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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。 gV-A+;u  
插入排序: PLK;y  
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package org.rut.util.algorithm.support; O/fm/  
g`41d  
import org.rut.util.algorithm.SortUtil; v@qVT'qlU  
/** .Q DeS|l  
* @author treeroot awOH50R  
* @since 2006-2-2 f}Uf* Bp  
* @version 1.0 hJ~=eYK?J  
*/ 2Gn26L 5  
public class InsertSort implements SortUtil.Sort{ y~py+:_  
dz )(~@tgz  
/* (non-Javadoc) W9jxw4)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9*? i89T  
*/ N?c!uO|h|  
public void sort(int[] data) { >'&|{s[m  
int temp; P:m6:F@hO  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )/BbASO$)Z  
} )8V=!73  
} o=C'u  
} yzyK$WN\[3  
--F6n/>  
} WI-I+0sE  
e0`5PVJ  
冒泡排序: nRheByYm  
luCwP  
package org.rut.util.algorithm.support; 7~nuFJaTI  
vm8ER,IW)  
import org.rut.util.algorithm.SortUtil; X=%e'P*X  
IkgRZ{Y  
/** A%.ZesjAx  
* @author treeroot :[ll$5E.  
* @since 2006-2-2 1F{,Zr  
* @version 1.0 $)VnHr `hy  
*/ !OMl-:KUzE  
public class BubbleSort implements SortUtil.Sort{ 8l >Xbz  
$[+)N ~  
/* (non-Javadoc) 4 Xe8j55  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .hK:-q,  
*/ C\}M_MD  
public void sort(int[] data) { jXYjs8Iy  
int temp; oVIc^yk5a  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ?I ;PJj  
if(data[j] SortUtil.swap(data,j,j-1); z#/"5 l   
} FR6 PY  
} 1i@a? 27|  
} .FA99|:  
} q)OCY}QA  
Zo}vV2  
} & DhdB0Hjf  
nt*K@  
选择排序: 7 /XfPF  
/NQ PTr  
package org.rut.util.algorithm.support; 3|4<SMm  
0t6DD  
import org.rut.util.algorithm.SortUtil; ;1q|SmF  
RSup_4A  
/** Xx ou1l!  
* @author treeroot _Oy;:XN  
* @since 2006-2-2 | &/_{T  
* @version 1.0 ^#4Ah[:XA  
*/ @nIoIz D~  
public class SelectionSort implements SortUtil.Sort { XCyrr 2^  
{pC$jd>T  
/* B{>x  
* (non-Javadoc) ?b\oM v5y  
* ;3+_aoY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hd_,`W@  
*/ hpYW1kfQl  
public void sort(int[] data) { i'[! 'HY  
int temp; 2W }j bOy  
for (int i = 0; i < data.length; i++) { R]4 h)"  
int lowIndex = i; C0CJ;   
for (int j = data.length - 1; j > i; j--) { D+{& zo  
if (data[j] < data[lowIndex]) { L+8O 4K{  
lowIndex = j; \w)ddc!ZS  
} Op:$7hv  
} v[O?7Np  
SortUtil.swap(data,i,lowIndex); 'u6n,yRm  
} 2IXtIE  
} h;):TFiC  
e<+b?@}=B  
} f9vitFkb+  
kc<5wY_t  
Shell排序: ?*'0;K13  
9(lcQuE9  
package org.rut.util.algorithm.support; V,]Fh5f  
Hp[i8PJ  
import org.rut.util.algorithm.SortUtil; ?%$~Bb _  
jtgj h\Nt  
/** nK#%Od{GF  
* @author treeroot m;!X{CV  
* @since 2006-2-2 (,b\"Q  
* @version 1.0 (6&"(}Pai  
*/ I8k+Rk*  
public class ShellSort implements SortUtil.Sort{ uw(Ml=  
"bz]5c~  
/* (non-Javadoc) M5 ^qc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h=^UMat-  
*/ ~zVe?(W  
public void sort(int[] data) { ()5X<=i  
