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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。 jHCKV  
插入排序: /(aX>_7jg  
=*Xf(mhc  
package org.rut.util.algorithm.support; KF)i66  
h'p0V@!N  
import org.rut.util.algorithm.SortUtil; (T01hR&  
/** { )qP34rM  
* @author treeroot W\7*T1TDj  
* @since 2006-2-2 : 4WbDeR  
* @version 1.0 k Dt)S$N4n  
*/ iurB8~Y  
public class InsertSort implements SortUtil.Sort{ ]w>fnew  
h6i{5\7.  
/* (non-Javadoc) w ZAXfNA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =1 \wZuK#  
*/ x["  
public void sort(int[] data) { GcW}<g}  
int temp; a7G2C oM8  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8zWPb  
} d Al<'~g  
} Pltju4.:C  
} RfG$Px '  
GN c|)$  
} ]H~,K]@.  
FaE orQ  
冒泡排序: q&T'x> /  
T(^8ki  
package org.rut.util.algorithm.support; t}*!UixE  
|LE++t*X~  
import org.rut.util.algorithm.SortUtil; 1C=P#MU`  
v^fOT5\  
/** M) XQi/  
* @author treeroot @!3^/D3  
* @since 2006-2-2 , vyx`wDd  
* @version 1.0 F5P{+z7  
*/ 5O ;^Mk|  
public class BubbleSort implements SortUtil.Sort{ #`0z=w/)  
s,H(m8#>  
/* (non-Javadoc) ItE~MJ5p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B Rj KV  
*/ Vj`s_IPY  
public void sort(int[] data) { B-'BJ|*4I  
int temp; E=lfg8yb:  
for(int i=0;i for(int j=data.length-1;j>i;j--){ .BDRD~kB  
if(data[j] SortUtil.swap(data,j,j-1); J&65B./mD9  
} _J~ta.  
} <SdJM1%Qo  
} p+UHJ&  
} FKnQwX.0  
T ) f_W  
} SliQwm5  
Z;SG<  
选择排序: ^i)Q CDU7  
*N e2l`!1m  
package org.rut.util.algorithm.support; yPG\ &Bo  
?V:]u 3  
import org.rut.util.algorithm.SortUtil; hs_|nr0;[  
N<"6=z@w+  
/** ZfCr"aL  
* @author treeroot X3L[y\  
* @since 2006-2-2 4m[C-NB!g  
* @version 1.0 ^I~T$YjC '  
*/ _QUu'zJ  
public class SelectionSort implements SortUtil.Sort { \ +-hn  
-L3 |9k  
/* jsi#l  
* (non-Javadoc) ^'53]b:  
* xc<eU`-' b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EJ;0ypbG  
*/ '7LJuMp$#  
public void sort(int[] data) { FoD/Q  
int temp; 5QFXj)hR+4  
for (int i = 0; i < data.length; i++) { LO}:Ub  
int lowIndex = i; +IO1ipc4cE  
for (int j = data.length - 1; j > i; j--) { uC*:#[  
if (data[j] < data[lowIndex]) { ji)4WG/1  
lowIndex = j; c]!D`FA*K  
} ivUsMhx>S,  
} -,fa{yt-  
SortUtil.swap(data,i,lowIndex); dIfs 8%kl  
} )C01f ZhD  
} CBnouKc:  
U>_\  
} :UDn^ (#  
s@)"IdSA(  
Shell排序: <,4R2'  
&Wz`>qYL*  
package org.rut.util.algorithm.support; &c<}++'h  
9<(K6Q  
import org.rut.util.algorithm.SortUtil; ZH$sMh<xg  
c<h!QnJ  
/** ic0v*Y$  
* @author treeroot F2PLy q  
* @since 2006-2-2 sAD P~xvU  
* @version 1.0 o&XMgY~  
*/ _]D#)-uv}C  
public class ShellSort implements SortUtil.Sort{ C=dx4U~   
F@K*T2uh  
/* (non-Javadoc) yhtvr5z1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @X|i@{<';  
*/ h\u0{!@}  
public void sort(int[] data) { ULNAH`{D  
for(int i=data.length/2;i>2;i/=2){ n:bB$Ai2  
for(int j=0;j insertSort(data,j,i); ^`jZKh8)h  
} 8pq-nuf|K  
} $nfBv f  
insertSort(data,0,1); wSJ]3gJM`  
} # +QWi0B  
>: W-C{%  
/** CmJ?_>  
* @param data HL(U~Q6JQ  
