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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。 ,d)!&y  
插入排序: h|yv*1/|  
AR`X2m '  
package org.rut.util.algorithm.support; 7A8jnq7m/  
eHF#ME  
import org.rut.util.algorithm.SortUtil; I8gGP'  
/** eJilSFp1  
* @author treeroot 5g&.P\c{  
* @since 2006-2-2 PP/M-Jql)  
* @version 1.0 AnU,2[(  
*/ gQ.yNe  
public class InsertSort implements SortUtil.Sort{ ~ 6 1?nu  
jU)r~QhN  
/* (non-Javadoc) _zI9 5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QOlm#S  
*/ " ^ydoRZ  
public void sort(int[] data) { H!4!1J.=xw  
int temp; 5xwztcR-  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Vky~yTL)\  
} UMm<HQ  
} 3qiE#+dC  
} a-4'jT:  
Ah='E$t  
} +Qt=N6>  
/>Tyiy]2uu  
冒泡排序: i]Lt8DiRq  
`/f9 mn  
package org.rut.util.algorithm.support; C 6Bh[:V&  
2uZ <q?=  
import org.rut.util.algorithm.SortUtil; :1q+[T/ @  
A1{P"p!  
/** jiYYDGs77  
* @author treeroot %h g=@7,|  
* @since 2006-2-2 ~1`.iA  
* @version 1.0 SOE#@{IXBa  
*/ a)MjX<y  
public class BubbleSort implements SortUtil.Sort{ )W:`Q&/G  
YM 0f_G=  
/* (non-Javadoc) ?Vb=W)Es  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JHwkLAuz  
*/ &1%W-&bc6  
public void sort(int[] data) { |rH;}t|un  
int temp; :t?9$ dL  
for(int i=0;i for(int j=data.length-1;j>i;j--){ -. L)-%wIV  
if(data[j] SortUtil.swap(data,j,j-1); N $M#3Y;  
} Z%D*2wm4  
} Z_}vjk~s  
} 7e/Uc!&*  
} 1B+MCt4  
Zd1+ZH  
} /[VafR!  
! o:m*:  
选择排序: M-K<w(,X  
'C1=(PE%`  
package org.rut.util.algorithm.support; ~&CaC  
K0@2>nR  
import org.rut.util.algorithm.SortUtil; G`ZpFg0Y  
ve.iyr  
/** 8U/q3@EC  
* @author treeroot ^*`{W4e]  
* @since 2006-2-2 bEV 9l  
* @version 1.0 Z 7t0=U  
*/ mAhtC*  
public class SelectionSort implements SortUtil.Sort { 7fLLV2  
mk~i (Ee  
/* K%Mm'$fTw  
* (non-Javadoc) WiH%URFB  
* a^ <  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S]KcAz(fX  
*/ Cmm"K[>Rx  
public void sort(int[] data) { d;Z<")  
int temp; >T%Jlj3ZG  
for (int i = 0; i < data.length; i++) { ~cz] Rhq  
int lowIndex = i; Dn) =V.  
for (int j = data.length - 1; j > i; j--) { &9$0v"`H  
if (data[j] < data[lowIndex]) { fa=#S  
lowIndex = j; SDcxro|8i  
} ZwAX+0  
} yHurt>8b[  
SortUtil.swap(data,i,lowIndex); y<m{eDV7  
} S6B(g_D|  
} k;3Bv 6  
GfUIF]X  
} (sW:^0p  
;DL|%-%;$r  
Shell排序: b,Ed}Ir  
/R^HRzTO  
package org.rut.util.algorithm.support; ! W$ u~z  
') 5W  
import org.rut.util.algorithm.SortUtil; IPbdX@FeV  
rFM`ne<zh  
/** Cnd*%CPZ  
* @author treeroot Z@nM\/vLA  
* @since 2006-2-2 )F0 _V 4  
* @version 1.0 tv+q~TFB=Z  
*/ i/Q*AG>b  
public class ShellSort implements SortUtil.Sort{ DdJxb{y7  
z_*]joL  
/* (non-Javadoc) JS642T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e!l!T@ pf  
*/ aa_&WHXkt  
public void sort(int[] data) { hQ i[7r($8  
for(int i=data.length/2;i>2;i/=2){ y%|nE((  
for(int j=0;j insertSort(data,j,i); &O#a==F!(  
} yv 9~  
} n]}+ :  
insertSort(data,0,1); UIvTC S  
} n4 KiC!*i0  
-WB? hmx  
/** QBR9BR  
* @param data )?%FU?2jrn  
* @param j Z_iu^ Q  
* @param i $G"PZ7  
*/ .bB_f7TH.  
