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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。 f`iDF+h<6  
插入排序: [c XSk  
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package org.rut.util.algorithm.support; e-%q!F(Bf  
y#= j{  
import org.rut.util.algorithm.SortUtil; FV{XPr%   
/** "ji+~%`^[t  
* @author treeroot 8T[<&<^-  
* @since 2006-2-2 Cu_-QE  
* @version 1.0 yq1 G6hw  
*/ +|TXKhm{  
public class InsertSort implements SortUtil.Sort{ v3G$9 (NE;  
06?d#{?M1o  
/* (non-Javadoc) bz1AmNZG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y[W:Zhl;  
*/ 50`|#zF^#  
public void sort(int[] data) { RRQIlI<  
int temp; nTD4^'  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); W0}FOfL9  
} Rd<K.7&A}  
} IyM:9=}5  
} qC5IV}9`  
8m?cvI  
} / <%EKu5  
B4 5#-V  
冒泡排序: Ug384RzHN  
?<S fhjU  
package org.rut.util.algorithm.support; QMy1!:Z&!  
[7NO !^  
import org.rut.util.algorithm.SortUtil; :98:U~ d1  
6Kw?  
/** xSDTO$U8%  
* @author treeroot Xtloyph  
* @since 2006-2-2 { `xC~B h  
* @version 1.0 [KCR@__  
*/ ^+0>,-)F  
public class BubbleSort implements SortUtil.Sort{ ]re}EB\Rs  
VGc.yM)& j  
/* (non-Javadoc) bcT'!:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Xoha.6$l5  
*/ !R@jbM  
public void sort(int[] data) { ,9MNB3  
int temp; oS}fr?  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 5" (FilM  
if(data[j] SortUtil.swap(data,j,j-1); HKIr?  
} Q#*R({)GH  
} Z>l<.T"t'  
} FGhnK'  
} A~^x*#q{4  
bnPhhsR  
} jp1e3 Cg  
!}5rd\  
选择排序: yb)qg]2  
i g .  
package org.rut.util.algorithm.support; LDYa{w-t  
\cf'Hj}  
import org.rut.util.algorithm.SortUtil;  z:   
OmK4 \_.  
/** _'<FBlIN  
* @author treeroot e{3%-  
* @since 2006-2-2 >&k`NXS|V  
* @version 1.0 $=`d[04  
*/ n&a\mGF  
public class SelectionSort implements SortUtil.Sort { (;H% r &  
Qc=-M'9  
/* AX{7].)F  
* (non-Javadoc) U9*< dR  
* &0H_W xKeB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ; ), ,Hk  
*/ |68u4zK  
public void sort(int[] data) { z@ `u$D$n  
int temp; EWY'E;0@5  
for (int i = 0; i < data.length; i++) { ZE= Yn~XM  
int lowIndex = i; P,(_y8  
for (int j = data.length - 1; j > i; j--) { g++-v HD  
if (data[j] < data[lowIndex]) { 1Dhu 5ht  
lowIndex = j; Pjxj$>&;*j  
} {B e9$$W,  
} KD\sU6  
SortUtil.swap(data,i,lowIndex); \ H#"  
} IYHNN  
} )vpYVr-  
wQ~]VV RN  
} rq Uk_|Xa  
/0$405  
Shell排序: a*:GCGe  
%NTJih`  
package org.rut.util.algorithm.support; O%6D2d  
Y9&na&vY?  
