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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。 J9+< 9g4-t  
插入排序: Tw^b!74gq  
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package org.rut.util.algorithm.support; 8_yhV{  
W dM?{; #  
import org.rut.util.algorithm.SortUtil; v(5zSo  
/** ^! ?wh  
* @author treeroot ma__LWKM,  
* @since 2006-2-2 b#XY.+ *0  
* @version 1.0 WX@ a2c.'  
*/ v?\Z4Z|f  
public class InsertSort implements SortUtil.Sort{ NJ 6* 7Cd  
6x?3%0Km  
/* (non-Javadoc) g<ZB9;FX %  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5,H,OZ}  
*/ HB+{vuN*L  
public void sort(int[] data) { WS17DsWW  
int temp; Y 6B7qp  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $^[^ ]Q  
} J0{;"  
} b/>L}/^PM  
} J['pBlEb\  
%d3KE|&u  
} )zU bMzF  
<d&9`e1Hc  
冒泡排序: E'_3U5U  
?<mxv"  
package org.rut.util.algorithm.support; }q-*Ls~  
V 4~`yT?*"  
import org.rut.util.algorithm.SortUtil; gaBVD*>  
=a!w)z_rw  
/** gK8E|f-z  
* @author treeroot S5a?KU  
* @since 2006-2-2 ?g7O([*[  
* @version 1.0 E@uxEF  
*/ 6S`J7[  
public class BubbleSort implements SortUtil.Sort{ ~hx__^]d  
Vifh`BSP  
/* (non-Javadoc) g!<=NVhYt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 25bLU?x5B  
*/ ZA1u  
public void sort(int[] data) { ()Cw;N{E  
int temp; <G+IbUG:  
for(int i=0;i for(int j=data.length-1;j>i;j--){ K<#Q;(SFU  
if(data[j] SortUtil.swap(data,j,j-1); `dp]N0nz  
} YwYCXFQ|  
} \%=GM J^[p  
} y5oC|v7  
} B<et&r;  
d :(&q  
} x'OYJ>l|  
eyUhM jd  
选择排序: P&3Z,f0  
T~&9/%$F  
package org.rut.util.algorithm.support; AEUXdMo  
OE{PP9 eh  
import org.rut.util.algorithm.SortUtil; Vdpvo;4uy  
`Z)]mH\X  
/** m+3U[KKvG  
* @author treeroot zQPQP`  
* @since 2006-2-2 Qj:`[#3?2  
* @version 1.0 5Xe1a'n5]  
*/ .|Ee,Un  
public class SelectionSort implements SortUtil.Sort { Y2Z<A(W  
Z+3j>_Ss  
/* ,)u7PMs  
* (non-Javadoc) ZKk*2EK]2z  
* ysHmi{V~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OVy ZyZ#  
*/ {y>o6OTITR  
public void sort(int[] data) { E:!qnc L:  
int temp; [*{G,=tF`Y  
for (int i = 0; i < data.length; i++) { zJxO\  
int lowIndex = i; &@&0n)VTd  
for (int j = data.length - 1; j > i; j--) { T^b62j'b5_  
if (data[j] < data[lowIndex]) { PF6w'T 5  
lowIndex = j; 7BNu.5*y  
} MPS{MGVjbJ  
} 3 $~6+i  
SortUtil.swap(data,i,lowIndex); C VyYV &U,  
} C;DR@'+q  
} s]lIDp}  
q3SYlL'a  
} 1G6 %?Iph  
Ok/U"N-  
Shell排序: M@ TXzn!&o  
et-<ib<lY  
package org.rut.util.algorithm.support; r=S6yq}  
_--kK+rU  
import org.rut.util.algorithm.SortUtil; &IZthJqV  
< .\2 Ec  
/** FxK2 1  
* @author treeroot S8S<>W  
* @since 2006-2-2  ,xhB  
* @version 1.0 zfexaf!  
