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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。 u3ST;  
插入排序: a5)JkC  
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package org.rut.util.algorithm.support; B>,A(X&  
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import org.rut.util.algorithm.SortUtil; lA]N04 d  
/** _CL{IY  
* @author treeroot m d_g}N(C  
* @since 2006-2-2 me:iQ.g  
* @version 1.0 \+9;!VWhl  
*/ JL``iA  
public class InsertSort implements SortUtil.Sort{ c@9##DPn  
Ok,HD7  
/* (non-Javadoc) n>S2}y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #n#HzbT  
*/ >x*)GPDa  
public void sort(int[] data) { FllX za)  
int temp; `6}Yqh))  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5#2jq<D  
} #Skj#)I"  
} p_r4^p\  
} [83>T ,  
~U3S eo }  
} w{r8kH  
Cg^:jd  
冒泡排序: ;t!9]1  
>8(jW  
package org.rut.util.algorithm.support; 'B,KFA<  
{"t5\U6cKM  
import org.rut.util.algorithm.SortUtil; \ FXp*FbQ  
~?d>fR:X  
/** ;Yv14{T!  
* @author treeroot hJLT!33:  
* @since 2006-2-2 Qh8C,"a  
* @version 1.0 UBIIo'u  
*/ 8jNOEM(0Y+  
public class BubbleSort implements SortUtil.Sort{ Z0W0uP;J  
2LC w*eT{)  
/* (non-Javadoc) N8QH*FX/F1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TaWaHf  
*/ -x5F;d}  
public void sort(int[] data) { |Qr:!MA  
int temp; }jiK3?e  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 6bUl > 4  
if(data[j] SortUtil.swap(data,j,j-1); j76%UG\Ga  
} %I0}4$  
} QXY}STs  
} @k9Pz<ub  
} 7f r>ZY^  
0MrN:M2B  
} ^vM_kAr A  
1]Lh'.1^  
选择排序: P7UJ-2%Y+  
R>HY:-2  
package org.rut.util.algorithm.support; }1@E"6kF  
f"P$f8$  
import org.rut.util.algorithm.SortUtil; _A3X6  
@ZG>mP1Vo  
/** 6KO(j/Gwp  
* @author treeroot mV;3ILO  
* @since 2006-2-2 abSq2*5K  
* @version 1.0 [T]Bfo  
*/ 5*+I M*c  
public class SelectionSort implements SortUtil.Sort { gyFr"9';c  
G B&:G V  
/* aj v}JV&:  
* (non-Javadoc) tah }^  
* D2]ZMDL.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }I'^./za  
*/ ?0) @jc=  
public void sort(int[] data) { Q.E_:=*H  
int temp; EBwK 7c  
for (int i = 0; i < data.length; i++) { u(Rk'7k  
int lowIndex = i; 'kEG.Oq7  
for (int j = data.length - 1; j > i; j--) { bvp)r[8h  
if (data[j] < data[lowIndex]) { bl$j%gI%,  
lowIndex = j; (Vap7.6;_  
} Z'ao[CG  
} 7_%2xewV|  
SortUtil.swap(data,i,lowIndex); LD_M 3 P  
} /ao<A\KR  
} 7 Kjj?~RA  
%"+4 D,'l  
} z<h|#@\  
/GN4I!LA  
Shell排序: +o u Y  
~#4~_d.=L  
package org.rut.util.algorithm.support; Gk 6fO  
Y;g% e3nu  
import org.rut.util.algorithm.SortUtil; v#F-<?Vv  
3a^)u-9,x  
/** [S)G$JW  
* @author treeroot }<&d]N  
* @since 2006-2-2 Khap9a_q-  
* @version 1.0 dQK`sLChv  
*/ O{u[+g  
public class ShellSort implements SortUtil.Sort{ !t% Q{`p  
.l=p[BI  
/* (non-Javadoc) /tzlbI]z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) = hhvmo  
*/ ,2_w=<hq  
public void sort(int[] data) { F9O`HFVK  
for(int i=data.length/2;i>2;i/=2){ 4|=vxJ  
for(int j=0;j insertSort(data,j,i); ;AJ< LC  
} `@MPkC y1  
} T5q-" W6\  
insertSort(data,0,1); 8,y{q9O  
} m_$JWv\|\  
K( z[ }  
/** MH FaSl  
