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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。 2^Im~p~ByE  
插入排序: >7cj. %  
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package org.rut.util.algorithm.support; tl*v(ZW  
\h s7>5O^K  
import org.rut.util.algorithm.SortUtil; -}sMOy`  
/** XY9%aT*  
* @author treeroot .mqMzV  
* @since 2006-2-2 NX(+%EBcA  
* @version 1.0 d_&pxy? >  
*/ o+ {i26%  
public class InsertSort implements SortUtil.Sort{ %`$:/3P$U  
zd- *UF i  
/* (non-Javadoc) >d"\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sGNHA( ;  
*/ vRW;{,d  
public void sort(int[] data) { ?6ssSjR}  
int temp; (6mw@gzr  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); VSCKWYy  
} mAW(j@5sp  
} aQY.96yo  
} 62.Cq!~  
RL]$"  
} Xg1TX_3Ml  
dxZn| Y  
冒泡排序: Kx,X{$Pe  
}2*qv4},!  
package org.rut.util.algorithm.support; ?z-nY,'^uq  
W=+AU!%  
import org.rut.util.algorithm.SortUtil; =HIKn6C<  
K%/\XnCY  
/** gN(kRhp  
* @author treeroot G)b:UJa"  
* @since 2006-2-2 l?m 3 *  
* @version 1.0 r oG<2i F  
*/ b5jD /X4  
public class BubbleSort implements SortUtil.Sort{ )g $T%  
B%tj-h(a  
/* (non-Javadoc) R8!~>$#C6)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Gf.xr%mUZr  
*/ 7.2!g}E  
public void sort(int[] data) { "7Kw]8mRR  
int temp; &"T7KXx  
for(int i=0;i for(int j=data.length-1;j>i;j--){ \SwqBw  
if(data[j] SortUtil.swap(data,j,j-1); YKayaI\*  
} o.|36#Fa  
} o>d0R w4h  
} b%@9j;  
} N.E{6_{S  
MZA%ET,l,<  
} Y:Lkh>S1Q  
=F/R*5:T  
选择排序: H>]*<2(=-  
x N>\t& c  
package org.rut.util.algorithm.support; ?;5/"/i  
Nknd8>Hy+  
import org.rut.util.algorithm.SortUtil; ;H71A[M T  
6MU;9|&  
/** 3^q9ll7Op  
* @author treeroot A>S7Ap4z>  
* @since 2006-2-2 7oUo[  
* @version 1.0 Rw[!Jq  
*/ eW3?3l`fvt  
public class SelectionSort implements SortUtil.Sort { #_3-(H5u  
F2<Q~gQ;  
/* uV}GUE%W  
* (non-Javadoc) eej#14 &  
* asp\4-?$o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g2LvojR  
*/ VTDnh*\5  
public void sort(int[] data) { XPt>klf  
int temp; (o{x*';i4  
for (int i = 0; i < data.length; i++) {  k 6@  
int lowIndex = i; )NZ&m$I|-  
for (int j = data.length - 1; j > i; j--) { 0N4ZV}s,d  
if (data[j] < data[lowIndex]) { 7hMh%d0d(_  
lowIndex = j; Tb:'M:dM"  
} SnvT !ca  
} " ? V;C  
SortUtil.swap(data,i,lowIndex); 9T`YHA'g  
} zI(uexxPqd  
} &lzCRRnvt  
tN.BI1nB  
} ,5t_}d|3C=  
U%VFr#  
Shell排序: hmb=_W  
?,hGKSC  
package org.rut.util.algorithm.support; I7'v;*  
KlBT9"6"  
import org.rut.util.algorithm.SortUtil; K@osD7-  
=R9`to|  
/** _XrlCLp: d  
* @author treeroot q %tq9%  
* @since 2006-2-2 i{Q,>Rt  
* @version 1.0 juM~X5b  
*/ ?G&J_L=@Y  
public class ShellSort implements SortUtil.Sort{ Dp^=%F{t  
~:_10g]r  
/* (non-Javadoc) t0:~BYXu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L/bvM?B^  
*/ es+ZPX>Y  
public void sort(int[] data) { L!ms{0rJ  
for(int i=data.length/2;i>2;i/=2){ fbah~[5}  
for(int j=0;j insertSort(data,j,i); '?{L gj^R  
} v Oo^H  
} P$clSJW  
insertSort(data,0,1); 4m~p(r  
} kqC7^x  
2U+Fa t@  
/** 'q8:1i9\[  
* @param data lq  Av  
* @param j Nlc3S+$`z  
* @param i NcSi%]  
*/ 1mfB6p1Z(  
private void insertSort(int[] data, int start, int inc) { 'Q*lp!2>  
int temp; C'sA0O@O  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); $Nj'_G\}  
} R-f('[u  
} 5g9K|-  
} ,|UwZ_.  
