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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。 Vfb<o"BQk  
插入排序: o94P I*.  
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package org.rut.util.algorithm.support; (:JjQ`i  
Ln:lC( '  
import org.rut.util.algorithm.SortUtil; O!/ekU|,r  
/** ,b$z!dvhl  
* @author treeroot Ac J>$L)  
* @since 2006-2-2 1p~5h(jI  
* @version 1.0 $-Cy  
*/ #o~[1K+Yq  
public class InsertSort implements SortUtil.Sort{ j+nv=p  
(p^S~Ax  
/* (non-Javadoc) %Sc=_%6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1PmX." a  
*/ N_0pO<<cs  
public void sort(int[] data) { ::ri3Tu  
int temp; O6/xPeak  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Q@3B{  
} _g65pxt =Z  
} !h?=Wv ==]  
} YKNb59k  
uO"y`$C$_  
} /Ad6+cY  
v3~FR,Kl  
冒泡排序: w\p9J0  
DDWp4`CS|  
package org.rut.util.algorithm.support; |ebvx?\  
yYg   
import org.rut.util.algorithm.SortUtil; $:(z}sYQ7  
0Lx3]"v  
/** E_]k>bf\  
* @author treeroot Xh`"  
* @since 2006-2-2 } +1'{B"I  
* @version 1.0 sx:Hv1d  
*/ uQWp+}>ZJy  
public class BubbleSort implements SortUtil.Sort{ `wf|uM  
Ep<YCSQy$i  
/* (non-Javadoc) $Vsy%gA<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9?$RO[vo  
*/ x`#22"m  
public void sort(int[] data) { 4? v,wq  
int temp; ,! hnm  
for(int i=0;i for(int j=data.length-1;j>i;j--){ V +.Q0$~F5  
if(data[j] SortUtil.swap(data,j,j-1); zx7#)*  
} 2p+C%"n>  
} dt<~sOT3s  
} -nOq\RYV  
} v"/TmiZ  
ZOC#i i`:  
} >GmN~"iJ  
QTfu:m{  
选择排序: &/iFnYVhy  
>2u y  
package org.rut.util.algorithm.support; g9`[Y~  
YQ+^  
import org.rut.util.algorithm.SortUtil; -( (Z@T1k  
O <>#>[  
/** s+'XQs^{aj  
* @author treeroot !:dL~n  
* @since 2006-2-2 !D7"=G}HD  
* @version 1.0 $M39 #a  
*/ #%4=)M>^  
public class SelectionSort implements SortUtil.Sort { Hk~k@Wft  
+ LS3T^  
/* _=?2 3  
* (non-Javadoc) z|Ap\[GS  
* ]{Z8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V8tghw  
*/ # 3.\j"b  
public void sort(int[] data) { z(rK^RT  
int temp; h07eE g  
for (int i = 0; i < data.length; i++) { l^ Rm0t_  
int lowIndex = i; JCNk\@0i*  
for (int j = data.length - 1; j > i; j--) { l 1|~  
if (data[j] < data[lowIndex]) { }I]W'<jY  
lowIndex = j; /h7.oD8CU  
} P2t_T'R}  
} E0<)oQ0Xa>  
SortUtil.swap(data,i,lowIndex); 1 #q^uqO0  
} >K5~:mx#3  
} aiJnfU]W  
bs BZ E  
} R3Ee%0QK  
Fe5jdV<  
Shell排序: \q,s?`+B  
6{8/P'@/Zz  
package org.rut.util.algorithm.support; >J@egIKzP  
05"qi6tncz  
import org.rut.util.algorithm.SortUtil; L_k9g12  
%E  aE,  
/** |Q5+l.%  
* @author treeroot K\aAM;)-  
* @since 2006-2-2 JN|VPvjE   
* @version 1.0 <XvYa{t]{  
*/ JtFiFaCxY  
public class ShellSort implements SortUtil.Sort{ S~> 5INud  
t$5jx  
/* (non-Javadoc) ZtR&wk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 26 ?23J ;  
*/ St2Q7K5s{  
public void sort(int[] data) { 0E1=W 6UZ  
for(int i=data.length/2;i>2;i/=2){ ~{P:sjsU  
for(int j=0;j insertSort(data,j,i); vtZ?X';wh  
} >D~w}z/fk  
} Z(`r-}f I  
insertSort(data,0,1); |(RZ/d<X\a  
} "$DldHC  
6rT4iC3Q{  
/** _Z.cMYN  
* @param data {-h, ZdH^  
* @param j G5;V.#"Z[  
* @param i LN\[Tmd &  
*/ Z\'wm'  
private void insertSort(int[] data, int start, int inc) { PtqGX=u  
int temp; Oy%Im8.-A#  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); :!']p2B  
} 'W(xgOP1  
} (A uPZ  
} "S(yZ6r"  
e3g_At\  
} rREzM)GA  
7*;^UqGjz  
快速排序: C\A49q  
,T{oy:rB  
package org.rut.util.algorithm.support; -X8eabb  
EHhd;,;O  
import org.rut.util.algorithm.SortUtil; wV:C<Mg7q  
jtCZfFD?  