private void insertSort(int[] data, int start, int inc) { {DI_i +2  
int temp; f?dNTfQ3mi  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ":"QsS#*"#  
} 'AF2:T\  
} #~Lh#@h  
} rnIv|q6@  
<.HHV91  
} kN`[Q$B  
0(Vbji  
快速排序: Z9i,#/  
L4zSro:Si  
package org.rut.util.algorithm.support; ldM [8  
Oe'Nn250  
import org.rut.util.algorithm.SortUtil; c#OZ=`  
S&6}9r  
/** .hg<\-:_  
* @author treeroot H #J"'  
* @since 2006-2-2 5w gtc~  
* @version 1.0 Q#}} 1}Ja  
*/ (i|`PA  
public class QuickSort implements SortUtil.Sort{ -vGyEd7  
+AZ=nMgW  
/* (non-Javadoc) ,M>W)TSH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H'<9;bD -  
*/ 3rZFN^  
public void sort(int[] data) { Fw+JhI VP  
quickSort(data,0,data.length-1); hAOXOj1  
} V(L~t=k$  
private void quickSort(int[] data,int i,int j){ k!xi (l<C  
int pivotIndex=(i+j)/2; zek\AQN  
file://swap ,4NvD2Y  
SortUtil.swap(data,pivotIndex,j); 7t\kof  
"ltvD\  
int k=partition(data,i-1,j,data[j]); =oluw|TCe7  
SortUtil.swap(data,k,j); `-\4Dx1!q  
if((k-i)>1) quickSort(data,i,k-1); Z%`} `(  
if((j-k)>1) quickSort(data,k+1,j); Q[i;I bY  
x&l?Cfvv=  
} lBR6O!sBP  
/** Jb6rEV>  
* @param data G 8uX[-L1  
* @param i J,;; `sf  
* @param j 9*[!uu  
* @return 3HO 4 h\mp  
*/ DA]!ndJD  
private int partition(int[] data, int l, int r,int pivot) { u4IgPCTZ+  
do{ RT9fp(6*  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 56G5JSB=\  
SortUtil.swap(data,l,r); %;yo\  
} v%/8pmZw;  
while(l SortUtil.swap(data,l,r); 6"|PJ_@P  
return l; Q&MZ/Nnf  
} 6aM`qz)  
lDe9EJR  
} 2N5 N^S  
Cs^o- g!L  
改进后的快速排序: HNY{%D  
r;y&Wa  
package org.rut.util.algorithm.support; jS5e"LMIq  
J%aW^+O  
import org.rut.util.algorithm.SortUtil; '&?47+W  
c[sC 2  
/** b[uTt'p}  
* @author treeroot Z B`!@/3X  
* @since 2006-2-2 Kw(/#C:$  
* @version 1.0 S?r:=GS  
*/ ]}ff*W  
public class ImprovedQuickSort implements SortUtil.Sort { b=F"  
L^RyJ;^c  
private static int MAX_STACK_SIZE=4096; `*KS` z?  
private static int THRESHOLD=10; >6 :slNM#  
/* (non-Javadoc) bLCrh(<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &VR<'^>  
*/ J0@m Ol  
public void sort(int[] data) { +O j28vR  
int[] stack=new int[MAX_STACK_SIZE]; To}L%)  
0K7-i+\#  
int top=-1; %T}{rU~X  
int pivot;  O5_[T43  
int pivotIndex,l,r; np=m ~k  
? @h  
stack[++top]=0; `gfK#0x#  
stack[++top]=data.length-1; '(+l77G  
*%B%BJnX  
while(top>0){ { zlq6z  
int j=stack[top--]; ^nkwT~Bya  
int i=stack[top--]; 66:|)  
r\@"({q}_-  
pivotIndex=(i+j)/2; /W:}p(>4a  
pivot=data[pivotIndex]; P M9HfQU?  
