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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。 a [f}-t9  
插入排序: 7WmY:g#s  
s]D1s%Mx  
package org.rut.util.algorithm.support; k6\&[BQs  
=<ht@-1  
import org.rut.util.algorithm.SortUtil; fM*aZc*Y  
/** eqWs(`  
* @author treeroot TA#pA(k  
* @since 2006-2-2 h 3  J&  
* @version 1.0 8'v:26   
*/ ^ $N3.O.  
public class InsertSort implements SortUtil.Sort{ =xb/zu(  
IiX2O(*ZE  
/* (non-Javadoc) |]Y6*uEX<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @?0))@kPc3  
*/ RE]*fRe7#  
public void sort(int[] data) { GW.Y= S  
int temp; ]RF(0;  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )}i2x:\|_  
} rDc$#  
} c/(Dg$DbX  
} =65XT^  
WaE%g   
} z`]:\j'O3"  
N Zwi3  
冒泡排序: Ov.oyke4  
O8LIKD_I[  
package org.rut.util.algorithm.support; D8$4PT0u  
$?pfst~;O  
import org.rut.util.algorithm.SortUtil; ykGA.wo7/P  
Ffd;aZ4n  
/** ]XYD2fR2qA  
* @author treeroot Emk:@$3{r  
* @since 2006-2-2 1{qG?1<zZ6  
* @version 1.0 }L^PZS@Jf  
*/ aHNn!9#1  
public class BubbleSort implements SortUtil.Sort{ E*+]Iq1u  
v,iq,p)&  
/* (non-Javadoc) o$}$Z&LK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zzT4+wy`  
*/ ,V;HM F.  
public void sort(int[] data) { bGlr>@;-r  
int temp; (!Fu5m=<8  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ~P*{%=a  
if(data[j] SortUtil.swap(data,j,j-1); aQj6XG u  
} H*",'`|-  
} W4nhPH(  
} ;g<y{o"Q3p  
} OgCNq W d-  
SkU9iW(k  
} N#X* 0i"  
i> {0h3Y  
选择排序: @U =~ c9  
gaE8\JSr  
package org.rut.util.algorithm.support; =}SLQdT  
J@ 8OU  
import org.rut.util.algorithm.SortUtil; g}*p(Tp9:  
)k4&S{=  
/** ~!/agLwY  
* @author treeroot  ?H8dyQ5"  
* @since 2006-2-2 ]tmMk7  
* @version 1.0 LvL2[xh%&  
*/ 7<X!Xok  
public class SelectionSort implements SortUtil.Sort { lKS 2OOYC`  
: TqeVf  
/* X*&Thmee  
* (non-Javadoc) FbW$H]C$  
* ;i ?R+T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iD>H{1 h  
*/ NpS =_QeNw  
public void sort(int[] data) { <J.q[fd1*  
int temp; (Hs,Tj  
for (int i = 0; i < data.length; i++) { 'GLpSWL+*  
int lowIndex = i; QEF$Jx  
for (int j = data.length - 1; j > i; j--) { (!9+QXb'  
if (data[j] < data[lowIndex]) { `9|Uu#x  
lowIndex = j; d8p5a C+E  
} qGP}  
} I(Vg  
SortUtil.swap(data,i,lowIndex); j%8 1q  
} &@D\4b,?nm  
} z<9Llew^e  
'7.4!I0'  
} ( F4c0  
 gq} c  
Shell排序: g)IW9q2  
UM^~a$t  
package org.rut.util.algorithm.support; 8<=sUO  
0*AXd=)"*  
import org.rut.util.algorithm.SortUtil; 9 {IDw   
q&LCMnv"P  
/** ylQ9Su>o  
* @author treeroot A}_pJH  
* @since 2006-2-2 *thm)Mn  
* @version 1.0 J.c yb  
*/ @Z<Z//^k  
public class ShellSort implements SortUtil.Sort{ XS.*CB_m_  
vr_Z0]4`C9  
/* (non-Javadoc) ?R4%z2rcW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6<f(Zv? I  