import org.rut.util.algorithm.SortUtil; -@Urq>^v T  
Jr= fc*f  
/** [LUqF?K&  
* @author treeroot =BJe}AV  
* @since 2006-2-2 b TZ.y.sI  
* @version 1.0 =+I-9=  
*/ <M}O&?N 8x  
public class ShellSort implements SortUtil.Sort{ @ &Od1X  
2@@evQ  
/* (non-Javadoc) ZLdIEBi=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uu"hu||0_  
*/ lN0u1)'2  
public void sort(int[] data) { 8R-;cBT  
for(int i=data.length/2;i>2;i/=2){ wh2E$b(-  
for(int j=0;j insertSort(data,j,i); @,-D P41g  
} _ n1:v~  
} shP}T[<  
insertSort(data,0,1); 7$t['2j3  
} wA)n ryXV  
#0\* 8 6  
/** k#7A@Vb  
* @param data [7g-M/jvY  
* @param j FC||6vJth  
* @param i N9y+P sh  
*/ +_u~Np  
private void insertSort(int[] data, int start, int inc) { ^4'!B +}F  
int temp; %Pj}  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ~*UY[!+4^=  
} ao[yHcAs  
} g}uSIv^  
} ^]~!:Ej0  
x8~*+ j  
} k g Rys  
OdNcuiLa  
快速排序: Zm7, O8  
KmM:V2@A$  
package org.rut.util.algorithm.support; NV@$\ <  
GCX?W`  
import org.rut.util.algorithm.SortUtil; JNJ6HyCU  
+Z86Qz_  
/** b`,Sd.2=('  
* @author treeroot ,'9R/7%s  
* @since 2006-2-2 4HX;9HPHE<  
* @version 1.0 {^^LeUd#V  
*/ !(viXV5  
public class QuickSort implements SortUtil.Sort{ K5\l (BB  
UO!} 0'  
/* (non-Javadoc) I0=L_&`)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t}?-ao  
*/ N 7Y X  
public void sort(int[] data) {  Zy8tI#  
quickSort(data,0,data.length-1); U~t!   
} ,?Zy4-  
private void quickSort(int[] data,int i,int j){ 53pT{2]zAi  
int pivotIndex=(i+j)/2; i\gt @  
file://swap 79-5 0}A  
SortUtil.swap(data,pivotIndex,j); `&xdSH  
[TFp2B~)#  
int k=partition(data,i-1,j,data[j]); 8lS RK%  
SortUtil.swap(data,k,j); Ap;^ \5  
if((k-i)>1) quickSort(data,i,k-1); <*-8E(a  
if((j-k)>1) quickSort(data,k+1,j); Z glU{sU  
n:b,zssP  
} a/3'!}&e  
/** JnIG;/  
* @param data inZ0iU9dy  
* @param i XW@C_@*J  
* @param j `D$^SHfyz  
* @return o_[~{@RoR  
*/ H@~tJ\L  
private int partition(int[] data, int l, int r,int pivot) { gs0`nysM#  
do{ p~""1m01,D  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Sm?|,C3V  
SortUtil.swap(data,l,r); YI> xxWA  
} LU`)  
while(l SortUtil.swap(data,l,r); Fp [49  
return l; ]gm3|-EiY  
} q5@Nd3~h  
51H6 W/$  
} _@gg,2 u-  
_x#y   
改进后的快速排序: bAuiMw7!  
V[kn'QkWv  
package org.rut.util.algorithm.support; L~by`q N_  
VM\\.L  
import org.rut.util.algorithm.SortUtil; 0Zo><=  
?~#[ cx  
/** Z7[S698  
* @author treeroot ]KXyi;n2  
* @since 2006-2-2 ~ Fl\c-  
* @version 1.0 o{n#f?EA  
*/ B,%KvL&xMX  
public class ImprovedQuickSort implements SortUtil.Sort { OYn5k6  
BI<9xl]a  
private static int MAX_STACK_SIZE=4096; !M9mX%UQ  
private static int THRESHOLD=10;  w}t}Sh  
/* (non-Javadoc) m qUDve(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fi\) ka\u  
*/ |ITb1O`_P  
public void sort(int[] data) { @~N"MsF3  
int[] stack=new int[MAX_STACK_SIZE]; -f1}N|hy  
;X0uA?  
