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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。 shw?_#?1dy  
插入排序: 9Qyc!s`  
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package org.rut.util.algorithm.support; *)[fGxz \  
bU gg2iFS  
import org.rut.util.algorithm.SortUtil; +}jzge"  
/** / `cy4<  
* @author treeroot QMMpB{FZ`o  
* @since 2006-2-2 qkfof{z  
* @version 1.0 3[#^$_96b  
*/ :[a*I6/^  
public class InsertSort implements SortUtil.Sort{ F- kjv\  
\d:Q%S  
/* (non-Javadoc) .#y#u={{l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6$"IeBRO  
*/ 1F.._5_"]  
public void sort(int[] data) { s:{[Y7\?  
int temp; xWLZlUHEu  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);  W2` 3 p  
} 'e:4  
} ]MCH]/  
} U<Oc&S{]*  
9@1n:X  
} J_F\cM   
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冒泡排序: {GtX:v#  
j*>]HNo&  
package org.rut.util.algorithm.support; +.djC3^:  
J5a8U&A  
import org.rut.util.algorithm.SortUtil; Q]5_s{kiz  
t|>P9lX@  
/** d8Vqmrc~  
* @author treeroot {X?Aj >l  
* @since 2006-2-2 @ 2hGkJ-  
* @version 1.0 B}qG-}(V  
*/ {]Mwuqn  
public class BubbleSort implements SortUtil.Sort{ uP4yJ/]  
a@g <cl7a,  
/* (non-Javadoc) nZiwR4kM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T6y~iNd<  
*/ kRggVRM  
public void sort(int[] data) { HnPy";{  
int temp; KyIUz9$  
for(int i=0;i for(int j=data.length-1;j>i;j--){ |HAbZd7PG  
if(data[j] SortUtil.swap(data,j,j-1); U ]pE{ ^\w  
} rFcz 0  
} ~xzr8 P  
} dr#%~I  
} T=NLBJ  
g)f& mQ)  
} *X3wf`C?  
:V$\y up  
选择排序: GX23c i  
="G2I\  
package org.rut.util.algorithm.support; 7j|CWurvq  
i&(1 <S>P  
import org.rut.util.algorithm.SortUtil; L0VZ>!*o  
jNbVp{%/S}  
/** h5P ]`r  
* @author treeroot _G)A$6weU  
* @since 2006-2-2 ;Q3[} ]su  
* @version 1.0 62;xK-U  
*/ L=54uCv Q  
public class SelectionSort implements SortUtil.Sort { m|JA }&A  
@|h9jx|  
/* h@JX?LzZS  
* (non-Javadoc) N_Ezp68Fp  
* DhxS@/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `JV(ae0  
*/ FzOWM7+\  
public void sort(int[] data) { :~vg'v~C  
int temp; {KDN|o+%  
for (int i = 0; i < data.length; i++) { Sg%s\p]N_#  
int lowIndex = i; ~jJ.E_i  
for (int j = data.length - 1; j > i; j--) { iWWtL  
if (data[j] < data[lowIndex]) { 6RIbsy  
lowIndex = j; L~/L<Ms  
} `]]5!U2  
} ElTB{C>u  
SortUtil.swap(data,i,lowIndex); 7Wv.-LD6  
} 0 NSw^dO\  
} *Mg@j;+5s  
C@;e<  
} qu#xc0?  
.~ uKr^%  
Shell排序: (z;lNl(*C  
R68:=E4  
package org.rut.util.algorithm.support; .[eC w  
,^n&Q'p3  
import org.rut.util.algorithm.SortUtil; Zs|Ga,T  
]Vj($O:  
/** @=z.^I30  
* @author treeroot " ;Cf@}i>  
* @since 2006-2-2 Fa`%MR1  
* @version 1.0 |) cJ  
*/  7L:Eg  
public class ShellSort implements SortUtil.Sort{ dHAT($QG  
`uLr^G=;  
/* (non-Javadoc) Qm7];,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Uufig)6  
*/ zrSYLG  
public void sort(int[] data) { L[:A Ue  
for(int i=data.length/2;i>2;i/=2){ [&P @0F n  
for(int j=0;j insertSort(data,j,i); PI$i_3N  
} yX*$PNL5w  
} g :B4zlKG  
insertSort(data,0,1); }UcdkKq  
} mc`Z;D/mt  
jLn#%Ia}  
/** |<3x`l-`  
* @param data sWse (_2  
* @param j  mVS^HQ:  
* @param i Hr=|xw8.  
