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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。 k8@bQ"#b  
插入排序: pp(?rE$S  
#p]V?  
package org.rut.util.algorithm.support; g3^:)$m  
#2$wI^O  
import org.rut.util.algorithm.SortUtil; Y3s8@0b3  
/** p=#/H ,2  
* @author treeroot N9s.nu  
* @since 2006-2-2 E1dhj3+3  
* @version 1.0 U<>@)0~7g!  
*/ hwQ|'^(@O  
public class InsertSort implements SortUtil.Sort{ W]_a_5  
2I& dTxIa  
/* (non-Javadoc) t o8J   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0c1=M|2  
*/ (I(U23A~  
public void sort(int[] data) { b\zq,0%  
int temp; ;uv$>F auk  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +nim47  
} V~Z)^.6  
} {'B(S/Z 7  
} a=x &sz\x  
PR x-0S  
} zAvI f  
wZ69W$,p  
冒泡排序: #<U@SMv  
5wE6gRJ  
package org.rut.util.algorithm.support; Qh6 vH9(D  
x]?V*Jz  
import org.rut.util.algorithm.SortUtil; .*xO/pn  
g_k95k3V'  
/** UH;bg}=8  
* @author treeroot m7Ry FnR2  
* @since 2006-2-2 -dN`Ok<g  
* @version 1.0 /u`Opv&I  
*/ %cDDu$9;  
public class BubbleSort implements SortUtil.Sort{ vb]uO ' l  
R>1oF]w  
/* (non-Javadoc) |9Yx`_DF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r'_#rl  
*/ wZbT*rU  
public void sort(int[] data) { I9rQX9#B  
int temp; gB+CM? LKq  
for(int i=0;i for(int j=data.length-1;j>i;j--){ c* ~0R?  
if(data[j] SortUtil.swap(data,j,j-1); $:1/`m19  
} #pPR>,4  
} %[ *+  
} w@O)b-b|w  
} 6 b?K-)kL  
=CS$c?  
} &gJ@"`r4  
yB=R7E7  
选择排序: e6qIC*C!  
zQt)>Qx_  
package org.rut.util.algorithm.support; AW9%E/{  
rM6S%rS  
import org.rut.util.algorithm.SortUtil; 45iO2W uur  
Z0D&ayzkh^  
/** 2chT^3e  
* @author treeroot @{Fa=".Ch  
* @since 2006-2-2 v&%W*M0q@  
* @version 1.0 {ehYE^%N  
*/ 7~ZG"^k  
public class SelectionSort implements SortUtil.Sort { :0Y.${h  
K;s`  
/* /X#OX 8gb]  
* (non-Javadoc) R`@7f$;wG  
* ^YfAsBs&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K@!hrye  
*/ O8rd*+  
public void sort(int[] data) { {l_D+B;  
int temp; <S;YNHLC  
for (int i = 0; i < data.length; i++) { Q&%gpa ).W  
int lowIndex = i; 7)Tix7:9S;  
for (int j = data.length - 1; j > i; j--) { d4Y[}Fcp+  
if (data[j] < data[lowIndex]) { W=|'&UU Ul  
lowIndex = j; 99]s/KD2yb  
} 0TICv2l!  
} 4"{g{8  
SortUtil.swap(data,i,lowIndex); #-R]HLW*  
} I/v#!`L  
} 6(1 &6|o3  
YhAO  
} 7ruWmy;j  
^<v.=7cL0  
Shell排序: ,5K&f\  
M$f_I +  
package org.rut.util.algorithm.support; Aqg$q* Y  
p!?7;  
import org.rut.util.algorithm.SortUtil; Yx ;j  
miCY?=N`  
/** XoMgb DC  
* @author treeroot 6G-XZko~a  
* @since 2006-2-2 ~Sd,Tu%:  
* @version 1.0 ;[Eso p  
*/ ~wGjr7Wt  
public class ShellSort implements SortUtil.Sort{ gK dNgU  
soKR*gJ,  
/* (non-Javadoc) )coA30YR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6jl{^dI  
*/ [!ZYtp?Hf  
public void sort(int[] data) { y%YP  
for(int i=data.length/2;i>2;i/=2){ l|9'l[}&  
for(int j=0;j insertSort(data,j,i); Xa&:Hg<  
} :b#5 cMUe  
} *y>|  
insertSort(data,0,1); qrt2uE{K  
} =3,Sjme  
`0{qfms  
/** jar?"o  
* @param data y>RqA *J  
* @param j x}reeqn  
* @param i Vr&v:8:wb  
*/ x_H"<-By  
private void insertSort(int[] data, int start, int inc) { 0upZ4eN  
int temp; HI)U6.'  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); uuCVI2|  
} EkN>5).  