* @param j x'M^4{4[  
* @param i AJ#m6`M+EK  
*/ /J[H5uA  
private void insertSort(int[] data, int start, int inc) { Tn@UX(^,  
int temp; KCJN<  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); O+E1M=R6h  
} o/dMm:TF  
} %CxEZPe$  
} 2GiUPtO&Gj  
kh<pLI>$h  
} >St. &#c  
h5&/hBN  
快速排序: WG8iTVwx  
OBI+<2`Oc  
package org.rut.util.algorithm.support; @3 -,=x  
dcl.wD0~V  
import org.rut.util.algorithm.SortUtil; 'n l RY5@2  
(@KoqwVWc  
/** %Le:wC  
* @author treeroot _}I(U?Q-C  
* @since 2006-2-2 (Pk"NEP   
* @version 1.0 S(>@:`=  
*/ ] Wx>)LT  
public class QuickSort implements SortUtil.Sort{ "w*+v  
" K 8&{=  
/* (non-Javadoc) *%T)\\H2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4?>18%7&  
*/ @,x_i8  
public void sort(int[] data) { 4pmTicA~  
quickSort(data,0,data.length-1); ;m@1Ec@* p  
} J+)'-OFt0  
private void quickSort(int[] data,int i,int j){ :W.jNV{e\F  
int pivotIndex=(i+j)/2; NI5]Nz<?  
file://swap ;dqk@@O"(  
SortUtil.swap(data,pivotIndex,j); w~kHQ%A  
yaH Trh%  
int k=partition(data,i-1,j,data[j]); a -xW8  
SortUtil.swap(data,k,j); ]Q6+e(:~ZH  
if((k-i)>1) quickSort(data,i,k-1); lQV|U;~D  
if((j-k)>1) quickSort(data,k+1,j); w`c0a&7  
] vC=.&]  
} le7 `uz!%  
/** _\ .  
* @param data R* s* +I  
* @param i Q7,EY /  
* @param j pOqGAD{D$  
* @return u.Mqj"o\  
*/ uy/y wm/?=  
private int partition(int[] data, int l, int r,int pivot) { ss? ]  
do{ JN9^fR09G  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); #*!+b  
SortUtil.swap(data,l,r); `IEq@Wr#$!  
} kWB, ;7  
while(l SortUtil.swap(data,l,r); %mY|  
return l; `1nRcY  
} NTqo`VWe  
a @6^8B?w;  
} oi7 3YOB  
'oleB_B  
改进后的快速排序: ?VFM ]hO  
wA?@v|,dZ  
package org.rut.util.algorithm.support; -#hK|1]  
?n!lUr$:y  
import org.rut.util.algorithm.SortUtil; ]]>nbgGn#  
vG Y!4@[  
/** :/+>e IE  
* @author treeroot Xo2^N2I  
* @since 2006-2-2 A#<vG1  
* @version 1.0 Tdg6kkJ  
*/ $fj])>=H  
public class ImprovedQuickSort implements SortUtil.Sort { wD`[5~C{  
fD'/#sA#'  
private static int MAX_STACK_SIZE=4096; )))2f skZ  
private static int THRESHOLD=10; lp(Nv(S  
/* (non-Javadoc)  AlO,o[0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3 h#s([uL  
*/ '<TD6jBs  
public void sort(int[] data) { [M4xZHd#o  
int[] stack=new int[MAX_STACK_SIZE]; brntE:  
+Y7Pg'35  
int top=-1; P*0f~eu  
int pivot; QV0M/k<'  
int pivotIndex,l,r; ~L~]QN\3  
XJUEwX  
stack[++top]=0; ] GNh)  
stack[++top]=data.length-1; ?FN9rhAC  
8/Mx5~ R  
while(top>0){ @: Z#E[N H  
int j=stack[top--]; kfXS_\@iW1  
int i=stack[top--]; >rKhlUD  
D3y>iQd   
pivotIndex=(i+j)/2; X<Z(]`i  
pivot=data[pivotIndex]; (v!mR+\x  
QP:9%f>=  
SortUtil.swap(data,pivotIndex,j); D i+4Eb  
GMBJjP&R]  
file://partition glx2I_y  
l=i-1; 6+iK!&+=  
r=j; B%fU'  
do{ L?HF'5o  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); c}%es=@  
SortUtil.swap(data,l,r); 7aQ n;  
} G]-%AO{K  
while(l SortUtil.swap(data,l,r); N`HSE=u>  
SortUtil.swap(data,l,j); };rm3;~ eg  
S;8.yj-  
if((l-i)>THRESHOLD){ 7H%_sw5S.  