* @param data 3sb 5E]P  
* @param j vzcz<i )  
* @param i l1DI*0@  
*/ J?,?fqb  
private void insertSort(int[] data, int start, int inc) { k:mlt:  
int temp; ]LVnt-q  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Z)5klg$c  
} .jaZ|nN8`  
} >3!DOv   
} -O%[!&`  
q}s K  
} cyBW0wV1  
g<\>; }e  
快速排序: w?S8@|MK  
| @ *3^'  
package org.rut.util.algorithm.support; K-6p'|  
6i-*N[!U  
import org.rut.util.algorithm.SortUtil; )WmZP3$^TX  
1\IZcJ {  
/** t2U$m'(A&  
* @author treeroot vbedk+dd?A  
* @since 2006-2-2 m#;.yR  
* @version 1.0 kU1 %f o  
*/ 7JS#a=D#  
public class QuickSort implements SortUtil.Sort{ &urb!tQ>&  
L&QtHSzy  
/* (non-Javadoc) ?uig04@3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yi|:}K$  
*/ s&0*'^'O[S  
public void sort(int[] data) { j3LNnZY  
quickSort(data,0,data.length-1); 0R*}QXph  
} NN11}E6  
private void quickSort(int[] data,int i,int j){ GZS{&w!  
int pivotIndex=(i+j)/2; RyE_|]I62u  
file://swap ,8~dz  
SortUtil.swap(data,pivotIndex,j); Zik m?(J  
]| z")gOE  
int k=partition(data,i-1,j,data[j]); 61kO1,Uz*  
SortUtil.swap(data,k,j); y}Cj#I+a  
if((k-i)>1) quickSort(data,i,k-1); 0f{IE@-b  
if((j-k)>1) quickSort(data,k+1,j); C[g&F 0 6  
X~%IM1+L;  
} w0aHEvH/  
/** 7> )l{7  
* @param data jOtzx"/)rE  
* @param i N" ;^S  
* @param j g4Bg6<;  
* @return PK8V2Ttv  
*/ Rd0?zEKV  
private int partition(int[] data, int l, int r,int pivot) { B]i+,u  
do{ "(N-h\7Ex9  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); D"'#one  
SortUtil.swap(data,l,r); 0OEtU5lf`y  
} 7F~xq#Wi#  
while(l SortUtil.swap(data,l,r); j~.u>4  
return l; jWhD5k@v  
} yG4MUf6  
F; 0Dp  
} ^&HI +M  
X!m;uJZp  
改进后的快速排序: oR7 7`  
u$\Tg3du2  
package org.rut.util.algorithm.support; ~O8] 3+U  
y^ 3,X_0  
import org.rut.util.algorithm.SortUtil; |]I#CdO  
,d5ia4\K  
/** nMeSCX  
* @author treeroot I ;l`VtD  
* @since 2006-2-2 fq{I$syY  
* @version 1.0 2AmR(vVa"  
*/ (Y&R0jt  
public class ImprovedQuickSort implements SortUtil.Sort { =w t-YM  
JLt{f=`%F  
private static int MAX_STACK_SIZE=4096; L-SdQTx_  
private static int THRESHOLD=10; ]2g5Ka[>w  
/* (non-Javadoc) 3EO#EYAHiM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q:rT 9&G  
*/ Xp.|.)Od  
public void sort(int[] data) { Y*"<@?n8?x  
int[] stack=new int[MAX_STACK_SIZE]; D=<t;+|  
- f+CyhR"*  
int top=-1; -g~iE]x6Y  
int pivot; VB}PNg  
int pivotIndex,l,r; s9=pV4fA~w  
O $YJku  
stack[++top]=0; 5QNBB|X@  
stack[++top]=data.length-1; =xl7vHn7  
?NQD#  
while(top>0){ 6CCZda@  
int j=stack[top--]; +HYN$>  
int i=stack[top--]; N <ja6Ac  
x[zKtX  
pivotIndex=(i+j)/2; Id; mn}+~  
pivot=data[pivotIndex]; RiwEuY  
[Q7`RB  
SortUtil.swap(data,pivotIndex,j); ;9 lqSv/6  
&0?DL  
file://partition H;4oZ[g  
l=i-1; uV/)Gb*j  
r=j; }6F_2S3c  
do{ NWaI[P  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); `>$g y/N  
SortUtil.swap(data,l,r); %9fa98>  
} !x+MVJ]  
while(l SortUtil.swap(data,l,r); `W6:=H  
SortUtil.swap(data,l,j); Be'?#Qe   
_Jt_2o%G  
if((l-i)>THRESHOLD){ ]KfghRUH  
stack[++top]=i; A632 :V  
stack[++top]=l-1; &:IfhS  
} jqV)V>M.  
