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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。 $-5iwZ  
插入排序: VskyRxfdW3  
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package org.rut.util.algorithm.support; rM=Q.By+\  
9i,QCA  
import org.rut.util.algorithm.SortUtil; YpL{c*M  
/** 6LNm>O  
* @author treeroot _S2QY7/  
* @since 2006-2-2 OHp 121  
* @version 1.0 ^0~?3t5  
*/ 7!<cU  
public class InsertSort implements SortUtil.Sort{ e,`+6qP{  
8'Z9Z*^h#x  
/* (non-Javadoc) c .KpXY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -[0)n{AVvU  
*/ 9oc.`-e\?  
public void sort(int[] data) { Ct$e`H!;  
int temp; DH)@8)C  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); WvUe44&^$  
} .CQ IN]iD  
} C1)TEkc"C  
} 'JKFEUzM  
,F6i5128{  
} 4SY]Q[  
[KVBT;q6  
冒泡排序: <CzH'!FJN  
Tx`;y|  
package org.rut.util.algorithm.support; xh_6@}D2J  
VISNmz2P  
import org.rut.util.algorithm.SortUtil; h+t{z"Ic=  
_Bb/~^  
/** cl^wLC'o  
* @author treeroot 6$ 9n_AS  
* @since 2006-2-2 FTtYzKX(bv  
* @version 1.0 WnvuB.(@3  
*/ -P(q<T2MV'  
public class BubbleSort implements SortUtil.Sort{ 6_^ u}me  
m~(]\  
/* (non-Javadoc) &]16Hb~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jiC;*]n  
*/ D(@#Gd\Z@  
public void sort(int[] data) { u6awcn  
int temp; ]y2(ZTNTs  
for(int i=0;i for(int j=data.length-1;j>i;j--){ RUlM""@b  
if(data[j] SortUtil.swap(data,j,j-1); Ex&f}/F  
} FC.y%P,  
} ) e;)9~  
} 5m=3{lBi  
} 5d*k[fZ  
~+q$TV  
} )?K3nr  
kzbgy)PK3  
选择排序: N$6Rg1  
<&t^&6k  
package org.rut.util.algorithm.support; *jCXH<?R  
M$FQoRwH  
import org.rut.util.algorithm.SortUtil; oz(<e  
j_o6+R k  
/** L/"u,~[  
* @author treeroot 13'tsM&  
* @since 2006-2-2 ,}=x8Xxr  
* @version 1.0 uV#/Lgw{M  
*/ KNic$:i  
public class SelectionSort implements SortUtil.Sort { H8`K?SXU  
dp&4G6Y<A  
/* _o8il3  
* (non-Javadoc) ",B92[}Ar  
* <ij;^ygYD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L @_IGH  
*/ ";J1$a  
public void sort(int[] data) { MV-fDqA(  
int temp; D`o* OlU  
for (int i = 0; i < data.length; i++) { >Yl?i&3n  
int lowIndex = i; j I_TN5  
for (int j = data.length - 1; j > i; j--) { vnw83a%3  
if (data[j] < data[lowIndex]) { 0vqXLFf   
lowIndex = j; w[^s) 1  
} P B.@G,)  
} ^*C8BzcH  
SortUtil.swap(data,i,lowIndex); Ep|W>  
} N32!*TsWs  
} Xjt/ G):L  
W~$YKBW  
} .,)NDG4Q  
'gxSHqeI2  
Shell排序: m*6C *M  
uCB7(<  
package org.rut.util.algorithm.support; : P>Wd3m  
}oIA*:5  
import org.rut.util.algorithm.SortUtil; Du k v[/60  
L~%@pf>  
/** ?lKFcm  
* @author treeroot c:.k2u  
* @since 2006-2-2 '2vZ%C$  
* @version 1.0 y/Fv4<X  
*/ C:\BvPoO  
public class ShellSort implements SortUtil.Sort{ ne4j_!V{Mf  
