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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。 ya5HAs  
插入排序: V~ MsGj  
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package org.rut.util.algorithm.support; k3e6y  
6V ncr}  
import org.rut.util.algorithm.SortUtil; G<k.d"<  
/** EVBOubV  
* @author treeroot 0%%y9;o  
* @since 2006-2-2 JiO8 EIM  
* @version 1.0 <;'{Tj-"  
*/ wq,&0P-v  
public class InsertSort implements SortUtil.Sort{ O!hp=`B,jf  
sZxTsUW  
/* (non-Javadoc) \IYv9ScAx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vgkj4EE  
*/ N6p0`  
public void sort(int[] data) { )V+/@4  
int temp; \ykA7Y%  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6d6Dk>(V  
} Q4*{+$A  
} &/2+'wCp5  
} "L`BuAB  
DfU= i'R  
} !fd>wvJ,:  
GA` bWl  
冒泡排序: r..f$FF)\  
=qoOr~  
package org.rut.util.algorithm.support; zHg=K /  
9z{g3m70@  
import org.rut.util.algorithm.SortUtil; tS5J{j>T  
ZR%$f-  
/** /ueOc<[8"  
* @author treeroot (UhJ Pco"  
* @since 2006-2-2 %.wR@9?  
* @version 1.0 Q9h=1G\K  
*/ O"kb*//  
public class BubbleSort implements SortUtil.Sort{ :is2 &-|x  
|uz\XK  
/* (non-Javadoc) ` ~^My~f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w-$iKtb.  
*/ (x@J@ GP*  
public void sort(int[] data) { ,UC|[-J  
int temp; _ G t;=  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 6R8>w,  
if(data[j] SortUtil.swap(data,j,j-1); :;hX$Qz  
} !>ZBb\EyK  
} f x4#R(N  
} ]q4LN o  
} ]bmf}&  
kka{u[ruA  
} $;} @2U   
0-aaLC~Z>  
选择排序: PX0N7L  
ahZ@4v  
package org.rut.util.algorithm.support; lKU{jWA  
`#85r{c$:  
import org.rut.util.algorithm.SortUtil; WlY\R>x#  
n9 FA` e  
/** jk_yrbLc  
* @author treeroot \ K}KnJ  
* @since 2006-2-2 -|s% 5p|  
* @version 1.0 H^`J(J+  
*/ ])bgUH  
public class SelectionSort implements SortUtil.Sort { hVT>HER  
$FIJI^Kd7  
/* \I/"W#\SJo  
* (non-Javadoc) =jpRv<X|,  
* PY4a3dp U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {iq^CHAVK  
*/ c&%3k+j  
public void sort(int[] data) { xaB#GdD  
int temp; tn _\E/Q  
for (int i = 0; i < data.length; i++) { `s\[X-j]  
int lowIndex = i; }?Pa(0=U  
for (int j = data.length - 1; j > i; j--) { |0>rojMq  
if (data[j] < data[lowIndex]) {  P s|[  
lowIndex = j; #K$0%0=M  
} }weE^9GiJ  
} `mYp?N jR_  
SortUtil.swap(data,i,lowIndex); LkK[,Qj  
} 4T"L#o1  
} r8N)]Hs ZH  
D'{ o3Q,%K  
} nygeR|:\  
*%_M?^  
Shell排序: Xkx&'/QG,U  
pNuU{:9 B0  
package org.rut.util.algorithm.support; P,F5Hf  
F.(e}EMyNh  
import org.rut.util.algorithm.SortUtil; qz Hsqlof  
J8@+)hn  
/**  ]SL+ZT  
* @author treeroot PR(KDwsT&l  
* @since 2006-2-2 Uvi@HB HJ  
* @version 1.0 *Sbc 8Y  
*/ -`Zk`s|!  