/** `kPc!I7Y  
* @author treeroot vhpvO >Q  
* @since 2006-2-2 0bSz4<}  
* @version 1.0 :u-.T.zZl  
*/ Wcn[gn<  
public class QuickSort implements SortUtil.Sort{ [ f34a  
^K;hn,R=  
/* (non-Javadoc) "H?QqrKx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +Vy_9I(4Z  
*/ v?)SA];  
public void sort(int[] data) { r[!(?%>j  
quickSort(data,0,data.length-1); :,^>d3k  
} /PW&$P1.]"  
private void quickSort(int[] data,int i,int j){ Egf^H>,.M  
int pivotIndex=(i+j)/2; e9:P9Di(b  
file://swap !F$R+A+L  
SortUtil.swap(data,pivotIndex,j); :Eo8v$W\RB  
/>F.Nsujy  
int k=partition(data,i-1,j,data[j]); 02pplDFsM  
SortUtil.swap(data,k,j); hfv%,,e  
if((k-i)>1) quickSort(data,i,k-1); /WYh[XKe  
if((j-k)>1) quickSort(data,k+1,j); t%$@fjz  
1a8$f5  
} 6v>z h  
/** \iga Q\~  
* @param data (tKMBxQo8  
* @param i `pm>'  
* @param j ;RHNRVP  
* @return e "n|jRh  
*/ v ): V  
private int partition(int[] data, int l, int r,int pivot) { RHI&j~  
do{ 3\+N`!  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); N,|r1u9X#  
SortUtil.swap(data,l,r); A?,A( -0C  
} $:;%bjSI  
while(l SortUtil.swap(data,l,r); l[*sHi  
return l; rN#\AN  
} a:}E& ,&M  
mgcN(n1  
} 2*Q3.2 Z  
Y&GuDLUF  
改进后的快速排序: ,C:o`fQ\  
!Rqx2Q  
package org.rut.util.algorithm.support; gQ+9xTd  
]nc2/S%  
import org.rut.util.algorithm.SortUtil; t 7^D-l  
KTv4< c]  
/** s#P:6]Ar  
* @author treeroot sUc iFAb  
* @since 2006-2-2 'hIU_  
* @version 1.0 +>#e=nH  
*/ M5O'=\+,F  
public class ImprovedQuickSort implements SortUtil.Sort { }"4roJ  
oIxH3T  
private static int MAX_STACK_SIZE=4096; x8/us  
private static int THRESHOLD=10; O^NP0E  
/* (non-Javadoc) WK4@:k m6)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \O? u*  
*/ >UWStzH<  
public void sort(int[] data) { xiCN qk3  
int[] stack=new int[MAX_STACK_SIZE]; WsB3SFNG  
^1VbH3M  
int top=-1; DqlK.  
