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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。 XY#.?<"Q8  
插入排序: dXfLN<nD>U  
F3hG8YX  
package org.rut.util.algorithm.support; E!_3?:[S_  
#a9O3C/MP  
import org.rut.util.algorithm.SortUtil; 5;+KMM:zb  
/** ,x$^^  
* @author treeroot 7=%Oev&0g-  
* @since 2006-2-2 kH8/8  
* @version 1.0 k.z(.uc=  
*/ <RKT |  
public class InsertSort implements SortUtil.Sort{ "}V_.I* +  
IC?(F]$%>  
/* (non-Javadoc) $<yhEvv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .5uqc.i"f  
*/ =*1NVi $n  
public void sort(int[] data) { e3ce?gk  
int temp; Lw2VdFi>E&  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); rr,w/[  
} \<ysJgqUG  
} ^e =G} N^  
} gB~^dv {  
?~b(iZ  
} p6Z|)1O]  
-We9 FO~  
冒泡排序: HItNd  
A,BYi$  
package org.rut.util.algorithm.support; z0OxJe  
c_8<N7 C  
import org.rut.util.algorithm.SortUtil; A; wT`c  
UWidT+'Sa  
/** J ZkQ/vp(  
* @author treeroot \ 'Va(}v  
* @since 2006-2-2 }B a_epM  
* @version 1.0 -Caj>K  
*/ 2?SbkU/3|P  
public class BubbleSort implements SortUtil.Sort{ 'NZ=DSGIy  
+:"0 %(  
/* (non-Javadoc) J>5rkR@/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GbclR:G  
*/ S'5Zy} +x  
public void sort(int[] data) { %IZd-N7i^  
int temp; uKXNzz  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 8xg^="OJ  
if(data[j] SortUtil.swap(data,j,j-1); 1)MDnODJ  
} &a;?o~%*]i  
} /-,\$@J5)  
} M(zZ8#  
} Z XGi> E  
QW$p{ zo  
} l<BV{Gl  
!1fZ7a  
选择排序: ),-gy~  
)Qd x  
package org.rut.util.algorithm.support; ddyX+.LMk  
PO?_i>mA  
import org.rut.util.algorithm.SortUtil; !3Pbu=(cte  
!Av9 ?Q:  
/** U(9_&sL  
* @author treeroot ^:]$m;v]  
* @since 2006-2-2 6tndC o;`  
* @version 1.0 ,|B-Nq  
*/ H#DvCw  
public class SelectionSort implements SortUtil.Sort { 8'HS$J;C  
{eV8h}KIl  
/* `/ayg:WSU  
* (non-Javadoc) P/girce0  
* 0'fswa)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XS">`9o!  
*/ kJp~'\b  
public void sort(int[] data) { tw>2<zmSi%  
int temp; -X~mW  
for (int i = 0; i < data.length; i++) { Cf3!Ud  
int lowIndex = i; qS2Nk.e]o  
for (int j = data.length - 1; j > i; j--) { Z sTtSM\Ac  
if (data[j] < data[lowIndex]) { [104;g <  
lowIndex = j; 6oNcj_?7?q  
} P0jr>j@^-  
} yB2h/~+  
SortUtil.swap(data,i,lowIndex); p.SipQ.P  
} :t]HY2  
} Pp s-,*m  
{@^;Nw%J  
} B+j]C$8}  
Z(T{K\)uN  
Shell排序: RHg-Cg`  
. \"k49M`  
package org.rut.util.algorithm.support; 0{|HRiQH9+  
k=hWYe$iAz  
import org.rut.util.algorithm.SortUtil; 8~]D!c8;a  
odsFgh  
/** AQg|lKv  
* @author treeroot akxNT_   
* @since 2006-2-2 Y8\P"q b  
* @version 1.0 /,I cs  
*/ .mt%8GM  
public class ShellSort implements SortUtil.Sort{ |zYOCDFf  
o)/Pr7Qn  
/* (non-Javadoc) 4=xi)qF/@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /.Ak'Vmi  
*/ %,kP_[!>Q  
public void sort(int[] data) { ^ RA'E@ "  
for(int i=data.length/2;i>2;i/=2){ rNii,_  
for(int j=0;j insertSort(data,j,i); FM >ae-L-  
} [d6!  