public class ShellSort implements SortUtil.Sort{ =%>E8)Jb  
3BLH d<  
/* (non-Javadoc) t4~?m{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2v4&'C  
*/ B VH)!]m0  
public void sort(int[] data) { qX6zk0I a  
for(int i=data.length/2;i>2;i/=2){ "]'W^Fg  
for(int j=0;j insertSort(data,j,i); x 0vW9*&  
} i!JSEQ_8  
} $Op:-aW&  
insertSort(data,0,1); 8Jp?@qt=$  
} prIJjy-F  
Oq3t-omXS  
/** [!} uj`e  
* @param data B%))HLo'  
* @param j yTe25l{QaF  
* @param i fHI@' '0  
*/ =M4wP3V/  
private void insertSort(int[] data, int start, int inc) { [5M!'  
int temp; VzcW9'"#  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); +:c}LCI9<  
} yd45y}uS;F  
} +, rm  
} v] Xy^7?  
ogdAJw6 9  
} 3z#fFP@E  
GIR12%-EO  
快速排序: 1.~^QH\p?3  
f_hG2Sk  
package org.rut.util.algorithm.support; d)$ seZB  
lfw BUb  
import org.rut.util.algorithm.SortUtil; v"J|Ebx  
cj[%.M5iBA  
/** cyL|.2,  
* @author treeroot oK"#*n  
* @since 2006-2-2 A v/y  
* @version 1.0 #\z"k<{*  
*/ [E}pU8.t6  
public class QuickSort implements SortUtil.Sort{ Nk F2'Z{$+  
1'k,P;s  
/* (non-Javadoc) =)Goip  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) : :/vDUDc  
*/ dGR #l)  
public void sort(int[] data) { IY(;:#l  
quickSort(data,0,data.length-1); (51;cj>J  
} IUh)g1u41O  
private void quickSort(int[] data,int i,int j){ RT9%E/m  
int pivotIndex=(i+j)/2; j2n 4; m  
file://swap 3}.OSt'=  
SortUtil.swap(data,pivotIndex,j); !#WJ(zSq  
X%B2xQM 5  
int k=partition(data,i-1,j,data[j]); @XKVdtG  
SortUtil.swap(data,k,j); 3);W gh6  
if((k-i)>1) quickSort(data,i,k-1); Ftu d6  
if((j-k)>1) quickSort(data,k+1,j); 'sI @e s  
f_QZ ql  
} HNfd[#gV  
/** GMob&0l8_  
* @param data )f%Q7  
* @param i l~*d0E-$  
* @param j Y3'dV)  
* @return Vt4,?"  
*/ 2-"`%rE  
private int partition(int[] data, int l, int r,int pivot) { MPsm)jqX  
do{ 9v}vCg  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); fEyc3K'5V  
SortUtil.swap(data,l,r); GsE =5A8  
} $[(FCS  
while(l SortUtil.swap(data,l,r); elP#s5l4  
return l; %Vsg4DRy  
} H<`7){iG  
M;@/697G  
} o1<Z; 2#  
Xkp`1UTH  
改进后的快速排序: ]#$r TWMl'  
0Jm)2@  
package org.rut.util.algorithm.support; k@2@%02o9C  
]5eZLXM  
import org.rut.util.algorithm.SortUtil; yf e4}0}  
[>kzQYT[  
/** Yb>A?@S  
* @author treeroot FOX0  
* @since 2006-2-2 gAy"W$F  
* @version 1.0 ')E4N+h/  
*/ 88atj+N]  
public class ImprovedQuickSort implements SortUtil.Sort { Otm7j>w  
"I[u D)$  
private static int MAX_STACK_SIZE=4096; {_J1m&/  
private static int THRESHOLD=10; !f8]gTzN  
/* (non-Javadoc) 4({Wipd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TJ(vq]|&  
*/ G\S_e7$ /  
public void sort(int[] data) { 95  X6V  
int[] stack=new int[MAX_STACK_SIZE]; brt` oR  
Cqw`K P  
int top=-1; J`A )WsKkb  
int pivot; YoRD9M~iG~  
int pivotIndex,l,r; G/}nwj\  
K6oQx)|  
stack[++top]=0; '\B!1B>T  
stack[++top]=data.length-1; +}!FP3KgT  
|f"1I4K g  
while(top>0){ lO^YAOY  
int j=stack[top--]; n0'"/zyc  
int i=stack[top--]; 0]t7(P"F6  
%0Ke4c  
pivotIndex=(i+j)/2; T9Pu V  
pivot=data[pivotIndex]; T Z@S?r>^  
Tn\59 (  
SortUtil.swap(data,pivotIndex,j); @>hXh +!2h  
N< 7  
file://partition @?<1~/sfL  
l=i-1; 7.1FRxS  
r=j; ~C;gEE-  
do{ EcmyY,w  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 1cPjgBxv#  
SortUtil.swap(data,l,r); iJ~e8l0CA  
} =doOt 7Rj  
while(l SortUtil.swap(data,l,r); x?-kt.M  
SortUtil.swap(data,l,j); .&c!k1kH  
@RVj~J.A  
if((l-i)>THRESHOLD){ Pt %EyFG  
stack[++top]=i; CKRnkTTiV  
stack[++top]=l-1; [%BWCd8Q~P  
} P}bwEj  
if((j-l)>THRESHOLD){ FKu^{'Y6E0  
stack[++top]=l+1; /hbdQm  
stack[++top]=j; ST^{?Q  
} o^& nkR  
cP(is!  