*/ WzBr1 ea{I  
public void sort(int[] data) { Xu|2@?l9  
for(int i=data.length/2;i>2;i/=2){ 8wn{W_5a  
for(int j=0;j insertSort(data,j,i); LbR'nG{J  
} +/hd;s$x  
} y!_8m#n S  
insertSort(data,0,1); B_XX)y%V  
} 6wZ)GLW[  
=RQI5 nHdw  
/** $\PU Y8  
* @param data \(r$f!`  
* @param j F#.ph?W  
* @param i '@HCwEuz  
*/ *<X*)A{C  
private void insertSort(int[] data, int start, int inc) { |n~,{=  
int temp; Mu6DT p~k  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); >G As&\4hs  
} 9q\_UbF  
} CW]Th-xc  
} @R(Op|9  
A>_,tt  
} Q&/WVRD  
i4&V+h"  
快速排序: ]<C]&03))  
1Afy$It/{  
package org.rut.util.algorithm.support; j}6h}E&dEr  
V~do6[(  
import org.rut.util.algorithm.SortUtil; tjx|;m7  
i>dFpJ  
/** jWdZ ]0m  
* @author treeroot g2A#BMe'.$  
* @since 2006-2-2 >B;KpO"+m  
* @version 1.0 ]kF1~kXBe  
*/ S27s Rxfr  
public class QuickSort implements SortUtil.Sort{ QXgfjo  
u^W!$OfZpp  
/* (non-Javadoc) ^sqzlF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M0`1o p1  
*/ [8K :ml  
public void sort(int[] data) { Sf@xP.d  
quickSort(data,0,data.length-1); dqO]2d  
} =r3g:j/>q  
private void quickSort(int[] data,int i,int j){ OU!."r`9  
int pivotIndex=(i+j)/2; -"?~By}<C  
file://swap l+X\>,  
SortUtil.swap(data,pivotIndex,j); d ,.=9  
]EG8+K6  
int k=partition(data,i-1,j,data[j]); A8Km8"  
SortUtil.swap(data,k,j); 4vCUVo r  
if((k-i)>1) quickSort(data,i,k-1); XWq"_$&LF  
if((j-k)>1) quickSort(data,k+1,j); d1'= \PYr  
5hTScnL%  
} `7[!bCl  
/** $9:  @M.  
* @param data O2"V'(  
* @param i ew]G@66  
* @param j 7nP{a"4_  
* @return W_,7hvE?"H  
*/ KL$>j/qT  
private int partition(int[] data, int l, int r,int pivot) { }w8yYI  
do{ zL'S5'<F|  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); N>1d]DrQR  
SortUtil.swap(data,l,r); ef/43+F^x  
} >Psq" Xj  
while(l SortUtil.swap(data,l,r); a2/Mf   
return l; fzvyR2 I  
} Z'Pe%}3  
#rNc+  
} UT[{NltH  
$xcZ{C  
改进后的快速排序: {L [   
{JF"PAS7  
package org.rut.util.algorithm.support; 'yV*eG?^&  
]q4(%Q  
import org.rut.util.algorithm.SortUtil; VE}r'MBk  
r3KNRr@  
/** ai; Q,Vy  
* @author treeroot Qqk(,1u  
* @since 2006-2-2 iSg0X8J)  
* @version 1.0 Q{an[9To~P  
*/ T8x8TN"  
public class ImprovedQuickSort implements SortUtil.Sort { p(K ^Zc  
tmoaa!yRnT  
private static int MAX_STACK_SIZE=4096; };<?W){!H  
private static int THRESHOLD=10; gQJLqs"F  
/* (non-Javadoc) ;zV<63tW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uX]]wj-R3  
*/ <K,X5ctM}  
public void sort(int[] data) { eZ-fy,E  
int[] stack=new int[MAX_STACK_SIZE]; @u: `  
w~Nat7nD  
int top=-1; Cpy&2o-%v  
int pivot; TQ0ZBhd  
int pivotIndex,l,r; N Z ,}v3  
PN:`SWP  
stack[++top]=0; .k +>T*c{  
stack[++top]=data.length-1; r adP%W-U  
UBk:B  