if((j-l)>THRESHOLD){ 0q-0zXlSL  
stack[++top]=l+1; ZK W@pW]U  
stack[++top]=j; }//8$Z<(  
} 94S .9A  
2X qPZ]2g  
} ,K"r:)\  
file://new InsertSort().sort(data); e-YGuWGN7  
insertSort(data); |s)VjS4@  
} R;5QD`  
/** wR`w@ 5,d  
* @param data /r #b  
*/ U0lqGEZ  
private void insertSort(int[] data) { ]0at2  
int temp; s:qxAUi\/  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); x0N-[//YV  
} TPV6$a<  
} 11^ {W F  
} {m1t~ S   
'M]CZ}  
} h+ `J=a|\  
^Y1AeJ$L  
归并排序: eP-R""uPw  
r? 6Z1  
package org.rut.util.algorithm.support; 8+@1wks  
R] V~IDs   
import org.rut.util.algorithm.SortUtil; Xuz8"b5^Zx  
OgzGkc@A  
/** nA{ncTg1\  
* @author treeroot ][T9IAn  
* @since 2006-2-2 (@N~ j&  
* @version 1.0 f z/?=  
*/ MZ >0K  
public class MergeSort implements SortUtil.Sort{ g~i''lng  
?(|TP^  
/* (non-Javadoc) 9OO0Ht4j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i75?*ld  
*/ `"^@[1  
public void sort(int[] data) { =PeW$q+  
int[] temp=new int[data.length]; N7Z(lI|a;  
mergeSort(data,temp,0,data.length-1); .j+2x[`l  
} Huug_E+  
f6(9wz$Trt  
private void mergeSort(int[] data,int[] temp,int l,int r){ O4'kS @  
int mid=(l+r)/2; ?[*@T2Ck  
if(l==r) return ; m,kv EQ3  
mergeSort(data,temp,l,mid); |yId6v  
mergeSort(data,temp,mid+1,r); * 7zN  
for(int i=l;i<=r;i++){ 8Pnqmjjj  
temp=data; tOlzOBzR  
} <7sF<KD  
int i1=l; ~]i]kU   
int i2=mid+1; OmoplJ+  
for(int cur=l;cur<=r;cur++){ pE YrmC  
if(i1==mid+1) lL(}dbT~N  
data[cur]=temp[i2++]; lhW#IiX  
else if(i2>r) R+@sHsZ@  
data[cur]=temp[i1++]; qU /Wg  
else if(temp[i1] data[cur]=temp[i1++]; O #p)~V8~  
else i&SBW0)  
data[cur]=temp[i2++]; JXZ:Wg  
} Cx1Sh#9  
} z!t3xFN&/  
Kr+Bt y  
} A{n*NxKCX!  
2C 8L\  
改进后的归并排序: eL] w' }\  
<whPM  
package org.rut.util.algorithm.support; =c5 /cpZ^  
iu:p &h  
import org.rut.util.algorithm.SortUtil; iA{chQBr  
aF4V|?+  
/** [ XY:MU e  
* @author treeroot r)Mx.`d!  