int pivot; 2LK]Q/WG,+  
int pivotIndex,l,r; ]3+``vL  
X+at%L=  
stack[++top]=0; '=#5(O%pp  
stack[++top]=data.length-1; 9-93aC.|}  
Ux_<d?p  
while(top>0){ i| 4_ m  
int j=stack[top--]; xYwkFB$$*  
int i=stack[top--]; 2-s7cXs  
OZT^\Ky_l  
pivotIndex=(i+j)/2; sg$4G:l  
pivot=data[pivotIndex]; [#Fg\2bq_y  
@yKZRwg  
SortUtil.swap(data,pivotIndex,j); 5~U:@Tp  
xlw 2g<s  
file://partition p8>R#9  
l=i-1; @d)LRw.I  
r=j; ohsH2]C  
do{ ,R~eY?{a  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); .YC;zn^  
SortUtil.swap(data,l,r); VA2<r(y~(  
} ?Pnx ~m{%*  
while(l SortUtil.swap(data,l,r); QnU0"_-  
SortUtil.swap(data,l,j); Q S;F+cmTh  
B{PLIisc  
if((l-i)>THRESHOLD){ 9P0yv3  
stack[++top]=i; Pgev)rh[  
stack[++top]=l-1; g}r^Xzd;  
} Snx<]|  
if((j-l)>THRESHOLD){ +6376$dC  
stack[++top]=l+1; @/(@/*+"  
stack[++top]=j; LzE/g)>  
} 9[sG1eP!  
5p )IV>G  
} 9A+M|;O  
file://new InsertSort().sort(data); 9GPb$ gtx  
insertSort(data); 7}o6_i  
} :l`i4kx  
/** I.9o`Q[8&  
* @param data {+\'bIV[  
*/ L$}g3{  
private void insertSort(int[] data) { LU( %K{9  
int temp; M')bHB(~v  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); I%i:)6Un-y  
} j6og3.H-  
} PY -+Bf  
} A8!Ed$@  
k9&@(G[K3  
} )UP8#|$#T  
)-q\aX$])  
归并排序: eE9|F/-L  
N5KEa]k1nw  
package org.rut.util.algorithm.support; ^K.*.|  
gn`zy9PU  
import org.rut.util.algorithm.SortUtil; ls]H6z*q  
C$K+=jT  
/** G * @@K  
* @author treeroot B-dlm8gX  
* @since 2006-2-2 e`AUYli"  
* @version 1.0 fkG##!  
*/ 4,zvFH*AH  
public class MergeSort implements SortUtil.Sort{ }! =U^A)  
97S? ;T  
/* (non-Javadoc) '=@r7g.2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H+R7X71{  
*/ 5& *zY)UL  
public void sort(int[] data) { ;Z4o{(/zU  
int[] temp=new int[data.length]; AWL[zixR  
mergeSort(data,temp,0,data.length-1); ~v\hIm3=m  
} s ^3[W0hL  
]?# #))RUS  
private void mergeSort(int[] data,int[] temp,int l,int r){ `VXZ khm  
int mid=(l+r)/2; - `4Ty*K  
if(l==r) return ; ENyAF%6  
mergeSort(data,temp,l,mid); 8 ?" Ze(  
mergeSort(data,temp,mid+1,r); _k|g@"  
for(int i=l;i<=r;i++){ 0 {,h.:  
temp=data; V&R$8tpz  
} GmAj</~  
int i1=l; K plM['uF  
int i2=mid+1; JaFUcpZk$  
for(int cur=l;cur<=r;cur++){ eQ\jZ0s;p  
if(i1==mid+1) 2/EK`S  
data[cur]=temp[i2++]; ,{+6$h3  
else if(i2>r) ? rQc<;b  
data[cur]=temp[i1++]; Q)T+r~#2B  
else if(temp[i1] data[cur]=temp[i1++]; /yp/9r@T0  
else {wv&t R;  
data[cur]=temp[i2++]; }1F6?do3&  
} &M= 3{[  
} EIPnm%{1  
c"qPTjY  
} w49{-Pp[  
/4-}k  
改进后的归并排序: \kyM}5G(<0  
Vpw[B.v  
package org.rut.util.algorithm.support; 5Edo%Hd6  
C/y(E |zC$  
import org.rut.util.algorithm.SortUtil; zU b8NOi  
hMWo\qM  
/** ?DRR+n _  
* @author treeroot X?R |x[  
* @since 2006-2-2 :t%)5:@A  
* @version 1.0 dEG ]riO  
*/ Fn> <q:  
public class ImprovedMergeSort implements SortUtil.Sort { Uh%6LPg^  
]'e A O  
private static final int THRESHOLD = 10; KD=bkZ&  
iU XM( ]  
/* >+SZd7p  
* (non-Javadoc) 9 R  
* aH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kJ__:rS(T_  
*/ hm6pxFkX_  