while(top>0){ c;06>1=wP5  
int j=stack[top--]; OK YbEn#  
int i=stack[top--]; %d%?\jVb  
)VqPaKZl  
pivotIndex=(i+j)/2; E'5KJn;_7  
pivot=data[pivotIndex]; 3d4A~!Iz  
O'{kNr{u  
SortUtil.swap(data,pivotIndex,j); lnLy"f"zV  
e4tC[6;  
file://partition GlRjbNW?Q  
l=i-1; b;#_?2c  
r=j; )jg*u}u 0  
do{ \7pEn  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ^:}C,lIrG  
SortUtil.swap(data,l,r); y6x./1Nb}<  
} FK94CI  
while(l SortUtil.swap(data,l,r); `!(%R k  
SortUtil.swap(data,l,j); aw~h03R_Z  
*::.Uo4O  
if((l-i)>THRESHOLD){ \okv}x^L=Z  
stack[++top]=i; a|.IAxJ  
stack[++top]=l-1; kqxq'Aq)d  
} @^  *62  
if((j-l)>THRESHOLD){ X%kJ3{  
stack[++top]=l+1; sUK|*y  
stack[++top]=j; |]k,0Y3v  
} CDsl)  
noEl+5uY  
} V0W4M%  
file://new InsertSort().sort(data); V\opC6*L_e  
insertSort(data); DS>&|zF5l  
} vqO#Z  
/** dNF_ T?E\  
* @param data 4;r,U{uR  
*/ %<[{zd1C-  
private void insertSort(int[] data) { r;* |^>  
int temp; z8]@Gh+ (  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); cAot+N+9|]  
} 0a#v}w^ *  
} pV_zePyOn  
} -.ZP<,?@F  
:N"&o(^  
} .:B>xg~2  
);6f8H@G  
归并排序: ?%Tx% dB  
MPy>< J  
package org.rut.util.algorithm.support; `Syfl^9B  
4z26a  
import org.rut.util.algorithm.SortUtil; ~J> ;l s1  
BHYguS^qz  
/** .XiO92d9  
* @author treeroot vyB{35p$  
* @since 2006-2-2 vw(ecs^C  
* @version 1.0 $p&eS_f  
*/ 3dLqlJ^7B  
public class MergeSort implements SortUtil.Sort{ +`>E_+Mp  
s/s&d pT*  
/* (non-Javadoc) wU<j=lY?f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n:) [ %on  
*/ GKSF(Tnj  
public void sort(int[] data) { +PI}$c-|`  
int[] temp=new int[data.length]; OVU)t]  
mergeSort(data,temp,0,data.length-1); dv3u<XM~  
} VBF:MAA  
G$&jP:2q  
private void mergeSort(int[] data,int[] temp,int l,int r){ \[.qN  
int mid=(l+r)/2; 5|N`:h'9M  
if(l==r) return ; QV:> x#=V  
mergeSort(data,temp,l,mid); SE@TY32T  
mergeSort(data,temp,mid+1,r); OdY9g2y#m  
for(int i=l;i<=r;i++){ 3o/f, }_  
temp=data; R){O]<+  
} 8>6<GdGL<n  
int i1=l; "kBVHy  
int i2=mid+1; ID! S}D  
for(int cur=l;cur<=r;cur++){ Z f<T`'_d  
if(i1==mid+1) =>tkc/aa  
data[cur]=temp[i2++]; b7I0R; Zj  
else if(i2>r) J5HK1  
data[cur]=temp[i1++]; !6RDq`  
else if(temp[i1] data[cur]=temp[i1++]; 3&AJN#c  
else Ba|}$jo  
data[cur]=temp[i2++]; `BG>%#  
} %O"Whe  
} ,+6u6  
ruB D ^-  
} ]&q<O0^'  
\4G9YK-N>  
改进后的归并排序: (l-= /6-  
Zl3e=sg=  
package org.rut.util.algorithm.support; |3!)  
ha=2isq  
import org.rut.util.algorithm.SortUtil; 2ww H3}  
ryh"/lu[B  
/** oVn&L*H   
* @author treeroot Wkjp:`(-$r  
* @since 2006-2-2 .Wy'  
* @version 1.0 C~@m6K  
*/ &Mudu/KTr  
public class ImprovedMergeSort implements SortUtil.Sort { H)gc"aRe;Y  
E?P>s T3B  
private static final int THRESHOLD = 10; 5V =mj+X?  