} b}3"v(  
insertSort(data,0,1); e "A"  
} qk1jmr  
`za,sRFR  
/** Sw\*$g]  
* @param data $'4 98%K2  
* @param j t'v t'[~,U  
* @param i qW0:q.   
*/ sQvRupYRO  
private void insertSort(int[] data, int start, int inc) { :oP LluW*  
int temp; :TH cI;PG8  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); tcuwGs>_  
} U]iI8c  
} QO/0VB42  
} 50W+!'  
["Ltqgx  
} 2T~cOH;T  
CWn\K R  
快速排序: D(#f`Fj;  
G@[8P?M=Z  
package org.rut.util.algorithm.support;  5&&4-  
2J ZR"P  
import org.rut.util.algorithm.SortUtil; &X$T "Dp  
=_7wd*,  
/** $*fJKR_N  
* @author treeroot Ae+)RBpc  
* @since 2006-2-2 /o9T [ ^\  
* @version 1.0 ,^UqE {  
*/ ;*<tU n^t  
public class QuickSort implements SortUtil.Sort{ u0q$`9J  
4wl1hp>,  
/* (non-Javadoc) $;qi -K3j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G*fo9eu5$  
*/ Wwq:\C  
public void sort(int[] data) { z)qYW6o%  
quickSort(data,0,data.length-1); tS'lJu  
} / (&E  
private void quickSort(int[] data,int i,int j){ 7A)\:k  
int pivotIndex=(i+j)/2; Km` SR^&\  
file://swap Gk,Bx1y  
SortUtil.swap(data,pivotIndex,j); sgX!4wG&Z  
2bp@m;g$  
int k=partition(data,i-1,j,data[j]); LL^KZ-  
SortUtil.swap(data,k,j); K4c:k; V  
if((k-i)>1) quickSort(data,i,k-1); Jz}nV1G(jz  
if((j-k)>1) quickSort(data,k+1,j); #DTKz]i?  
rs&]46i/p  
} q$Gs;gz^(  
/** B0fOAP1  
* @param data Zv u6/#  
* @param i Z/#_Swv  
* @param j Z*%;;&?  
* @return CLR1 CGnn7  
*/ O VV@  
private int partition(int[] data, int l, int r,int pivot) { m[9.'@ ye  
do{ : \+xXb{  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); >XD?zF)6  
SortUtil.swap(data,l,r); {3~VLdy  
} ?\}Gi(VVE  
while(l SortUtil.swap(data,l,r); { "y/;x/  
return l; lvs  XL  
} QU"WpkO  
-+#%]P8l  
} f%Q{}fC{*  
aF{_"X2  
改进后的快速排序: X'Ss#s>g  
 < $~lFV  
package org.rut.util.algorithm.support; _gvFs %J  
;[v!#+yml  
import org.rut.util.algorithm.SortUtil; 37#&:[w>  
_C?j\Wy  
/** CdolZW-!"  
* @author treeroot SepjF  
* @since 2006-2-2 K:PH: e  
* @version 1.0 TlqHj  
*/ IGdiIhH~2  
public class ImprovedQuickSort implements SortUtil.Sort { ^|]&"OaB Z  
BQ@7^E[  
private static int MAX_STACK_SIZE=4096; XH%L]  
private static int THRESHOLD=10; \iuR+I  
/* (non-Javadoc) lSj gN~:z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7aG.?Ca%  
*/ "s2_X+4oY  
public void sort(int[] data) { OxlA)$.hpu  
int[] stack=new int[MAX_STACK_SIZE]; '%N?r,x C  
b+rxin".  
int top=-1; ,T/Gv;wa2  
int pivot; D -}>28  
int pivotIndex,l,r; ~f/|bcep  
`c`VIq?  
