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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。 9g]%}+D  
插入排序: 54=*vokX_  
-iL:D<!Cb_  
package org.rut.util.algorithm.support; +lxjuEiae  
KD.|oo  
import org.rut.util.algorithm.SortUtil; ERia5HnoD,  
/** <w`EU[y_  
* @author treeroot 'q?Y5@s  
* @since 2006-2-2 eph2&)D}Ep  
* @version 1.0 #nw+U+qL  
*/ kc(m.k!|f\  
public class InsertSort implements SortUtil.Sort{ @S:T8 *~}  
a~ dgf:e`  
/* (non-Javadoc) \&b 9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  TD%&9$F  
*/ /l_u $"  
public void sort(int[] data) { YmOj.Q&  
int temp; m'QG{f  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); .+kg1=s  
} ) J.xQ}g  
} ?5J>]: +ZZ  
} r)#W`A1{A  
9 p{n7.  
} `So/G  
3dlY_z=0  
冒泡排序: D<|$ZuB4  
@Pf9;7,TV  
package org.rut.util.algorithm.support; C+g}+  
RMiDV^.u`  
import org.rut.util.algorithm.SortUtil; }xBDyr63  
KJ:z\N8eo  
/** mPHto-=fB  
* @author treeroot YC')vv3o(  
* @since 2006-2-2 3n)$\aBE  
* @version 1.0 P;o  {t  
*/ :)i,K>y3i  
public class BubbleSort implements SortUtil.Sort{ L]8z6]j*  
1Iy1xiP  
/* (non-Javadoc) W@ &a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T0Xm}i  
*/ /Ry% K4$  
public void sort(int[] data) { >KL=(3:":p  
int temp; (xHu@l!]  
for(int i=0;i for(int j=data.length-1;j>i;j--){ @&Z^WN,x  
if(data[j] SortUtil.swap(data,j,j-1); Qrt\bz h/}  
} ~TsRUT  
} ~ \<$H'  
} QS!Z*vG  
} sOlnc6  
EQ ee5}  
} _dRB=bl"O  
Y!_{:2H8p  
选择排序: rJkJ/9s  
q)L4*O  
package org.rut.util.algorithm.support; ge1. HG  
bXvO+I<  
import org.rut.util.algorithm.SortUtil; )~)l^0X  
r'j88)^  
/** ,|s*g'u  
* @author treeroot g i6s+2  
* @since 2006-2-2 \ c4jGJ  
* @version 1.0 aqN{@|  
*/ +T@BOYhgq  
public class SelectionSort implements SortUtil.Sort { j :B/ FL  
D\&S {  
/* oG1zPspL  
* (non-Javadoc) #jW-&a  
* ^J#*sn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'k[qx}  
*/ d/ ^IL*O  
public void sort(int[] data) { Z8ea)_ {#  
int temp; `6)Qi*Z  
for (int i = 0; i < data.length; i++) { wDh]vH[  
int lowIndex = i; cyJ{AS+  
for (int j = data.length - 1; j > i; j--) { 5m 0\ls\  
if (data[j] < data[lowIndex]) { 2$5">%?  
lowIndex = j; T,/rC{  
} XLt/$Caf  
} I?}jf?!oM  
SortUtil.swap(data,i,lowIndex); @!fUp b  
} bpwA|H%{M  
} NUYKMo1ze  
W+#Q>^Q>  
} 8F8?1  
g~y0,0'j1\  
Shell排序: e9{0hw7  
'c7nh{F  
package org.rut.util.algorithm.support; 9)1Ye  
"a)6g0gw  
import org.rut.util.algorithm.SortUtil; vd[7Pxe  
][S q^5`  
/** t|>zke!'  
* @author treeroot a{T.U-0   
* @since 2006-2-2 :E.a.-  
* @version 1.0 (p%|F`  
*/ i7.8H*z'  
public class ShellSort implements SortUtil.Sort{ :>fT=$i@  
9O3#d  
/* (non-Javadoc) "V>}-G&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [_'A(.  