r~ f;g9I  
/* su1fsoL0  
* (non-Javadoc) ,(K-;Id4  
* S2*sh2-&6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y2s(]# 8  
*/ B>!mD{N  
public void sort(int[] data) { JW^ ${4  
int[] temp=new int[data.length]; c!7WRHJE_a  
mergeSort(data,temp,0,data.length-1); oe 6-F)+  
} ZCc23UwI  
E&y)`>Nq{  
private void mergeSort(int[] data, int[] temp, int l, int r) { Xy=ETV%  
int i, j, k; 3x+=7Mg9  
int mid = (l + r) / 2; J9*;Bqzim  
if (l == r) 7_l Wr  
return; )lS04|s  
if ((mid - l) >= THRESHOLD) `Ng Q>KV!  
mergeSort(data, temp, l, mid); ?#(LH\$l_  
else ]k7%p>c=B  
insertSort(data, l, mid - l + 1); 37a1O>A  
if ((r - mid) > THRESHOLD) z+6PVQ  
mergeSort(data, temp, mid + 1, r); IjRUr\l  
else WH1 " HO  
insertSort(data, mid + 1, r - mid); C5I7\9F)  
iO?^y(phC  
for (i = l; i <= mid; i++) {  'F.P93  
temp = data; W4d32+V  
} Ti_G  
for (j = 1; j <= r - mid; j++) { \X %FM"r  
temp[r - j + 1] = data[j + mid]; ``VE<:2+  
} ZSe30Rl\  
int a = temp[l]; X5 or5v  
int b = temp[r]; ~i?A!  
for (i = l, j = r, k = l; k <= r; k++) { rnhLv$  
if (a < b) { 0LL0\ly]  
data[k] = temp[i++]; dEKu5GI  
a = temp; ?yq=c  
} else { Um4zI>  
data[k] = temp[j--]; uZrp ^  
b = temp[j]; .qZz 'Eq[  
} g1[BrT,  
} ^`";GnH0  
} FVrB#Hw~  
nf"#F@dk  
/** 'hBnV xd&  
* @param data $Uy+]9  
* @param l ^?""'1iuQx  
* @param i U{oM*[  
*/ X5J)1rL  
private void insertSort(int[] data, int start, int len) { Tf]ou5|  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); a7ZufB/  
} sZ&|omN  
} S8/~'<out  
} JP6 Noia  
} A~a 3bCX+"  
mKO~`Wq%@  
堆排序: {zm8`  
A"b31*_  
package org.rut.util.algorithm.support; qQ3Q4R\  
q/I( e  
import org.rut.util.algorithm.SortUtil; ;2`6eyr  
H<i!C|AF  
/** E:**gvfq  
* @author treeroot 8o%Vn'^t  
* @since 2006-2-2 {X(nn.GpC  
* @version 1.0 v8yCf7+"  
*/ {*GBUv5  
public class HeapSort implements SortUtil.Sort{ _h}(j Ed!  
Bi.,@7|>  
/* (non-Javadoc) ty"|yA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S/itK3  
*/ - w{`/  
public void sort(int[] data) { y*G3dWb  
MaxHeap h=new MaxHeap(); wtl3Ex,DO  
h.init(data); =JkPE2mU  
for(int i=0;i h.remove(); diz=|g=w  
System.arraycopy(h.queue,1,data,0,data.length); Wbq0K6X  
} ~'9\y"N1  
 uc<JF=  
private static class MaxHeap{ w4nU86oZYl  
w)rd--9f  
void init(int[] data){ %,1xOl4l  
this.queue=new int[data.length+1]; "t.Jv%0=  
for(int i=0;i queue[++size]=data; !K8Kw W|X  
fixUp(size); 2;wp D2  
} >1}@Q(n/}{  
} o2 ;  
C`@gsF"<7  
private int size=0; 9\zasa  
&E]<dmR  
private int[] queue; O"M2*qiH  
>\7M f@c  
public int get() { V&h{a8xa$  
return queue[1]; E/3i _R  
} 6~!QibA|P  
b8 ^O"oDrp  
public void remove() { }@y(-7t  
SortUtil.swap(queue,1,size--); oH,{'S@q  
fixDown(1); gTS} 'w{  
} nO+-o;DbC  
file://fixdown |AQU\BUj  
private void fixDown(int k) { ` pYyr/  
int j; ?u?Nhf %b  
while ((j = k << 1) <= size) { 3'7]jj  
