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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- E8q  
插入排序: o}4J|@Hi|4  
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package org.rut.util.algorithm.support; 540,A,>:tb  
| N/Wu9w$  
import org.rut.util.algorithm.SortUtil; hd E?%A  
/** gQ@fe3[  
* @author treeroot [hT|]|fJS;  
* @since 2006-2-2 hy?e?^  
* @version 1.0 kbF+aS  
*/ NDv_@V(D  
public class InsertSort implements SortUtil.Sort{ )Ap0" ?q  
sF=8E8qa   
/* (non-Javadoc) GE0,d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) etHkyF  
*/ A_vf3 *q  
public void sort(int[] data) { x\m?*5p  
int temp; r-+S^mOE]  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9/x_p;bI  
} N=X(G(  
} eGJ}';O,g  
} W7ffdODb  
7<ZCeM2x  
} ;0!rq^JG  
zu8l2(N  
冒泡排序: cqyrao3;  
)(&WhZc Z  
package org.rut.util.algorithm.support; aAX(M=3  
9WH  
import org.rut.util.algorithm.SortUtil; )]?"H  
)K+ Tvx3(m  
/** (VxWa#P  
* @author treeroot *`HE$k!  
* @since 2006-2-2 kroO~(\  
* @version 1.0 edW:(19}  
*/ Z} 8 m]I  
public class BubbleSort implements SortUtil.Sort{ 0f<$S$~h  
ee=d*)  
/* (non-Javadoc) <&$:$_ah  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mq(*4KFWJ2  
*/ ]ZjydQjo )  
public void sort(int[] data) { pzPm(M1^X  
int temp; l"-F<^ U  
for(int i=0;i for(int j=data.length-1;j>i;j--){ %?7j Q  
if(data[j] SortUtil.swap(data,j,j-1); u9 yXHf  
} XZk?aik}`  
} 9W[ ~c"Ku  
} I>jDM  
} ?\l@k(w4[x  
]5=C3Y  
} #el i_Cxe  
-brn&1oJ  
选择排序: F9SkEf]99  
oq>8  
package org.rut.util.algorithm.support; xqua>!mqS  
{{\ d5CkX  
import org.rut.util.algorithm.SortUtil; pM^r8kIH  
zeZ}P>C  
/** r^$4]@Wn  
* @author treeroot F5#P{ zk|  
* @since 2006-2-2 9Fkzt=(E~  
* @version 1.0 :&/b}b!)AX  
*/ * @QC:1k  
public class SelectionSort implements SortUtil.Sort { /4R|QD  
'{t&!M`  
/* }Z~& XL=  
* (non-Javadoc) q i27:oJ  
* hu G]kv3F:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1gZW~6a}  
*/ *k]izWsV*  
public void sort(int[] data) { e uF@SS  
int temp; ,/qS1W(  
for (int i = 0; i < data.length; i++) { D\Nhq Vw  
int lowIndex = i; A{!D7kwTz~  
for (int j = data.length - 1; j > i; j--) { ;DkX"X+  
if (data[j] < data[lowIndex]) { Y;L,}/[  
lowIndex = j; `V;vvHP A  
} UUlrfur~  
} j0L A  
SortUtil.swap(data,i,lowIndex); A;4O,p@   
} ~?m vV`30&  
} -I'@4\<  
oA _,jsD4  
} k3/V$*i,1b  
z8ox#+l  
Shell排序: GV5hmDzRs  
KV!!D{VS`@  
package org.rut.util.algorithm.support; whzV7RT  
!H5r+%Oo|  
import org.rut.util.algorithm.SortUtil; Y-.pslg  
A7;|~??  