*/ skcyLIb  
public void sort(int[] data) { bXnUz?1!d  
for(int i=data.length/2;i>2;i/=2){ T o["o!(;z  
for(int j=0;j insertSort(data,j,i); }#ZRi}f2VJ  
} {Ge{@1  
} q~R8<G%YK  
insertSort(data,0,1); Z0L($  
} X,v.1#[  
L\2"1%8Wj  
/** ] ]U)wg  
* @param data epiviCYC  
* @param j S $p>sItO  
* @param i ;_bRq:!j;  
*/ J 4gtm"2)  
private void insertSort(int[] data, int start, int inc) { l}uZxKuYx  
int temp; k9x[( #  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc);  =1Sny7G  
} U*C^g}iA  
} z}MxMx c4h  
} 0 %~~IT}U  
*K|~]r(F?  
} <,)R`90_X6  
BXYHJ  
快速排序: +7gd1^|$e  
OE@[a  
package org.rut.util.algorithm.support; ,H{9`a#+:  
4 Im>2 )  
import org.rut.util.algorithm.SortUtil; qLCNANWnd  
KkCGL*]K  
/** VCWW(Y1Fd  
* @author treeroot n2K1X!E$  
* @since 2006-2-2 G3DgB!  
* @version 1.0 J#$U<`j*G  
*/ (mIjG)4t  
public class QuickSort implements SortUtil.Sort{ A08kwYxiW  
Y%?S:&GH  
/* (non-Javadoc) '[WL8,.Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %V>%AP  
*/ F}}!e.>c  
public void sort(int[] data) { g!XC5*}  
quickSort(data,0,data.length-1); 2Xe1qzvo  
} *S}@DoXS  
private void quickSort(int[] data,int i,int j){ O>h`  
int pivotIndex=(i+j)/2; x-[ItJ% l  
file://swap H{Ewj_L  
SortUtil.swap(data,pivotIndex,j); >/A]C$?3  
M.Yp'Av  
int k=partition(data,i-1,j,data[j]); !h.hJt  
SortUtil.swap(data,k,j); PLkS-B  
if((k-i)>1) quickSort(data,i,k-1); xh2r?K@k>  
if((j-k)>1) quickSort(data,k+1,j); 9vV==A#  
e#*3X4<\K  
} u+j\PWOtm  
/** Or? )Nlg6x  
* @param data I!L J&>  
* @param i +VkL?J  
* @param j qx ki  
* @return EnWv9I<  
*/ w1tM !4r  
private int partition(int[] data, int l, int r,int pivot) { _Ay^v#a  
do{ J9[7AiEd(/  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); dL$ iTSfz"  
SortUtil.swap(data,l,r); /0/ouA>+  
} @:?[R&`  
while(l SortUtil.swap(data,l,r); (p5q MP]L  
return l; !'N@ZZ  
} r]!#v{#.  
Lng. X8D  
} ^.6yzlY  
'V?FeWp  
改进后的快速排序: WK6,K92  
ZPH_s^  
package org.rut.util.algorithm.support; gO8d2?Oh  
dcY(1p)  
import org.rut.util.algorithm.SortUtil; ~3.*b% ,  
Pdf-2 Tx  
/**  4v`/~a  
* @author treeroot m+!.H\  
* @since 2006-2-2 +ALrHFG  
* @version 1.0 Ca'BE#q  
*/ Es+I]o0K  
public class ImprovedQuickSort implements SortUtil.Sort { R$awo/'^  
}>6e-]MHfR  
private static int MAX_STACK_SIZE=4096; x eFx!$3  
private static int THRESHOLD=10; CK[8y&  
/* (non-Javadoc) ycBgr,Ynu<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  $U?]^  
*/ )8C`EPe  
public void sort(int[] data) { nook/7]  
int[] stack=new int[MAX_STACK_SIZE]; $_F_%m"\  
|~5cN m  
int top=-1; q\<l"b z  
int pivot; [e` | <  
int pivotIndex,l,r; %Lh%bqGz  
?+.mP]d_  
stack[++top]=0; +A?P4}  
stack[++top]=data.length-1; A8.noV  
?7Cm+J  
while(top>0){ d'W2I*Zc<  
int j=stack[top--]; UK,bfLPt~  
int i=stack[top--]; //c6vG  
