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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。 YIw1  
插入排序: kuyjnSo9i  
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package org.rut.util.algorithm.support; 1-lu\"H`  
nRyU]=-X  
import org.rut.util.algorithm.SortUtil; n]E?3UGD@W  
/** Cj~'Lhmv'T  
* @author treeroot 2hzsKkrA {  
* @since 2006-2-2 {~Rk2:gx  
* @version 1.0 aDO !  
*/ y=?)n\ f  
public class InsertSort implements SortUtil.Sort{ ;>n,:355L  
AGLscf.  
/* (non-Javadoc) % qV 6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M#(+c_(r  
*/ *G* k6.9W!  
public void sort(int[] data) { !1e6Ss  
int temp; d3=KTTi\  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); sI{ M  
} 0 $,SF3K  
} ZK>WW  
} 5[c^TJ3  
feQ **wI  
} +v=C@2T  
.l.a(_R  
冒泡排序: X5 j1`t,  
Djg,Lvhm  
package org.rut.util.algorithm.support; Na:w]r:y  
,7<f9 EVY  
import org.rut.util.algorithm.SortUtil; "'D=,*  
+HBd %1  
/** 8F'x=lIO  
* @author treeroot '&\kxNglJ  
* @since 2006-2-2 \[y`'OD~  
* @version 1.0 PYGRsrcFd#  
*/ )jt #=9ZQ  
public class BubbleSort implements SortUtil.Sort{ A!h`]%0B  
D8$G`~hD  
/* (non-Javadoc) @nux9MX<9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v%q0OX>9X"  
*/ <yd{tD$A*  
public void sort(int[] data) { 3\XU_Xs(]  
int temp; Za 1QC;7  
for(int i=0;i for(int j=data.length-1;j>i;j--){ K*~0"F>"0  
if(data[j] SortUtil.swap(data,j,j-1); cXKjrL[b  
} p,eTY[k?  
} Ft&]7dT{W  
} `\}v#2VJ  
} lhqg$lb  
;C2K~8,  
} U|IzXQX(  
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选择排序: "g1)f"pL  
k7T`bYv  
package org.rut.util.algorithm.support; neLAEHV  
>U[j]V]  
import org.rut.util.algorithm.SortUtil; %^ !,t:d  
JU)dr4S?  
/** v_DedVhe  
* @author treeroot 5yP\I+Fm  
* @since 2006-2-2 )v.=jup[  
* @version 1.0 MB]<Dyj,  
*/ 8|\8O@  
public class SelectionSort implements SortUtil.Sort { a6uJYhS~  
|>dI/_'  
/* =w{Z@S(ukz  
* (non-Javadoc) vkri+:S3  
* Zcx`SC-0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e]zBf;9 J  
*/ C$XU%5qi  
public void sort(int[] data) { PamO8^!G  
int temp; 67Th;h*sh  
for (int i = 0; i < data.length; i++) { OWg(#pZk  
int lowIndex = i; QC}CRkp  
for (int j = data.length - 1; j > i; j--) { 'Wm x)0)  
if (data[j] < data[lowIndex]) { \RC'XKQ*n  
lowIndex = j; 5Ou`z5S\k  
} woK&q7Vn  
} RO'7\xvn  
SortUtil.swap(data,i,lowIndex); }E50>g  
} heV=)8  
} ^LoUi1j  
6\q]rfQ  
} rE.;g^4p  
RwpdRBb  
Shell排序: huh6t !  
