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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。 f1?%p)C  
插入排序: j?g#8L;W\w  
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package org.rut.util.algorithm.support; "xn,'`a  
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import org.rut.util.algorithm.SortUtil; 8iM:ok  
/** x(p/9$.#  
* @author treeroot m\E=I5*/  
* @since 2006-2-2 `cIeqp  
* @version 1.0 E,cQ9}/  
*/ o 9(x\g  
public class InsertSort implements SortUtil.Sort{  j8]M}Q$  
P>$+XrTE  
/* (non-Javadoc) ;jO+<~YP!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |;^$IZSsz  
*/ lR mVeq:  
public void sort(int[] data) { [nlq(DGJhp  
int temp; `:jF%3ks+0  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7#X`D  
} Zq H-]?)  
} y,@yaM}-/K  
} . ~a~(|  
M@p<L VP  
} ?6L8#"=  
?^LG>GgV  
冒泡排序: d`% 7Pk  
V|*3*W  
package org.rut.util.algorithm.support; [57`V &c5  
x<@i3Y{[  
import org.rut.util.algorithm.SortUtil; 8@|{n`n]  
\< a^5'  
/** T)Q_dF.N  
* @author treeroot jj]|}G  
* @since 2006-2-2 HiD%BL>%  
* @version 1.0 q'IMt7}  
*/ JSaF7(a =  
public class BubbleSort implements SortUtil.Sort{ r=p^~tuyxr  
AJ3Byb=.  
/* (non-Javadoc) Xg\unUHa  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <7zz"R  
*/ B]mMwqM#  
public void sort(int[] data) { 3C'6i  
int temp; hzpl;Mj  
for(int i=0;i for(int j=data.length-1;j>i;j--){ (]10Z8"fJ  
if(data[j] SortUtil.swap(data,j,j-1); w'7J`n: {]  
} OYb:);o,iE  
} |`fuu2W!  
} CkNh3'<wg  
} @W~aoq6  
W@zu N)U  
} !1A< jL  
S@y?E}  
选择排序: bfpoX,:   
 ':DL  
package org.rut.util.algorithm.support; -.L )\  
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import org.rut.util.algorithm.SortUtil; a4Z e!l(  
G]mD_J1$  
/** ULs'oT)K;  
* @author treeroot 2OqEyXh  
* @since 2006-2-2 |$+/IxDP  
* @version 1.0 @=Dc(5`[  
*/ `DM)tm3&m  
public class SelectionSort implements SortUtil.Sort { Y##lFEt  
h`(VMf'#  
/* s0 Z)BR #  
* (non-Javadoc) P :%b[7  
* 'MNCJ;A@V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &5G@YQD1e  
*/ "D KrQ,L  
public void sort(int[] data) { Md8<IFi9]Q  
int temp; P8;1,?ou  
for (int i = 0; i < data.length; i++) { A]drNFE  
int lowIndex = i; QXO~DR1  
for (int j = data.length - 1; j > i; j--) { T[c-E*{hR  
if (data[j] < data[lowIndex]) {  .C5JQO  
lowIndex = j; zz(EH<>  
} nwqA\  
} 4]-7S l,  
SortUtil.swap(data,i,lowIndex); 02,.UqCz  
} hF`<I.z}  
} 'tU\~3k  
| h+vdE8  
} c\O2|'JzE  
!| - U,  
Shell排序: Z`zLrXPD)  
4X+I2CD  
package org.rut.util.algorithm.support; ]\k& l ['  
<'7s3  
import org.rut.util.algorithm.SortUtil; x"cB8bZ!$  
IYH4@v/#  
/** 5g$>J)Ry  
* @author treeroot mAJ'>^`^  
* @since 2006-2-2 Kb1@+  
* @version 1.0 r:4]:NKCi  
*/ YD{N)v  
public class ShellSort implements SortUtil.Sort{ ?{5}3a bB`  
X|QokAR{$>  
/* (non-Javadoc) .])X.7@x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :VLYF$|  
*/ Q/*|ADoq  
public void sort(int[] data) { R|` `A5zQ  
for(int i=data.length/2;i>2;i/=2){ <s$T7Zk  
for(int j=0;j insertSort(data,j,i); 0;`+e22  
} 1?.NJ<)F  
} og&h$<uOZt  
insertSort(data,0,1); LnsYtkb r  
} N.ZuSkRM  
y0/FyQs  
/** ` K0PLxSv  
* @param data 6BM$u v4  
* @param j S1m5z,G  
* @param i #EB Rc4>,  
*/ D(&WEmm\B  
private void insertSort(int[] data, int start, int inc) { F~bDg tN3  
int temp;  !$!%era`  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); iM6(bmc.  