for(int i=data.length/2;i>2;i/=2){ dFmpx%+p  
for(int j=0;j insertSort(data,j,i); k106fT]eX  
} \\3 ?ij:v  
} 4 RfBXVS  
insertSort(data,0,1); I= a?z<  
} zx@L sp  
TeFi[1  
/** $LiBJ~vV<  
* @param data 2w fkXS=~6  
* @param j Q:Ma3El\  
* @param i N:~4>p44[  
*/ bz.sWBugR  
private void insertSort(int[] data, int start, int inc) { N%%trlDXD  
int temp; r_kaS als  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 9FPqd8(]*V  
} 204"\ mv  
} 'S*]JZ1  
} }aQ*1Vcj  
(p] S  
} Rtlc&Q.b  
oDayfyy4y)  
快速排序: t+\<i8  
Q$sC%P(y  
package org.rut.util.algorithm.support; K(HrwH`a{  
N-q6_  
import org.rut.util.algorithm.SortUtil; <p-@XzyE  
;aD?BD__Z  
/** +\?+cXSc  
* @author treeroot |*M07Hc x  
* @since 2006-2-2 `g4N]<@z  
* @version 1.0 ^Cvt^cI  
*/ {?"X\5n0  
public class QuickSort implements SortUtil.Sort{ <":83RCS  
>V4r '9I  
/* (non-Javadoc) IZ87Px>zL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *`LrvE@t  
*/ \HG4i/V:h  
public void sort(int[] data) { %@|)&][hO  
quickSort(data,0,data.length-1); C6h[L  
} Onou:kmf1  
private void quickSort(int[] data,int i,int j){ H328I}7  
int pivotIndex=(i+j)/2; Zj_2B_|WN#  
file://swap 1$`|$V1  
SortUtil.swap(data,pivotIndex,j); %9J:TH9E)  
QpRk5NeLe  
int k=partition(data,i-1,j,data[j]); U#Iwe=  
SortUtil.swap(data,k,j); f( 5; Rf(  
if((k-i)>1) quickSort(data,i,k-1); 2.]d~\  
if((j-k)>1) quickSort(data,k+1,j); f6nuh&!-  
0)7v _|z  
} (44L8)I.D  
/** `Q#)N0  
* @param data ~wOMT  
* @param i b5I 8jPj4c  
* @param j  WFhppi   
* @return +U%epq  
*/ 7oc Ng  
private int partition(int[] data, int l, int r,int pivot) { _wX(OB  
do{ <:T/hm$  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); X.FoX  
SortUtil.swap(data,l,r); G l2WbY  
} 9a_UxF+6/  
while(l SortUtil.swap(data,l,r); fY?:SPR+  
return l; ?L H[,8z  
} MgN;[4|[h  
TTbJ9O<43  
} {P\Ob0)q  
j]` hy"  
改进后的快速排序: [*I7^h%  
~66v.`K!  
package org.rut.util.algorithm.support; %_CL/H   
[O|c3;  
import org.rut.util.algorithm.SortUtil; p@O,-&/D  
-3wid1SOm  
/** 3Zs0W{OxU  
* @author treeroot L{l}G,j<  
* @since 2006-2-2 Y,EF'Ot  
* @version 1.0 kmo#jITa`  
*/ W(?J,8>  
public class ImprovedQuickSort implements SortUtil.Sort { ^,?>6O  
wZbT*rU  
private static int MAX_STACK_SIZE=4096; Pth4_]US  
private static int THRESHOLD=10; i_+e&Bjd4j  
/* (non-Javadoc) ;-l^X%r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;=E}PbZt2  
*/ $G9E=wn  
public void sort(int[] data) { R/Sm  
int[] stack=new int[MAX_STACK_SIZE]; TiZ MY:^  
Dq9f Fe  
int top=-1; B|+% ExT7  
int pivot; !{ _:k%B  
int pivotIndex,l,r; YcR: _ac  
/R?*i@rvf  
stack[++top]=0; gbh/ `  
stack[++top]=data.length-1; T nyLVIP  
QwF.c28[  
while(top>0){ 4`cfFowK~  
int j=stack[top--]; I$)9T^Ra  
int i=stack[top--]; eb,QT\/G  
:0Y.${h  
pivotIndex=(i+j)/2; (Ia:>ocE0  
pivot=data[pivotIndex]; 6z/&j} (  