m(B6FPjr  
SortUtil.swap(data,pivotIndex,j); L nw+o}  
D Sd 5?  
file://partition e Yyl=YW  
l=i-1; zFP}=K:o)  
r=j; TCmWn$LeE  
do{ N%y%)MI8  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); x~Se-#$  
SortUtil.swap(data,l,r); 4z#CkT  
} ?B@hCd)  
while(l SortUtil.swap(data,l,r); 9tl Fbu  
SortUtil.swap(data,l,j); n0 !S;HH-  
ai#EFo+#  
if((l-i)>THRESHOLD){ /RX7AXXB  
stack[++top]=i; (C6Y*Zm\  
stack[++top]=l-1; xS,):R  
} d@C ;rzR  
if((j-l)>THRESHOLD){ ZJy D/9y  
stack[++top]=l+1; dH?pQ   
stack[++top]=j; uBl&|yvxB  
} b.YQN'  
k^R>xV  
} vk{4:^6.TV  
file://new InsertSort().sort(data); )byQ=-< 1  
insertSort(data); jG)>{D  
} _'2r=a#`  
/** A<>W^ow  
* @param data o }Tv^>L  
*/ ~{2@-qcm  
private void insertSort(int[] data) { /%)M lG  
int temp; XKks j!'B  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); EnwiE  
} 5wGyM10  
} f}Uw%S=w,  
} 8P5xRUkV  
b <=K@I.=  
} n[ba  
v^,A~oe`t  
归并排序: 7-^df0  
<408lm  
package org.rut.util.algorithm.support;  ~ikTo -  
I62Yg p$K  
import org.rut.util.algorithm.SortUtil; P-+^YN,  
fK4laDB TO  
/** 8 eh C^Cg  
* @author treeroot Xk7zXah  
* @since 2006-2-2 zoUW}O  
* @version 1.0 ?W.Y x7c  
*/ xl# j_d,  
public class MergeSort implements SortUtil.Sort{ <U1uuOt  
_r^&.'q  
/* (non-Javadoc) }d6g{`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QL|Vke:N4  
*/ w`!Yr:dU  
public void sort(int[] data) { ORfA]I-u  
int[] temp=new int[data.length]; Kl+*Sp!  
mergeSort(data,temp,0,data.length-1); HF47Lc*c  
} 3P #1fI(c  
z,2m7C  
private void mergeSort(int[] data,int[] temp,int l,int r){ Dt r'X@U  
int mid=(l+r)/2; 5O*+5n  
if(l==r) return ; i>!f|<  
mergeSort(data,temp,l,mid); R^PQ`$W 'R  
mergeSort(data,temp,mid+1,r); NiyAAw  
for(int i=l;i<=r;i++){ \7og&j-h  
temp=data; K32eZv`T7  
} QFX|ZsmK  
int i1=l; J~c]9t  
int i2=mid+1; <D&75C#  
for(int cur=l;cur<=r;cur++){ ?d_<S0j-)  
if(i1==mid+1) aP"i_!\.aa  
data[cur]=temp[i2++]; q07rWPM "e  
else if(i2>r) L` Qiu@  
data[cur]=temp[i1++]; L G=Q  
else if(temp[i1] data[cur]=temp[i1++]; @]2cL  
else Crww\#E;  
data[cur]=temp[i2++]; fF *a/\h %  
} BA-n+WCWJ  
} d]@9kG  
0K#dWc}"a  
} iqOd]H]v  
rH-_L&  
改进后的归并排序: kkd<CEz2IM  
xX|-5cM;  
package org.rut.util.algorithm.support; Jwa2Y0  
.6/[X` *  
import org.rut.util.algorithm.SortUtil; /ox}l<ha  
'4O1Y0K  
/** 3}N:oJI$z  
* @author treeroot Kt`0vwkjvI  
* @since 2006-2-2 E~N}m7kTl/  
* @version 1.0 ^8fO3<Jg  
*/ T.K$a\/{,  
public class ImprovedMergeSort implements SortUtil.Sort { Ex<-<tY  
kB  :")$  
private static final int THRESHOLD = 10; fx_7B (  
VBd.5YW  
/* ?[T&y ,ln  
* (non-Javadoc) Z~]17{x0  
* zL7+HY* 3o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) | @mZ]`p  
*/ ap=M$9L'  
public void sort(int[] data) { gbSZ- ej  
int[] temp=new int[data.length]; wk-ziw  
mergeSort(data,temp,0,data.length-1); H"n"Q:Yp  
} Llg[YBJ7>  
{v2Q7ZO-  
private void mergeSort(int[] data, int[] temp, int l, int r) { sRYFu%  
int i, j, k; =o5hD,>e  
int mid = (l + r) / 2; l(<o,Uv[`  
if (l == r) `aSz"4Wd  
return; Ag?@fuk$J  
if ((mid - l) >= THRESHOLD) y~W6DL}  
mergeSort(data, temp, l, mid); e`C'5`d]  
else Bj\0RmVa1  
insertSort(data, l, mid - l + 1); %tpt+N?  