} b*{UO  
} gr{*wYL  
} <HIM k  
uY/C iTWr  
} {zLgLBM  
|YfJ#Agm+  
快速排序: ?[Ma" l>  
Q~P|=*  
package org.rut.util.algorithm.support; GhjqStjS&l  
{K?e6-N(z  
import org.rut.util.algorithm.SortUtil; \C$cbI=;+  
qEl PYN*wF  
/** \=xS?(v!  
* @author treeroot RZ ?SiwE  
* @since 2006-2-2 |zd5P  
* @version 1.0 `>)pqI%L[g  
*/ !;hp  
public class QuickSort implements SortUtil.Sort{ dxtG3  
_ sy]k A  
/* (non-Javadoc) up0=Y o@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !(Q@1 c&z  
*/ >B*zzj  
public void sort(int[] data) { p<w C{D  
quickSort(data,0,data.length-1); O'3/21)|y  
} J |UFuD  
private void quickSort(int[] data,int i,int j){ S-</(,E}|  
int pivotIndex=(i+j)/2; }m7$,'C%P  
file://swap sOS^  
SortUtil.swap(data,pivotIndex,j); TqOH(= {  
J(= y$8xje  
int k=partition(data,i-1,j,data[j]); =En1?3?  
SortUtil.swap(data,k,j); _9Rj,  
if((k-i)>1) quickSort(data,i,k-1); !T8sWMY  
if((j-k)>1) quickSort(data,k+1,j); 1rLxF{,  
#YK3Ogb,  
} .f>7a;V?}  
/** {eQijW2Z3  
* @param data NS*Lv  
* @param i |+>U91!  
* @param j ~@[<y1g?nG  
* @return @l5GBsLK  
*/ 9jNh%raG|  
private int partition(int[] data, int l, int r,int pivot) { \b$Y_  
do{ GJHJ?^%  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); f;Ijl0d@  
SortUtil.swap(data,l,r); p1mAoVxR  
} yMD0Tj5ZQ  
while(l SortUtil.swap(data,l,r); /V#? d  
return l; +V[;DOlll  
} E0DquVrz  
Pj{I} 4P`  
} =U8+1b  
)a `kL,  
改进后的快速排序: }Gx@1)??  
uf:'"7V7  
package org.rut.util.algorithm.support; K*4ib/'E a  
]&P 4QT)f  
import org.rut.util.algorithm.SortUtil; *Ue#Sade  
}9;mtMR$  
/** b' ~WS4xlD  
* @author treeroot .0;\cv4}  
* @since 2006-2-2 5 [4{1v  
* @version 1.0 Re'3bs:+  
*/ soX^$l  
public class ImprovedQuickSort implements SortUtil.Sort { Q|2*V1"r<2  
t"e%'dFv  
private static int MAX_STACK_SIZE=4096; U^qS[HM  
private static int THRESHOLD=10; :()K2<E  
/* (non-Javadoc) OIjG`~Rx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DNyt_5j&:  
*/ _?$w8 S%  
public void sort(int[] data) { 0(&Rm R  
int[] stack=new int[MAX_STACK_SIZE]; v!3Oq.ot  
@uG/2'B(  
int top=-1; c%+uji6  
int pivot; 78?cCj{e  
int pivotIndex,l,r; j8rxhToC  
<yvo<R^30  
stack[++top]=0; &h=f  
stack[++top]=data.length-1; fGe"1MfU  
/ZH*t\  
while(top>0){ NJOV!\k  
int j=stack[top--]; 8E9k7  
int i=stack[top--]; CoWT  
JRAU|gr  
pivotIndex=(i+j)/2; 4E1j0ARQQ  
pivot=data[pivotIndex]; F5M|QX@-  
9F~5Ht  
SortUtil.swap(data,pivotIndex,j); ejbtdU8N<  
!X-ThKEq  
file://partition eiRVw5g  
l=i-1; %/hokyx  
r=j; R$+"'N6p  
do{ 'GO *6$/  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ,Z7Ky*<j  
SortUtil.swap(data,l,r); Fx)><+-  
} VD =f 'D  
while(l SortUtil.swap(data,l,r); #c'}_s2F[  