*/ ,%A|:T]  
private void insertSort(int[] data, int start, int inc) { #mJRL[V5^  
int temp; |_g7k2oLY  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); T9J&^I  
} E;`^`T40  
} ]5@n`;&#.  
} OpazWcMoo  
a0k;way  
} ]iW:YNvXA  
:B=Gb8?  
快速排序: ^B%ki  
.* `]x  
package org.rut.util.algorithm.support; @J>JZ7m]\  
<7)sS<I  
import org.rut.util.algorithm.SortUtil; H}_R`S  
[%yj' )R/  
/** l-nH  
* @author treeroot 9%SC#V'  
* @since 2006-2-2 /Q)I5sL@E  
* @version 1.0 `<~=6H  
*/ ~}{_/8'5  
public class QuickSort implements SortUtil.Sort{ vP#*if[V5  
B R  
/* (non-Javadoc) !#%>,X#+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }8YY8|]LI  
*/ / ~".GZ&29  
public void sort(int[] data) { H)S!%(x4  
quickSort(data,0,data.length-1); B#IUSHC  
} hP'4PLK  
private void quickSort(int[] data,int i,int j){ o(DG 3qk  
int pivotIndex=(i+j)/2; DC/Czkv9  
file://swap {U>N*&_`  
SortUtil.swap(data,pivotIndex,j); fD(r/~Vu  
x%k@&d;z  
int k=partition(data,i-1,j,data[j]); (x\VGo  
SortUtil.swap(data,k,j); I0H]s/*C%9  
if((k-i)>1) quickSort(data,i,k-1); vm;%713#1  
if((j-k)>1) quickSort(data,k+1,j); n8)&1 q?V  
yEjiMtQll]  
} \p.yR.  
/** >l%8d'=Jl  
* @param data F_-xp1|  
* @param i 8oI|Z=  
* @param j K/Pw;{}  
* @return \6MM7x(U3  
*/ N.q*jY= X|  
private int partition(int[] data, int l, int r,int pivot) { k18v{)i~  
do{ JF~9efWe>  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); p/nATvh$  
SortUtil.swap(data,l,r); o o'7  
} <[ 2?~s  
while(l SortUtil.swap(data,l,r); ZI1]B944ni  
return l; e-v|  
} #Ff8_xhP2  
}wp/,\_ >  
} xk/-TXB 0  
;a>u7rw  
改进后的快速排序: &b^~0Z  
l"+8>Mm  
package org.rut.util.algorithm.support; _()1 "5{  
g-UCvY I  
import org.rut.util.algorithm.SortUtil; ?ZGsh7<k  
U$OI]Dd9  
/**  7 FY2a  
* @author treeroot R ai 0 4  
* @since 2006-2-2 +C~d;p  
* @version 1.0 (p12=EB<  
*/ j%y{d(Q4  
public class ImprovedQuickSort implements SortUtil.Sort { g"|>^90  
|kvH`&s  
private static int MAX_STACK_SIZE=4096; L~;(M6Jp  
private static int THRESHOLD=10; U/kQwrM  
/* (non-Javadoc) zdU 46|!u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "9c=kqkX  
*/ b+:J?MR;}  
public void sort(int[] data) { &wY$G! P  
int[] stack=new int[MAX_STACK_SIZE]; RjvW*'2G  
flC%<V%'-  
int top=-1; = &pLlG  
int pivot; Xj{fM\,"9  
int pivotIndex,l,r; R{bG`C8.d  
\5!7zPc  
stack[++top]=0; NZ i3U  
stack[++top]=data.length-1; ToPjB vD  
"OwVCym?  