mUR[;;l  
SortUtil.swap(data,pivotIndex,j); z~v-8aw  
C:bA:O  
file://partition rXip"uz(K>  
l=i-1; ~)X;z"y%b  
r=j;  :J)^gc  
do{ Gz8JOl  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); NcX-* o  
SortUtil.swap(data,l,r); #-R]HLW*  
} L]BTX]  
while(l SortUtil.swap(data,l,r); ^r]-v++  
SortUtil.swap(data,l,j); ,5K&f\  
FgPmQ  
if((l-i)>THRESHOLD){ *]kE3  
stack[++top]=i; kjQI=:i=  
stack[++top]=l-1; XoMgb DC  
} fg1uqS1rg  
if((j-l)>THRESHOLD){ [ei5QSL |  
stack[++top]=l+1; 'Nx"_jQ  
stack[++top]=j; gK dNgU  
} Mz lE  
6jl{^dI  
} 6Hd^qouid  
file://new InsertSort().sort(data); G~Y#l@8M+  
insertSort(data); WCp[6g&%O  
} v57Kr ,  
/** F{}:e QD  
* @param data u/\Ipk/  
*/ jar?"o  
private void insertSort(int[] data) { $ WWi2cI;  
int temp; sn@)L~$V  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 91#n Aj%  
} x_H"<-By  
} vha@YPC=  
} , -Lv3  
EVbDI yFn  
} *I9G"R8  
z]O>`50Q  
归并排序: b|`  
D,uT#P  
package org.rut.util.algorithm.support; ]d&;QZ#w  
RWn#"~  
import org.rut.util.algorithm.SortUtil; !|Y&h0e  
#- d-zV*  
/** |'#uV)b0@  
* @author treeroot Gs}lw'pK  
* @since 2006-2-2 yhyh\.  
* @version 1.0 @jD19=  
*/ $I /RN  
public class MergeSort implements SortUtil.Sort{ @gJPMgF$F  
]m^ECA$  
/* (non-Javadoc) @{880 5Dp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i"hn%u$V  
*/  aK9zw  
public void sort(int[] data) { ?T_hK  
int[] temp=new int[data.length]; #Cz:l|\ i  
mergeSort(data,temp,0,data.length-1); w;^7FuBaC  
} /s`xPxvt  
.ZH5^Sv$vp  
private void mergeSort(int[] data,int[] temp,int l,int r){ Xc]Q_70O  
int mid=(l+r)/2; 9M-/{D^+<  
if(l==r) return ; H*>5ne=x  
mergeSort(data,temp,l,mid); gH/k}M7tA#  
mergeSort(data,temp,mid+1,r); ^KFwO=I@PV  
for(int i=l;i<=r;i++){ ^kj%Ekt7  
temp=data; 2VS#=i(B^  
} :y[tZ&*<_?  
int i1=l; p&;,$KDA  
int i2=mid+1; *r]#jY4qx  
for(int cur=l;cur<=r;cur++){ hn u/  
if(i1==mid+1) rx;zd?  
data[cur]=temp[i2++]; %|3UWN  
else if(i2>r) )F35WP~  
data[cur]=temp[i1++]; "mkTCR^]e  
else if(temp[i1] data[cur]=temp[i1++]; \(ZOt.3!J  
else DnPV Tp(>  
data[cur]=temp[i2++]; D$c4's `5  
} :YZMR JL  
} ;rH@>VrR  
mCx6$jz  
} J&6]3x  
V]9 ?9-r  
改进后的归并排序: Zx]"2U#  
_/!IjB:(70  
package org.rut.util.algorithm.support; !xK`:[B  
1cdM^k  
import org.rut.util.algorithm.SortUtil; Z5o6RTi  
]Z\.Vx  
/** W7"ks(  
* @author treeroot f/qG:yTV`  
* @since 2006-2-2 zW^@\kB0D  
* @version 1.0 #X"eg  
*/ )y:~T\g  
public class ImprovedMergeSort implements SortUtil.Sort { 6]^}GyM!  
O(PG"c  
private static final int THRESHOLD = 10; =6TD3k6(2  
(v8jVbg  
/* Y75,{1\l0  
* (non-Javadoc) LdAfY0  
* v }ZQC8wL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F XOA1VEg  
*/ D[)g-_3f6<  
public void sort(int[] data) { X &6p_Lo  
int[] temp=new int[data.length]; Khxl 'qj  
mergeSort(data,temp,0,data.length-1); T?c:z?j_9  
} |,Y(YSg.  