/** FTihxC?.L  
* @author treeroot jM E==)Y  
* @since 2006-2-2 },2mIit(  
* @version 1.0 <R6$ kom`  
*/ Rw54`_kFEB  
public class ShellSort implements SortUtil.Sort{ t/=xY'7  
7%-+7O3ud  
/* (non-Javadoc) l~/g^lN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k_2W*2'S  
*/ R9/(z\'}  
public void sort(int[] data) { `xO9xo#  
for(int i=data.length/2;i>2;i/=2){ ?W%9H\;  
for(int j=0;j insertSort(data,j,i); %U.aRSf/  
} \eD{bD  
} oWZbfR9R  
insertSort(data,0,1); 483BrFV  
} \9*,[mvC  
qw!_/Z3[  
/** 7,sslf2%K  
* @param data >l\?K8jL9  
* @param j J&xH "U  
* @param i B/(]AWi+  
*/ M``I5r*cg  
private void insertSort(int[] data, int start, int inc) { eQ}o;vJN  
int temp; Btmv{'T_y@  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); W6&s_ (  
} DL^}?Ve  
} 6o_t;cpT  
} TZT1nj"n  
@bN`+DC!<  
} H$ !78/f  
vKzq7E  
快速排序: u |h T1l  
^_5Nh^  
package org.rut.util.algorithm.support; .,C8ASfh  
}}";)}C`  
import org.rut.util.algorithm.SortUtil; PKT/U^2X]  
::\7s  
/** (W<n<sl:-  
* @author treeroot p+O 2 :  
* @since 2006-2-2 "g)@jqq:>  
* @version 1.0 2BU%4IG  
*/ !,mv 7Yj  
public class QuickSort implements SortUtil.Sort{  1k5o?'3&  
u0;FQr2  
/* (non-Javadoc)  xZ*.@Pkr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7R 40t3  
*/ tFvc~zz9  
public void sort(int[] data) { Zhl}X!:c?\  
quickSort(data,0,data.length-1); Zd/ACZ[  
} cG|ihG5)  
private void quickSort(int[] data,int i,int j){ MYzyg  
int pivotIndex=(i+j)/2; N5ityJIgQ  
file://swap [dje!5Dc(  
SortUtil.swap(data,pivotIndex,j); 0L "+,  
PKoB~wLH  
int k=partition(data,i-1,j,data[j]); <z3:*=!  
SortUtil.swap(data,k,j); 3[RbVT  
if((k-i)>1) quickSort(data,i,k-1); cO,ELu  
if((j-k)>1) quickSort(data,k+1,j); j5*W[M9W  
y/>]6Pj  
} SArSi6vF  
/** 5I!EsW$sY  
* @param data vHY."$|H  
* @param i 6.z8!4fpl  
* @param j e}u# :ysj  
* @return OPp>z0p%6X  
*/ zV(F9}^  
private int partition(int[] data, int l, int r,int pivot) { /dU-$}>ZI  
do{ 69U[kW&  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); q M( n]{H  
SortUtil.swap(data,l,r); k%iZ..  
} C:77~f-+rQ  
while(l SortUtil.swap(data,l,r); 9/rX%  
return l; X\?e=rUfn  
} -5Qsc/ s&  
Hq.ys>_  
} mK3U*)A   
*(PQaXx4  
改进后的快速排序: CU3[{a  
{wWh;  
package org.rut.util.algorithm.support; H7 acT  
:I(-@2?{  
import org.rut.util.algorithm.SortUtil; y{~l&zrl  
.".xNHR#  
/** %m:T?![XO  
* @author treeroot &J~vXk: !  
* @since 2006-2-2 S ^?&a5{o  
* @version 1.0 8y!d^EQ  
*/ 0*66m:C2  
public class ImprovedQuickSort implements SortUtil.Sort { <Z^t^ O  
w$~|/UrLf  
private static int MAX_STACK_SIZE=4096; $`:/O A<.  
private static int THRESHOLD=10; hcEU kD  
/* (non-Javadoc) p&w XRI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S0V%JY;Gv  
*/ VXforI  
public void sort(int[] data) { B_w;2ZuA  
int[] stack=new int[MAX_STACK_SIZE]; m^dKww  
)NeI]p  
int top=-1; VmLV:"P}^  
int pivot; Hcw@24ic  
int pivotIndex,l,r; |A_yr/f  
OO.. Y  
stack[++top]=0; "^j& ^sA+  
stack[++top]=data.length-1; eWvL(2`Tx  
bXoj/zek  
while(top>0){ 30 Vv Zb  
int j=stack[top--];  k~#F@_  
int i=stack[top--]; >W,1s  
H R$\jJ  
pivotIndex=(i+j)/2; 5_U3Fs  
pivot=data[pivotIndex]; j_PICv*6  
K'[H`x^  
SortUtil.swap(data,pivotIndex,j); k;v2 3  
|t^7L )&y  
file://partition &(h~{  
l=i-1; %C*oy$.  