SortUtil.swap(data,l,j); aQzmobleep  
3x z z* <  
if((l-i)>THRESHOLD){ `1y@c"t  
stack[++top]=i; |It{L0=U  
stack[++top]=l-1; !d[]Qt%mA  
} ,JPDPI/a  
if((j-l)>THRESHOLD){ HW"5MZ8E  
stack[++top]=l+1; s:z  
stack[++top]=j; -B-HZ_  
} C]ax}P>BQ  
M*~XpT3  
} 7;?7q  
file://new InsertSort().sort(data); f3:dn7  
insertSort(data); ]5MT-qU  
} u9]M3>  
/** Mt%Q5^  
* @param data I7t}$ S6  
*/ Lw?>1rTT/  
private void insertSort(int[] data) { _p9 _Pg8  
int temp;   &._Mh  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Zu P3/d  
} <xH! Yskc  
} s9fEx -!y  
} v`:!$U* H=  
;$qc@)Uwp  
} AU9:Gu@M/  
'[HU!8F  
归并排序: H$ :BJ$x@  
(dV7N  
package org.rut.util.algorithm.support; Z0wH%o\  
T/J1 b-  
import org.rut.util.algorithm.SortUtil; oDG BC  
 Lu[Hz8  
/** Lg2PP#r  
* @author treeroot WW7E*kc  
* @since 2006-2-2 oB '5':  
* @version 1.0 "39mhX2  
*/ ~uB@oKMru  
public class MergeSort implements SortUtil.Sort{ \rS-}DG  
:&E~~EUW  
/* (non-Javadoc) A$;*O)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VjZb\ d4  
*/ #ZHKq7  
public void sort(int[] data) { uF)^mT0D=  
int[] temp=new int[data.length]; ``kesz  
mergeSort(data,temp,0,data.length-1); cwQ *P$n  
} 5D3&6DCH  
\fYPz }wt  
private void mergeSort(int[] data,int[] temp,int l,int r){ X [?E{[@Z  
int mid=(l+r)/2; [:A">eYI  
if(l==r) return ; 2%`8  
mergeSort(data,temp,l,mid); qi8AK(v  
mergeSort(data,temp,mid+1,r); ogya~/  
for(int i=l;i<=r;i++){ N2u4MI2  
temp=data; $ylxl"Y  
} (;HO3Z".q$  
int i1=l; )k `+9}OO  
int i2=mid+1; V {}TG]  
for(int cur=l;cur<=r;cur++){ F0kQ/x  
if(i1==mid+1) +5kQ;D{+  
data[cur]=temp[i2++]; *$mb~k^R  
else if(i2>r) XqcNFSo)  
data[cur]=temp[i1++]; Jr>Nc}!U  
else if(temp[i1] data[cur]=temp[i1++]; ^{E_fQJX  
else f uH3C~u7<  
data[cur]=temp[i2++]; nGTqW/k[+s  
} Fg2/rC:_  
} cn9=wm\\  
E6-~  
} &G3$q,`H  
Nvd(Tad  
改进后的归并排序: .Lm`v0' w  
s>TC~d82  
package org.rut.util.algorithm.support; ;\T~Hc}&;  
u(`7F(R  
import org.rut.util.algorithm.SortUtil; 160BgFM  
o+S?j*mv@  
/** F5w=tK  
* @author treeroot =knBwjeD  
* @since 2006-2-2 D2\EpL/  
* @version 1.0 = mhg@N4  
*/ Yg1HvSw\  
public class ImprovedMergeSort implements SortUtil.Sort { Z/;8eb*B7  
~6Odw GWV  
private static final int THRESHOLD = 10; 8PG&/ " K  
FGpV ]p  
/* J]Q-#g'Z  
* (non-Javadoc) SNHAL F  
* P>|sCF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~k ]$J|}za  
*/ 4%u\dTg/B  
public void sort(int[] data) { #"o`'5  
int[] temp=new int[data.length]; f>?b2a2HX  
mergeSort(data,temp,0,data.length-1); Jd33QL}Hj  
} 1flBA,6L  
uU+?:C  
private void mergeSort(int[] data, int[] temp, int l, int r) { !B#tJD  
int i, j, k; UXHtmi|_:  
int mid = (l + r) / 2; "YV vmCp  
if (l == r) Hqu?="f=  