$"Ci{iE  
} jcxeXp|00  
su8()]|0x  
快速排序: [e:ccm  
poi39B/Vt  
package org.rut.util.algorithm.support; Ipow Jw^  
hrfSe$8  
import org.rut.util.algorithm.SortUtil; &&96kg3  
'0qKb*  
/** v}^uN+a5  
* @author treeroot v?DA>  
* @since 2006-2-2 "(\]-%:7  
* @version 1.0 Q 9JT6  
*/  /zir$  
public class QuickSort implements SortUtil.Sort{ np7!y U  
7#26Smv  
/* (non-Javadoc) ^7$Q"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kH62#[J)yM  
*/ 2>Kn'p  
public void sort(int[] data) { >lO]/3j1  
quickSort(data,0,data.length-1); P2U[PO  
} ?V)M!  
private void quickSort(int[] data,int i,int j){ I[LHJ4  
int pivotIndex=(i+j)/2; TP=#U^g*  
file://swap 5 ^tetDz}  
SortUtil.swap(data,pivotIndex,j); ~c>]kL(,  
0IbR>zFg.  
int k=partition(data,i-1,j,data[j]); U,~Z2L  
SortUtil.swap(data,k,j); 0'`#I  
if((k-i)>1) quickSort(data,i,k-1); nh"LdHqiDB  
if((j-k)>1) quickSort(data,k+1,j); %#lJn.o  
F @Wb<+0  
} il:RE8  
/** vH?3UW  
* @param data CX>QP&Gj  
* @param i <gY.2#6C\%  
* @param j ?NUDHUn_  
* @return Z&J.8A]L  
*/ 8d>>r69$pa  
private int partition(int[] data, int l, int r,int pivot) { Aq&H-g]s  
do{ E. Arq6  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); F8*P/<P1cK  
SortUtil.swap(data,l,r); \ 3l3,VYH  
} <\\,L@  
while(l SortUtil.swap(data,l,r); .W0;Vhw"  
return l; 'c/Z W  
} {,o =K4CD  
QPz3IK%   
} E uk[ @1  
k'1i quc#u  
改进后的快速排序: SA -r61  
qMcOSZ%8J  
package org.rut.util.algorithm.support; 3Ett9fBd  
3*<~;Z' z4  
import org.rut.util.algorithm.SortUtil; EwOi` g  
E#M4{a1  
/** u-X P `  
* @author treeroot _R|8_#yM  
* @since 2006-2-2 h%%dRi  
* @version 1.0 tt]ZGn*  
*/ 0BHSeO,  
public class ImprovedQuickSort implements SortUtil.Sort { ]}N&I_mU  
uJt*> ;Kp  
private static int MAX_STACK_SIZE=4096; ZfWF2%]<  
private static int THRESHOLD=10; X}j_k=,C  
/* (non-Javadoc) 0tah$;c e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }!5+G:JAh  
*/ ]1i1_AR'`  
public void sort(int[] data) { ':?MFkYC  
int[] stack=new int[MAX_STACK_SIZE]; =:7OS>x  
:g"U G0];  
int top=-1; $N17GqoC  
int pivot; mMtX:  
int pivotIndex,l,r; Bez 7  
G\o *j |  
stack[++top]=0; eTY" "EWU  
stack[++top]=data.length-1; %0^taA  
ch:0qgJ  
while(top>0){ v.e~m2u_F  
int j=stack[top--]; UhF+},gU  
int i=stack[top--]; =%G<S'2'  
)|i]"8I  
pivotIndex=(i+j)/2; ADVHi3b  
pivot=data[pivotIndex]; P{h$> 6c  
Uz; pNWMk  
SortUtil.swap(data,pivotIndex,j); SXm Hn.?  