[L,Tf_t^Y  
private void mergeSort(int[] data, int[] temp, int l, int r) { Xb=9~7&,$  
int i, j, k; (&FSoe/!['  
int mid = (l + r) / 2; R;f!s/^)  
if (l == r) `Q*L!/K+  
return; [= -?n6  
if ((mid - l) >= THRESHOLD) 4*_9Gl  
mergeSort(data, temp, l, mid); /4]M*ls  
else ZO+c-!%[(  
insertSort(data, l, mid - l + 1); fNc3&=]]  
if ((r - mid) > THRESHOLD) }}v;V*_V  
mergeSort(data, temp, mid + 1, r); WLEjRx  
else e@6<mir[4  
insertSort(data, mid + 1, r - mid); / PAxPZf_  
k#% BxT  
for (i = l; i <= mid; i++) { aO?(ZL  
temp = data; SqTO~zGC  
} #m6 eG&a  
for (j = 1; j <= r - mid; j++) { ao<@a{G  
temp[r - j + 1] = data[j + mid]; ]%3o"|  
} )W~w72j-  
int a = temp[l]; *Y6BPFE*4  
int b = temp[r]; G@anY=D\EB  
for (i = l, j = r, k = l; k <= r; k++) { utC]GiR  
if (a < b) { Aq}]{gfQ1  
data[k] = temp[i++]; 4,T!zT6&  
a = temp; %zyO}  
} else { /+ vl({vV  
data[k] = temp[j--]; `(<XdlOj  
b = temp[j]; q-3%.<LL  
} 3HC aZ?Ry'  
} 6|t4\'  
} q 4PRc<\^  
-@-cG\{  
/** @!&\Z[",  
* @param data c$Js<[1  
* @param l J (Yfup  
* @param i 5@bLD P  
*/ B5aFt ;Vj  
private void insertSort(int[] data, int start, int len) { 4r`u@  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 5zX;/n~  
} 8*I43Jtlf,  
} (Kd;l &8  
} a;D{P`%n  
} yv^j~  
IL?3>$,  
堆排序: 8E"Ik ~  
eyy{z;D8r  
package org.rut.util.algorithm.support; ngj=w;7~+  
e'mm42  
import org.rut.util.algorithm.SortUtil; W~k"`g7uu  
^[Cpu_]D  
/** 2Otd  
* @author treeroot }:7'C. ."  
* @since 2006-2-2 >_(Xb %w  
* @version 1.0 nV ko]y  
*/ ao#{N=mn  
public class HeapSort implements SortUtil.Sort{ gEbe6!; q3  
Wc ]BQn  
/* (non-Javadoc) ifl`QZp_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \R yOexNZ  
*/ #ok1qT9_  
public void sort(int[] data) { l9"0Wu@_x  
MaxHeap h=new MaxHeap(); b26#0;i  
h.init(data); ~UX@%0%)N  
for(int i=0;i h.remove(); P7O$*  
System.arraycopy(h.queue,1,data,0,data.length); sxIvL7jl  
} i-w^pv'  
T_|%n F-+  
private static class MaxHeap{ 2%i_SX[  
IL`X}=L_  
void init(int[] data){ R7}=k)U?d@  
this.queue=new int[data.length+1]; 2jV.\C k  
for(int i=0;i queue[++size]=data; {m~.'DU  
fixUp(size); CRf!tsj@  
} iZ % KHqG  
} ;= ^kTb`X  
GOuBNaU {  
private int size=0; cih@: =Qy  
u :AKp<'  
private int[] queue; GTL gj'B  
]Ir{9EE v  
public int get() { nf=*KS\v  
return queue[1]; ?=,4{(/)  
} $Wt0e 4YSu  
u UXj  
public void remove() { Tlc3l}B*Z  
SortUtil.swap(queue,1,size--); !=%0  
fixDown(1); s+IU%y/9$a  
} .XDY1~w0  
file://fixdown yN}upYxp  
private void fixDown(int k) { vU,AOK[l{  
int j; C_xO k'091  
while ((j = k << 1) <= size) { #yz5CWu  
if (j < size %26amp;%26amp; queue[j] j++; 8axz`2`  
if (queue[k]>queue[j]) file://不用交换 rP$vZ^/c  
break; >SRUC  
SortUtil.swap(queue,j,k); `q =e<$  
k = j; n.9k<  