if ((r - mid) > THRESHOLD) IcaF 4#  
mergeSort(data, temp, mid + 1, r); #_Tceq5  
else 3RGVH,  
insertSort(data, mid + 1, r - mid); D5U\~'{L  
ogQbST  
for (i = l; i <= mid; i++) { 4} =]QQoE  
temp = data; P'FI'2cN7  
} M%6{A+(  
for (j = 1; j <= r - mid; j++) { u2BVQ<SA  
temp[r - j + 1] = data[j + mid]; B8C"i%8V)  
} ZpWG  
int a = temp[l]; +]I7)  
int b = temp[r]; Y&+<'FA  
for (i = l, j = r, k = l; k <= r; k++) { C' ny 2>uA  
if (a < b) { R%b,RH#  
data[k] = temp[i++]; Z*`CK^^~  
a = temp; W\X51DrEx  
} else { 9C`Fd S   
data[k] = temp[j--]; L$Ss]Ar=  
b = temp[j]; +mH Kk  
} f? ko%c_p  
} *<BasP  
} XhTp'2,]  
~>+}(%<,  
/** 0y6nMI  
* @param data 2MJ0[9  
* @param l J *^|ojX  
* @param i yyBfLPXZ  
*/ 18|H  
private void insertSort(int[] data, int start, int len) { oIf -s[uH  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); <5q:mG88  
} X $cW!a  
} U3p=H^MB.  
} "iOT14J!7  
} DJ=miJI'  
HO$s&}t  
堆排序: =Y /  
3hb1^HNT  
package org.rut.util.algorithm.support; k>2 xm  
w^P4_Yr  
import org.rut.util.algorithm.SortUtil; 0M:.Jhp  
jh}[7M  
/** 'w!Hjq]$  
* @author treeroot O/0m|~`iY  
* @since 2006-2-2 + PGfQN  
* @version 1.0 lE%0ifu  
*/ 22(0Jb\_  
public class HeapSort implements SortUtil.Sort{ '{Iv?gh"  
g+)T\_#u  
/* (non-Javadoc) 54tpR6%3p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N}zQ)]xz+r  
*/ lq+FH&  
public void sort(int[] data) { '7wWdq  
MaxHeap h=new MaxHeap(); ,AACE7%l  
h.init(data); JCS$Tm6y<_  
for(int i=0;i h.remove(); Vb0hlJb  
System.arraycopy(h.queue,1,data,0,data.length); OTalR;:]r  
} ^Cpvh}1#  
z\Qg 3BS  
private static class MaxHeap{ 2NI3 &;{4  
idGM%Faur  
void init(int[] data){ K4A=lD+  
this.queue=new int[data.length+1]; ! QP~#a%  
for(int i=0;i queue[++size]=data; o;-)84Aa  
fixUp(size); eK4\v:oG1  
}  [T !#s  
} Q9?/)&3Bu  
A1Rt  
private int size=0; :`oYD  
+9,"ne1'e  
private int[] queue; 0xZq?9a  
mu|#(u  
public int get() { G#n27y nh  
return queue[1]; Bd)Qz(>rw  
} ?%B%[u  
ZZ?=^g  
public void remove() { e9"<.:&  
SortUtil.swap(queue,1,size--); d-39G*;1  
fixDown(1); \jZvP`.2  
} ^!N_Nx/M  
file://fixdown 6z!?U:bT  
private void fixDown(int k) { Zwp*JH+G  
int j; V$<og  
while ((j = k << 1) <= size) { C$ nT&06o  
if (j < size %26amp;%26amp; queue[j] j++; F8>Fp"  
if (queue[k]>queue[j]) file://不用交换 =Tb~CT=  
break; ?$ o9/9w  
SortUtil.swap(queue,j,k); TfVB~"&  
k = j; uu]<R@!J  
} }-YD_Pm K-  
} 5\RKT)%X  
private void fixUp(int k) { )!){4c/  
while (k > 1) { WE68a!6  
int j = k >> 1; 9`QWqu[  
if (queue[j]>queue[k]) V5%B ,.d:  
break; cm]8m_!  