if (j < size %26amp;%26amp; queue[j] j++; 03/mB2|TF(  
if (queue[k]>queue[j]) file://不用交换 DFXHD,o  
break; ELN1F0TneH  
SortUtil.swap(queue,j,k); )n&6= Li  
k = j; M!/!*,~  
} &RHZ7T  
} '8yCwk  
private void fixUp(int k) { _UA|0a!-  
while (k > 1) { 4 Aj<k  
int j = k >> 1; ]#\De73K   
if (queue[j]>queue[k]) ri`;   
break; E !9(6G4  
SortUtil.swap(queue,j,k); r j.X"  
k = j; YNB7`:  
} j"s7P%  
} S\SYFXUl  
F%:74.]Y  
} l*$~Y0  
.(&w/jR  
} FVxORQI  
i5,yrPF  
SortUtil: HU/2P`DGP  
'~9w<dSB!r  
package org.rut.util.algorithm; SajG67  
L)n_  Q  
import org.rut.util.algorithm.support.BubbleSort; | .gE9'"bv  
import org.rut.util.algorithm.support.HeapSort; Y?qUO2  
import org.rut.util.algorithm.support.ImprovedMergeSort; @#p6C  
import org.rut.util.algorithm.support.ImprovedQuickSort; #tIeI6 Qw  
import org.rut.util.algorithm.support.InsertSort; sVpET  
import org.rut.util.algorithm.support.MergeSort; OQIr"  
import org.rut.util.algorithm.support.QuickSort; Zq~Rkx  
import org.rut.util.algorithm.support.SelectionSort; ;Nw)zS  
import org.rut.util.algorithm.support.ShellSort; p'0X>>$  
iR!]&Oh  
/** c{IL"B6>  
* @author treeroot zm{`+boH<  
* @since 2006-2-2 =axuLP))  
* @version 1.0 t#VX#dJ  
*/ f5Hv![x  
public class SortUtil { >"+ ho  
public final static int INSERT = 1; Q;s {M{u  
public final static int BUBBLE = 2; ]8htL#C  
public final static int SELECTION = 3; kTcW=AXu  
public final static int SHELL = 4; |[0Ijm2  
public final static int QUICK = 5; [1Aoj|  
public final static int IMPROVED_QUICK = 6; 73_=CP" t  
public final static int MERGE = 7; .EReYZO  
public final static int IMPROVED_MERGE = 8; GkIhPn(d  
public final static int HEAP = 9; cMrO@=b;  
{r~=mQ  
public static void sort(int[] data) { ?t<g|H/|6  
sort(data, IMPROVED_QUICK); Na4O( d`  
} }H<Z`3_U%  
private static String[] name={ %^d<go^  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" =CW> ;h]  
}; MGf*+!y,  
+w7U7" xQ  
private static Sort[] impl=new Sort[]{ *8_Dn}u?Jx  
new InsertSort(), 2+/r~LwbK  
new BubbleSort(), dW2 2v!  
new SelectionSort(), >& 4):  
new ShellSort(), Eyz.^)r  
new QuickSort(), )4h|7^6ji  
new ImprovedQuickSort(), A.mFa1lH  
new MergeSort(), @u`W(Ow  
new ImprovedMergeSort(), OFBEJacy  
new HeapSort() }.pqV X{ d  
}; PhPe7^  
cs7^#/3<  
public static String toString(int algorithm){ 2$MoKO x8$  
return name[algorithm-1]; &Z3%UOY  
} 8f1M6GK?  
Bd 0oA )i  
public static void sort(int[] data, int algorithm) { kBLFK3i  
impl[algorithm-1].sort(data); V7}'g6X  
} T`MM<+^G  
*p=enflU  
public static interface Sort { M7T*J>i  
public void sort(int[] data); }]#z0'Aqsu  
} en/h`h]h  
g\?v 5  
public static void swap(int[] data, int i, int j) { Lyf5Yf([-  
int temp = data; op/_ :#&'  
data = data[j]; ^eyVEN  
data[j] = temp; OSfT\8YA  
} ,(-V<>/*.|  
} ~1E!Co  
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