} tY $4k26  
file://new InsertSort().sort(data); `}&}2k  
insertSort(data); LDq(WPI1#  
} &$E.rgtg  
/** N'RUtFqj   
* @param data \dc*!Es  
*/ Ewczq1%l:  
private void insertSort(int[] data) { Y^J/jA0\B  
int temp; q#!c6lG  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +^@6{1  
} _'DZoOH|VE  
} \jThbCb  
} } {m.\O  
g|V0[Hnq6  
} wDS(zG   
( G#W6  
归并排序: a$P$Ngi?S  
q|7$@H^*  
package org.rut.util.algorithm.support; ]k.'~ Syz  
~l>2NY  
import org.rut.util.algorithm.SortUtil; ,*'aH z  
SI@Yct]<g  
/** 9q f=P3  
* @author treeroot 9Kd:7@U  
* @since 2006-2-2 *%`jcF  
* @version 1.0 Hs6}~d  
*/ +c_8~C  
public class MergeSort implements SortUtil.Sort{ [}bPkD  
/:@X<  
/* (non-Javadoc) Luu.p<   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E'4 dI:  
*/ :\8&Th}Se  
public void sort(int[] data) { 66shr  
int[] temp=new int[data.length]; e.ksN  
mergeSort(data,temp,0,data.length-1); 8ORr  
} dsUY[X-<6  
04cNi~@m  
private void mergeSort(int[] data,int[] temp,int l,int r){ LS4|$X4H`!  
int mid=(l+r)/2; _q dLA  
if(l==r) return ; I &I q  
mergeSort(data,temp,l,mid); fE/|U|5L[  
mergeSort(data,temp,mid+1,r); JPfE`NZ  
for(int i=l;i<=r;i++){ TZ+2S93c  
temp=data; h9L/.>CX  
} >n^[-SWJCT  
int i1=l; >On"BP# U  
int i2=mid+1; &24z`ZS[w6  
for(int cur=l;cur<=r;cur++){ h9 &V   
if(i1==mid+1) hz_F^gF  
data[cur]=temp[i2++]; v"a.%" oN8  
else if(i2>r) O:3DIT1#>  
data[cur]=temp[i1++]; n32.W?9  
else if(temp[i1] data[cur]=temp[i1++]; esVZ2_eL  
else v\?J$Hdd  
data[cur]=temp[i2++]; Ffp<|2T2_  
} 5.e. BT  
} Pb-Ft =  
v<U +&D{  
} M~&X?/8  
>E3 lY/[  
改进后的归并排序: <<[hZ$.  