int top=-1; I,,SR"  
int pivot; aRI.&3-  
int pivotIndex,l,r; _5O~ ]}  
XFl&(I4tB  
stack[++top]=0; :?m"kh ~  
stack[++top]=data.length-1; zxx9)I@?A  
A&%7Z^Pp  
while(top>0){ @,6*yyO  
int j=stack[top--]; "{H{-`Ni  
int i=stack[top--]; fb^R3wd$ff  
;E5XH"L\  
pivotIndex=(i+j)/2; )FIFf;r  
pivot=data[pivotIndex]; &TrL!9FtJ  
>1]hR)Ip  
SortUtil.swap(data,pivotIndex,j); )`\Q/TMl5  
j]5e$e{  
file://partition 0Q,Tcj  
l=i-1; gSyBoY  
r=j; 0/fZDQH  
do{ v$(Z}Hg  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); {TMng&  
SortUtil.swap(data,l,r); qs_cC3"=%=  
} uGW#z_{(n  
while(l SortUtil.swap(data,l,r); B> \q!dX3  
SortUtil.swap(data,l,j); 0oBAJP  
F{.g05^y  
if((l-i)>THRESHOLD){ 6cbV[ !BL  
stack[++top]=i; I69Z'}+qz  
stack[++top]=l-1; /l3Oi@\  
} Gi$\th,  
if((j-l)>THRESHOLD){ "[7'i<,AI  
stack[++top]=l+1; \VW":+  
stack[++top]=j; g/P1lQ)  
} *`/4KMrq  
V$Oj@vI  
} U7f o4y1}  
file://new InsertSort().sort(data); `zl,|}u)  
insertSort(data); g}a+%Obb  
} ?@`5^7*  
/** $*P +   
* @param data h4Arg~Or  
*/ lU&2K$`  
private void insertSort(int[] data) { ]6|?H6'/`v  
int temp; "SWL@}8vx  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); E piF$n  
} 'xa EG,P  
} iS"6)#a72  
} I|c?*~7*  
dXsL0r*c  
} $-!7<a-  
+2Aggv>*  
归并排序: ;G"!y<F  
*UN*&DmF  
package org.rut.util.algorithm.support; Qx!Bf_,J  
Y(EF )::  
import org.rut.util.algorithm.SortUtil; *p0n^XZ% ?  
8. +f@wv  
/** Fy$ C._C$  
* @author treeroot T<y fpUzX  
* @since 2006-2-2 QqBQ[<_  
* @version 1.0 <pS#wTsN4%  
*/ mYXL  
public class MergeSort implements SortUtil.Sort{ ) R\";{`M  
J<Ki;_=I  
/* (non-Javadoc) Zc&pJP+M'U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |gINB3L  
*/ z\K %  
public void sort(int[] data) { P#8lO%;  
int[] temp=new int[data.length]; By}ZHK94I  
mergeSort(data,temp,0,data.length-1); ,,#6SR(n  
} %P#| }  
a8k`Wog  
private void mergeSort(int[] data,int[] temp,int l,int r){ GU Mf}y  
int mid=(l+r)/2; 9]tW;?  
if(l==r) return ; 9O^~l2`  
mergeSort(data,temp,l,mid); G2@'S&2@s  
mergeSort(data,temp,mid+1,r); 9fM=5  
for(int i=l;i<=r;i++){ fJ\ u8  
temp=data; q%/.+g2-\  
} 4@a/k[,  
int i1=l; J^~J&  
int i2=mid+1; $!z.[GL  
for(int cur=l;cur<=r;cur++){ `7V1 F.\  
if(i1==mid+1) >^<;;8Xh  
data[cur]=temp[i2++]; i-dosY`81  
else if(i2>r) YX3NZW2i  
data[cur]=temp[i1++]; BuC\Bd^0  
else if(temp[i1] data[cur]=temp[i1++]; ?"?AH/ED  
else r]~]-VZ/  
data[cur]=temp[i2++]; s(L!]d.S$y  
} As tuM]  
} 7W&XcF  
#X'su`+  
} 3qV\XC+  
Z*NTF:6c  
改进后的归并排序: ']OT7)_  
Hf30ve}  
package org.rut.util.algorithm.support; uo|:n"v  
Y[>`#RhP  
import org.rut.util.algorithm.SortUtil; eU]I !pI<  
6bf!v  
/** ~ySsv  
* @author treeroot ZR{YpLFQ  
* @since 2006-2-2 Lo}/k}3Sx  
* @version 1.0 _Ii=3Qsf  
*/ 6D{70onY+  
public class ImprovedMergeSort implements SortUtil.Sort { G2|G}#E  
, BZ(-M  
private static final int THRESHOLD = 10; ,eqRI>,\  
X?`mYoe  
/* Ggv*EsN/cC  
* (non-Javadoc) %Z*)<[cIE0  
* ;oVOq$ql  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n \&H~0X  
*/ wg:\$_Og  
public void sort(int[] data) { v9t'CMU  
int[] temp=new int[data.length]; PVmePgF   
mergeSort(data,temp,0,data.length-1); >.XXB 5a  
} x{rjngp2  
Ou f\%E<  
private void mergeSort(int[] data, int[] temp, int l, int r) { eOZ~p  
int i, j, k; C}9|e?R[Rz  
int mid = (l + r) / 2; {q;_Dd  
if (l == r) ,hT**(W  
return; ;2sP3!*  
if ((mid - l) >= THRESHOLD) {q~N$"#  
mergeSort(data, temp, l, mid); tejpY  
else 'Ir   
insertSort(data, l, mid - l + 1); mFd|JbW  
if ((r - mid) > THRESHOLD) KyqP@ {  
mergeSort(data, temp, mid + 1, r); AF{@lDa1h  
else RyWfoLc  
insertSort(data, mid + 1, r - mid); YnCuF0>  
{e., $'#  
for (i = l; i <= mid; i++) { !rG-[7K  
temp = data; 6eNBldP!  