} z_z '3d.r7  
} >rh<%55P`  
!}xRwkN  
} 2TaHWw<A  
`R$bx 64  
快速排序: .+^o{b  
23q2u6.F`  
package org.rut.util.algorithm.support; "M]`>eixL  
e9B$"_ &2  
import org.rut.util.algorithm.SortUtil; [@s5v  
81wmKqDEs  
/** vF@.B M>  
* @author treeroot  +!wkTrV  
* @since 2006-2-2 =E8Kacu%  
* @version 1.0 b55G1w  
*/ ;[Hrpl S  
public class QuickSort implements SortUtil.Sort{  q0\$wI  
W8!8/ IZbN  
/* (non-Javadoc) $I /RN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q $>SYvW  
*/ wtGb 3D"am  
public void sort(int[] data) { +Nka,C^O"  
quickSort(data,0,data.length-1); 0+S'i82=M  
} rX&?Xi1JeV  
private void quickSort(int[] data,int i,int j){ /p@0Q [E  
int pivotIndex=(i+j)/2; u\UI6/  
file://swap I~c}&'V  
SortUtil.swap(data,pivotIndex,j); WJ]g7!Ks  
VH.}}RS%  
int k=partition(data,i-1,j,data[j]); >[g'i+{  
SortUtil.swap(data,k,j); S'v UxOAo  
if((k-i)>1) quickSort(data,i,k-1); Al]z =  
if((j-k)>1) quickSort(data,k+1,j); C6b(\#g(  
SCMZ-^b  
} \Ng[lN  
/** H0mDs7  
* @param data _]=, U.a=/  
* @param i rHgrC MW  
* @param j K+c>Cj}H  
* @return oRCD8b?  
*/ cGjkx3l*  
private int partition(int[] data, int l, int r,int pivot) { O<w7PS  
do{ 6~q"#94  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); woK?td|/  
SortUtil.swap(data,l,r); 2E3x=  
} Q|cA8Fn  
while(l SortUtil.swap(data,l,r); !GVxQll[f  
return l; z3-AYQ.H  
} q0 8  
Z7R+'OC  
} 93#wU})  
%bUpVyi!(  
改进后的快速排序:  WR"p2=  
R2[!h1nZ  
package org.rut.util.algorithm.support; =").W\,  
KHXnB  
import org.rut.util.algorithm.SortUtil; N DV_/BI  
FKB)o7  
/** L"!BN/i_  
* @author treeroot sQe>LNp,G  
* @since 2006-2-2 LHP?!rO0  
* @version 1.0 h9J  
*/ uw@|Y{(K r  
public class ImprovedQuickSort implements SortUtil.Sort { mCx6$jz  
zHCz[jlrMq  
private static int MAX_STACK_SIZE=4096; sWnU*Q  
private static int THRESHOLD=10; l=JK+uZ  
/* (non-Javadoc) OC[(Eq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I*K~GXWs#  
*/ c =i6  
public void sort(int[] data) { hY Nb9^  
int[] stack=new int[MAX_STACK_SIZE]; bx<7@  
mWM!6"  
int top=-1; XX(;,[(_  
int pivot; C zvi':  
int pivotIndex,l,r; }KHdlhD  
Wc$1Re{z  
stack[++top]=0; SSF4P&  
stack[++top]=data.length-1; *l^%7W rk  
zKk2>.  