*/ AhNy+p{  
public class ShellSort implements SortUtil.Sort{ M~o\K'  
'K8emt$d+  
/* (non-Javadoc) i!tF{'*%#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $h)VKW^\  
*/ I7Uj<a=(q  
public void sort(int[] data) { 2u=Nb0  
for(int i=data.length/2;i>2;i/=2){ z}gfH|  
for(int j=0;j insertSort(data,j,i); `3QAXDWE  
} (*XSr Q  
} #JLxM/5^1~  
insertSort(data,0,1); A/xo'G  
} <* 4'H  
|cBeyqr  
/** E\GD hfTQ  
* @param data 9^AfT>b~f  
* @param j eHt |O~  
* @param i --t5jSS44  
*/ .3Ag6YI0N  
private void insertSort(int[] data, int start, int inc) { ~?BN4ptc  
int temp; yn;sd+:z  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); c}l?x \/  
} doj$chy  
} W/?\8AE  
} %K$f2):  
Cnv M>]  
} @71n{9  
L{i,.aE/nO  
快速排序: [=otgVteN"  
*pOdM0AE  
package org.rut.util.algorithm.support; .=u8`,sO  
'u)zQAaw.  
import org.rut.util.algorithm.SortUtil; kpQXnDm 2  
7^3a296  
/** }ag -J."5M  
* @author treeroot <O]TM-h  
* @since 2006-2-2 QE b ^'y  
* @version 1.0 O0i)Iu(J7;  
*/ :RqTbE4B  
public class QuickSort implements SortUtil.Sort{ *It`<F|  
AlH\IP  
/* (non-Javadoc) u*:;O\6l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L6jD4ec8  
*/ n$}) }kj  
public void sort(int[] data) { tu%!j}3s  
quickSort(data,0,data.length-1); $ M8ZF(W  
} 8rXQK|A  
private void quickSort(int[] data,int i,int j){ @h91: hb  
int pivotIndex=(i+j)/2; u ]!ZW&  
file://swap yH:gFEJ:x  
SortUtil.swap(data,pivotIndex,j); QsN%a>t  
ov@N13 ,$  
int k=partition(data,i-1,j,data[j]); Sj`GP p  
SortUtil.swap(data,k,j); ;n"Nv }<C  
if((k-i)>1) quickSort(data,i,k-1); $7~T+fmF  
if((j-k)>1) quickSort(data,k+1,j); ! ,*4d $  
2/coa+Qkv]  
} (n>gC  
/** F6vN{ FI  
* @param data #*"5F*  
* @param i z;F6:aBa  
* @param j 8=!BtMd"  
* @return lJR  
*/ T`?{Is['(  
private int partition(int[] data, int l, int r,int pivot) { V7pe|]%r  
do{ ZtFOIb*  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ,{tK{XpS  
SortUtil.swap(data,l,r); `RriVYc<  
} |hlc#t ?  
while(l SortUtil.swap(data,l,r); <691pk X  
return l; (C=.&',P  
} /Mg$t6vM  
h\@\*Xz<v  
} /%P|<[< [  
Z%t"~r0PS  
改进后的快速排序: D^Cpgha  
e=yQFzQT)  
package org.rut.util.algorithm.support; ?f{--|V  
&/}reE*  
import org.rut.util.algorithm.SortUtil; p}r1@L s  
+wwb+aG6{  
/** 2y t)"DnFk  
* @author treeroot 0j-- X?-  
* @since 2006-2-2 ^@"EI|fsP  
* @version 1.0 x?*)  
*/ *nj={Ss&  
public class ImprovedQuickSort implements SortUtil.Sort { VPAi[<FzOG  
z3\WcW7|  
private static int MAX_STACK_SIZE=4096; <x^Ab#K"  
private static int THRESHOLD=10; RF,[1O-\O  
/* (non-Javadoc) Vh1R!>XY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bIR&e E  
*/ 04u^Q  
public void sort(int[] data) { Yr\pgK,  
int[] stack=new int[MAX_STACK_SIZE]; 7 B<  
:7&-<ae2  
int top=-1; f7mN,_Lt  
int pivot; +Ui @3Q  
int pivotIndex,l,r; fC\Cx;q-  
zK5/0zMZ  
stack[++top]=0; ZYi."^l  
stack[++top]=data.length-1; +;ILj<!Z7  
C1V@\mRi  
while(top>0){ _(R1En1  
int j=stack[top--]; a(qij&>  
int i=stack[top--]; ;nDCyn4i]  
de&*#O5  
pivotIndex=(i+j)/2; L7}dvdtZ0  
pivot=data[pivotIndex]; f <,E  
'DDlX3W-  
SortUtil.swap(data,pivotIndex,j); Tgf#I*(^]  
 dkr[B' n  
file://partition FM80F_G^z  
l=i-1; )$.::[pNA  
r=j; .d4L@{V  
do{ TH%J=1d  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 42Qfv%*c  
SortUtil.swap(data,l,r); - s}  
} wd 4]Z0;  
while(l SortUtil.swap(data,l,r); s\CZ os&  
SortUtil.swap(data,l,j); /p&V72  
Q^|ZoJS  
if((l-i)>THRESHOLD){ mHiV};$  
stack[++top]=i; S1!X;PP/  
stack[++top]=l-1; H;eGBVi  
} ,k,RXgQ  
if((j-l)>THRESHOLD){ e?V7<7$  
stack[++top]=l+1; TVVr<r  
stack[++top]=j; \E!a=cL!  