} bp}]'NA  
for (j = 1; j <= r - mid; j++) { N5xI;UV9'  
temp[r - j + 1] = data[j + mid]; }C~9 ?Y  
} rvb@4-i>iI  
int a = temp[l]; |H 5$VSw  
int b = temp[r]; oj ,;9{-  
for (i = l, j = r, k = l; k <= r; k++) { Fa#5a'}I  
if (a < b) { $lUz!m jG  
data[k] = temp[i++]; #wh[F"zX  
a = temp; h]VC<BD6S  
} else { kpQN>XV#  
data[k] = temp[j--]; OE}c$!@  
b = temp[j]; ,wyEo>>4)  
} r -uu`=,  
} D<*) ^^  
} Q7mikg=1-  
I}]UQ4XJ  
/** {D [z>I;D  
* @param data hN!{/Gc|  
* @param l v.gAi6  
* @param i :e}j$v F  
*/ 7sVO?:bj}  
private void insertSort(int[] data, int start, int len) { P(L iH  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 0]GenT"   
}  y'^b{q@  
} /<o?T{z<-  
} FJW,G20L  
} R+Ug;r-[  
T~?&hZ>  
堆排序: m*KI'~#$%  
1ZvXRJ)%  
package org.rut.util.algorithm.support; %F:; A  
g12.4+  
import org.rut.util.algorithm.SortUtil; fA), ^  
,V;HM F.  
/** Jl$ X3wE  
* @author treeroot A 0;ng2&  
* @since 2006-2-2 e_1L J  
* @version 1.0 w3ZO CWJS  
*/ 5 <7sVd.  
public class HeapSort implements SortUtil.Sort{ @ xTVX'$  
wV4MP1c$  
/* (non-Javadoc) Nfmr5MU_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TEC#owz  
*/ vJb/.)gh]  
public void sort(int[] data) { j`MK\*qmz  
MaxHeap h=new MaxHeap(); [Z!oVSCZD%  
h.init(data); +9# qNkP  
for(int i=0;i h.remove(); W"tGCnd  
System.arraycopy(h.queue,1,data,0,data.length); #smfOGSd  
} 58o&Dv6?  
U.N& ~S  
private static class MaxHeap{ Xl>ZnI];  
-L wz T  
void init(int[] data){ +.xK`_[M  
this.queue=new int[data.length+1]; Lu4>C2{  
for(int i=0;i queue[++size]=data; $3eoZ1q'U-  
fixUp(size); bPuO~#iN~  
} c/Li,9cT'  
} Zk31|dL  
Bc<pD?uOK  
private int size=0; ?0 7}\N0~  
q 'uGB fE.  
private int[] queue; 9LOq*0L_:  
hF5(1s}e$  
public int get() { LK>;\BRe?  
return queue[1]; &Cr4<V6-q  
} 7(<r4{1?  