public void sort(int[] data) { 'mUI-1GkT  
int[] temp=new int[data.length]; 4@mso+tk  
mergeSort(data,temp,0,data.length-1); /L$NE$D} "  
} r*]uR /Z$  
? o sfL  
private void mergeSort(int[] data, int[] temp, int l, int r) { q^%5HeV 2  
int i, j, k; =oPng= :  
int mid = (l + r) / 2; q#|r   
if (l == r) +NT:<(;|i5  
return; fQ1 0O(`g,  
if ((mid - l) >= THRESHOLD) Qi"'bWX@  
mergeSort(data, temp, l, mid); 9':/Sab:7v  
else oAaf)?8  
insertSort(data, l, mid - l + 1); ^9s"FdB]24  
if ((r - mid) > THRESHOLD) P|8e%P  
mergeSort(data, temp, mid + 1, r); /0l-mfRr  
else ^H-QYuz:T0  
insertSort(data, mid + 1, r - mid); Qj:{p5H'  
.X^43 q  
for (i = l; i <= mid; i++) { 9j2\y=<&  
temp = data; _\!0t  
} '(XW$D  
for (j = 1; j <= r - mid; j++) { 4Lw'v:(  
temp[r - j + 1] = data[j + mid]; x.o3iN[=  
} C6CGj8G  
int a = temp[l]; }`#B f  
int b = temp[r]; t +J)dr  
for (i = l, j = r, k = l; k <= r; k++) { zG<0CZQ8  
if (a < b) { "!^c  
data[k] = temp[i++]; 'cYQ ?;  
a = temp; ze ?CoDx2  
} else { tbY  SK  
data[k] = temp[j--]; =:;YTie  
b = temp[j]; h>.9RX &  
} pb6 Q?QG,  
} &%}bRPUl  
} wCC-Y kA  
7Y)s#FJ  
/** y6\ [1nZ  
* @param data {aT92-D3  
* @param l jKYm/}d  
* @param i BjN{@ aEO  
*/ 6Z$b?A3zM  
private void insertSort(int[] data, int start, int len) { V.U|OQouT  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); rrYp'L  
} GgT=t)}wu  
} }~V,_Fv  
} Xa>}4j.  
} |fx#KNPf]  
f7S^yA[[  
堆排序: L+uOBW_  
-GK'V  
package org.rut.util.algorithm.support; 5vYsA1Z  
3/:LYvM<  
import org.rut.util.algorithm.SortUtil; >d'EInSF  
qq/_yt  
/** ]gEu.Nth`  
* @author treeroot ipfm'aQ  
* @since 2006-2-2 T4l-sJ'|  
* @version 1.0 k-io$  
*/ yB|]LYh  
public class HeapSort implements SortUtil.Sort{ +A&EKk%$ |  
P&h/IBA_  
/* (non-Javadoc) MwN1]d|6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HK^a:BI  
*/ <nf=SRZ  
public void sort(int[] data) { ~ >4@;  
MaxHeap h=new MaxHeap(); t&8<k+m  
h.init(data); G[vUOEU ~O  
for(int i=0;i h.remove(); a pKa4nI  
System.arraycopy(h.queue,1,data,0,data.length); g<0w/n!jmC  
} Ja^7$WY  
!'Gb$l!  
private static class MaxHeap{ ZWov_  
^Kb9@lz/  
void init(int[] data){ _T_PX$B  
this.queue=new int[data.length+1]; )H.ubM1  
for(int i=0;i queue[++size]=data; C:WtCAm(  
fixUp(size); >aX:gN  
} 3KDu!w@  
} >t2]Ssi(  
{6-;P#Q0_  
private int size=0; |+>%o.M&i  
m9v"v:Pw  
private int[] queue; dCW0^k  
{K<~ vj;  
public int get() { H f!9`R[  
return queue[1]; b,=,px  
} iXt4|0  
xU#]w6  
public void remove() { z<FV1niE  
SortUtil.swap(queue,1,size--); /QV [N  
fixDown(1); ~+7ad$   
} *Pa2bY3:  
file://fixdown &n}8Uw0440  
private void fixDown(int k) { vcaBL<io  
int j; {yGZc3e1j  
while ((j = k << 1) <= size) { Kc%tnVyGh:  
if (j < size %26amp;%26amp; queue[j] j++; 0G+L1a-  
if (queue[k]>queue[j]) file://不用交换 v+|@}9|Z  
break; |`N$>9qN  
SortUtil.swap(queue,j,k); ?v0A/68s#  
k = j; XfD z #  
} p_D on3  
} Y8x(#qp,  
private void fixUp(int k) { hWl""66+5  
while (k > 1) { K7)j  
int j = k >> 1; ,Zf :R  
if (queue[j]>queue[k]) Y*]l|)a6_]  
break; ~e,f)?  