r=j; PJu)%al  
do{ {6YLiQ*_  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); cT abZc  
SortUtil.swap(data,l,r); *S.R#4w  
} uX*H2"A  
while(l SortUtil.swap(data,l,r); %\?2W8Qv_J  
SortUtil.swap(data,l,j); eiB5 8b3  
)>q.!"B  
if((l-i)>THRESHOLD){ O/M\Q  
stack[++top]=i; hv 18V>8  
stack[++top]=l-1; Ilvz @=  
} _K{hq<g  
if((j-l)>THRESHOLD){ N%{&%C6{  
stack[++top]=l+1; ;+XiDEX0}  
stack[++top]=j; "J(#|v0  
} iivuH2/~?[  
mBgMu@zt)  
} }PGl8F !  
file://new InsertSort().sort(data); D\8~3S'd  
insertSort(data); :(EU\yCzK  
} x0wy3+GZc  
/** |V{'W-` |[  
* @param data 2ul!f7#E  
*/ 7-81,ADv(  
private void insertSort(int[] data) { :70cOt~Z  
int temp; -fu=RR  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); SesJg~8  
} n0#HPI"  
} c;l d  
} ?#^(QR|/  
:`6E{yfM  
} H XF5fs  
WZaOw w  
归并排序: uUb[Dqn  
v|~ yIywf  
package org.rut.util.algorithm.support; SEQ bw](ss  
8Z%C7 "4O  
import org.rut.util.algorithm.SortUtil; RO,  
I3o6ym-i  
/** S/pTFlptCa  
* @author treeroot "YD<pRVB  
* @since 2006-2-2 :%qJAjR&  
* @version 1.0 1lu _<?O  
*/ -?n|kSHX  
public class MergeSort implements SortUtil.Sort{ :|xV}  
lqe;lWC0Z  
/* (non-Javadoc) rJK3;d?E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6&7#?/Lq  
*/ -G2'c)DR  
public void sort(int[] data) { !=>pI/ECQ*  
int[] temp=new int[data.length]; 31-%IkX+k  
mergeSort(data,temp,0,data.length-1);  lTsl=  
} Qy |*[  
j E_a ++  
private void mergeSort(int[] data,int[] temp,int l,int r){ O$+J{@  
int mid=(l+r)/2; ;cIs$  
if(l==r) return ; ;Ad$Q9)EE  
mergeSort(data,temp,l,mid); bJ~]nj 3  
mergeSort(data,temp,mid+1,r); GYYk3\r  
for(int i=l;i<=r;i++){ 1cWUPVQ  
temp=data; jLc4D'  
} XPE{]4 g  
int i1=l; */ZrZ^?o  
int i2=mid+1; U.UN=uv_  
for(int cur=l;cur<=r;cur++){ 2'W3:   
if(i1==mid+1) nE)?P*$3Z  
data[cur]=temp[i2++]; D OiL3i"H  
else if(i2>r) "Q;n-fqf  
data[cur]=temp[i1++]; N8;/Zd;^  
else if(temp[i1] data[cur]=temp[i1++]; !Y/$I?13Z  
else !q!.OQ  
data[cur]=temp[i2++]; 1t/#ZT!X/  
} O#fGHI<43[  
} X2!vC!4P?L  
5F$ elW  
} \gy39xoW(  
GQO}E@W6C  
改进后的归并排序: .0;Z:x_3  
MHJH@$|]  
package org.rut.util.algorithm.support; JSQNx2VqQ  
VqLqj$P  
import org.rut.util.algorithm.SortUtil; ;_)&#X,?(  
#:v}d+  
/** JX@/rXFY}  
* @author treeroot 37Vs9w  
* @since 2006-2-2 %g}ri8  
* @version 1.0 PvX>+y5  
*/ sF}T9 Ue  
public class ImprovedMergeSort implements SortUtil.Sort { _M= \s>;G  
Jw?J(ig^  
private static final int THRESHOLD = 10; 85YE6^y  
9/TF #  
/* ;muxIr`?  