while(top>0){ #z%D d{E  
int j=stack[top--]; :8oJG8WH  
int i=stack[top--]; !dGu0wE  
NNbdP;=:u  
pivotIndex=(i+j)/2;  6(-s@{  
pivot=data[pivotIndex]; gELG/6l  
`?N0?;  
SortUtil.swap(data,pivotIndex,j); ^Z;zA@[wt  
\ B84  
file://partition ZfqN4  
l=i-1; 6MY<6t0a  
r=j; 'n-y*f  
do{ UQ0<sI=  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 3BCD0 %8  
SortUtil.swap(data,l,r); #6ePwd  
} _ pz}  
while(l SortUtil.swap(data,l,r); LOi}\O8  
SortUtil.swap(data,l,j); wxc#)W  
< ]1,L%  
if((l-i)>THRESHOLD){ K6-M.I  
stack[++top]=i; J=$\-  
stack[++top]=l-1; TE+>|}]R  
} kUS]g r~i  
if((j-l)>THRESHOLD){ `q<W %'Tb$  
stack[++top]=l+1; LYRpd  
stack[++top]=j; HBOyiIm Q  
} #L+:MA7H  
7LrmI~P  
} b\`S[  
file://new InsertSort().sort(data); rq8 d}wj  
insertSort(data); lcm [l  
} ^O+(eA7E  
/** [F-GaaM  
* @param data _7;:*'>a4  
*/ 8vR_WHsL  
private void insertSort(int[] data) { ; iia?f1  
int temp; y{hy7w'd  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); RhHm[aN  
} U3V5Jo r#  
} 1F`jptVQ\G  
} Px=@Tw N,  
HVHv,:bPo  
} qJdlZW<  
+K'Hr: (  
归并排序: ZzupK^5Z  
i}DS+~8v  
package org.rut.util.algorithm.support; [A,^ F0:h  
@pYEzizP7  
import org.rut.util.algorithm.SortUtil; iI IXv  
LO{Axf%  
/** PZusYeV8b  
* @author treeroot l^Rb%?4Z  
* @since 2006-2-2 kzRJzJquP  
* @version 1.0 pzz* >Y  
*/ 87 s*lS  
public class MergeSort implements SortUtil.Sort{ !>`Fg>uy  
JaRsm'SIk~  
/* (non-Javadoc) _&#{cCo:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R03 Te gwA  
*/ G7nhUg  
public void sort(int[] data) { vNv!fkl  
int[] temp=new int[data.length]; !&rd#ZBn  
mergeSort(data,temp,0,data.length-1); ~pQN#C)CO>  
} MWh Y&I+  
'V]&X.=zC  
private void mergeSort(int[] data,int[] temp,int l,int r){ "GK9Y  
int mid=(l+r)/2; ?F AI@4  
if(l==r) return ; !o /=,ZIx  
mergeSort(data,temp,l,mid); Eu`|8# [ W  
mergeSort(data,temp,mid+1,r); 22CET9iCe  
for(int i=l;i<=r;i++){ kJ_8|  
temp=data; [Vo5$w  
} v .jxG {~.  
int i1=l; "ntP928  
int i2=mid+1; K@O^\  
for(int cur=l;cur<=r;cur++){ 7pyzPc#_  
if(i1==mid+1) !=YKfzE  
data[cur]=temp[i2++]; AzOs/q8O  
else if(i2>r) \x}\)m_7M<  
data[cur]=temp[i1++];  m[B#k$  
else if(temp[i1] data[cur]=temp[i1++]; sF{aG6u   
else X@\W* nq  
data[cur]=temp[i2++]; E&P2E3P  
} C_Ewu*T7  
} =n5'~1?X?  
4KM-$h,4O  
} PW5]+ |#  
H;1@]|sH#  
改进后的归并排序: P0n1I7|  
"0An'7'm  
package org.rut.util.algorithm.support; VLez<Id9(  
-r={P _E6  
import org.rut.util.algorithm.SortUtil; X/,) KTo7  
}4A] x`3  
/** >[fu&r1  
* @author treeroot ef7{D P  
* @since 2006-2-2 @KQ.tF*  
* @version 1.0 gJ \6cZD  
*/ Tnp P'  
public class ImprovedMergeSort implements SortUtil.Sort { G](4!G&  
gc.Lh~  
private static final int THRESHOLD = 10; #J"xByQKK  
N*o{BboK;  
/* UZyg_G6  
* (non-Javadoc) q!ZM Wg  
* |58HPW9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @Vre)OrN#  
*/ 0<uek  
public void sort(int[] data) { UTD_rQ  
int[] temp=new int[data.length]; hIJtu;}zU  
mergeSort(data,temp,0,data.length-1); {%R^8  
} *q=T1JY  
{o}U"b<+Ra  
private void mergeSort(int[] data, int[] temp, int l, int r) { )L:z r#  
int i, j, k; [IL*}M!  