c |  
/* (non-Javadoc) ]R~K-cN`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NRe{0U}nO  
*/ 494"-F6  
public void sort(int[] data) { R=yn4>I  
for(int i=data.length/2;i>2;i/=2){ ^ a#Vp  
for(int j=0;j insertSort(data,j,i); ~L)9XK^15  
} qn}4PVn4  
} S 'S|k7Lp  
insertSort(data,0,1);  i1v0J->  
} AP&mr1_  
]|ew!N$ar=  
/**  3=@94i  
* @param data Lgw!S~0  
* @param j 0Ah'G  
* @param i N=]2vyh  
*/ xPoI+,  
private void insertSort(int[] data, int start, int inc) { ?s/]k#H  
int temp; .Az' THD}  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); OBp<A+a  
} >_ bH ,/D'  
} c@!%.# |y  
} tfW*(oU  
(!`TO{!6P  
} SC/|o  
Khp`KPxz%  
快速排序: n\Y{ ?x  
&Jw]3U5J  
package org.rut.util.algorithm.support; vDl6TKXcu  
s @\UZ C  
import org.rut.util.algorithm.SortUtil; R3=PV{`M  
z2p@d1  
/** F*Lm=^:  
* @author treeroot !jZXh1g%  
* @since 2006-2-2 :=9?XzCC  
* @version 1.0 Z<+Ipj&  
*/ $KDH"J  
public class QuickSort implements SortUtil.Sort{ ^PHWUb+``  
rBR,lS$4  
/* (non-Javadoc) QfqosoP\D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?VVtEmIN  
*/ V}de|=  
public void sort(int[] data) { L9L!V"So1k  
quickSort(data,0,data.length-1); ZmM/YPy  
} M;s r1C  
private void quickSort(int[] data,int i,int j){ rfj>/?8!@  
int pivotIndex=(i+j)/2; Wl!|+-  
file://swap 8&T6  
SortUtil.swap(data,pivotIndex,j); #{97<sU\  
[wKnJu  
int k=partition(data,i-1,j,data[j]); Ej |rf Y  
SortUtil.swap(data,k,j); k4WUfL d  
if((k-i)>1) quickSort(data,i,k-1); G+Gd ;`4  
if((j-k)>1) quickSort(data,k+1,j); ^B)iBf Z  
@nIoYT='  
} c*iZ6j"iI  
/** E"8cB]`|8  
* @param data x""gZzJ$L  
* @param i 4@|"1D3  
* @param j )L^GGy8w  
* @return >SS YYy  
*/ f]N.$,:$  
private int partition(int[] data, int l, int r,int pivot) { A^\A^$|O6  
do{ vd0;33$L  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); fyb:eO}  
SortUtil.swap(data,l,r); %qN_<W&Ze  
} QPL6cU$&R  
while(l SortUtil.swap(data,l,r); qyA%_;ReMY  
return l; S(bYN[U  
} R 1CoS6  
(~}P.?C8  
} u;-_%?  
>b6!*Lrhs  
改进后的快速排序: M}jF-z  
j%7N\Vb  
package org.rut.util.algorithm.support; 2>bTcud>  
dS+/G9X^  
import org.rut.util.algorithm.SortUtil; km%c0:  
W Z!?O0.A  
/** fMGL1VN  
* @author treeroot R8Kj3wp  
* @since 2006-2-2 pb>TUKvT&  
* @version 1.0 -> $]`h"  
*/ |@Cx%aEKU  
public class ImprovedQuickSort implements SortUtil.Sort { 4V2}'/|[  
H NFG:t9  
private static int MAX_STACK_SIZE=4096; QJeL&mf  
private static int THRESHOLD=10; 2hD(zUSy  
/* (non-Javadoc) )sONfn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4Z'/dI`  
*/ !xqy6%p  
public void sort(int[] data) { ^( w%m#  
int[] stack=new int[MAX_STACK_SIZE]; j@7%%   
3e)W_P*0?  