b?tB(if!I  
package org.rut.util.algorithm.support; j}.\]$J  
CDK 5  
import org.rut.util.algorithm.SortUtil; !xo{-@@wS  
fof TP1  
/** d,B:kE0Y  
* @author treeroot sN9&,&W1  
* @since 2006-2-2 BHU6t<G  
* @version 1.0 KUlp"{a`,K  
*/ 3sy (vC  
public class ShellSort implements SortUtil.Sort{ ;;6uw\6 O  
V{/?FO?E  
/* (non-Javadoc) a%/9v"}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s@K4u^$A  
*/ .$+#1-  
public void sort(int[] data) { 61k"p2?+  
for(int i=data.length/2;i>2;i/=2){ }HFN3cq;C  
for(int j=0;j insertSort(data,j,i); 'h|DO/X~L  
} *zb Nd:i9  
} |B.Y6L6l  
insertSort(data,0,1); P-yjN  
} <7/R,\Wg~  
7QiIiWqIWC  
/** \/zq7j  
* @param data YIQ 4t  
* @param j N"Zt47(  
* @param i 0"  
*/ Nfrw0b  
private void insertSort(int[] data, int start, int inc) { 1WxK#c-)  
int temp; 3Q.#c,`jV  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); PNgY >=Y  
} l rlgz[  
} W$hx,VEy`  
} &=] ~0$  
N8F~8lTi  
} IP xiV]c  
r*2+xDoEi  
快速排序: p6>Svcc  
8lvV4yb  
package org.rut.util.algorithm.support; g+vva"  
RO+GK`J  
import org.rut.util.algorithm.SortUtil; Lo{ E:5q  
G|!Tj X7s  
/** vlmB`T  
* @author treeroot qouhuH_WtJ  
* @since 2006-2-2 %Nlt H/I  
* @version 1.0 M?Y;a5{  
*/ ,8U &?8l  
public class QuickSort implements SortUtil.Sort{ snE8 K}4  
[=6]+V83M  
/* (non-Javadoc) y\4L{GlBM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )~)J?l3 {  
*/ *2p t%eav  
public void sort(int[] data) { Gp?a(-K5  
quickSort(data,0,data.length-1); [B\h$IcRv  
} xHv ZV<#  
private void quickSort(int[] data,int i,int j){ f phv  
int pivotIndex=(i+j)/2; #+Ir>GU  
file://swap jS]ru-5.  
SortUtil.swap(data,pivotIndex,j); +%yfcyZ.  
x kx^%3dV  
int k=partition(data,i-1,j,data[j]); 81? hY4  
SortUtil.swap(data,k,j); nLbFg0?+t  
if((k-i)>1) quickSort(data,i,k-1); h \fjBDU^  
if((j-k)>1) quickSort(data,k+1,j); ^ Edfv5  
X5zDpi|Dq  
} +rd|A|hRq  
/** vyNxT*,[K  
* @param data kbX8$xTM  
* @param i _hAcJ{Y  
* @param j 8]M;T>n[  
* @return 'f!8DGix  
*/ V,lOt4b  
private int partition(int[] data, int l, int r,int pivot) { eenH0Ovv  
do{ 7Wf/$vRab  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 4[m`#  
SortUtil.swap(data,l,r); \ub7`01  
} % L$bf#  
while(l SortUtil.swap(data,l,r); {f/~1G[M  
return l; k9sh @ENy  
} vYwYQG  
%KC yb  
} F~R;n_IJ  
hgYZOwQ  
改进后的快速排序: 0fb2;&pUa  
s Ep"D+f  
package org.rut.util.algorithm.support; b[r8 e  
PCHu #5j_a  
import org.rut.util.algorithm.SortUtil; DU0zez I9  
M'?,] an  
/** ZQ4p(6a   
* @author treeroot %aG5F}S2~  
* @since 2006-2-2 9vuyv*-}e  
* @version 1.0 g/ T   
*/ | k&Ck  
public class ImprovedQuickSort implements SortUtil.Sort { \(?rQg@U  
CM/H9Kz.  
private static int MAX_STACK_SIZE=4096; $O&b``  
private static int THRESHOLD=10; pA'4|ffwe  
/* (non-Javadoc) zqimR#u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cvn@/qBq*t  
*/ "%`1 ]Fr  
public void sort(int[] data) { dU&a{ $ku[  
int[] stack=new int[MAX_STACK_SIZE]; <Th6r.#?  