+r!NR?^m  
pivotIndex=(i+j)/2; +\Vw:~e  
pivot=data[pivotIndex]; <<LLEdB  
_{`Z?lt  
SortUtil.swap(data,pivotIndex,j); r\"R?P$y|  
z" tz-~  
file://partition 4tm%F\Izy  
l=i-1; T^;b98*  
r=j; ?w(hPUd!2  
do{ <5G(Y#s/?  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); HK :K~h  
SortUtil.swap(data,l,r); RVA ku  
} %j^QK>%  
while(l SortUtil.swap(data,l,r); 9.(|ri  
SortUtil.swap(data,l,j); eHvUgDt  
Y0g]-B  
if((l-i)>THRESHOLD){ R|*0_!O:[  
stack[++top]=i; QD0x^v8  
stack[++top]=l-1; LN+x!#:e  
} #qVTB@d  
if((j-l)>THRESHOLD){ u)Kiwa  
stack[++top]=l+1; vk E]$4P[$  
stack[++top]=j; C:No ^nH>  
} iT&4;W=72~  
)&T 5 /+  
} %P~;>4i,  
file://new InsertSort().sort(data); '1DY5`i{  
insertSort(data); ?ja%*0 R  
} Lp-$Ie  
/** j~Pw t9G  
* @param data ~8&->?{  
*/ [5' HlHK  
private void insertSort(int[] data) { #C } +  
int temp; e 1XKlgl  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *~GI-h  
} 1c QF(j_  
} Q&PWW#D  
} i. )^}id  
%r.OV_04  
} vfn[&WN]  
EGI$=Y  
归并排序: <D:q4t  
.n+ ;&5  
package org.rut.util.algorithm.support; rb@[ Edj  
JAKs [@:  
import org.rut.util.algorithm.SortUtil; 7]Qxt%7/>  
h-"q <eY"  
/** 9c4p9b!  
* @author treeroot 3pML+Y|ij  
* @since 2006-2-2 c nv%J}wq  
* @version 1.0 E> pr})^w  
*/ 5"40{3  
public class MergeSort implements SortUtil.Sort{ CR.d3!&28  
2HVqJib4Yn  
/* (non-Javadoc) 7;@YR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NUb$PT  
*/ v -)<nox  
public void sort(int[] data) { i@6g9\x+  
int[] temp=new int[data.length]; > .}G[C  
mergeSort(data,temp,0,data.length-1); rtJ@D2Hj^  
} X&aQR[X  
WwoT~O8R  
private void mergeSort(int[] data,int[] temp,int l,int r){ X ]&`"Z]  
int mid=(l+r)/2; E`HA0/  
if(l==r) return ; $ #/8l58  
mergeSort(data,temp,l,mid); h*KDZ+{)  
mergeSort(data,temp,mid+1,r); )CoFRqz<h  
for(int i=l;i<=r;i++){ ubZuvWZ  
temp=data; @G#`uoD  
} /QL<>g  
int i1=l; #p;<X|Hc}8  
int i2=mid+1; %r6_['T  
for(int cur=l;cur<=r;cur++){ Xo(W\Pes  
if(i1==mid+1) $l.8  
data[cur]=temp[i2++]; }Gb^%1%M  
else if(i2>r) ,1|=_M31  
data[cur]=temp[i1++]; wp8-(E^  
else if(temp[i1] data[cur]=temp[i1++]; X`v6gv5qj  
else q4@+Pi)  
data[cur]=temp[i2++]; \QSD*  
} |@b|Q,  
} 2>x[_  
H.n|zGQTB  
} >d .|I&  
S=< ]u  
改进后的归并排序: k-*k'S_  
*2pE39  
package org.rut.util.algorithm.support; JKp@fQT *  
: +^`VLIf  
import org.rut.util.algorithm.SortUtil; /YwwG;1  
"lA$;\&  
/** <;+QK=f  
* @author treeroot )"P.n-aF  
* @since 2006-2-2 _6nza)OFH  
* @version 1.0 h9c7P@29  
*/ m^0*k|9+G  
public class ImprovedMergeSort implements SortUtil.Sort { [A!=Hv_$  
'@hnqcqXq  
private static final int THRESHOLD = 10; 3e;K5qSeo/  
8BS$6Pa  
/* \q-["W34  
* (non-Javadoc) |SJ%Myy  
* 2j>C4Ck  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lg (>n&  
*/ ^=cX L  