} #jc+2F,+{  
4=Wtv/ 3  
} =`1#fQDt  
file://new InsertSort().sort(data); KliMw*5(  
insertSort(data); "IjCuR;#  
} +J`HI1  
/** h^)R}jy+f  
* @param data FS(bEAk}  
*/ hhqSfafUX  
private void insertSort(int[] data) { gq'}LcV  
int temp; f4h|Nn%;  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2NNAsr}L  
} hJ>Kfm  
} w,,QXJe{Z_  
} N 9.$--X}D  
vq.~8c1  
} Hju7gP=y}  
lU}y%J@  
归并排序: U@6bH@v5  
Ji#"PE/Pt  
package org.rut.util.algorithm.support; 5Dhpcgq<<  
{D6E@a  
import org.rut.util.algorithm.SortUtil; >\/H2j  
s%{8$> 8V.  
/** MKnG:)T<?l  
* @author treeroot O]XdPH20  
* @since 2006-2-2 ek^=Z`  
* @version 1.0 sp2"c"_+  
*/ G<5i %@  
public class MergeSort implements SortUtil.Sort{ :skNEY].  
e13{G @  
/* (non-Javadoc) Zgw;AY.R>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /9K,W)h_  
*/ AB.gVw| 4  
public void sort(int[] data) { TSl:a &  
int[] temp=new int[data.length]; L,m'/}$  
mergeSort(data,temp,0,data.length-1); Y/3CB  
} \BoRYb9h  
M<AjtDF%  
private void mergeSort(int[] data,int[] temp,int l,int r){ A<1:vV  
int mid=(l+r)/2; [32]wgw+{1  
if(l==r) return ; aZk/\&=6  
mergeSort(data,temp,l,mid); &pL.hM^  
mergeSort(data,temp,mid+1,r); :75$e%'A  
for(int i=l;i<=r;i++){ cJ}J4?  
temp=data; -=tf)  
} o!\Q,  
int i1=l; ')bas#=uP  
int i2=mid+1; 'V*ixK8R0  
for(int cur=l;cur<=r;cur++){ ="k9 y  
if(i1==mid+1) xD:t$~  
data[cur]=temp[i2++]; TjU g8k  
else if(i2>r) )@IDmz>  
data[cur]=temp[i1++]; @y|ZXPC#  
else if(temp[i1] data[cur]=temp[i1++]; X\z `S##kj  
else AM[#AZv  
data[cur]=temp[i2++]; MR) *Xh  
} JTw< 4]  
} vM.Y/,7S  
\1[=t+/  
} i42M.M6D$  
@1`!}.Tk  
改进后的归并排序: o~aK[   
3?R56$-+  
package org.rut.util.algorithm.support; z]^u@]@NC  
< wI z8V  
import org.rut.util.algorithm.SortUtil; x)wlp{rLf  
5-=&4R\k  
/** y@T 0 jI  
* @author treeroot ut<0-  
* @since 2006-2-2 p)dD{+"/2  
* @version 1.0 3@t&5UjwQ  
*/ /M0A9ZT[  
public class ImprovedMergeSort implements SortUtil.Sort { \!+#9sq0  
![>j`i  
private static final int THRESHOLD = 10; $$,/F  
CTNeh%K;  
/* dGNg[  
* (non-Javadoc) 2"'<Yk9  
* E1=WH-iA0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <]SI -  
*/ BA5b;+o-  
public void sort(int[] data) { ZFJ qI  
int[] temp=new int[data.length]; o'Uaz*-po  
mergeSort(data,temp,0,data.length-1); _3;vir%)  
} 3pV^Oe^9  
o_(@v2G`  
private void mergeSort(int[] data, int[] temp, int l, int r) { {\SJr:  
int i, j, k; d,hKy2  
int mid = (l + r) / 2; Hv>16W$_  
if (l == r) prdlV)LTpY  
return; ' )0eB:  
if ((mid - l) >= THRESHOLD) F*0rpQ,*  