while(top>0){ @YTZnGG*  
int j=stack[top--]; f/qG:yTV`  
int i=stack[top--]; Ofg-gCF8  
I(Yyg,1Z  
pivotIndex=(i+j)/2; f"5vpU^5*  
pivot=data[pivotIndex]; cv["Ps#;`W  
|ldRs'c{  
SortUtil.swap(data,pivotIndex,j); y(8AxsROp  
l8hOryB&  
file://partition cf0D q~G  
l=i-1; u-7/4Y)c  
r=j; 6F3#Rxh  
do{ !}^ {W)h[  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); y8un&LP  
SortUtil.swap(data,l,r); pemb2HQ'4j  
} @vaK-&|#$  
while(l SortUtil.swap(data,l,r); 7 0:a2m  
SortUtil.swap(data,l,j); / %U+kW  
9_F2nmEv  
if((l-i)>THRESHOLD){ PDo%ob\Ym  
stack[++top]=i; g%Ap<iT  
stack[++top]=l-1; \qqt/  
} &la;Vu"dp  
if((j-l)>THRESHOLD){ ?8n`4yO0  
stack[++top]=l+1; Pz1pEyuL  
stack[++top]=j; A@ EeX4N  
} >T4.mB7+>  
=?3D:k7z  
} s7<x~v+^  
file://new InsertSort().sort(data); 70L{u+wIy  
insertSort(data); @%K@oDL  
} B&yb%`9],W  
/** :'!,L0I|t  
* @param data W^q;=D6uh  
*/ (yCF pb  
private void insertSort(int[] data) { D`LcL|nmH  
int temp; W@1Nit-R  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); V 3-5:z  
} %uyRpG3,  
} QOkPliX  
} -Vk+zEht  
0*q&)  
} k9.2*+vvg  
RUmJ=i'4/  
归并排序: %9xz[Ng  
`Xnu("w)  
package org.rut.util.algorithm.support; -1~bWRYq  
XFPWW,  
import org.rut.util.algorithm.SortUtil; <5A(rDij  
Im1e/F]  
/** 70l"[Y  
* @author treeroot ewSFB< N  
* @since 2006-2-2 z)r)w?A  
* @version 1.0 37Z:WJ?  
*/ Y0=qn'`.  
public class MergeSort implements SortUtil.Sort{ T2 0dZ8{y  
#z)@T  
/* (non-Javadoc) "8aw=3A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^Pf FW  
*/ jAmAT /1  
public void sort(int[] data) { !L+*.k:  
int[] temp=new int[data.length]; GmB7@-[QA%  
mergeSort(data,temp,0,data.length-1); Tz1St{s\  
} _mKO4Atw  
1GVJ3VXt  
private void mergeSort(int[] data,int[] temp,int l,int r){ JGp~A#H&  
int mid=(l+r)/2; oW(p (>  
if(l==r) return ; O2?ye4uq  
mergeSort(data,temp,l,mid); H3}{]&a  
mergeSort(data,temp,mid+1,r); TGGeTtk=  
for(int i=l;i<=r;i++){ J.mEOo!>  
temp=data; Y!v `0z  
} 3HC aZ?Ry'  
int i1=l; [>Kkj;*  
int i2=mid+1; *?7Ie;)  
for(int cur=l;cur<=r;cur++){ Sb+pB58&N  
if(i1==mid+1) hVI $r  
data[cur]=temp[i2++]; Z +@"  
else if(i2>r) eXWiTi@  
data[cur]=temp[i1++]; agN`) F!  
else if(temp[i1] data[cur]=temp[i1++]; IM}T2\tZ}  
else SY_T\ }  
data[cur]=temp[i2++]; |_8- 3  
} Ps(3X@  
} I|,^a|\  
B0NKav  
} ^wCjMi(sj  
|f&)@fUI  
改进后的归并排序: ^)conSm  
'H <?K  
package org.rut.util.algorithm.support; IY?[0S  
(Kd;l &8  
import org.rut.util.algorithm.SortUtil; &!vJ3:  
<7/_Vs)F0  
/** hgX@?WWR  
* @author treeroot &xMR{:  
* @since 2006-2-2 mdR:XuRD"t  
* @version 1.0 2f16 /0J@  
*/ u[dR*o0'  
public class ImprovedMergeSort implements SortUtil.Sort { 1+v&SU  
MbC7`Sp&i  
private static final int THRESHOLD = 10; n;)!N  
[ /w{,+U  
/* k:Sxs+)?1  
* (non-Javadoc) R_:47.qq  
* \@vR*E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i)g=Lew  
*/ RxY ;'NY  
public void sort(int[] data) { ,5HQHo@  
int[] temp=new int[data.length]; /<vbv  
mergeSort(data,temp,0,data.length-1); iXK.QktHw  
} uuHR!  