stack[++top]=i; ^7Lk-a7gp  
stack[++top]=l-1; @ u+|=x];  
} EL7T'zJ$  
if((j-l)>THRESHOLD){ OF8WDo`  
stack[++top]=l+1; !R74J=#(  
stack[++top]=j; dKm`14f]@G  
} <1 S+ '  
KaW~ERx5  
} %K?iNe  
file://new InsertSort().sort(data); p.C1nh  
insertSort(data); jn$j^ 51`C  
} lUHtjr  
/** "U{,U`@?  
* @param data f>niFPW"  
*/ |'<vrn  
private void insertSort(int[] data) { \i0-o8q@I  
int temp; nhewDDu  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Sph*1c(R  
} WYLX?x  
} >jMH#TZaX  
} o8{<qn|  
/lJjQ]c;>  
} g/#~N~&  
%K zbO0  
归并排序: q 5p e~  
3]^'  
package org.rut.util.algorithm.support; E eB3 }  
-NzTqLBn  
import org.rut.util.algorithm.SortUtil; Pbe7SRdr^  
bMmra.x4L  
/** JNBT^=x  
* @author treeroot B+46.bIH  
* @since 2006-2-2 fhRjYYGI  
* @version 1.0 + |C=ZU  
*/ FJwt?3\u5  
public class MergeSort implements SortUtil.Sort{ o/1JO_41  
X *O9JGh  
/* (non-Javadoc) !M(:U,?B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -:S IS`0s  
*/ Hf%_}Du /`  
public void sort(int[] data) { azX`oU,l  
int[] temp=new int[data.length]; :l"dYfl  
mergeSort(data,temp,0,data.length-1); g 1@wf  
} oZ:{@ =  
GNU;jSh5  
private void mergeSort(int[] data,int[] temp,int l,int r){ /^2CGcT(  
int mid=(l+r)/2; m*oc)x7'  
if(l==r) return ; T3z(k la  
mergeSort(data,temp,l,mid); Yy h=G  
mergeSort(data,temp,mid+1,r); ? )_7U  
for(int i=l;i<=r;i++){ ~`R1sSr"  
temp=data; d>!p=O`>{q  
} yX! #a>d"H  
int i1=l; Qra>}e%*  
int i2=mid+1; kcS6_l  
for(int cur=l;cur<=r;cur++){ f#P_xn&et  
if(i1==mid+1) U$'y_}V  
data[cur]=temp[i2++]; }V]eg,.BJ  
else if(i2>r) l^r' $;<m  
data[cur]=temp[i1++]; IN^_BKQt  
else if(temp[i1] data[cur]=temp[i1++]; +(mL~td01  
else |C D}<r(N  
data[cur]=temp[i2++]; % {Q-8w!  
} K@r*;T  
} JJ5C}`(  
2-v\3voN  
} cNj*E =~;  
kon=il<@  
改进后的归并排序: ;+`uER  
~lw<799F6  
package org.rut.util.algorithm.support; lLCdmxbT  
2OalAY6RS  
import org.rut.util.algorithm.SortUtil; &+r 4  
]a/'6GbR  
/** >}SRSqJu  
* @author treeroot I KcKRw/O$  
* @since 2006-2-2 (F8AL6  
* @version 1.0 Ro r2qDF  
*/ mP-2s;q  
public class ImprovedMergeSort implements SortUtil.Sort { %;O}FyP  
de YyaV  
private static final int THRESHOLD = 10; H06Bj(Y!  