stack[++top]=0; Ma YU%h0  
stack[++top]=data.length-1; `zd,^.i5~  
vCzZjGBY  
while(top>0){ *FS8]!Qg  
int j=stack[top--]; `KJ( .m  
int i=stack[top--]; SQp|  
( xs'D4  
pivotIndex=(i+j)/2; pGbfdX  
pivot=data[pivotIndex]; !ifU}qFzK  
DeO-@4+qKd  
SortUtil.swap(data,pivotIndex,j); FXQWT9Kk~_  
ke4E 1T-1n  
file://partition #EzBB*kP  
l=i-1; Dd3f@b[WX  
r=j; -;""l{  
do{ =o@;K~-  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 48^-]};  
SortUtil.swap(data,l,r); q t"D!S_  
} Wn%P.`o#  
while(l SortUtil.swap(data,l,r); l=@ B 'a  
SortUtil.swap(data,l,j); <_EKCk  
k[6J;/  
if((l-i)>THRESHOLD){ B}e/MlX3M  
stack[++top]=i; nzq   
stack[++top]=l-1; rTPgHK]?l  
} J2mHPV A3  
if((j-l)>THRESHOLD){ uYJS=NGNA  
stack[++top]=l+1; sS D8Sx/  
stack[++top]=j; AjzTszByu  
} -<W?it?D  
|23F@s1  
} S}6Ld(_  
file://new InsertSort().sort(data);  5NU{y+  
insertSort(data); Ln"wj O ,  
} ;kFD769DLw  
/** ClG%zE&i  
* @param data 2qMiX|Y  
*/ wQ_4_W  
private void insertSort(int[] data) { ~#_~DqbMZ5  
int temp; :@A&HkF  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Y },E3<  
} /K=OsMl2b8  
} u4x-GObJM  
} L2}\Ah"[  
*a9cBl'_  
} *"%TAe7?~+  
]\, ?u /  
归并排序: ["-rD y P  
z0"t]4s  
package org.rut.util.algorithm.support; <Ap_#  
X! d-"[  
import org.rut.util.algorithm.SortUtil; Gh;\"Qx  
l;?:}\sI=  
/** {u'szO}k  
* @author treeroot o`T.Zaik,  
* @since 2006-2-2 X+X:nL.t  
* @version 1.0 yD\q4G  
*/ ?N#I2jxaD  
public class MergeSort implements SortUtil.Sort{ !xs}CxEyA  
/MZ<vnN7f  
/* (non-Javadoc) *x36;6~W;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |9* Rnm_  
*/ !)s(Lv%]  
public void sort(int[] data) { L/k35x8  
int[] temp=new int[data.length]; c%&,(NJ]K  
mergeSort(data,temp,0,data.length-1); m#"_x{oa  
} 0'^M}&zCi  
}:m#}s  
private void mergeSort(int[] data,int[] temp,int l,int r){ `3TR`,=  
int mid=(l+r)/2; (tK_(gO  
if(l==r) return ; bz*@[NQ  
mergeSort(data,temp,l,mid); P1#g{f  
mergeSort(data,temp,mid+1,r); 7Cz~nin>7  
for(int i=l;i<=r;i++){ #S>N}<>  
temp=data; |J $A%27  
} Dri6\/0  
int i1=l; ;-db/$O  
int i2=mid+1; TTf j 5  
for(int cur=l;cur<=r;cur++){ wL;OQhI  
if(i1==mid+1) Fh~9(Y#  
data[cur]=temp[i2++]; Agc ss20.  
else if(i2>r) c`E>7Hjr-  
data[cur]=temp[i1++]; #MC#K{Xd  
else if(temp[i1] data[cur]=temp[i1++]; &;Ncc,jb  
else O,$*`RZpx  
data[cur]=temp[i2++]; z#{Y>.b  
} FZ*"^=)`G  
} " ityx?  
l\_!oa~  
} ?1Nz ,Lc$  
kQ\GVI11?  