return; 7TZ,bD_  
if ((mid - l) >= THRESHOLD) Uz `OAb  
mergeSort(data, temp, l, mid); G4uOY?0N  
else ORfMp'uP=  
insertSort(data, l, mid - l + 1); ZYz8ul$E  
if ((r - mid) > THRESHOLD) ;#7:}>}rO  
mergeSort(data, temp, mid + 1, r); id/y_ekfP  
else O*Z -3 l  
insertSort(data, mid + 1, r - mid); *uF Iw}C/  
01+TVWKX  
for (i = l; i <= mid; i++) { C3C&hq\%  
temp = data; `O?j -zR  
} W{kTM4  
for (j = 1; j <= r - mid; j++) { c>#3{}X|x%  
temp[r - j + 1] = data[j + mid]; 1EliR uJ  
} y*I,i*iv  
int a = temp[l]; : p7PiqQ  
int b = temp[r]; mxCqN1:#  
for (i = l, j = r, k = l; k <= r; k++) { F Zk[w>{  
if (a < b) { 3X1 U  
data[k] = temp[i++]; h;J%Z!Rjw  
a = temp; Oc / i'  
} else { F[0w*i&u5  
data[k] = temp[j--]; v0%FG9Gk  
b = temp[j]; 7+P-MT  
} 08nA}+k  
} b .xG'  
} //^{u[lr  
Lo +H&-  
/** G-DOI  
* @param data s09&A]G  
* @param l _2<d6@}  
* @param i x0q `Uc  
*/ kg$w<C@#"  
private void insertSort(int[] data, int start, int len) { sg_%=;  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 9]a!1  
} 0}$R4<"{Y>  
} H$xUOqL  
} v+d? #^  
} MAgoxq~;V  
-qB{TA-.\  
堆排序: K- TLzoYA  
3MHByT %  
package org.rut.util.algorithm.support; R=L-Ulhk  
ER<Z!*2  
import org.rut.util.algorithm.SortUtil; twql)lbx  
qB3=wFI  
/** @P<Mc )o^  
* @author treeroot  `=I@W  
* @since 2006-2-2 q&: t$tSS  
* @version 1.0 !f# [4Xw  
*/ b*cVC^{Dy  
public class HeapSort implements SortUtil.Sort{ 6 $+b2&V  
B|- W  
/* (non-Javadoc) 8?t}S2n2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l'"Ici#7Ls  
*/ ztV%W6  
public void sort(int[] data) { ^FK-e;J  
MaxHeap h=new MaxHeap(); /6#i$\ j  
h.init(data); \Jr7Hy1;  
for(int i=0;i h.remove(); OJ)XJL  
System.arraycopy(h.queue,1,data,0,data.length); /#e-x|L  
} W%K=N-kE_  
j`k :)  
private static class MaxHeap{ 3}i(i0+  
j4eq.{$  
void init(int[] data){ \l/<[ZZ  
this.queue=new int[data.length+1]; +Pb@@C&  
for(int i=0;i queue[++size]=data; l gTw>r   
fixUp(size); Y r 1k\q  
} ?4lEHef  
} bU_P@GKB  
S| l%JM^  
private int size=0; x7c#kU2A&Z  
#h2 qrX&+  
private int[] queue; .&n;S';"  
lAPPn g`  
public int get() { *Q,9 [k  
return queue[1]; s^-o_K\*c  
} o1rH@D6/-  
:74G5U8%  
public void remove() { ~> 5  
SortUtil.swap(queue,1,size--); AF"XsEt.e  
fixDown(1); W^1)70<y  
} 8,?*eYNjb  
file://fixdown QQX7p!~E  
private void fixDown(int k) { v'u}%FC  
int j; XM?C7/^k  
while ((j = k << 1) <= size) { 3qrjb]E%}  
if (j < size %26amp;%26amp; queue[j] j++; a*Ng+~5)6  
if (queue[k]>queue[j]) file://不用交换 Z`{GjV3%wH  
break; *!yY7 ~#  
SortUtil.swap(queue,j,k); ^a;412  
k = j; :X#'E Lo|  
} vN`JP`IBx  
} ddvtBAX  
private void fixUp(int k) { rJc=&'{&)N  
while (k > 1) { ?YhGW   
int j = k >> 1; hbTJXP~~?  