mergeSort(data, temp, l, mid); 7,.3'cCL^  
else @`IMR$'  
insertSort(data, l, mid - l + 1); ib-)T7V`  
if ((r - mid) > THRESHOLD)  .# Jusd  
mergeSort(data, temp, mid + 1, r); 5>S<9A|Q  
else aw3 oG?3I  
insertSort(data, mid + 1, r - mid); ,>AA2@6zMT  
GY%2EM(  
for (i = l; i <= mid; i++) { 9On0om>  
temp = data; _#SCjFz  
} (]Pr[xB  
for (j = 1; j <= r - mid; j++) { ++m^z` D  
temp[r - j + 1] = data[j + mid]; lCX*Q{s22  
} )zKZ<;#y  
int a = temp[l]; 4P>4d +  
int b = temp[r]; Dh4 EP/=z  
for (i = l, j = r, k = l; k <= r; k++) { 'X$J+s}6&  
if (a < b) { si!jB%^  
data[k] = temp[i++]; Qw,{"J  
a = temp; mZ[tB/  
} else { S5,y!K]C~  
data[k] = temp[j--]; %VSjMZ  
b = temp[j]; ~+HZQv3Y  
} 5C G ,l  
} ~vL`[JiK  
} O1 KT  
Z ZMz0^V  
/** I?z*.yA*  
* @param data GY3g`M   
* @param l KysJ3G.k\  
* @param i )J"*[[e  
*/ >$g+Gx\v4  
private void insertSort(int[] data, int start, int len) { |)4aIa  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); RyN}Gz/YN  
} FUD M]:XQ  
} vhEXtjL  
} Mq#sSBE<K  
} z0v|%&IK  
_[kZ:#  
堆排序: CZ~%qPwDw  
$3BH82  
package org.rut.util.algorithm.support; p bT sn  
?kF_C,k/>N  
import org.rut.util.algorithm.SortUtil; m,qMRcDF  
0&W*U{0F\  
/** e*Y>+*2y  
* @author treeroot )M: pg%  
* @since 2006-2-2 zDD1EycH  
* @version 1.0 F.DR Gi.i  
*/ (c'kZ9&  
public class HeapSort implements SortUtil.Sort{ T``O!>J  
v=Y) A?  
/* (non-Javadoc) 5>nb A8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'A#bBn,|  
*/ jkrv2 `"  
public void sort(int[] data) { jx?"m=`s:  
MaxHeap h=new MaxHeap(); ?S~@Ea8/M  
h.init(data); "L)=Y7Dx  
for(int i=0;i h.remove(); kuZs30^  
System.arraycopy(h.queue,1,data,0,data.length); q ?qpUPzD  
} ,5 A&  
i+Fk  
private static class MaxHeap{ h%0FKi^  
,iy;L_N  
void init(int[] data){ Z'V"nhL  
this.queue=new int[data.length+1]; rmq^P;At  
for(int i=0;i queue[++size]=data; ]rY3bG'&  
fixUp(size); zfBaB0P  
} `Cv@16  
} "(QI7:iM  
tnn,lWu|  
private int size=0;  z^YL$  
,xzSFs>2  
private int[] queue; @Q%g#N  
8#_"WzDw  
public int get() { A $GiO  
return queue[1]; -:jC.} Y  
} 8K;wX%_,  
)Z.M(P  
public void remove() { g:&V9~FR  
SortUtil.swap(queue,1,size--); Cr;d !=  
fixDown(1); 8A,="YIt  
} x$WdW+glZ-  
file://fixdown l`' lqnhv  
private void fixDown(int k) { /iwL$xQQ  
int j; MB#KLTwnT  
while ((j = k << 1) <= size) { A:JW Ux  
if (j < size %26amp;%26amp; queue[j] j++; % njcWVP;  
if (queue[k]>queue[j]) file://不用交换 'C")X  
break; n?EL\B   
SortUtil.swap(queue,j,k); @XSxoUF\  
k = j; ]ICBNJ  
} 4hLv"R.  