SortUtil.swap(queue,j,k); B,, f$h!  
k = j; i wQ'=M  
} Y }Rx`%X  
} q_ ']i6  
.6f %"E,  
} .B_) w:oF  
3($%AGKJ  
} :Y ~fPke  
IHMZE42  
SortUtil: Z/6B[,V  
)r5QOa/  
package org.rut.util.algorithm; ]X;Ty\UD&  
_U%!&_m6  
import org.rut.util.algorithm.support.BubbleSort; `A$yF38!  
import org.rut.util.algorithm.support.HeapSort; dX,2cK[aG  
import org.rut.util.algorithm.support.ImprovedMergeSort; lMFj"x\  
import org.rut.util.algorithm.support.ImprovedQuickSort; ??ah  
import org.rut.util.algorithm.support.InsertSort; d,6 Z  
import org.rut.util.algorithm.support.MergeSort; vw>O;u.]B  
import org.rut.util.algorithm.support.QuickSort; 4 Z1- RS  
import org.rut.util.algorithm.support.SelectionSort; N-4LdC  
import org.rut.util.algorithm.support.ShellSort; P ;PS+S9  
R0, Q`  
/** 8yA :C  
* @author treeroot Tg)Fr)  
* @since 2006-2-2 1E=%:?d  
* @version 1.0 3RZP 12x  
*/  s>76?Q:i  
public class SortUtil { Qte=<Z)  
public final static int INSERT = 1; %}x/ fq  
public final static int BUBBLE = 2;  r,!7TuBl  
public final static int SELECTION = 3; B&+V%~/  
public final static int SHELL = 4; OjJKloy'  
public final static int QUICK = 5; #rF|X6P  
public final static int IMPROVED_QUICK = 6; N9Y,%lQ|B8  
public final static int MERGE = 7; w<.{(1:v  
public final static int IMPROVED_MERGE = 8; `GUj.+u  
public final static int HEAP = 9; uhbo/7d'7  
!2>gC"$nv  
public static void sort(int[] data) { |9{l8`9}_  
sort(data, IMPROVED_QUICK); W5<1@  
} Etg'"d@[  
private static String[] name={ >-c;  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" v|<Dc8i+  
}; 71m dU6Kq  
blk ~r0.2  
private static Sort[] impl=new Sort[]{ :L&-  
new InsertSort(), LoPWho[8  
new BubbleSort(), 3)Wi? -  
new SelectionSort(), 7-nwfp&|$  
new ShellSort(), ,H'O`oV!1E  
new QuickSort(), & 2& K9R  
new ImprovedQuickSort(), o{(-jhR  
new MergeSort(), Z; r}G m  
new ImprovedMergeSort(), ?9i 7w1`  
new HeapSort() sX^m1v~N|  
}; RYZh"1S;k  
pMHY2t  
public static String toString(int algorithm){ V+W,# 5  
return name[algorithm-1]; 1b-4wonQd  
} %AF~Ki  
&JVe -.  
public static void sort(int[] data, int algorithm) { C(Yk-7  
impl[algorithm-1].sort(data); APsd^J  
} P"cc$lB~I  
hS OAjS  
public static interface Sort { #O7|&DqF{  
public void sort(int[] data); &|LZ%W0Fb  
} cP`o?:  
 U(dT t  
public static void swap(int[] data, int i, int j) { = iB0ak  
int temp = data; Q>cLGdzO  
data = data[j]; J'sVT{@GS  
data[j] = temp; ^!3Sz1  
} k$9oUE,  
} N0,.cd]y`  
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