* @since 2006-2-2 3<1HqU  
* @version 1.0 m%[2x#  
*/ Hhce:E@K  
public class ImprovedMergeSort implements SortUtil.Sort { b$$L]$q2  
6r-<XNv)0  
private static final int THRESHOLD = 10;  zxynEdO  
xVwi }jtG|  
/* cvLcre% >A  
* (non-Javadoc) 4)>\rqF+v  
* *M**h-p2'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \Vhp B   
*/ S92 !jp/  
public void sort(int[] data) { MM58w3Mz  
int[] temp=new int[data.length]; #VMBn}   
mergeSort(data,temp,0,data.length-1); N%M>,wT  
} BzG!Rg|J  
qT-nD}  
private void mergeSort(int[] data, int[] temp, int l, int r) { yrv SbqR  
int i, j, k; A5>gLhl7  
int mid = (l + r) / 2; Bbe/w#Z  
if (l == r) YQ[&h  
return; 9Av- ;!]  
if ((mid - l) >= THRESHOLD) ~?8 x0  
mergeSort(data, temp, l, mid); 4 *2>R8SX~  
else TQxc?o  
insertSort(data, l, mid - l + 1); /\Y%DpG$  
if ((r - mid) > THRESHOLD) ~ @"Qm;} "  
mergeSort(data, temp, mid + 1, r); Ul~}@^m]4}  
else Ivgwm6M  
insertSort(data, mid + 1, r - mid); V44sNi  
J W yoh|  
for (i = l; i <= mid; i++) { 7_d#XKz@  
temp = data; ;hJ/t/7  
} #lVl?F+~  
for (j = 1; j <= r - mid; j++) { DuC u6j  
temp[r - j + 1] = data[j + mid]; @OL3&R  
} [8J}da}  
int a = temp[l]; ~Sem_U`G  
int b = temp[r]; '' A[`,3  
for (i = l, j = r, k = l; k <= r; k++) { 1J%qbh  
if (a < b) { :R?| 2l  
data[k] = temp[i++]; *]UEF_  
a = temp; . L6@Rs  
} else { y7L4jO9h  
data[k] = temp[j--]; >A@D;vx  
b = temp[j]; >~bj7M6t  
} gZ%O<XO  
}  Vgb>3]SU  
} X72X:"  
OQb9ijLeK  
/** ;cHI3V  
* @param data fyoB]{$p8  
* @param l aZ:?(u]  
* @param i 2 n+XML  
*/ g1!L. On  
private void insertSort(int[] data, int start, int len) { 9p'J(`  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ny? m&;^r:  
} IF?B`TmZ  
} OU3+SYM  
} {zN_l!  
} 5$G??="K  
Xq)%w#l5?  
堆排序: '!L1z45  
ob5nk ^y  
package org.rut.util.algorithm.support; ~E|V{z%  
G78j$ ^/0  
import org.rut.util.algorithm.SortUtil; %_=R&m'n`  
U=#ylQ   
/** Z1lF[d,f;  
* @author treeroot U\GZ  
* @since 2006-2-2 V4i%|vV  
* @version 1.0 N S}`(N  
*/ G(3la3\(  
public class HeapSort implements SortUtil.Sort{ E&tmWOMj>  
DT]p14@t9  
/* (non-Javadoc) :mHtK)z~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S7>gNE;%]u  
*/ [k{iN1n  
public void sort(int[] data) { Q>c6ouuJ  
MaxHeap h=new MaxHeap(); ->9xw  
h.init(data); "@? kxRn!  
for(int i=0;i h.remove(); Nn7@+g)  
System.arraycopy(h.queue,1,data,0,data.length); y8n1IZ*#SZ  
} TFA  
]TprPU39  
private static class MaxHeap{ P&`r87J  
l%5%oN`4  
void init(int[] data){ [MP :Eeg  
this.queue=new int[data.length+1]; S&) >w5*]U  
for(int i=0;i queue[++size]=data; O!+5As  
fixUp(size); * CGdfdxW  
} &_hCs![  
} =9@yJ9c-  
'*Mb .s"  
private int size=0; mnaD KeA  
ga9:*G!b{)  
private int[] queue; =0yJ2[R7Do  
&/FwV'  
public int get() { xyWdzc] (p  
return queue[1]; :R\v# )C  
} eyjUNHeh#  
:Aiu!}\  
public void remove() { p+D 6Z'B  
SortUtil.swap(queue,1,size--); sBI%lrO  
fixDown(1); !T(Omve)  
} YEoT_>A$dB  
file://fixdown V *y  
private void fixDown(int k) { ,PxQ[CGg  
int j; ^#nWgo7{7  
while ((j = k << 1) <= size) { zm"g,\.d  
if (j < size %26amp;%26amp; queue[j] j++; <]qd9mj5  
if (queue[k]>queue[j]) file://不用交换 tX}S[jdq  
break; DA@hf  
SortUtil.swap(queue,j,k); fsuvg jlE  
k = j; yyDBW`V((  
} -s "$I:v  
} xmx;tq  
private void fixUp(int k) { VjM uU"++@  
while (k > 1) { 4ux5G`oL  
int j = k >> 1; Y &+/[ [  
if (queue[j]>queue[k]) *lO+^\HXD  
break; TBT*j&!L  
SortUtil.swap(queue,j,k); WfO$q^'?DP  
k = j; CxQ,yd;>  
} Khd,|pM  
}  Bz~h-  
s\R?@  
} t+q`h3  
E1g$WhXIS  
} 1\{F.v  
X0TGJ,yW(  
SortUtil: gi >{`.]  