* (non-Javadoc) , }O>,AU  
* xpt*S~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8W Mhe=[  
*/ V~` ?J6  
public void sort(int[] data) { XfmPq'#Z  
int[] temp=new int[data.length]; }-9  
mergeSort(data,temp,0,data.length-1); LC)-aw>-  
} q-O=Em<*  
.4pWyqU)!  
private void mergeSort(int[] data, int[] temp, int l, int r) { ;QQLYT  
int i, j, k; .~qu,q7k~  
int mid = (l + r) / 2; Zoh[tO   
if (l == r) k2o98bK&;  
return; Q.Tn"rE|  
if ((mid - l) >= THRESHOLD) I|]~f[xI  
mergeSort(data, temp, l, mid); 0\84~t'[  
else +G*2f V>  
insertSort(data, l, mid - l + 1); }stc]L{79  
if ((r - mid) > THRESHOLD) ~]P_Yd-|  
mergeSort(data, temp, mid + 1, r); =B_vQJF2  
else )*ocX)AE  
insertSort(data, mid + 1, r - mid); .^0@^%Wi  
 Ew1> m'  
for (i = l; i <= mid; i++) { <m:8%]%M6  
temp = data; ?bu-6pkx]  
} d-w#\ ^  
for (j = 1; j <= r - mid; j++) { +]P? ?`,R;  
temp[r - j + 1] = data[j + mid]; 1>bG]l1//  
} F1%-IBe  
int a = temp[l]; \zCT""'i  
int b = temp[r]; =n|n%N4Y  
for (i = l, j = r, k = l; k <= r; k++) { /9<zG}:B  
if (a < b) { C5GO?X2  
data[k] = temp[i++]; Ge=+ 0W)&  
a = temp; (<!Yw|~  
} else { jC7`_;>=  
data[k] = temp[j--]; 9q;n@q:29  
b = temp[j]; o_hk!s^4m  
} cX u"-/  
} 8%v1[W i  
} WVlyR\.  
GF[onfQY7  
/** $ \0)~cy  
* @param data X@JrfvKv[d  
* @param l Kk|uN#m  
* @param i /ghXI"ChI  
*/ +HvEiY  
private void insertSort(int[] data, int start, int len) { ^6tGj+D9  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); :=!?W^J  
} jy#'oadS?  
} z)N8#Y~vn  
} |9c J O@  
} }_m/3*x_  
]G m"U!h*  
堆排序: LRl2@&z<  
ikd~k>F  
package org.rut.util.algorithm.support; >DqV^%2l  
g9~>mJR  
import org.rut.util.algorithm.SortUtil; luAmq+  
V*HkF T  
/** w4w[qxV>  
* @author treeroot GqB]^snh  
* @since 2006-2-2 R+Q..9 P  
* @version 1.0 8V$pdz|[  
*/ ~kM# lh7At  
public class HeapSort implements SortUtil.Sort{ @*kQZRGK7  
d 2f   
/* (non-Javadoc) Bbk=0+ ^8I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a(- ^ .w  
*/ C{7 j<O  
public void sort(int[] data) { O3H dPQ  
MaxHeap h=new MaxHeap(); ?QuD:v ck  
h.init(data); . AJ(nJ)  
for(int i=0;i h.remove(); uEqL Dg  
System.arraycopy(h.queue,1,data,0,data.length); NVqJN$z  
} ^5n"L2 9V  
}cUq1r-bW  
private static class MaxHeap{ ghtvAG  
stn/  
void init(int[] data){ .;#Wf @V  
this.queue=new int[data.length+1]; @T>\pP]o  
for(int i=0;i queue[++size]=data; >S\D+1PV  
fixUp(size); fX"cQ&  
} %dA6vHI,  
} aYc*v5Q N3  
M'gw-^(  
private int size=0; -js:R+C528  
ro:B[XE  
private int[] queue; M@\A_x(Mas  
j?a^fcXB  
public int get() { x,)|;HXm  
return queue[1]; )nncCU W  
} Rs*]I\  
[Aqy%mbG  
public void remove() { XNODDH   
SortUtil.swap(queue,1,size--); `<}Q4p  
fixDown(1); dV_ClH &)  
} ECq(i(  
file://fixdown _J' _9M?>  
private void fixDown(int k) { /1A3 Sw  
int j; NrQGoAOw  
while ((j = k << 1) <= size) { -2Bkun4Pt  