_k(&<1i  
public void remove() { ]?Q<lMG  
SortUtil.swap(queue,1,size--); >g{b'Xx  
fixDown(1); /!*=*  
} pLMaXX~4_  
file://fixdown LQ||7>{eX  
private void fixDown(int k) { )C rsm&  
int j; [?2,(X0yh1  
while ((j = k << 1) <= size) { KfQR(e9n   
if (j < size %26amp;%26amp; queue[j] j++; $JiypX^DOP  
if (queue[k]>queue[j]) file://不用交换 ]y"=/Nu-Ja  
break; .P ??N  
SortUtil.swap(queue,j,k); 8,&Y\b`..  
k = j; bb-u'"5^]  
} O! _d5r&,  
} Z,8t!Y  
private void fixUp(int k) { *lQa^F  
while (k > 1) { A}_pJH  
int j = k >> 1; p xW*kS  
if (queue[j]>queue[k]) R pT7Nr  
break; @Z<Z//^k  
SortUtil.swap(queue,j,k); XS.*CB_m_  
k = j; vr_Z0]4`C9  
} bP4}a!t+n  
} 4"\%/kG  
WzBr1 ea{I  
} D4~]:@v~n  
v8C4BuwA  
} {~XnmBs  
"h8fTB\7S\  
SortUtil: }?sC1]-j&  
 EIPXq  
package org.rut.util.algorithm; y43ha  
Au:R]7   
import org.rut.util.algorithm.support.BubbleSort; z A/Fh(uX  
import org.rut.util.algorithm.support.HeapSort; $\PU Y8  
import org.rut.util.algorithm.support.ImprovedMergeSort; \(r$f!`  
import org.rut.util.algorithm.support.ImprovedQuickSort; ; {v2s;  
import org.rut.util.algorithm.support.InsertSort;  #J  
import org.rut.util.algorithm.support.MergeSort; *<X*)A{C  
import org.rut.util.algorithm.support.QuickSort; |n~,{=  
import org.rut.util.algorithm.support.SelectionSort; Mu6DT p~k  
import org.rut.util.algorithm.support.ShellSort; >G As&\4hs  
9q\_UbF  
/** CW]Th-xc  
* @author treeroot >qd=lm <,  
* @since 2006-2-2 buhbUmQ2  
* @version 1.0 Q&/WVRD  
*/ i4&V+h"  
public class SortUtil { R'fEw3^  
public final static int INSERT = 1; Ns5P,[pBOZ  
public final static int BUBBLE = 2; -x|!?u5F  
public final static int SELECTION = 3; s5)y %, E  
public final static int SHELL = 4; %N0m$*  
public final static int QUICK = 5; dAy\IfZX=  
public final static int IMPROVED_QUICK = 6; M; YJpi  
public final static int MERGE = 7; 32`Z3-  
public final static int IMPROVED_MERGE = 8; WADEDl&,'  
public final static int HEAP = 9; R]0`-_T  
J5Ti@(G5V  
public static void sort(int[] data) { FOjX,@x&  
sort(data, IMPROVED_QUICK); n+nZ;GJ5d  
} iU(B#ohW"  
private static String[] name={ j-ob7(v)*]  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Qraa0]56  
}; PX`xr1o  
6E.[F\u  
private static Sort[] impl=new Sort[]{ s-~`Ao' <  
new InsertSort(), DgB;6Wl  
new BubbleSort(), _/Ay$l;F  
new SelectionSort(), `g0^ W/ j  
new ShellSort(), k(_OhV_  
new QuickSort(), \r [@A3O  
new ImprovedQuickSort(), 7OS i2  
new MergeSort(), 08! _B\  
new ImprovedMergeSort(), 4&v&XLkb  
new HeapSort() f>3)}9?xc}  
}; n^*,JL 9@  
N7YCg  
public static String toString(int algorithm){ B![:fiR`  
return name[algorithm-1]; {SD%{  
} [a?bv7Kz  
A;o({9VH`Z  
public static void sort(int[] data, int algorithm) { Ge^,hAM'  
impl[algorithm-1].sort(data); ~ H/ZiBL@  
} *kcc]*6@s  
6~x a^3G:  
public static interface Sort { t D4-Llj6  
public void sort(int[] data); I&<'A [vHl  
} @.`k2lxGd~  
'(g;nU<  
public static void swap(int[] data, int i, int j) { m_,Jbf  
int temp = data; cvhwd\  
data = data[j]; kp#XpcS  
data[j] = temp; yB 'C9wEH  
} +wQ}ZP&  
} 2b-g`60<  
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