改进后的归并排序: ]TvMT  
j.M]F/j  
package org.rut.util.algorithm.support; V&zeC/xSq  
oodA&0{)d  
import org.rut.util.algorithm.SortUtil; 6 AO(A *  
2;)IBvK  
/** /xn|d#4  
* @author treeroot 2> a&m>  
* @since 2006-2-2 ,xwiJfG; ]  
* @version 1.0 #  X (2  
*/ 1P)K@j  
public class ImprovedMergeSort implements SortUtil.Sort { pH~\~  
%1&X+s3  
private static final int THRESHOLD = 10; G^'We6<  
g;l K34{  
/* kNuvJ/St  
* (non-Javadoc) ^-%'ItVO  
* 8vx ca]DcV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "6,fIsU  
*/ \8(Je"S  
public void sort(int[] data) { 1^_W[+<S/  
int[] temp=new int[data.length]; >~g-  
mergeSort(data,temp,0,data.length-1); %! ` %21  
} ,[n9DPZ  
PqspoH 0OI  
private void mergeSort(int[] data, int[] temp, int l, int r) { enk`I$Xx  
int i, j, k; ch# )XomN  
int mid = (l + r) / 2; 3MQHoxX  
if (l == r) FH</[7f;@N  
return; _'p/8K5)=  
if ((mid - l) >= THRESHOLD) =CzGI|pb  
mergeSort(data, temp, l, mid); :k9T`Aa]  
else <?41-p-;  
insertSort(data, l, mid - l + 1); +G;<D@gSa0  
if ((r - mid) > THRESHOLD) h-p}Qil,  
mergeSort(data, temp, mid + 1, r); _DR@P(0>_  
else ^"Bhp:o2  
insertSort(data, mid + 1, r - mid); BOpZ8p'eH1  
:ok.[q  
for (i = l; i <= mid; i++) {  II'.vp  
temp = data; fhi}x(  
} ?0)K[Kd'Y  
for (j = 1; j <= r - mid; j++) { 4(8c L?J`0  
temp[r - j + 1] = data[j + mid]; UDHOcb  
} :1d;jx>  
int a = temp[l]; <gPM/ 4$G  
int b = temp[r]; k7uX!}  
for (i = l, j = r, k = l; k <= r; k++) { ~,,r\Y+  
if (a < b) { rDl/R^w"  
data[k] = temp[i++]; ll__A|JQ  
a = temp; Up Z 9g"  
} else { E}Cz(5  
data[k] = temp[j--]; s<*+=aIfu  
b = temp[j]; we}xGb.u  
} v:lkvMq|=  
} ",apO  
} V;^-EWNj  
+<$(ez  
/** X$xf@|<a  
* @param data G!%m~+",  
* @param l n)N!6u  
* @param i ,wf_o%'eW  
*/  x,: k/]  
private void insertSort(int[] data, int start, int len) { Ztk%uc8_lM  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); r@JMf)a]  
} Zzlt^#KLx  
} =lv(  
} *BxU5)O  
} ; &rxwL  
1G A.c:  
堆排序: !- [ ZQ  
z<Z0/a2'1  
package org.rut.util.algorithm.support; J"#6m&R_q  
)P? 0YC  
import org.rut.util.algorithm.SortUtil; ?121 as}z  
'7' 73  
/** <Z[Z&^  
* @author treeroot 8K^#$,.."  
* @since 2006-2-2 xlcCL?qQj  
* @version 1.0 -qpvVLR,  
*/ HM(X8iNt  
public class HeapSort implements SortUtil.Sort{ ju:}%'  
/ 1TK+E$  
/* (non-Javadoc) `D3q!e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M*'8$|Z  
*/ gHgqElr(  
public void sort(int[] data) { C{U*{0}  
MaxHeap h=new MaxHeap(); '`tFZfT  
h.init(data); W +Piqf*  
for(int i=0;i h.remove(); 6r^ZMW  
System.arraycopy(h.queue,1,data,0,data.length); o>*`wv  
} FoE}j   
%cs" PS  
private static class MaxHeap{ J3+qnT8X  
Vuy%7H  
void init(int[] data){ t(<k4ji,  
this.queue=new int[data.length+1]; /?BTET  
for(int i=0;i queue[++size]=data; IUAe6  
fixUp(size); !C4)P3k  
} AW;xlY= g  
} Sc3{Y+g  
 8\nka5  
private int size=0; :bo2H[U+  
3hkEjR  
private int[] queue; r}Vr_  
dm[JDVv|  
public int get() { Ce//; Op  
return queue[1]; j*?E~M.'1K  
} bs}SFTL  
E Id>%0s5  
public void remove() { f*V^HfiQb  
SortUtil.swap(queue,1,size--); RK*tZ  
fixDown(1); EWl9rF@I  
} ">B&dNrt  
file://fixdown s o: o b}  
private void fixDown(int k) { }.u[';q ]S  
int j; E690'\)31  
while ((j = k << 1) <= size) { 3p-SpUvp  
if (j < size %26amp;%26amp; queue[j] j++; .: wg@Z  
if (queue[k]>queue[j]) file://不用交换 rD6NUS  
break; 8xj_)=(sV!  