Wc ]BQn  
private void mergeSort(int[] data, int[] temp, int l, int r) { t/LQ|/xo  
int i, j, k; q3adhY9|)0  
int mid = (l + r) / 2; \R yOexNZ  
if (l == r) S)of.Nq.;  
return; *P_(hG&c  
if ((mid - l) >= THRESHOLD) l9"0Wu@_x  
mergeSort(data, temp, l, mid); Z;=G5O uvQ  
else "qjkw f)\  
insertSort(data, l, mid - l + 1); o8.KakrPP  
if ((r - mid) > THRESHOLD) l7]:b8  
mergeSort(data, temp, mid + 1, r); <61T)7  
else sxIvL7jl  
insertSort(data, mid + 1, r - mid); im|( 4 f  
9&fS<Hk  
for (i = l; i <= mid; i++) { 0m7ANqE[Z  
temp = data; MWl?pG!Y  
} G=/a>{  
for (j = 1; j <= r - mid; j++) { S#6{4x4  
temp[r - j + 1] = data[j + mid]; 0B#9CxU%  
} R)MWO5  
int a = temp[l]; -U~]Bugvh  
int b = temp[r]; 1Y4=D  
for (i = l, j = r, k = l; k <= r; k++) {  P&"8R  
if (a < b) { "{1`~pDj?  
data[k] = temp[i++]; :kz*.1  
a = temp; a|rN %hA4  
} else { {I0b%>r=  
data[k] = temp[j--]; 6&_"dg"  
b = temp[j]; _jg&}HM  
} ["Mq  
} NC'+-P'y  
} 4^cDp!8  
iq2)oC_  
/** {q f gvu  
* @param data @q:v?AO  
* @param l ef8_w6i  
* @param i ]=\vl>W  
*/ qpzzk9ba[  
private void insertSort(int[] data, int start, int len) { u UXj  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); mW~t/$Y$  
} idW=  
} l?Vm/YXb  
} @v{lH&K:;  
} )@+lfIE(l  
IlQNo 1  
堆排序: DT *'r;  
%;ZWYj`]n  
package org.rut.util.algorithm.support; ^f*}]`S  
h!.#r*vV  
import org.rut.util.algorithm.SortUtil; ^*JpdmVhu  
vM )2F  
/** P7ktr?V0a  
* @author treeroot /Iht,@%E  
* @since 2006-2-2 )c|S)iJ7=z  
* @version 1.0 ,{DZvif   
*/ eS)2#=  
public class HeapSort implements SortUtil.Sort{ >SRUC  
r*?rwtFtg  
/* (non-Javadoc) V6l~Aj}/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n.9k<  
*/ #=@H-ZuD7  
public void sort(int[] data) { qZw4"&,j$  
MaxHeap h=new MaxHeap(); #m>Rt~(,S  
h.init(data); FyD^\6/x  
for(int i=0;i h.remove(); VG FWF3s  
System.arraycopy(h.queue,1,data,0,data.length); &%J+d"n(  
} oVi_X98R  
eyq\a'tyB  
private static class MaxHeap{ ybnq;0}$  
w&&uk[Gh/a  
void init(int[] data){ UrAg*v!Qy  
this.queue=new int[data.length+1]; V.<$c1#=$  
for(int i=0;i queue[++size]=data; P(iZGOKUs=  
fixUp(size); CbPCj.MH  
} 2K >tI9);  
} r=57,P(:Ca  
cfZG3 "  
private int size=0; &qR1fbw"  
dzA5l:5  
private int[] queue; RSL%<  
:CH*~o  
public int get() { BP f;!.  