int mid = (l + r) / 2; 0[MYQl`  
if (l == r) @NLcO}  
return; gM&IV{k3  
if ((mid - l) >= THRESHOLD) ]M7FIDg  
mergeSort(data, temp, l, mid); $Nu{c;7"  
else F8f}PV]b  
insertSort(data, l, mid - l + 1); .[Sis<A]%  
if ((r - mid) > THRESHOLD) 1M]=Nv  
mergeSort(data, temp, mid + 1, r); ubcB <=xb  
else g+ c*VmY  
insertSort(data, mid + 1, r - mid); ^65I,Z"  
4S<M9A}  
for (i = l; i <= mid; i++) { v675C#l(  
temp = data; ?QOU9"@+B  
} g#J` 7n  
for (j = 1; j <= r - mid; j++) { PI9,*rOy  
temp[r - j + 1] = data[j + mid]; UMoj9/-  
} }L\;W:0  
int a = temp[l]; TN(Vzs%  
int b = temp[r]; $UR:j8C{p$  
for (i = l, j = r, k = l; k <= r; k++) { ^_WR) F'K  
if (a < b) {  LR97FG  
data[k] = temp[i++]; EeW ,-I  
a = temp; -S'KxC  
} else { !5`MiH  
data[k] = temp[j--]; S,m(  
b = temp[j]; +A| Bc~2!  
} Q|'f3\  
} J:Cr.K`  
} 4t, 2H"M  
aLa<z Essz  
/** D:z'`v0j  
* @param data uvId],dQ5  
* @param l A)f-r  
* @param i 8q^}AT<C  
*/ dli(ckr  
private void insertSort(int[] data, int start, int len) { (` *BZ_  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 1'~Xn 4 f  
} 7v5]% %E/  
} 3l{V:x!9@  
} jI ol`WX  
} ?qgQ)#6  
a(gXvgrf[  
堆排序: 3s6obw$ki  
TSB2]uH  
package org.rut.util.algorithm.support; |Y7SP]/`gB  
(95|DCL  
import org.rut.util.algorithm.SortUtil; # T=iS(i  
Tagf7tw4  
/** 'C]w3Rh'  
* @author treeroot 7(Fas(j3  
* @since 2006-2-2 586P~C[ic  
* @version 1.0 >8f~2dH2%  
*/ Ku(YTXtK  
public class HeapSort implements SortUtil.Sort{ h^Wb<O`S  
zI`I Q  
/* (non-Javadoc) [:8\F#KW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 19E(Hsz  
*/ ^O07GYF  
public void sort(int[] data) { 2bt>t[0ad  
MaxHeap h=new MaxHeap(); 4^F[Gp?  
h.init(data); j4~(6Imm  
for(int i=0;i h.remove(); q$:1Xkl  
System.arraycopy(h.queue,1,data,0,data.length); RkYdK$|K  
} Y%KowgP\  
%7#<K\])  
private static class MaxHeap{ ;UQGi}?CD  
%_(vSpk  
void init(int[] data){ FM {f{2j  
this.queue=new int[data.length+1]; N!+=5!  
for(int i=0;i queue[++size]=data; )/raTD  
fixUp(size); c]6b|mHT  
} 6S`_L  
} \<7Bx[/D4  
/ Hr|u  
private int size=0; B2;P%B  
uo"<}>iJ  
private int[] queue; 1j?P$%p  
Y~"tL(WfJl  
public int get() { gIB3DuUo  
return queue[1]; Od!)MQ*,  
} $qNF /rF  
IiPX`V>RC  
public void remove() { [\8rh^LFi  
SortUtil.swap(queue,1,size--); I9X \@ lTf  
fixDown(1); @6;OF5VsQ  
} `<7\Zl  
file://fixdown $$9H1)Ny  
private void fixDown(int k) { S\GWMB!oF  
int j; 8E%LhA.  