p~w|St 7jg  
package org.rut.util.algorithm.support; *=ymK*  
&BDdJwE  
import org.rut.util.algorithm.SortUtil; 2r|!:^'?W  
qEbzF#a-:  
/** k_<8SG+`  
* @author treeroot _z3YB  
* @since 2006-2-2 `Gp!Y  
* @version 1.0 edy6WzxBcm  
*/ oPA [vY  
public class ImprovedMergeSort implements SortUtil.Sort { Ho:X.Z9A^  
!1\j D  
private static final int THRESHOLD = 10; DfQD!}=  
az2CFd^M  
/* H;O PA8\n  
* (non-Javadoc) f:-dw6a=s  
* U\Hd?&`9gz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SZ m)`r\A  
*/ >av.pJ(>  
public void sort(int[] data) { ';z5]O~  
int[] temp=new int[data.length]; K2GcU_*t  
mergeSort(data,temp,0,data.length-1); H^no&$2`1  
} GxIw4m9  
[d_sd  
private void mergeSort(int[] data, int[] temp, int l, int r) { zsx12b^w  
int i, j, k; hj.Du+1  
int mid = (l + r) / 2; sR1 &2hB  
if (l == r) Z|kMoB  
return; >O{/%(9  
if ((mid - l) >= THRESHOLD) uF=xo`=|  
mergeSort(data, temp, l, mid); $ (gR^L  
else @GiR~bKZ  
insertSort(data, l, mid - l + 1); D< 4!7*9%  
if ((r - mid) > THRESHOLD) nBVknyMFNF  
mergeSort(data, temp, mid + 1, r); !7K-Kqn  
else xf.2Ig  
insertSort(data, mid + 1, r - mid); FiQx5}MMhu  
5E+k}S]M$  
for (i = l; i <= mid; i++) { KQ x<{-G6  
temp = data; +i[w& P  
} Xkv+"F=-  
for (j = 1; j <= r - mid; j++) { Q b|.;_  
temp[r - j + 1] = data[j + mid]; ,T|%vqbmw  
} &Tf R].  
int a = temp[l]; S}hg*mWn{$  
int b = temp[r]; nd] AvVS  
for (i = l, j = r, k = l; k <= r; k++) { ] cv|A^  
if (a < b) { 0+\~^  
data[k] = temp[i++]; ?Ze3t5Ll  
a = temp; |UO1vA@  
} else { 2.K"+%  
data[k] = temp[j--]; {mp;^/O`er  
b = temp[j]; jnoFNIW   
} q$Ol"K@  
} [i'\d}  
} DvuL1Me Ko  
zq5_&AeW  
/** )^&)f!f  
* @param data B`4[@$  
* @param l %-4e8d74/  
* @param i sKX%<n$  
*/ S"=o U}'|  
private void insertSort(int[] data, int start, int len) { e XU;UO^  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ^w<:UE2a!  
} `f:5w^A  
} a`w)awb  
} Kup-O u,  
} >Q~"/-bN)  
!HXdUAKu  
堆排序: +M\*C#  
] 05Q4  
package org.rut.util.algorithm.support; BX),U  
tc{23Rf%  
import org.rut.util.algorithm.SortUtil; b'N"?W^YQ  
_OF 8D  
/** 2#A u6BvX  
* @author treeroot ~X;(m<f2  
* @since 2006-2-2 #oYX0wvl  
* @version 1.0 9tS& $-  
*/ >NwrJSx  
public class HeapSort implements SortUtil.Sort{ u%O^hcfb  
fxLhVJ"b  
/* (non-Javadoc) `,(1'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LwUvM  
*/ (D8'qx-M  
public void sort(int[] data) { v] *W*;  
MaxHeap h=new MaxHeap(); )_EobE\  
h.init(data); Ze$:-7Czl  
for(int i=0;i h.remove(); 7l Aa6"Y68  
System.arraycopy(h.queue,1,data,0,data.length); ji( S ?^  
} D0QXvrf  
t:M({|m Y  
private static class MaxHeap{ sI`i  
U hCd,  
void init(int[] data){ a~ REFy  
this.queue=new int[data.length+1]; =]E1T8|  
for(int i=0;i queue[++size]=data; cQPH le2  
fixUp(size); T6H"ER$  
} iA ZtV'VQ)  
} &TbnZnv  
!wrl.A/P  
private int size=0; Dz)bP{iq"  
bi^LpyEn  
private int[] queue; i6m;2 UAa  
U(./LrM05  
public int get() { xDr *|d  
return queue[1]; 1'_OM h*;  
} t*Q12Q  
'd?8OV  
public void remove() { PfrW,R~r  