yZ0-wI  
int top=-1; g!g#]9j  
int pivot; jD$,.AVvz  
int pivotIndex,l,r; "@e3EX7h  
?&8^&brwG  
stack[++top]=0; {fPy=,>Nb  
stack[++top]=data.length-1; f(>p=%=O  
J{.{f  
while(top>0){ 0.`/X66;V  
int j=stack[top--]; Z;h t  
int i=stack[top--]; Q- cFtu-w  
m|SUV  
pivotIndex=(i+j)/2; Rvqq.I8aC  
pivot=data[pivotIndex]; QyEn pZ8?a  
*RI]?j%B  
SortUtil.swap(data,pivotIndex,j); l.67++_  
|XaIx#n  
file://partition C.WX.Je  
l=i-1; ~Otq %MQ  
r=j; #{\J Nb+w%  
do{ FvaUsOy "  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); [>jbhV'  
SortUtil.swap(data,l,r); pR*VdC _mY  
} K^ vIUZ>  
while(l SortUtil.swap(data,l,r); |U:k,YH  
SortUtil.swap(data,l,j); r<9Iof4  
j@n)kPo,1  
if((l-i)>THRESHOLD){ k$4y9{  
stack[++top]=i; Z+*9#!?J  
stack[++top]=l-1; 9g9HlB&Ze  
} Xpr?Kgz  
if((j-l)>THRESHOLD){ Y xr>"KH6a  
stack[++top]=l+1; T:27r8"Rh  
stack[++top]=j; OV1_|##LC  
} 0z`a1 %U  
0!4Ts3qn1  
} LK{*sHi$  
file://new InsertSort().sort(data); sQYkQ81  
insertSort(data); a!zz6/q[  
} D#_3^Kiawj  
/** :NhO2L  
* @param data G!Op~p@Jm  
*/ cVXLKO  
private void insertSort(int[] data) { 0eT(J7[ <  
int temp; LoURC$lS  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); UE8kpa)cQ  
} vk}n,ecl  
} S ^!n45l  
} Y4J3-wK5  
j_qbAP  
} 4V{:uuI;f  
[]\+k31D  
归并排序: w;%.2VJ  
GoJ.&aH $  
package org.rut.util.algorithm.support; KI.q@zO6|  
6/f7<  
import org.rut.util.algorithm.SortUtil; k9<;woOBO  
35h 8O,Y  
/** 'F/~o1\.  
* @author treeroot 5VfyU8)7X  
* @since 2006-2-2 +KF^Z$I  
* @version 1.0 Q7HRzA^-  
*/ T.])diuvj-  
public class MergeSort implements SortUtil.Sort{ i[O& )N,c  
`fA@hK   
/* (non-Javadoc) ^7 w+l @  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `{f}3bO7C  
*/ zG }@0  
public void sort(int[] data) { +>8'mf  
int[] temp=new int[data.length]; C/q'=:H;  
mergeSort(data,temp,0,data.length-1); us1Hu)  
} NG=@ -eu  
_?-E7:Sw  
private void mergeSort(int[] data,int[] temp,int l,int r){ JYMiLph<  
int mid=(l+r)/2; YDIG,%uv  
if(l==r) return ; pI1-cV,`  
mergeSort(data,temp,l,mid); ;dkYf24  
mergeSort(data,temp,mid+1,r); T]^62(So  
for(int i=l;i<=r;i++){  Fe#  1  
temp=data; 9>= ;FY  
} 9"N~yKa`"K  
int i1=l; B~'vCuE  
int i2=mid+1; Q3XpHnufu+  
for(int cur=l;cur<=r;cur++){ 1rNzJ;'  
if(i1==mid+1) =T3 <gGM  
data[cur]=temp[i2++]; |.(dq^  
else if(i2>r) ]Oe2JfJwx  
data[cur]=temp[i1++]; r7RIRg_  
else if(temp[i1] data[cur]=temp[i1++]; R8Wr^s>'  
else 0%32=k7O[  
data[cur]=temp[i2++]; /,BD#|  
} zUt' QH7E.  
} EB0TTJR?#  
]RZ|u*l=x  
} &9.Cl;I  
WEw6He;  
改进后的归并排序: ,cXD.y  
=%BSKSG.  