} -+MGs]),  
} s+#|j;V<  
private void fixUp(int k) { \i1>/`F  
while (k > 1) { Z{-x}${  
int j = k >> 1; 8/q6vk><  
if (queue[j]>queue[k]) nADt8  
break; &XG k  
SortUtil.swap(queue,j,k); x~1.;dBF  
k = j; 9 {&APxm  
} P(iZGOKUs=  
} yLv jfP1  
MV8Lk/zd?A  
} jvfVB'Tmr  
w\(LG_n|  
} IX/FKSuq  
nT7{`aaQl  
SortUtil:  3Ee8_(E\  
VrG4wLpLs  
package org.rut.util.algorithm; si`{>e~`6P  
9{OH%bF  
import org.rut.util.algorithm.support.BubbleSort; >y P`8Oq[  
import org.rut.util.algorithm.support.HeapSort; PT2b^PP  
import org.rut.util.algorithm.support.ImprovedMergeSort; [>`[1;aX  
import org.rut.util.algorithm.support.ImprovedQuickSort; xL.T}f~y2>  
import org.rut.util.algorithm.support.InsertSort; aFkxR\x 6%  
import org.rut.util.algorithm.support.MergeSort; fwR3=:5~  
import org.rut.util.algorithm.support.QuickSort; r 5$(  
import org.rut.util.algorithm.support.SelectionSort; !83x,*O  
import org.rut.util.algorithm.support.ShellSort; ]>utLi5dX  
]U :1N C"  
/** >v4k_JX  
* @author treeroot .aRL'1xHl  
* @since 2006-2-2 to0tH^pD  
* @version 1.0 C=LXL1x2e  
*/ 3YY<2<  
public class SortUtil { ' pE %'8R  
public final static int INSERT = 1; \L#BAB6z  
public final static int BUBBLE = 2; `_2#t1`u  
public final static int SELECTION = 3; X,- ' v[z  
public final static int SHELL = 4; DdI7%?hK  
public final static int QUICK = 5; "Y&+J@]  
public final static int IMPROVED_QUICK = 6; Q*TxjE7K  
public final static int MERGE = 7; 7R\!'`]\M  
public final static int IMPROVED_MERGE = 8; ht^U VV2  
public final static int HEAP = 9; C9-9cdW H  
c$f|a$$b   
public static void sort(int[] data) { -X#J<u T/  
sort(data, IMPROVED_QUICK); $XS0:C0  
} }@'xEx  
private static String[] name={ v9~Hl   
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" TJtW?c7  
}; X$JO<@x  
syh0E= If_  
private static Sort[] impl=new Sort[]{ $"{V],:T |  
new InsertSort(), ~H0~5v F  
new BubbleSort(), :C42yQAP  
new SelectionSort(), ;U<) $5  
new ShellSort(), Zn3iLAPBX  
new QuickSort(), e,E;\x &  
new ImprovedQuickSort(), ej,MmLu~^  
new MergeSort(), (2@b ,w^  
new ImprovedMergeSort(), f/)3b`$Wu  
new HeapSort() mxHNK4/  
}; $2BRi@  
%9mCgHQ9  
public static String toString(int algorithm){ pb%#`2"  
return name[algorithm-1]; ./<3jf :  
} &3{:h  
d$rJW m5H  
public static void sort(int[] data, int algorithm) { mUy/lo'4  
impl[algorithm-1].sort(data); $!I$*R&  
} VhSKtD1  
K=sQ_j.&Z  
public static interface Sort {  CjQ_oNI  
public void sort(int[] data); svpWABO  
} Lu:!vTRmw  
aic6,>\!'  
public static void swap(int[] data, int i, int j) { 6X|KKsPzX  
int temp = data; Q\=u2}/z0  
data = data[j]; KvilGh10  
data[j] = temp; kq%`9,XE  
} N83RsL "}_  
} +G/~v`Bv  
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