SortUtil.swap(queue,1,size--); JsPuxu_  
fixDown(1); :OI!YR%"  
} v2@M,xbxF:  
file://fixdown Fr%KO)s2  
private void fixDown(int k) { udc9$uO  
int j; `%ymg8^  
while ((j = k << 1) <= size) { 0/KNXz  
if (j < size %26amp;%26amp; queue[j] j++; 1shvHmrV  
if (queue[k]>queue[j]) file://不用交换 !#iP)"O  
break; w#b~R^U  
SortUtil.swap(queue,j,k); TU. h  
k = j; # |UrHK;  
} m d C. FO-  
} G>_ZUHd I  
private void fixUp(int k) { &P {%C5?{  
while (k > 1) { */8\Z46z  
int j = k >> 1; @pko zE-  
if (queue[j]>queue[k]) FyS K&  
break; 98O z  
SortUtil.swap(queue,j,k); U3U eTa_  
k = j; Bv=Z*"Fv  
} rfPJBD{Ve  
} *pWswcV/  
<g%xo"  
} ;%82Z4  
d#z67Nl6  
} "{0kg'fU  
ng 6G<hi  
SortUtil: TOuFFR  
=C:0 ='a  
package org.rut.util.algorithm; R\+$^G}#6  
>$"bwr}'4B  
import org.rut.util.algorithm.support.BubbleSort; /cjf 1Dc  
import org.rut.util.algorithm.support.HeapSort; H+0 *  
import org.rut.util.algorithm.support.ImprovedMergeSort; Aqm0|GlJ  
import org.rut.util.algorithm.support.ImprovedQuickSort; L"b5P2{c  
import org.rut.util.algorithm.support.InsertSort; ?4~lA L1  
import org.rut.util.algorithm.support.MergeSort; Kc{wv/6}T  
import org.rut.util.algorithm.support.QuickSort; T@S+5(  
import org.rut.util.algorithm.support.SelectionSort; ]jYl:41yI  
import org.rut.util.algorithm.support.ShellSort; dvj`%?=  
,,iQG' *  
/** "M*\,IH  
* @author treeroot '/p5tw8  
* @since 2006-2-2 l`u*,"$  
* @version 1.0 E|fPI u  
*/ G37_ `C  
public class SortUtil { -J6}7>4^8}  
public final static int INSERT = 1; BW*zj=N%  
public final static int BUBBLE = 2; }gn0bCJy  
public final static int SELECTION = 3; <=`@`rm{  
public final static int SHELL = 4; ,#m\W8j  
public final static int QUICK = 5; L`p[Dq.  
public final static int IMPROVED_QUICK = 6; 5s|gKM  
public final static int MERGE = 7; Cv=0&S.  
public final static int IMPROVED_MERGE = 8; lubS{3<  
public final static int HEAP = 9; @rdC/=Y[  
fAm2ls7c  
public static void sort(int[] data) { l-npz)EM  
sort(data, IMPROVED_QUICK); lwB!ti  
} s-DtkO  
private static String[] name={ w])Sz*J  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" &S{F"z  
}; oc?VAF  
&KB{,:)?  
private static Sort[] impl=new Sort[]{ U9q*zP_jV  
new InsertSort(), c*W$wr  
new BubbleSort(), .KD07  
new SelectionSort(), YJ0[ BcZ  
new ShellSort(), [+1 i$d  
new QuickSort(), G@(7d1){  
new ImprovedQuickSort(), R's xa*VB  
new MergeSort(), $200?[  
new ImprovedMergeSort(), Ylf4q/-  
new HeapSort() S&0x:VW  
}; =osj}(  
^m7PXY  
public static String toString(int algorithm){ ,s)H%  
return name[algorithm-1]; ~E\CAZ  
} ^q6~xC,/  
x{- caOH  
public static void sort(int[] data, int algorithm) { +1y#=iM{  
impl[algorithm-1].sort(data); {xr]xcM'b  
} Il642#Gh  
(/Mc$V  
public static interface Sort { 6 qq7:  
public void sort(int[] data); Em 7q@  
} wVVe L$28  
jL8zH  
public static void swap(int[] data, int i, int j) { /IC' R"V a  
int temp = data; Zry>s0  
data = data[j]; 7MfT~v  
data[j] = temp; tX_eN  
} q}!4b'z^  
} c'6H@m#=  
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