public void sort(int[] data) { /oM&29 jy  
int[] temp=new int[data.length]; @M }`nKXM  
mergeSort(data,temp,0,data.length-1); G in  
} [.G~5%974  
<&M5#:u  
private void mergeSort(int[] data, int[] temp, int l, int r) { eLN(NSPoS  
int i, j, k; ,n5 [Y)  
int mid = (l + r) / 2; %%O_:@9x,  
if (l == r) !G ~\9  
return; ?0E-Lac=  
if ((mid - l) >= THRESHOLD) =)6|lz^  
mergeSort(data, temp, l, mid); |TBKsx8  
else Q},uM_" +  
insertSort(data, l, mid - l + 1); s.}:!fBk  
if ((r - mid) > THRESHOLD) );F /P0P  
mergeSort(data, temp, mid + 1, r); M^A;tPw  
else ;}4e+`fF|  
insertSort(data, mid + 1, r - mid); 0ipYXbC  
;{>-K8=>$  
for (i = l; i <= mid; i++) { !3at(+4  
temp = data; z1~U#  
} >\!>CuU  
for (j = 1; j <= r - mid; j++) { kObgoMT<[  
temp[r - j + 1] = data[j + mid]; +Mh9Jf  
} W&k2z,|  
int a = temp[l]; pK2n'4 C  
int b = temp[r]; ?K?v64[  
for (i = l, j = r, k = l; k <= r; k++) { 3D7phq>.q  
if (a < b) { J 9k~cz  
data[k] = temp[i++]; ;6zp,t0  
a = temp; (V~PYf%  
} else { </d&bS  
data[k] = temp[j--]; !;C *Wsp}  
b = temp[j]; W>7o ec  
} QVrMrm+vRv  
} ze%)fZI0f  
} _\xd]~ELj  
QI2T G,  
/** GwVSRI:[N  
* @param data vo DTU]pf  
* @param l =i)k@w_(x  
* @param i n\y%5J+  
*/ PizPsJ|&  
private void insertSort(int[] data, int start, int len) { vN4g#,<  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); nK9A=H'Hc  
} X[c8P7  
} \TBY)_[ {  
} ~\m|pxcj  
} G(~"Zt}?  
ztS'Dp}q<  
堆排序: G?6[K&w  
*m sW4|=^2  
package org.rut.util.algorithm.support; ~FV Z0%+,  
aTy&"  
import org.rut.util.algorithm.SortUtil; _,4f z(  
l0$ +)FKd  
/** e$^O_e  
* @author treeroot ;2;Kq)j_=  
* @since 2006-2-2 OC]_b36v  
* @version 1.0 UI 7JMeV  
*/ DjjG?(1  
public class HeapSort implements SortUtil.Sort{ [sY>ac  
%h%^i   
/* (non-Javadoc) WVf>>E^1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xCV3HnZ  
*/ &?<o692  
public void sort(int[] data) { a[GlqaQy+-  
MaxHeap h=new MaxHeap(); YDyi6x,  
h.init(data); %!HmtpS  
for(int i=0;i h.remove(); /*lSpsBn  
System.arraycopy(h.queue,1,data,0,data.length); t$Z#zx X  
} toEmIa~o6  
Bk 1Q.Un  
private static class MaxHeap{ jn#  
f,Sybf/uHh  
void init(int[] data){ '7{0k{  
this.queue=new int[data.length+1]; }IGr%C(3%  
for(int i=0;i queue[++size]=data; z rt8ze=Su  
fixUp(size); 7b,u|F  
} #IP<4"Hf  
} :r[`bqC;\*  
Ov)rsi  
private int size=0; H0s,tTK8  
Oav^BhUO  
private int[] queue; ge[+/$(1  
t\]CdH`+  
public int get() { XH0R:+s  
return queue[1]; 2Fce| Tn  
} >b0e"eGt  
kG+CT  
public void remove() { M#d_kDMw  
SortUtil.swap(queue,1,size--); ;#!`c gAh  
fixDown(1); G)?O!(_  
} 1k\1U  
file://fixdown L;'+O u  
private void fixDown(int k) { ;{ Y|n_  
int j; fdCsn:  
while ((j = k << 1) <= size) { M,PZ|=V6a  
if (j < size %26amp;%26amp; queue[j] j++; Xt/muV  
if (queue[k]>queue[j]) file://不用交换 _'dsEF  