int top=-1; bSG}I|  
int pivot; f1Az|h  
int pivotIndex,l,r; D'F j"&LK  
8 ztVv   
stack[++top]=0; 7? 1[sPM  
stack[++top]=data.length-1; -[h2fqu1  
nBN+.RB:(  
while(top>0){ -VC k k  
int j=stack[top--]; j=q*b Qr  
int i=stack[top--]; t\\oG H  
\sSt _|+  
pivotIndex=(i+j)/2; 6k4ZzQ}  
pivot=data[pivotIndex]; IasWm/  
x>C_O\  
SortUtil.swap(data,pivotIndex,j); 80'!XKSP  
:kQ%Mj>  
file://partition t)p . $  
l=i-1; B'AU~#d  
r=j; [. rULQl  
do{ o0Z~9iF&  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); cZb5h 9  
SortUtil.swap(data,l,r); )R+26wZ|n*  
} 1M={8}3  
while(l SortUtil.swap(data,l,r); oe4r_EkYwW  
SortUtil.swap(data,l,j); z1AYXW6F  
r;7&U<j~Z  
if((l-i)>THRESHOLD){ WDF;`o*3  
stack[++top]=i; |/YwMBi  
stack[++top]=l-1; j#f7-nHyz8  
} E!s?amM4  
if((j-l)>THRESHOLD){ c}-WK*v  
stack[++top]=l+1; Z=I+_p_G  
stack[++top]=j; cns~)j~  
} ^e~m`R2fHh  
9kO}054  
} SK]"JSY`  
file://new InsertSort().sort(data); c %f'rj  
insertSort(data); &tjv.t  
} 32S5Ai@Cd"  
/** 8q"C=t7  
* @param data aCZ7G % Y  
*/ -Uo"!o>x|  
private void insertSort(int[] data) { 3 {OZdl|  
int temp; o-ee3j.  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); QcN$TxU>  
} *[ww;  
} *?`<Ea  
} {0IC2jE  
:9.QhY)D  
} ?AlTQL~c  
gwQk M4  
归并排序: bkSI1m3  
Mv1V Vk  
package org.rut.util.algorithm.support; %gbvX^E?  
][[\!og  
import org.rut.util.algorithm.SortUtil; >$/PfyY7@#  
dFw>SYrpu  
/** VM"z6@  
* @author treeroot })TXX7[h  
* @since 2006-2-2 a'prlXr\4  
* @version 1.0 -+H?0XN  
*/ nu!tk$Q  
public class MergeSort implements SortUtil.Sort{ [+_0y[~,tB  
s4kkzTnXE3  
/* (non-Javadoc) Rct=v DU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l6y*SW5+  
*/ =e!o  
public void sort(int[] data) { ](tv`1A,Wd  
int[] temp=new int[data.length]; w`a(285s)i  
mergeSort(data,temp,0,data.length-1); iL\eMa  
} t9Y?0O}/  
lr-:o@q{  
private void mergeSort(int[] data,int[] temp,int l,int r){ NkYU3[m$v  
int mid=(l+r)/2; )m4O7'2G  
if(l==r) return ; LE>b_gQ$ 2  
mergeSort(data,temp,l,mid); A DW>  
mergeSort(data,temp,mid+1,r); QmRE<i  
for(int i=l;i<=r;i++){ go[(N6hN  
temp=data; qR>"r"Fq  
} jxdxIkAHZc  
int i1=l; u''~nSR3&  
int i2=mid+1; r-]HmY x  
for(int cur=l;cur<=r;cur++){ =j$!N# L  
if(i1==mid+1) 4Px  
data[cur]=temp[i2++]; lMW4SRk1C  
else if(i2>r) GJB= 5nE  
data[cur]=temp[i1++]; 0//B+.#  
else if(temp[i1] data[cur]=temp[i1++]; S-D=-{@  
else }ki}J>j|f  
data[cur]=temp[i2++]; !5escR!\D  
} [ta3sEPjs  
}  d(>  
yD n8{uI  
} &8^ch,+pD  
w\f>.N  
改进后的归并排序: YnLwBJ2i  
6;^ e  
package org.rut.util.algorithm.support; BMlu>,  
`*to( )  
import org.rut.util.algorithm.SortUtil; xO nW~Z  
(RtjD`e}  
/** \'AS@L"Wj^  
* @author treeroot ]0yYMnqvr  
* @since 2006-2-2 ))z1T8  
* @version 1.0 w\PCBY=  
*/ &GetRDr  
public class ImprovedMergeSort implements SortUtil.Sort { .gS x`|!  