`]l*H3+hg  
file://partition R"k}wRnxY  
l=i-1; DM)%=C6<  
r=j; 6 2#dSd}HG  
do{ Z3Y(g  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); $tFmp)  
SortUtil.swap(data,l,r); Zjkrne{  
} `F TA{ba  
while(l SortUtil.swap(data,l,r); !TdbD56  
SortUtil.swap(data,l,j); *mj3  T  
N13wVx  
if((l-i)>THRESHOLD){ j= Ebk;6p  
stack[++top]=i; A@k`$xevVj  
stack[++top]=l-1; aMycvYzH  
} j?cE0 hz  
if((j-l)>THRESHOLD){ |c5r&oM&m  
stack[++top]=l+1; dd@-9?6M  
stack[++top]=j; 8X2NEVH]  
} _^"0"<,  
-H(\[{3{V  
} x $ oId{;  
file://new InsertSort().sort(data); d#]XyN>  
insertSort(data); Ct,|g =(  
} lDm0O)Dh!  
/** pz@wbu=($4  
* @param data n{v[mqm^  
*/ mtg3}etA  
private void insertSort(int[] data) { >YW_}kd  
int temp; `p)$7!  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); G^=C#9c.m  
} q+/7v9  
} CHX- 4-84{  
} 9H4NvB{  
7Eett)4  
} xxC2F:Q?U  
kw Iw=8q~  
归并排序: ?3{:[*  
] M#OS$_O@  
package org.rut.util.algorithm.support; 2wki21oY  
)kiC/Y}k  
import org.rut.util.algorithm.SortUtil; [#Y7iN&  
^u[n!R\  
/** PQFr4EY?i  
* @author treeroot DU>#eR0G  
* @since 2006-2-2 h1'j1uI  
* @version 1.0 (lBwkQNQGd  
*/ ^saH^kg1"  
public class MergeSort implements SortUtil.Sort{ 7`IoQvX  
%uWq)D4r  
/* (non-Javadoc) BYBf`F)4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q-M"+HO  
*/ +:&,Ts/  
public void sort(int[] data) { W8R"X~!V  
int[] temp=new int[data.length]; _R?:?{r,  
mergeSort(data,temp,0,data.length-1); P,/=c(5\}  
} ) FnJLd  
Y^~Dr|5%  
private void mergeSort(int[] data,int[] temp,int l,int r){ +vh 4I  
int mid=(l+r)/2; }b5If7  
if(l==r) return ; vw/L|b7G  
mergeSort(data,temp,l,mid); > R5<D'cEN  
mergeSort(data,temp,mid+1,r); tEXY>=  
for(int i=l;i<=r;i++){ Ckc4U. t|  
temp=data; AvS<b3EoN  
} #nOS7Q#uW  
int i1=l; }pzUHl>  
int i2=mid+1; =5jng.  
for(int cur=l;cur<=r;cur++){ ?UGA-^E1  
if(i1==mid+1) bdUe,2Yin  
data[cur]=temp[i2++]; $ 3/G)/A  
else if(i2>r) .+ w#n<  
data[cur]=temp[i1++]; |6d0,muN  
else if(temp[i1] data[cur]=temp[i1++]; CtO`t5  
else U:n3V  
data[cur]=temp[i2++]; KPcOW#.T  
} A=S_5y  
} @ !UuK;  
]a}K%D)H  
} nA#FGfZ{Ge  
*$eMM*4  
改进后的归并排序: ~j&#DG&L  
`X06JTqf:  
package org.rut.util.algorithm.support; Ur/+nL{  
D|`I"N[<  
import org.rut.util.algorithm.SortUtil; :QV-!  