SortUtil.swap(queue,j,k); )4o k@^.  
k = j; { zL4dJw  
} F:Vl\YZ  
} , iEGf-!k  
private void fixUp(int k) { 8~!h8bkC  
while (k > 1) { dr8Q>(ZY  
int j = k >> 1; %U<lS.i  
if (queue[j]>queue[k]) >!PM5%G  
break; mE+=H]`.p  
SortUtil.swap(queue,j,k); PMiu "  
k = j; ?mi}S${g  
} `&)  
} 7lOAu]Zx  
Q=<&ew  
} u3cg&lEgT  
0/fwAp  
} *Qngx  
%YuFw|wO  
SortUtil: 0m4#{^Y  
g5nL7;`N  
package org.rut.util.algorithm; Vs>e"czfm/  
EE9eG31|r  
import org.rut.util.algorithm.support.BubbleSort; ?+c-m+;wj  
import org.rut.util.algorithm.support.HeapSort; JBV 06T_4o  
import org.rut.util.algorithm.support.ImprovedMergeSort; G]-\$>5R  
import org.rut.util.algorithm.support.ImprovedQuickSort; .F/l$4CQ  
import org.rut.util.algorithm.support.InsertSort; I_c?Ky8J_|  
import org.rut.util.algorithm.support.MergeSort; Q>z (!'dw  
import org.rut.util.algorithm.support.QuickSort; (-o}'l'mo  
import org.rut.util.algorithm.support.SelectionSort; 1mv5B t  
import org.rut.util.algorithm.support.ShellSort; fTy{`}>  
pm}_\_  
/** 1[Q~&QC  
* @author treeroot W$}2 $}r0U  
* @since 2006-2-2 9y\Ik/  
* @version 1.0 ?Rh[S  
*/ M(} T\R  
public class SortUtil { +>tSO!}[  
public final static int INSERT = 1; $?&distJ  
public final static int BUBBLE = 2; !( _qM  
public final static int SELECTION = 3; r-hb]!t  
public final static int SHELL = 4; nS!m1&DeD  
public final static int QUICK = 5; >)`*:_{  
public final static int IMPROVED_QUICK = 6; KrTlzbw&p\  
public final static int MERGE = 7; .%\R L/  
public final static int IMPROVED_MERGE = 8; $-]9/Ct  
public final static int HEAP = 9; Fe2iG-ec  
8P%Jky&(  
public static void sort(int[] data) { EBmkKiI;  
sort(data, IMPROVED_QUICK); ?;rRR48T9E  
} 9:!V":8q  
private static String[] name={ >(gbUW  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" B .?@VF  
}; P!R`b9_U  
H/0b3I^  
private static Sort[] impl=new Sort[]{ |i(@1 l  
new InsertSort(), 9]S;%:64  
new BubbleSort(), 8[)"+IFN  
new SelectionSort(), 9*a"^  
new ShellSort(), oC TSV  
new QuickSort(), LD;! s  
new ImprovedQuickSort(), Q-e(>=Gv_  
new MergeSort(), |pT[ZT|}G  
new ImprovedMergeSort(), @ +>>TGC  
new HeapSort() nI`9|W  
}; 5N#Sic M  
(]"`>, ray  
public static String toString(int algorithm){ >)F)@KAuN4  
return name[algorithm-1]; [WR*u\FF  
} V4<f4|IL  
"6WE6zq   
public static void sort(int[] data, int algorithm) { &7w*=f8I  
impl[algorithm-1].sort(data); }vX 1@n7T6  
} <a(739IF  
[TmZ\t!5$  
public static interface Sort { `$] ZT>&  
public void sort(int[] data); \uOR1z  
} _BND{MsX  
NE?tfj  
public static void swap(int[] data, int i, int j) { fc^d3wH0L  
int temp = data; hIo ^/_K  
data = data[j]; DPWnvd  
data[j] = temp; )5<c8lzp  
} IP#qT `=}  
} <[z9*Tm  
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