOv  
3] qlz?5  
public static void swap(int[] data, int i, int j) { '!-?  
int temp = data; fl"y@;;#h  
data = data[j]; S(J\<)b  
data[j] = temp; mei_aN7zW  
} RGO:p]t|  
} A&P1M6Of  
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