{ 95u^S=  
private static final int THRESHOLD = 10; MaX:o GF,  
rt5eN:'qY  
/* ^3:y<{J  
* (non-Javadoc) 3jG #<4;J  
* Uq8=R)1<|d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *wOuw@09  
*/ *gxo! F}  
public void sort(int[] data) { 7:>VH>?D  
int[] temp=new int[data.length]; RaNz)]+7`  
mergeSort(data,temp,0,data.length-1); y_Tc$g~  
} 5_}e?T&s  
<m|\#Jw_V  
private void mergeSort(int[] data, int[] temp, int l, int r) { !^ /Mn  
int i, j, k; |8s)kQ4$  
int mid = (l + r) / 2; 0/F/U=Z!  
if (l == r) },=0]tvZG#  
return; cIIt ;q[  
if ((mid - l) >= THRESHOLD) lv* fK  
mergeSort(data, temp, l, mid); /#,3JU$w  
else   ps*dO  
insertSort(data, l, mid - l + 1); {ta0dS;1  
if ((r - mid) > THRESHOLD) g[,1$39Z|@  
mergeSort(data, temp, mid + 1, r); =CE(M},d  
else K[XFJ9  
insertSort(data, mid + 1, r - mid); ~GWn>  
<%2A, Vz"  
for (i = l; i <= mid; i++) { _E{hB  
temp = data; q Pc"A!-i  
} b(Ev:  
for (j = 1; j <= r - mid; j++) { L,XWX8  
temp[r - j + 1] = data[j + mid]; H$/r{gfg^  
} +gQn,HX  
int a = temp[l]; sPee" 9%,  
int b = temp[r]; "^~>aVuXf  
for (i = l, j = r, k = l; k <= r; k++) { {Y%X  
if (a < b) { Pkm3&sW  
data[k] = temp[i++]; INyakAmJ}-  
a = temp; B>11  
} else { -cjwa-9 ~  
data[k] = temp[j--]; K`9ph"(Z  
b = temp[j]; Use`E  
} \y-Lt!}  
} l1|z; $_z  
} 4gTD HQP  
=/k*w#j  
/** bIP'(B#1K  
* @param data N|,6<|  
* @param l r2EIhaGF;  
* @param i %#.H FK  
*/ 1!x-_h}  
private void insertSort(int[] data, int start, int len) { rsp?N{e  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Om% 9 x  
} '~^3 =[Z  
} BVx: JiA  
} 7kBULeBn|  
} V01-n{~G  
%}U-g"I  
堆排序: iB Ld*B|#K  
Kf XE=v{t  
package org.rut.util.algorithm.support; \(lt [=  
HR85!S`  
import org.rut.util.algorithm.SortUtil; /"t*gN=wrF  
^AWM/aY  
/** <y(uu(c  
* @author treeroot Z#wmEc.}C  
* @since 2006-2-2 5Pis0fa  
* @version 1.0 qY24Y   
*/ XD5z+/F<"0  
public class HeapSort implements SortUtil.Sort{ Bv^{|w  
Xj;nh?\u  
/* (non-Javadoc) $1N_qu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m8Q6ESg<*u  
*/ =Tf uwhV  
public void sort(int[] data) { Vwp fkD`  
MaxHeap h=new MaxHeap(); R{~Yh.)~  
h.init(data); 8>TDrpT}  
for(int i=0;i h.remove(); X[:&p|g]  
System.arraycopy(h.queue,1,data,0,data.length); <_@ S@t)  
} Ed3 *fY  
b$P=rIB  
private static class MaxHeap{ .~0A*a  
!<3(+H  
void init(int[] data){ L  &F0^  
this.queue=new int[data.length+1]; 3u7^*$S  
for(int i=0;i queue[++size]=data; C+-xC~  
fixUp(size); { Slc6$  
} Int 6xoz  
} B*A{@)_  
y; Up@.IG  
private int size=0; p]uwGWDI  
`Td0R!  