package org.rut.util.algorithm.support; a]$1D!Anc  
2+RUTOv/d  
import org.rut.util.algorithm.SortUtil; VRVO-Sk  
M  f}~{+  
/** c_dVWh e  
* @author treeroot zKyyU}LHH  
* @since 2006-2-2 b10cuy|a/X  
* @version 1.0 tl[Uw[  
*/ P:hBt\5B  
public class ImprovedMergeSort implements SortUtil.Sort { 4`lLf  
CLxynZ \;  
private static final int THRESHOLD = 10; Bm:98? [  
3RigzT3  
/* 59 h]UX=  
* (non-Javadoc) Ka'=o?'B5  
* '<gI8W</  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xI{)6t$`  
*/ *zaQx+L  
public void sort(int[] data) { p99 ]  
int[] temp=new int[data.length]; $CRm3#+ ~  
mergeSort(data,temp,0,data.length-1); <KJ/<0l  
} el&0}`K  
bc7/V#W  
private void mergeSort(int[] data, int[] temp, int l, int r) { rbul8(1h  
int i, j, k; Z@yW bjE7Z  
int mid = (l + r) / 2; 3>3Kwc~E  
if (l == r) D+#E -8  
return; *-#&K\  
if ((mid - l) >= THRESHOLD) Ij 79~pn  
mergeSort(data, temp, l, mid); rExnxQ<e  
else -fM1nH&  
insertSort(data, l, mid - l + 1); 2\R'@L*  
if ((r - mid) > THRESHOLD) _1!7V3|^  
mergeSort(data, temp, mid + 1, r); xn?a. 3b'  
else m1j*mtu  
insertSort(data, mid + 1, r - mid); gx-2v|pZ  
@hl.lq  
for (i = l; i <= mid; i++) { 5v[*:0p'  
temp = data; ajve~8/&  
} :)8VdWg  
for (j = 1; j <= r - mid; j++) { _aq 8@E~  
temp[r - j + 1] = data[j + mid]; t;){D:]k  
} ]v?@g:i E  
int a = temp[l]; #./fY;:cj  
int b = temp[r]; -Sq z5lo  
for (i = l, j = r, k = l; k <= r; k++) { Ah1]Y}sy  
if (a < b) { M "ui0 ac  
data[k] = temp[i++];  hz{`h  
a = temp; BfXgh'Z~  
} else { K> %Tq  
data[k] = temp[j--]; [m- >5H  
b = temp[j]; SDL7<ZaE  
} Eu0akqZ  
} We)xB  
} )Fc%+TpKi  
HUcq% .  
/** 6 [k\@&V-  
* @param data Jf@H/luW  
* @param l HsxVZ.dS  
* @param i GmK^}=frj  
*/ +|*IZ:w)  
private void insertSort(int[] data, int start, int len) { <:_wbVn-  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 0`Kj 25  
} )z>|4@,  
} Qo>b*Ku;  
} @<,X0S  
} .28<tEf  
YP 6` L  
堆排序: -<6\1J  
} j<)L,  
package org.rut.util.algorithm.support; ~cWAl,(B<F  
%Celc#v  
import org.rut.util.algorithm.SortUtil;  Ii6<b6-  
AWcLUe{  
/** 5sdn[Tt##  
* @author treeroot 4"GR] X  
* @since 2006-2-2 '|ad_M  
* @version 1.0 y~(h>gi,x  
*/ .nTwPrG  
public class HeapSort implements SortUtil.Sort{ \-L&5x"x  
u^&A W$  
/* (non-Javadoc)  JR'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q~ tz? T_  
*/ 88Ey12$  
public void sort(int[] data) { 6e(Qwt  
MaxHeap h=new MaxHeap(); 0*VWzH   
h.init(data); q$p%ZefZ  
for(int i=0;i h.remove(); ) g0%{dfJ  
System.arraycopy(h.queue,1,data,0,data.length); Y$o< 6[7  
} z__EYh  
4Xgg%@C  
private static class MaxHeap{ zofa-7'Bn  
toLV4BtIG  
void init(int[] data){ #||}R[~P"  
this.queue=new int[data.length+1]; :1^LsLr5  
for(int i=0;i queue[++size]=data; Fiv3 {.  
fixUp(size); ,Z aRy$?  