break; 3Cwqy#X#8  
SortUtil.swap(queue,j,k); _#e='~;  
k = j; 1z$;>+g<  
} Y'Jb@l`$-  
} d;(L@9HHD  
private void fixUp(int k) { ^[8e|,U  
while (k > 1) { ~y^#?;  
int j = k >> 1; s%J|r{F6  
if (queue[j]>queue[k])  vu  YH+  
break; BJk\p.BVN  
SortUtil.swap(queue,j,k); '\ dFhYs{*  
k = j; dLal 15Pb  
} !/['wv@  
} H4 & d,8:m  
ZsUxO%jP  
} ^`\c;!)F<  
vBQ5-00YY=  
} M:nXn7)+  
(ZjIwA9>  
SortUtil: bUp%87<*X  
o'%F*>#v  
package org.rut.util.algorithm; <0R7uH  
or ~o'  
import org.rut.util.algorithm.support.BubbleSort; ,ibI@8;#~'  
import org.rut.util.algorithm.support.HeapSort; ]ODC+q1  
import org.rut.util.algorithm.support.ImprovedMergeSort; 5}~*,_J2Z  
import org.rut.util.algorithm.support.ImprovedQuickSort; }vxb, [#  
import org.rut.util.algorithm.support.InsertSort; q[1H=+  
import org.rut.util.algorithm.support.MergeSort; _$wWKJy9  
import org.rut.util.algorithm.support.QuickSort; o~gduNG#  
import org.rut.util.algorithm.support.SelectionSort; * C~  
import org.rut.util.algorithm.support.ShellSort; .?_wcp=  
z>&Py(  
/** )Bl% {C  
* @author treeroot X!CLOHVA a  
* @since 2006-2-2 zY\v|l<T  
* @version 1.0 X`:(-3T  
*/ }`IN5NdYp  
public class SortUtil { L1Fn;nR  
public final static int INSERT = 1; &EmxSYL>  
public final static int BUBBLE = 2;  -deY,%  
public final static int SELECTION = 3; _w^p~To^  
public final static int SHELL = 4; o]MQ)\ r  
public final static int QUICK = 5; 5gGYG]*l  
public final static int IMPROVED_QUICK = 6; t_3)}  
public final static int MERGE = 7; :{LVS nG  
public final static int IMPROVED_MERGE = 8; EFf<| v  
public final static int HEAP = 9; ZGzrh`j{-  
gUL`)t\}*  
public static void sort(int[] data) { 8:$kFy\A'  
sort(data, IMPROVED_QUICK); !o:RIwS3  
} OWB^24Z&3  
private static String[] name={ X||o iqbY  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" h}z^NX  
}; 1 < <`T%&  
i{T0[\4  
private static Sort[] impl=new Sort[]{ y$*Tbzp  
new InsertSort(), -G;4['p  
new BubbleSort(), !F;W#Gc  
new SelectionSort(), ;{q7rsE  
new ShellSort(), A7+eWg{  
new QuickSort(), 5p94b*l  
new ImprovedQuickSort(), 6N~~:Gt  
new MergeSort(), z6|P]u  
new ImprovedMergeSort(), M)I&^mm39  
new HeapSort() eAu3,qoM  
}; k2<VUeW5  
*FK!^Y  
public static String toString(int algorithm){ (IIOKx_  
return name[algorithm-1]; "]*0)h_  
} SG8|xoL  
B:qZh$YN  
public static void sort(int[] data, int algorithm) { I#Iu:,OT  
impl[algorithm-1].sort(data); T9RR. ng  
} qK.8^{b  
2ztP'  
public static interface Sort { GLnj& Ve  
public void sort(int[] data); 2Ev~[Hb.  
} 22}J.'Zb  
 Cj_cu  
public static void swap(int[] data, int i, int j) { PM7*@~.  
int temp = data; #kA/,qyM  
data = data[j]; E:&=A 4 %  
data[j] = temp; Z7K ;~*  
} Ga.a"\F.V  
} ,hT t]w  
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