private int[] queue; 95;q ] =U  
ajuwP1I  
public int get() { S(jbPQT  
return queue[1]; Bry\"V"'g  
} [k(oQykq  
N=&~3k  
public void remove() { 89:Ys=  
SortUtil.swap(queue,1,size--); r{.DRbn  
fixDown(1); -tWkN^j8+  
} oJy]n9  
file://fixdown 4f<%<Z  
private void fixDown(int k) { +]/_gz  
int j; T_O\L[]p*  
while ((j = k << 1) <= size) { QT/TZ:  
if (j < size %26amp;%26amp; queue[j] j++; !']=7It{  
if (queue[k]>queue[j]) file://不用交换 zJS,f5L6)  
break; O:3pp8  
SortUtil.swap(queue,j,k); s8 .OL_e  
k = j; (Vglcj  
} T<06y3sN  
} FMB\$(g  
private void fixUp(int k) { Fxy-_%a  
while (k > 1) { ,JyE7h2%i  
int j = k >> 1; 1 ry:Z2  
if (queue[j]>queue[k]) C)/uX5  
break; t0p^0   
SortUtil.swap(queue,j,k); ~sk;6e)(2  
k = j; =1fO"|L  
} 0f/=C9L  
} a02;Zl  
g4 _DEBh  
} I&qT3/SVI  
0\O*\w?  
} {.O Bcx  
ZurQr}  
SortUtil: }OgzSnR  
7(lR$,bE;=  
package org.rut.util.algorithm; \2)a.2mAz  
Z{7lyEzBg  
import org.rut.util.algorithm.support.BubbleSort; fQc2K|V  
import org.rut.util.algorithm.support.HeapSort; " & 'Jw  
import org.rut.util.algorithm.support.ImprovedMergeSort; o&)O&bNJ  
import org.rut.util.algorithm.support.ImprovedQuickSort; Es6b~ #  
import org.rut.util.algorithm.support.InsertSort; r 11:T3  
import org.rut.util.algorithm.support.MergeSort; Dp!3uR ']p  
import org.rut.util.algorithm.support.QuickSort; |3W\^4>,  
import org.rut.util.algorithm.support.SelectionSort; fg"@qE-;  
import org.rut.util.algorithm.support.ShellSort; ^%wj6  
c)gG  
/** gsd9QW  
* @author treeroot _;",7bT80  
* @since 2006-2-2 &-W5 T?Sl  
* @version 1.0 w~@.&  
*/ FCTz>N^p  
public class SortUtil { %Uybp  
public final static int INSERT = 1; ik02Q,J  
public final static int BUBBLE = 2; a(&!{Y1bt  
public final static int SELECTION = 3; Z<6xQTx  
public final static int SHELL = 4; mz@`*^7?  
public final static int QUICK = 5; JCZ"#8M3  
public final static int IMPROVED_QUICK = 6; /WXy!W30<  
public final static int MERGE = 7; rRyBGEj  
public final static int IMPROVED_MERGE = 8; "| w..%Wc  
public final static int HEAP = 9; j J6Yz  
HubSmbS1  
public static void sort(int[] data) { -=,%9r  
sort(data, IMPROVED_QUICK); QIQ }ia  
} -]"=b\Q  
private static String[] name={ |E$Jt-'  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" YgiwtZ5FY  
}; 5\1Z"?  
cY?< W/  
private static Sort[] impl=new Sort[]{ CL%?K<um  
new InsertSort(), J&UFP{)  
new BubbleSort(), bA\TuB  
new SelectionSort(), ^p(t*%LM  
new ShellSort(), )iadu  
new QuickSort(), bHE'R!*  
new ImprovedQuickSort(), d&'z0]mOe  
new MergeSort(), eA9U|&o  
new ImprovedMergeSort(), P lJl#-BO  
new HeapSort() Q# xeu  
}; (.\GI D+i  
wJ-G7V,)  
public static String toString(int algorithm){ 3nv7Uz  
return name[algorithm-1]; iK{q_f\"  
} }T%;G /W  
1BQTvUAA  
public static void sort(int[] data, int algorithm) { rm2"pfs  
impl[algorithm-1].sort(data); /!ZeMY:x  
} *9)7.} uY  
k7P~*ll$  
public static interface Sort { l=*^FK]L`  
public void sort(int[] data); WL-+;h@VQ  
} Zzr+p.  
f" Yj'`6  
public static void swap(int[] data, int i, int j) { =BJ/ZM  
int temp = data; 2pFOC;tl  
data = data[j]; ;SkC[;`J  
data[j] = temp; U~Aw=h5SD  
} , RfU1R  
} ; iQ@wOL]  
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