} {SOr#{1z*  
} X1,I  
GC<l#3+  
private int size=0; XND|h#i8  
B`YTl~4  
private int[] queue; ^/)^7\@  
d^@dzNv  
public int get() { I?]ohG K  
return queue[1]; <qtr   
} Wfu(*  
'>NCMB{*  
public void remove() { 7jxslI&F  
SortUtil.swap(queue,1,size--); ?:pP8/y  
fixDown(1); 0\H\lKcK  
} |<HPn4 ,X  
file://fixdown wYd b*"R  
private void fixDown(int k) { QFE:tBHe  
int j; 6O|@xvg  
while ((j = k << 1) <= size) { oOnop-z7  
if (j < size %26amp;%26amp; queue[j] j++; .RE:;<|w  
if (queue[k]>queue[j]) file://不用交换 kd>hhiz|  
break; j1^I+j)  
SortUtil.swap(queue,j,k); 1!ii;s^e  
k = j; R"4Vtww  
} 1=r#d-\tR  
} 4Fa~Aog  
private void fixUp(int k) { "C }b%aO:  
while (k > 1) { v;BV@E0}x  
int j = k >> 1; Ld\R:{M"  
if (queue[j]>queue[k]) aL*&r~`&e'  
break; Mh~q//  
SortUtil.swap(queue,j,k); Olt `:;j-  
k = j; ) dn(G@5  
} T m,b,hi$  
} bhID#&  
.O74V~T  
} pqk?|BvpK_  
H0:E(}@   
} gGvz(R: y  
c*(bO3 b  
SortUtil: J\/cCW-rF  
w&X<5'GM  
package org.rut.util.algorithm; ccB&O _  
pSoiH<33  
import org.rut.util.algorithm.support.BubbleSort; "&%I)e^  
import org.rut.util.algorithm.support.HeapSort; 0+iu(VbF  
import org.rut.util.algorithm.support.ImprovedMergeSort; Y}x>t* I  
import org.rut.util.algorithm.support.ImprovedQuickSort; 4^:\0U F  
import org.rut.util.algorithm.support.InsertSort; 4Z1ST;  
import org.rut.util.algorithm.support.MergeSort; ?@BTGUK"C  
import org.rut.util.algorithm.support.QuickSort; .Fs7z7?Y  
import org.rut.util.algorithm.support.SelectionSort; 2n3W=dF  
import org.rut.util.algorithm.support.ShellSort; 5*E]ETo@R  
O#b6mKPt;t  
/** O|\J}rm'  
* @author treeroot c$ao:nP)D  
* @since 2006-2-2 dUsYZdQs  
* @version 1.0 U(a#@K !H  
*/ .+qQYDE w  
public class SortUtil { Fa?~0H/DL  
public final static int INSERT = 1;  RwKdxK+;  
public final static int BUBBLE = 2; vo`2\R.  
public final static int SELECTION = 3; 05z,b]>l  
public final static int SHELL = 4; kr+D,h01  
public final static int QUICK = 5; 6tB+JF  
public final static int IMPROVED_QUICK = 6; E;,u2[3  
public final static int MERGE = 7; $g/SWq  
public final static int IMPROVED_MERGE = 8; .}&` TU  
public final static int HEAP = 9; 0Z~p%C<LW  
Z?}dq-Vh&  
public static void sort(int[] data) { 'w!Cn>  
sort(data, IMPROVED_QUICK); 8?J&`e/  
} ZU85P0  
private static String[] name={ JX -' mV`  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" R?68*} `7  
}; j!_;1++q  
H#NCi~M>3  
private static Sort[] impl=new Sort[]{ %4ePc-  
new InsertSort(), @AG n{q  
new BubbleSort(), X59: C3c  
new SelectionSort(), 0":ib0=  
new ShellSort(), T29Dt  
new QuickSort(), YX=a#%vrl  
new ImprovedQuickSort(), kv3E4,<9  
new MergeSort(), ,ek_R)&[o  
new ImprovedMergeSort(), #i@;J]x(  
new HeapSort() ^c<ucv6.  
}; wLmhy,  
]4~lYuI4  
public static String toString(int algorithm){ K#EvFs`s;  
return name[algorithm-1]; p!>oo1&  
} vtw6FX_B  
=G]1LTI  
public static void sort(int[] data, int algorithm) { qC}-_u7s  
impl[algorithm-1].sort(data); DBPRGQ  
} y<HO:kZ8`  
W{%TlN  
public static interface Sort { {)"iiJ  
public void sort(int[] data); '>&^zgr  
} } ~h3c|  
U F?H>Y&  
public static void swap(int[] data, int i, int j) { iTFdN}U  
int temp = data; )0ea+ ib  
data = data[j]; (5#nrF]  
data[j] = temp; eCN })An  
} =+ytTQc*ot  
} f47Od-\-  
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