=83FCq"  
/** gISG<!+X^  
* @author treeroot ~T_4M  
* @since 2006-2-2 MvLmEmKb}\  
* @version 1.0 6pHn%yE*  
*/ ~RRp5x _  
public class ImprovedMergeSort implements SortUtil.Sort { g]hTz)8fF  
Xj^Hy"HC^~  
private static final int THRESHOLD = 10; vCB0 x:/  
Y%B:IeF}  
/* W".: 1ov#B  
* (non-Javadoc) bvK fxAih  
* uFzvb0O`O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) };z[x2l^  
*/ &u@<0 1=  
public void sort(int[] data) { o'8`>rb  
int[] temp=new int[data.length]; TNHkHR[&  
mergeSort(data,temp,0,data.length-1); iksd^\]f  
} X?'v FC  
kDz!v?Z2+B  
private void mergeSort(int[] data, int[] temp, int l, int r) { i^2yq&uT(  
int i, j, k; Gidh7x  
int mid = (l + r) / 2; !BocF<UE  
if (l == r) (")IU{>c6  
return; 9mEt**s Ur  
if ((mid - l) >= THRESHOLD) ^s_BY+#  
mergeSort(data, temp, l, mid); ;c!}'2>vM  
else ,1}c% C*,Q  
insertSort(data, l, mid - l + 1); F"k.1.  
if ((r - mid) > THRESHOLD) ?Z ]5 [  
mergeSort(data, temp, mid + 1, r); |@a.dgz,  
else /i${[1  
insertSort(data, mid + 1, r - mid); ;E"TOC  
tocZO  
for (i = l; i <= mid; i++) { y$f{P:!"{3  
temp = data; xM dbS4&!  
} 3j]P\T  
for (j = 1; j <= r - mid; j++) { n%M-L[n  
temp[r - j + 1] = data[j + mid]; Dp5hr8bT  
} bP4<q?FKcN  
int a = temp[l]; 'k?%39  
int b = temp[r]; =Qa*-*  
for (i = l, j = r, k = l; k <= r; k++) { %SHjJCS3  
if (a < b) { yt+"\d  
data[k] = temp[i++];  t dl Y  
a = temp; <d$L}uQwg  
} else { #fy#G}c  
data[k] = temp[j--]; phT|w H  
b = temp[j]; /:YJ2AARY  
} ] X9e|  
} Fjc4[ C  
} Hkcr+BQ  
w A0 $d  
/** kFJ sB,2-  
* @param data errT7&@,A  
* @param l OJkiTs{  
* @param i HH\6gs]u  
*/ b?p_mQKtZ  
private void insertSort(int[] data, int start, int len) { f^tCD'Vmi  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); IwE{Zvr  
} <0Mc\wy  
} 0nh;0Z  
} UJqDZIvC  
} vbDSNm#Yv  
+, SUJ|  
堆排序: ugZ-*e7  
HW{si]~q  
package org.rut.util.algorithm.support; D 2U")g}U  
DH#n7s'b  
import org.rut.util.algorithm.SortUtil; $qoh0$  
X"S-f; b#  
/** cZ!%#A z  
* @author treeroot % |6t\[gn  
* @since 2006-2-2 cWd\Ki  
* @version 1.0 PWwz<AI+  
*/ ]w3-No  
public class HeapSort implements SortUtil.Sort{ !zhg3B# p  
)CYm/dk  
/* (non-Javadoc) )4[Yplo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z/|oCwR  
*/ M!{;:m28X!  
public void sort(int[] data) { O3?3XB> <  
MaxHeap h=new MaxHeap(); hU:M]O0uw  
h.init(data); [@l:C\2  
for(int i=0;i h.remove(); ^[7ZBmS  
System.arraycopy(h.queue,1,data,0,data.length); ^x! N]  
} jkPye{j  
.=j]PckJO  
private static class MaxHeap{ y%y F34  
JAjXhk<=  
void init(int[] data){ !N`$`qAK  
this.queue=new int[data.length+1]; G lz0`z  
for(int i=0;i queue[++size]=data; {HJzhIgCf  
fixUp(size); (1 L9K;  
} 4`x.d  
} *r b/BZX{  
x6, #Jp  
private int size=0; /EN3>25"#  
*1}UK9X;  
private int[] queue; O#}'QZd'  
i; 8""A  
public int get() { -P+@n)?T6  
return queue[1]; CaSoR |  
} ;"*\R5 a  
b'D|p/)m0S  
public void remove() { &a'H vQV  
SortUtil.swap(queue,1,size--); 9q?\F  
fixDown(1); sHk,#EsKH  
} q8j W&_  
file://fixdown *PXlbb  
private void fixDown(int k) { )FNvtLZ  
int j; '7+e!>"  
while ((j = k << 1) <= size) { /[[_}\xI%  
if (j < size %26amp;%26amp; queue[j] j++; rmX'Ym9#  
if (queue[k]>queue[j]) file://不用交换 ]BY^.!Y  
break; H nKO  
SortUtil.swap(queue,j,k); uxGY/Zf  
k = j; =~)J:x\F  
} X+'z@xpj  
} NTnjVU }  
private void fixUp(int k) { Km5#$IiP;  
while (k > 1) { l!U_7)s/  
int j = k >> 1; Z!@<[Vo6  
if (queue[j]>queue[k]) X~aD\%kC7  
break; 20 j9~+  
SortUtil.swap(queue,j,k); o\_@4hXf  
k = j; IZ<d~ [y  
} 9t 3mU:  
} UStNUNCq  
x@-bY  
} aoLYw 9  
XZ@;Tyn0,  
} lJ+05\pE  
=}:9y6QR.  