X;>} ;LiK  
package org.rut.util.algorithm; =upP3rw  
H;&t"Ql.  
import org.rut.util.algorithm.support.BubbleSort; .w)t<7 y  
import org.rut.util.algorithm.support.HeapSort; %;?3A#  
import org.rut.util.algorithm.support.ImprovedMergeSort; :!h H`l}p  
import org.rut.util.algorithm.support.ImprovedQuickSort; !S{<Xc'wv  
import org.rut.util.algorithm.support.InsertSort; !WnI`  
import org.rut.util.algorithm.support.MergeSort; ji=po;g=E  
import org.rut.util.algorithm.support.QuickSort; }`FPe   
import org.rut.util.algorithm.support.SelectionSort; 7?] p\`  
import org.rut.util.algorithm.support.ShellSort; ob #XKL  
FR"^?z?}p  
/** Xy&#}S}9  
* @author treeroot $c47cJO)W  
* @since 2006-2-2 Or>[_3  
* @version 1.0 zxdO3I  
*/ Jl ?Q}SB  
public class SortUtil { KL`>mJo$  
public final static int INSERT = 1; v}D!  
public final static int BUBBLE = 2; *?&O8SSBH  
public final static int SELECTION = 3; iK:]Q8b  
public final static int SHELL = 4; )>p6h]]a  
public final static int QUICK = 5; >FNt*tX<0  
public final static int IMPROVED_QUICK = 6; }iAi`_\0;  
public final static int MERGE = 7; ~T9[\nU\  
public final static int IMPROVED_MERGE = 8; it vdzPO  
public final static int HEAP = 9; a| cD{d  
iKY&gnu"  
public static void sort(int[] data) { _AHVMsz@  
sort(data, IMPROVED_QUICK); YfKty0  
} V|7CYkB8  
private static String[] name={ 4/|=0TC;  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" UMaKvr-C&  
}; ;v\n[  
N/VIP0Kb  
private static Sort[] impl=new Sort[]{ zY-m]7Yf  
new InsertSort(), sA.yb,Fw  
new BubbleSort(), ` 454=3H  
new SelectionSort(), JM%#L*;  
new ShellSort(), +dv@N3GV  
new QuickSort(), {%Sw w:  
new ImprovedQuickSort(), ? |dz"=y  
new MergeSort(), h6t>yC\  
new ImprovedMergeSort(), v2V1&-  
new HeapSort() eGil`:JY"  
}; Y~xZ{am  
2Oa-c|F  
public static String toString(int algorithm){ 6 -}gqkR  
return name[algorithm-1]; *93 N0m4Rl  
} i\G3 u#  
DBRJtU!5x  
public static void sort(int[] data, int algorithm) { }dM^6 Kd%  
impl[algorithm-1].sort(data); qQ_QF  
} D6WsEd>  
\2!$HA7P  
public static interface Sort { U_No/$ b  
public void sort(int[] data); W]OT=6u8o  
} gP@ni$n  
+|;IIwo  
public static void swap(int[] data, int i, int j) { 4KnDXQ%  
int temp = data; ,+&j/0U  
data = data[j]; E.9F~&DPJ<  
data[j] = temp; 8^lXM-G-  
} X c^~|%+  
} U<b!$"P9  
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