SortUtil.swap(queue,j,k); >DSNKU+j  
k = j; ~gSF@tz@  
} MYur3lj%_  
} FKDamHL<  
buMiJzU  
} C5.\;;7^&  
Q1P,=T@  
} $8<j5%/ $M  
GapX$Jb,p  
SortUtil: zav*  
PPuXas?i  
package org.rut.util.algorithm; z226yNlS  
>$#*`6R  
import org.rut.util.algorithm.support.BubbleSort; M6@'9E]|>  
import org.rut.util.algorithm.support.HeapSort; ~(Ih~/5\^  
import org.rut.util.algorithm.support.ImprovedMergeSort; yVu^ >  
import org.rut.util.algorithm.support.ImprovedQuickSort; LAu+{'O\  
import org.rut.util.algorithm.support.InsertSort; 0KWy?6 X  
import org.rut.util.algorithm.support.MergeSort; ~v{C6)  
import org.rut.util.algorithm.support.QuickSort; ?qq!%4mTB  
import org.rut.util.algorithm.support.SelectionSort; gxBl1  
import org.rut.util.algorithm.support.ShellSort; o|b[(t$;O  
 "@UU[o  
/** (ffOu#RQ3  
* @author treeroot 9RCB$Ka6X  
* @since 2006-2-2 i'eYmm96Q  
* @version 1.0 . }-@;:yh  
*/ M]%!n3Fb  
public class SortUtil { PVQ#>_~5  
public final static int INSERT = 1; |j.KFu845  
public final static int BUBBLE = 2; 0+VncL)u  
public final static int SELECTION = 3; 1@1+4P0NF[  
public final static int SHELL = 4; U|y;b+n`  
public final static int QUICK = 5; 3:02`;3  
public final static int IMPROVED_QUICK = 6; 6T} CPDRq  
public final static int MERGE = 7; ;%b <uV  
public final static int IMPROVED_MERGE = 8; -.+KCt G$+  
public final static int HEAP = 9; Y]`lEq%  
N9>'/jgZX  
public static void sort(int[] data) { Jq$6$A,f  
sort(data, IMPROVED_QUICK); softfjl&l  
} '.}6]l  
private static String[] name={ @xW"rX#7f  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" {Q#Fen ;y|  
}; iuH8g  
qxg7cj2  
private static Sort[] impl=new Sort[]{ 7~%  
new InsertSort(), Uy_}@50"l  
new BubbleSort(), LB64W ;#h  
new SelectionSort(), W?4&lC^G  
new ShellSort(), V5(tf'  
new QuickSort(), 5~kW-x  
new ImprovedQuickSort(), cx1WGbZ  
new MergeSort(), jl 30\M7  
new ImprovedMergeSort(), sJjl)Qs)T  
new HeapSort() ECE{xoc  
}; mPw56>  
6qHvq A,  
public static String toString(int algorithm){ 8h@)9Q]d\  
return name[algorithm-1]; l/y Kc8^<  
} 4%#V^??E  
9$4/frd  
public static void sort(int[] data, int algorithm) { ;s!ns N  
impl[algorithm-1].sort(data); TGt1d  
} #:Sy`G6!?  
-G^t-I  
public static interface Sort { L(!!7B_,  
public void sort(int[] data); NdXy% Q  
} kp<}  
yEw"8u'  
public static void swap(int[] data, int i, int j) { Wj f>:\ w  
int temp = data; 4Q`=t &u  
data = data[j]; V.P5v {  
data[j] = temp; R>YMGUH~w  
} f@xfb ie !  
} JK^B+.  
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