} /qeSR3WC  
private void fixUp(int k) { c8=@ s#  
while (k > 1) { =I6u*$9<  
int j = k >> 1; ywl7bU-f  
if (queue[j]>queue[k]) M9J^;3Lrh  
break; >.}ewz&9o  
SortUtil.swap(queue,j,k); AY~~a)V  
k = j; $(PWN6{\r^  
} zB@@Gs>  
} OpT0V]k^"9  
XY*KWO  
} Ze:Y"49S+>  
'aAay*1  
} rf:C B&u  
]di9dLT  
SortUtil: EvJ"%:bp  
xy.di9  
package org.rut.util.algorithm; ,TdL-a5  
1$^=M[v  
import org.rut.util.algorithm.support.BubbleSort; puPYM"  
import org.rut.util.algorithm.support.HeapSort; ==W`qC4n?n  
import org.rut.util.algorithm.support.ImprovedMergeSort; tG"lI/  
import org.rut.util.algorithm.support.ImprovedQuickSort; 50Kv4a"  
import org.rut.util.algorithm.support.InsertSort; lDd8dT-Q.  
import org.rut.util.algorithm.support.MergeSort; 1r-#QuV#  
import org.rut.util.algorithm.support.QuickSort; rQ!X  
import org.rut.util.algorithm.support.SelectionSort; p#T^o]+  
import org.rut.util.algorithm.support.ShellSort; "v9i;Ba>+  
YJ[Jo3M@j0  
/** c~=yD:$  
* @author treeroot 7lJs{$ P  
* @since 2006-2-2 R8K ?! Z  
* @version 1.0 ~H+W[r}  
*/ R2%>y5dD  
public class SortUtil { G"'[dL)N>  
public final static int INSERT = 1; *\5o0~~8J  
public final static int BUBBLE = 2; s/=.a2\  
public final static int SELECTION = 3; ^HM9'*&KJ  
public final static int SHELL = 4; B<A=U r  
public final static int QUICK = 5; ~5xs$ub  
public final static int IMPROVED_QUICK = 6; |x ~<Dc>0*  
public final static int MERGE = 7; i( l'f#  
public final static int IMPROVED_MERGE = 8; RgQ;fYS  
public final static int HEAP = 9; x(UOt;  
J91O$szA  
public static void sort(int[] data) { M^$liS.D  
sort(data, IMPROVED_QUICK); lbg^ 2|o~~  
} V.8pxD5 s  
private static String[] name={ mn;Wqb/  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" &\_cU?0d  
}; ?7:?OX  
8pQ:B/3=  
private static Sort[] impl=new Sort[]{ #!n"),3  
new InsertSort(), +mqz)-x  
new BubbleSort(), ^^{gn3xJ  
new SelectionSort(), ,svj(HP$  
new ShellSort(),  K#LG7faj  
new QuickSort(), RlH~<|XK  
new ImprovedQuickSort(), XJ.ERLR.  
new MergeSort(), .bT|:Q~@{  
new ImprovedMergeSort(), \XUG-\$p  
new HeapSort() =%Yw;% 0)Y  
}; YhzDi>hob  
w=txSF&Qr  
public static String toString(int algorithm){ IRxFcLk  
return name[algorithm-1]; 1Z+\>~8  
} =rrbS8To=  
fcC?1M[BP~  
public static void sort(int[] data, int algorithm) { >[U.P)7;  
impl[algorithm-1].sort(data); *k7vm%#ns  
} ;J)8#|  
7rdPA9  
public static interface Sort { pJK}9p=4`  
public void sort(int[] data); |4XR [eX  
} /h!Y/\kI  
"V:24\vO  
public static void swap(int[] data, int i, int j) { )7j CEA03  
int temp = data; M-B-  
data = data[j]; Yiq8 >|  
data[j] = temp; s=uWBh3J  
} h{sY5d'D  
} .L X8ko  
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