A}G|Yfn  
/* AyTx'u  
* (non-Javadoc) jTSOnF}C~+  
* SLoo:)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qI2'u%  
*/ 6fwY$K\X  
public void sort(int[] data) { O3%[dR  
int[] temp=new int[data.length]; Np)aS[9W  
mergeSort(data,temp,0,data.length-1); I]uhi{\C  
} i&Kz*,pt  
(ZPXdr  
private void mergeSort(int[] data, int[] temp, int l, int r) { <k]qH-v4  
int i, j, k; 7GZq|M_:y  
int mid = (l + r) / 2; ;V.vfar  
if (l == r) U:lv^ QPG  
return; 5 09Q0 [k  
if ((mid - l) >= THRESHOLD) ;NsO  
mergeSort(data, temp, l, mid); k dU! kj  
else C6@t  
insertSort(data, l, mid - l + 1); ,{{SI  
if ((r - mid) > THRESHOLD) XDLEVSly7  
mergeSort(data, temp, mid + 1, r); TzM=LvA  
else ?~F. /  
insertSort(data, mid + 1, r - mid); )U(u>SV(\  
T;?+kC3  
for (i = l; i <= mid; i++) { N z~" vi(t  
temp = data; n33kb/q*  
} G) 7)]yBL  
for (j = 1; j <= r - mid; j++) { D1X{:#|  
temp[r - j + 1] = data[j + mid]; @ajM^L!O  
} t26ij`V  
int a = temp[l]; 0Nr\2|  
int b = temp[r]; *fhX*e8y  
for (i = l, j = r, k = l; k <= r; k++) { I@./${o  
if (a < b) { OFy,B-`A{  
data[k] = temp[i++]; =nhzMU9c\y  
a = temp; NWKi ()nA%  
} else { {ZqQ!!b  
data[k] = temp[j--]; pm]fQ uq  
b = temp[j]; lbkL yp2  
} ^ d\SPZ  
} xzk}[3P{  
} Qpu3(`d<  
JR1 *|u  
/** -JTG?JOd]  
* @param data PDC]wZd/  
* @param l 7rIlTrG  
* @param i 7~vqf3ON4J  
*/ > saI+u'o  
private void insertSort(int[] data, int start, int len) { pFIecca w  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); #nEL~&  
} )zJ=PF  
} .#!mDlY;  
} ~B_ D@gV|  
} RvW.@#EH0  
_4R,Ej}  
堆排序: yNva1I  
Kbas-</Si  
package org.rut.util.algorithm.support; h5-d;RKE  
o#e7,O  
import org.rut.util.algorithm.SortUtil; treXOC9^B8  
rJ(OAKnY  
/** OCW+?B;  
* @author treeroot O5-;I,)H  
* @since 2006-2-2 yWHne~!  
* @version 1.0 2Xgx*'t\  
*/ tpU D0Z)  
public class HeapSort implements SortUtil.Sort{ jG8;]XP  
]u=Ca#!'  
/* (non-Javadoc) {!=2<-Aq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hsl{rN  
*/ E@pFTvo  
public void sort(int[] data) { CG9ba |  
MaxHeap h=new MaxHeap(); h{/ve`F>@  
h.init(data); W)-hU~^OM  
for(int i=0;i h.remove(); P<L&c_u  
System.arraycopy(h.queue,1,data,0,data.length); bp%S62Dj  
} H[BYE  
1Z:R,\+L  
private static class MaxHeap{ qGa<@ b  
J3&Sj{ o  
void init(int[] data){ |nm2Uy/0  
this.queue=new int[data.length+1]; ifrq  
for(int i=0;i queue[++size]=data; (1 yGg==W.  