if (queue[j]>queue[k]) (^LR9 CW  
break; Y j*Y*LB~  
SortUtil.swap(queue,j,k); v^(J+d_>   
k = j; 2I1CKA:7g  
} "l 1z@  
} C 4hvk'=  
e2M jV8Bs  
} lxOUV?m^N  
p!2t/XIM  
} tcj3x<  
hg}R(.1K=  
SortUtil: 420yaw/":  
3("E5lI(g:  
package org.rut.util.algorithm; r[RO"Ej"  
U7d05y'  
import org.rut.util.algorithm.support.BubbleSort; 2B=+p83<  
import org.rut.util.algorithm.support.HeapSort; ,:?=j80m  
import org.rut.util.algorithm.support.ImprovedMergeSort; S)G*+)  
import org.rut.util.algorithm.support.ImprovedQuickSort; <+e&E9;>6  
import org.rut.util.algorithm.support.InsertSort; q|N4d9/b  
import org.rut.util.algorithm.support.MergeSort; ,PZ[CX;H@  
import org.rut.util.algorithm.support.QuickSort; ]gB:ht  
import org.rut.util.algorithm.support.SelectionSort; , @dhJ8/  
import org.rut.util.algorithm.support.ShellSort; }y#aO  
9c=`Q5  
/** >d5L4&r  
* @author treeroot km9@*@)  
* @since 2006-2-2 ]d50J@W c  
* @version 1.0 (, 2U?p  
*/ _ }:#T8h  
public class SortUtil { e^Glgaf  
public final static int INSERT = 1; Zi ;7.PqL  
public final static int BUBBLE = 2; VyxX5Lrj  
public final static int SELECTION = 3; F=~LVaF/_  
public final static int SHELL = 4; g 9:V00^<  
public final static int QUICK = 5; .0#{ ?R,  
public final static int IMPROVED_QUICK = 6; Yjp*T:6  
public final static int MERGE = 7; bDM;7fFp$  
public final static int IMPROVED_MERGE = 8; :V:siIDn  
public final static int HEAP = 9; 5D`!Tu3  
R(<_p"9(  
public static void sort(int[] data) { 6gJc?+  
sort(data, IMPROVED_QUICK); gL6.,4q+1  
} rJ fO/WK  
private static String[] name={ Ihg1%.^V\  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" y_N h5  
}; PW GN UNc  
 '' Pfs<!  
private static Sort[] impl=new Sort[]{ ?/^x)Nm  
new InsertSort(), C+Pw  
new BubbleSort(), lsRW.h,  
new SelectionSort(), +"Mlj$O  
new ShellSort(), HWi: CDgm  
new QuickSort(), F`JW&r\  
new ImprovedQuickSort(), qJT|om L Y  
new MergeSort(), -)Y[t Z^*`  
new ImprovedMergeSort(), #EX NSr  
new HeapSort() yU< "tgE  
}; ]5j1p6;(`  
uw9w{3]0f  
public static String toString(int algorithm){ @w@ `-1  
return name[algorithm-1]; $z'_Hr'  
} :, Ad1(  
L|K^w *\C  
public static void sort(int[] data, int algorithm) { 9:]|TIPi  
impl[algorithm-1].sort(data); FpFkZFtG'm  
} .V?>Jhok  
SyCa~M!}>  
public static interface Sort { Bu,VLIba  
public void sort(int[] data); nT xN>?l2E  
} yc3i> w`  
W)fh}|.5  
public static void swap(int[] data, int i, int j) { DyPb]Udb:  
int temp = data; QN OA66  
data = data[j]; V.Qy4u7m  
data[j] = temp; Xo~kB)|,  
} pQ9~^  
} ^fxS=Qs+  
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