if (j < size %26amp;%26amp; queue[j] j++; #6w\r&R6  
if (queue[k]>queue[j]) file://不用交换 %NH#8#';2  
break; /Z':wu\  
SortUtil.swap(queue,j,k); vRp#bScc  
k = j; xw[KP [(  
} 4}C^s\?z  
} ,|:TML  
private void fixUp(int k) { `v;9!ReZV  
while (k > 1) { ,ddoII  
int j = k >> 1; ;h|zNx0  
if (queue[j]>queue[k]) !h\>[O  
break; 6k569c{7  
SortUtil.swap(queue,j,k); v D"4aw  
k = j; RRXnj#<g  
} \9r1JP0  
} ~=xiMB;oH  
W@"s~I6  
} Fog4m=b`g  
Y8$Y]2  
} k&TZ   
q6R``  
SortUtil: >ucVrLm,X  
'E_M, Y  
package org.rut.util.algorithm; v2Lx4:dzi  
l~_] k  
import org.rut.util.algorithm.support.BubbleSort; SQ$|s%)oB  
import org.rut.util.algorithm.support.HeapSort; c*fMWtPp  
import org.rut.util.algorithm.support.ImprovedMergeSort; d2cslD d  
import org.rut.util.algorithm.support.ImprovedQuickSort; Kyn[4Bu!?  
import org.rut.util.algorithm.support.InsertSort; F@4TD]E0^  
import org.rut.util.algorithm.support.MergeSort; ;!RS q'L1  
import org.rut.util.algorithm.support.QuickSort; V]4g- CS[  
import org.rut.util.algorithm.support.SelectionSort; yiourR)H<  
import org.rut.util.algorithm.support.ShellSort; uP;qs8  
suo;+T=`I  
/** rf}@16O$'  
* @author treeroot WDr C  
* @since 2006-2-2 QkY]z~P4  
* @version 1.0 :9nqQJ+~  
*/ i -kj6N5  
public class SortUtil { ^a,Oi%  
public final static int INSERT = 1; 3mmp5 d  
public final static int BUBBLE = 2; ZeB"k)FI>  
public final static int SELECTION = 3; JI"&3H")g%  
public final static int SHELL = 4; c%?31 t  
public final static int QUICK = 5; hU: 9zLe  
public final static int IMPROVED_QUICK = 6; `=}w(V8pc  
public final static int MERGE = 7; )uG7 DR  
public final static int IMPROVED_MERGE = 8; y~16o   
public final static int HEAP = 9; ;_bZH%o.  
O{P@fv%~(o  
public static void sort(int[] data) { 3c%dErch  
sort(data, IMPROVED_QUICK); `lI(SS]w  
} 1]DPy+  
private static String[] name={ Oq[2<ept  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" |IN{8  
}; IF>dsAAI<  
#Qir%\*V  
private static Sort[] impl=new Sort[]{ Ll2yJ .C4  
new InsertSort(), q:iB}ch5R  
new BubbleSort(), (SH< ]@s  
new SelectionSort(), "#ctT-g`6  
new ShellSort(), `]u!4pP"  
new QuickSort(), /"q wC  
new ImprovedQuickSort(), AbqeZn  
new MergeSort(), pgp@Zw)r)k  
new ImprovedMergeSort(), %1\MW+  
new HeapSort() "W"2 Y(  
}; \ytF@"7  
F\K&$5J{p  
public static String toString(int algorithm){ t@_MWF  
return name[algorithm-1]; W##~gqZ/  
} xAZ-_}'tW  
Xyz w.%4c  
public static void sort(int[] data, int algorithm) { 1o Z!Up0  
impl[algorithm-1].sort(data); #0:N$'SZ  
} gG?sLgL:  
" A4.2  
public static interface Sort { [5"F=tT7WP  
public void sort(int[] data); f+WN=-F\  
} jPDk~|  
L\GjG&Y5  
public static void swap(int[] data, int i, int j) { mi`jY0e2  
int temp = data; `]T# uP<u  
data = data[j]; zyHHz\{  
data[j] = temp; fN|'aq*Pd  
} F4b$  
}   (4GDh%  
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