SortUtil: Y9b|lP7!  
uQ^r1 $#  
package org.rut.util.algorithm; ^E)Kse.>  
we6kV-L.  
import org.rut.util.algorithm.support.BubbleSort; n=HId:XT  
import org.rut.util.algorithm.support.HeapSort; `Qf$]Eoft  
import org.rut.util.algorithm.support.ImprovedMergeSort; "bO\Wt#Mf  
import org.rut.util.algorithm.support.ImprovedQuickSort; sh $mOy  
import org.rut.util.algorithm.support.InsertSort; )c'5M]V  
import org.rut.util.algorithm.support.MergeSort; Ca: jN0  
import org.rut.util.algorithm.support.QuickSort; T gpf0(  
import org.rut.util.algorithm.support.SelectionSort; j,q8n`@  
import org.rut.util.algorithm.support.ShellSort; =j%B`cJ66_  
bB|UQaCl  
/** c:  /Wk  
* @author treeroot `$IuN *  
* @since 2006-2-2 `m6>r9:  
* @version 1.0 LX%K*nlj  
*/ J3oEN'8S  
public class SortUtil { ub C(%Y_k  
public final static int INSERT = 1; `yjHLg  
public final static int BUBBLE = 2; ]9xuLJ)  
public final static int SELECTION = 3; 6m#V=4e*  
public final static int SHELL = 4; RUJkfi=$  
public final static int QUICK = 5; /Iwnl   
public final static int IMPROVED_QUICK = 6; ()< E?D=  
public final static int MERGE = 7; RC_w 1:h  
public final static int IMPROVED_MERGE = 8; OYw~I.Rq  
public final static int HEAP = 9; !.\EU*)1  
C2WWS(zn  
public static void sort(int[] data) { $T\W'W R>  
sort(data, IMPROVED_QUICK); [@!.(Hp  
} D& Xh|}2A  
private static String[] name={ q[6tvPfkX  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" _ >)+ u  
}; P\;L#2n  
L5%t.7B  
private static Sort[] impl=new Sort[]{ j2V"w&>b}  
new InsertSort(), gy|L!_1Z8  
new BubbleSort(), QXXB>gOY5  
new SelectionSort(), s}MD;V&0  
new ShellSort(), 1Sk=;Bic  
new QuickSort(), l(-We.:(  
new ImprovedQuickSort(), TO&ohATp  
new MergeSort(), :]EAlaB4Q  
new ImprovedMergeSort(), ].W)eMC*c(  
new HeapSort() wVSM\  
}; =x9SvIm/tH  
{H]xA3[]  
public static String toString(int algorithm){ h28")c.pH=  
return name[algorithm-1]; gyqM&5b  
} /}G+PUk7  
k A`Z#yu  
public static void sort(int[] data, int algorithm) { /.Yf&2X\  
impl[algorithm-1].sort(data); gB4&pPN  
} iV h^;  
"m*.kB)e7  
public static interface Sort { \;al@yC=T  
public void sort(int[] data); r)ni;aP  
} cL31g_u  
XCCh*qym  
public static void swap(int[] data, int i, int j) { m3Mo2};?  
int temp = data; 8(yZX4OH>  
data = data[j]; hu?Q,[+o  
data[j] = temp; z >EOQe  
} tDWW 4H  
} +D[|Mi  
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