return queue[1]; Xxl>,QUA  
} z3F ^OU   
1X-KuGaD  
public void remove() { ?Q$LIoR  
SortUtil.swap(queue,1,size--); *Nfn6lVB  
fixDown(1); r]!<iw  
} VyRU_<xP  
file://fixdown .-kqt^Gc  
private void fixDown(int k) { agQ5%t#  
int j; "v.]s;g  
while ((j = k << 1) <= size) { *7`N^e  
if (j < size %26amp;%26amp; queue[j] j++; !: e0cV  
if (queue[k]>queue[j]) file://不用交换 &uLxA w  
break; /t "p^9!^  
SortUtil.swap(queue,j,k); }h+_kRQ  
k = j; WW.\5kBl8  
} m>po+7"b  
} y&y(<  
private void fixUp(int k) { 5f54E|vD  
while (k > 1) { &p?Oo^  
int j = k >> 1; Dq T)%a  
if (queue[j]>queue[k]) p(2j7W-/  
break; m~K[+P  
SortUtil.swap(queue,j,k);  eiLtZQ  
k = j; .aRL'1xHl  
} 9&'I?D&8  
} + n1jP<[<N  
%9_wDfw~  
} *%0f^~!G<p  
4SG22$7W  
} )p.+39]{2  
 KR  
SortUtil: \L#BAB6z  
Dl862$_Q  
package org.rut.util.algorithm; K;2]c3T  
JOj\#!\>k0  
import org.rut.util.algorithm.support.BubbleSort; 7f4R5c  
import org.rut.util.algorithm.support.HeapSort; dEXHd@"H  
import org.rut.util.algorithm.support.ImprovedMergeSort; DdI7%?hK  
import org.rut.util.algorithm.support.ImprovedQuickSort; E(G=~>P  
import org.rut.util.algorithm.support.InsertSort; ] =Js5  
import org.rut.util.algorithm.support.MergeSort; S"|sD|xOb  
import org.rut.util.algorithm.support.QuickSort; -t9oL3J  
import org.rut.util.algorithm.support.SelectionSort;  m8rz i:  
import org.rut.util.algorithm.support.ShellSort; Df_W>QC  
1SBc:!2  
/** _/[n/"gn  
* @author treeroot {GF>HHQb  
* @since 2006-2-2 ?KxI|os  
* @version 1.0 h.)2,  
*/ >Kl78w:  
public class SortUtil { -_jV.`t  
public final static int INSERT = 1; >l$vu-k)~4  
public final static int BUBBLE = 2; t\2myR3  
public final static int SELECTION = 3; *$(=I6b  
public final static int SHELL = 4; Q^Ln`zMe  
public final static int QUICK = 5; RJs_ S  
public final static int IMPROVED_QUICK = 6; (PYUfiOf  
public final static int MERGE = 7; FV/xp}nz  
public final static int IMPROVED_MERGE = 8; syh0E= If_  
public final static int HEAP = 9; z(< E %  
$"{V],:T |  
public static void sort(int[] data) { IidZ -Il  
sort(data, IMPROVED_QUICK); Q}jbk9gM5  
} :C42yQAP  
private static String[] name={ ]P0DPea  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 8Gb=aF1  
}; sF;1)7]Pq  
1at$_\{.(  
private static Sort[] impl=new Sort[]{ a73b/_zZ=  
new InsertSort(), Xi5kE'_  
new BubbleSort(), yZ:|wxVY  
new SelectionSort(), \3q{E",\>@  
new ShellSort(), SX}GKu  
new QuickSort(), 1elx~5v1.=  
new ImprovedQuickSort(), Coq0Kzhsab  
new MergeSort(), 4\(;}M-R{  
new ImprovedMergeSort(), dh/:H/k kR  
new HeapSort() kyJv,!};  
}; pb%#`2"  
,|I\{J #C  
public static String toString(int algorithm){ u2<:mu[|P  
return name[algorithm-1]; &3{:h  
} SU# S'  
V`69%35*@  
public static void sort(int[] data, int algorithm) { mUy/lo'4  
impl[algorithm-1].sort(data); *Oz5I  
} y<F$@  
}sy3M rb  
public static interface Sort { MC#bo{Bq3-  
public void sort(int[] data); [ur/`   
} f Jv 0 B*  
F__>`Do l  
public static void swap(int[] data, int i, int j) { NtTLvO6  
int temp = data; `j>qOT  
data = data[j]; !xo@i XL  
data[j] = temp; q\#3G  
} any\}   
} 81W})q8  
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