while ((j = k << 1) <= size) { #(^<qr   
if (j < size %26amp;%26amp; queue[j] j++; |AYii-g  
if (queue[k]>queue[j]) file://不用交换 4 &bmt  
break; mskG2mA  
SortUtil.swap(queue,j,k); 4.O)/0sU  
k = j; XZE(& (s  
} G5}_NS/  
} ;hT3N UCA  
private void fixUp(int k) { )D8op;Fn  
while (k > 1) { UmR)L!QT8  
int j = k >> 1; 8eXe b|?J  
if (queue[j]>queue[k]) XGa8tI[:X  
break; q5f QTV  
SortUtil.swap(queue,j,k); ]#o;`5'  
k = j; hek+zloB+  
} Rhc:szDU  
} 6n9/`D!  
kV'zA F v  
} *zdD4 I=  
4C;;V m4~  
} 2S8;=x}/  
<cTX;&0=  
SortUtil: 9D3W_eIc  
wd`p>  
package org.rut.util.algorithm; lR?y tIY  
iv*RE9?^  
import org.rut.util.algorithm.support.BubbleSort; EyK!'9~a  
import org.rut.util.algorithm.support.HeapSort; d"|_NG`vr  
import org.rut.util.algorithm.support.ImprovedMergeSort; PQaTS*0SXJ  
import org.rut.util.algorithm.support.ImprovedQuickSort; dz^HN`AlzC  
import org.rut.util.algorithm.support.InsertSort; }qWnn>h9xv  
import org.rut.util.algorithm.support.MergeSort; cH_qHXi[G  
import org.rut.util.algorithm.support.QuickSort; +`d92Tz  
import org.rut.util.algorithm.support.SelectionSort; |f_'(-v`E  
import org.rut.util.algorithm.support.ShellSort; c.>f,vtcn  
>Na.C(DZ  
/** K|%Am4  
* @author treeroot ^G!cv  
* @since 2006-2-2 mV}bQ^*?Z  
* @version 1.0 xp|1yud  
*/ RP~nLh3=\  
public class SortUtil { t|U5]$5  
public final static int INSERT = 1; u`v&URM  
public final static int BUBBLE = 2; By1T um+I1  
public final static int SELECTION = 3; c7CYulm  
public final static int SHELL = 4; \&F4Wl>`  
public final static int QUICK = 5; +$C9@CZM9  
public final static int IMPROVED_QUICK = 6; %R GZu\p  
public final static int MERGE = 7; pA8bFtt  
public final static int IMPROVED_MERGE = 8; CR [>5/:M  
public final static int HEAP = 9; DuC#tDP  
sc*R:"  
public static void sort(int[] data) { rWr'+v?  
sort(data, IMPROVED_QUICK); `l45T~`]$  
} -r *|N.5c  
private static String[] name={ [8'?G5/n  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" -mO#HZIq  
}; q^xG%YdPz+  
"M/c0`>C!i  
private static Sort[] impl=new Sort[]{ ';R]`vWFe  
new InsertSort(), -nGcm"'6F  
new BubbleSort(), =-^A;AO(  
new SelectionSort(), > TYDkEs0  
new ShellSort(), Noj*K6  
new QuickSort(), nmpc<&<<  
new ImprovedQuickSort(), 7rD 8  
new MergeSort(), #M!u';bZ  
new ImprovedMergeSort(), %oiF} >  
new HeapSort() gdIk%m4  
}; /Xi21W/  
3P!OP{`  
public static String toString(int algorithm){ _i>_Sn1"  
return name[algorithm-1]; `,4yGgD!4  
} q{h,}[U=  
!SuflGx,q  
public static void sort(int[] data, int algorithm) { h; q&B9  
impl[algorithm-1].sort(data); +pYgh8w@  
} w10~IP  
|47t+[b   
public static interface Sort { ^p(aZj3k  
public void sort(int[] data); A.*e8a/6X  
} Rxdj}xy  
g=mKTk   
public static void swap(int[] data, int i, int j) { tQ@7cjq8bA  
int temp = data; e (]]  
data = data[j];  3?D, Wu  
data[j] = temp; z#gebr~_\  
} {N]WVp*R  
} :?~)P!/xl5  
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