fixUp(size); rfTe  
} ^zeL+(@r/  
} g7Z9F[d  
$8@+j[>  
private int size=0; .e$%[ )D  
o7 arxo\  
private int[] queue; w `!LFHK  
;eh/_hPM  
public int get() { } J(1V!EA  
return queue[1]; (}0S1)7t  
} 6Ahr_{  
YFqZe6g0$  
public void remove() { Ilef+V^qr  
SortUtil.swap(queue,1,size--); bK7.St  
fixDown(1); %M6 c0d[9-  
} ^j iE9k)  
file://fixdown ^4UcTjh  
private void fixDown(int k) { 6eo4#/+%  
int j; /.v_N%*-v  
while ((j = k << 1) <= size) { m&cvU>lC  
if (j < size %26amp;%26amp; queue[j] j++; 4k$0CbHx0  
if (queue[k]>queue[j]) file://不用交换 H;wR  
break; )JX$/- RD-  
SortUtil.swap(queue,j,k); +"Ub/[J{G1  
k = j; 9A<0zt  
} xp=Zd\5W$  
} 6KB^w0oA  
private void fixUp(int k) { mQ=sNZ-d]  
while (k > 1) { u GIr&`S  
int j = k >> 1; Y"oDFo,  
if (queue[j]>queue[k]) B~rU1Y)  
break; f?5A"-NS  
SortUtil.swap(queue,j,k); E [*0Bo]  
k = j; U1kh-8  :  
} 19&)Yd1  
} }Az'Zu4 =  
p2^)2v  
} 9.]kOs_  
OF-WUa4t  
}  `~h0?g  
Tplg2p% k  
SortUtil: ]7l{g9?ZtV  
[x|)}P7%s  
package org.rut.util.algorithm; sy=dY@W^  
lfRH`u  
import org.rut.util.algorithm.support.BubbleSort; ?#i|>MRR>  
import org.rut.util.algorithm.support.HeapSort; ExqM1&zpK  
import org.rut.util.algorithm.support.ImprovedMergeSort; j^{b^!4~}  
import org.rut.util.algorithm.support.ImprovedQuickSort; =t HD 4I  
import org.rut.util.algorithm.support.InsertSort; LGXZx}4@;  
import org.rut.util.algorithm.support.MergeSort; c`pYc  
import org.rut.util.algorithm.support.QuickSort; :-U53}Iy  
import org.rut.util.algorithm.support.SelectionSort; :^5>wDu{  
import org.rut.util.algorithm.support.ShellSort; -zR.'x%  
$-e=tWkgv  
/** S NN#$8\  
* @author treeroot {F/q{c~]  
* @since 2006-2-2 &AJUY()8  
* @version 1.0 :k\} I k  
*/ f:&)"  
public class SortUtil { Wy!uRzbBv  
public final static int INSERT = 1; 0yKh p: ^  
public final static int BUBBLE = 2; @H6%G>K,  
public final static int SELECTION = 3; !L/tLHk+  
public final static int SHELL = 4; T"IW Jpc  
public final static int QUICK = 5; c|+y9(0|y  
public final static int IMPROVED_QUICK = 6; b70AJe=  
public final static int MERGE = 7; Pm~,Ky&Hl  
public final static int IMPROVED_MERGE = 8; q{[1fE"[K4  
public final static int HEAP = 9; ^SgN(-QH  
ps "9;4P  
public static void sort(int[] data) { yZ?$8r  
sort(data, IMPROVED_QUICK); 2G H)iUmc  
} aw]8V:)$J  
private static String[] name={ qR_SQ VN  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 3eJ\aVI>pE  
}; =I7[L{+~Y  
/8:gVXZi  
private static Sort[] impl=new Sort[]{ \_?yzgf  
new InsertSort(), p?}&)Un  
new BubbleSort(), b#e]1Q  
new SelectionSort(), p0   
new ShellSort(), UC.8DaIPN  
new QuickSort(), w~ijD ^ g  
new ImprovedQuickSort(), x4@MO|C  
new MergeSort(), z_'dRw  
new ImprovedMergeSort(), f]hBPkZ6  
new HeapSort() Sio1Q0  
}; gNG.l  
\ =S3 L<  
public static String toString(int algorithm){ U-ERhm>uk  
return name[algorithm-1]; Ca$y819E2  
} .[#xQ=9`  
`Yg7,{A\J  
public static void sort(int[] data, int algorithm) { \m@] G3=]  
impl[algorithm-1].sort(data); .V7Y2!4TE  
} $# D n4  
dvC0 <*V  
public static interface Sort { |{zHM23gD  
public void sort(int[] data); KsZ@kTs  
} X >3iYDe  
| pF5`dX  
public static void swap(int[] data, int i, int j) { !Jk(&.  
int temp = data; i-|/2I9%  
data = data[j]; E {I)LdAqK  
data[j] = temp; }_Tt1iai*  
} ^- u[q- !  
} USlF+RY@3L  
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