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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。 pt- 1>Ui  
插入排序: \x+"1  
ajALca4  
package org.rut.util.algorithm.support; {AMoE +U  
M]M(E) *5  
import org.rut.util.algorithm.SortUtil; -87]$ ax  
/** @2)ImgK[  
* @author treeroot ^Ts8nOGMh  
* @since 2006-2-2 2Jc9}|,  
* @version 1.0 dX5|A_Ex  
*/ Rz!!;<ye8  
public class InsertSort implements SortUtil.Sort{ ELQc: t -2  
TeWpdUCO  
/* (non-Javadoc) $(eqZ<y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?<-ins  
*/ oY0`igH  
public void sort(int[] data) { UqZ#mKi  
int temp; MuQ'L=iJ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Yq0=4#_  
} 'K|tgsvgme  
} iZDZ/hohv  
} N3rQ]HZiP  
c9)5G+   
} lM-*{<B  
)m[dfeqd +  
冒泡排序: "=\@ a=  
5RhP^:i@C  
package org.rut.util.algorithm.support; D!CuE7}  
1rQKHC:|  
import org.rut.util.algorithm.SortUtil; S K7b]J>  
'or8CGr^p  
/** !`EhVV8u-_  
* @author treeroot )NCkq~M  
* @since 2006-2-2 'ai!6[|SD  
* @version 1.0 DX%D8atrr  
*/ qb1[-H  
public class BubbleSort implements SortUtil.Sort{ {kp^@  
%e'Z.vm  
/* (non-Javadoc) iHL`r1I!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t`y*oRy  
*/ [W2GLd]  
public void sort(int[] data) { JypXQC}~  
int temp; CxRh MhvP  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Y;6%pm$  
if(data[j] SortUtil.swap(data,j,j-1); 7O.{g  
} 1I -LGe[Q  
} +F3`?6UXz  
} lc2RMu  
} FkJX)  
J=C63YB  
} =FtJa3mHK  
K]Onb{QY  
选择排序: K JX@?1"  
e<[0H 8  
package org.rut.util.algorithm.support; OGqsQ  
OlF5~VAbfb  
import org.rut.util.algorithm.SortUtil; v9R"dc]0h  
F_&bE@k  
/** 0[T>UEI?  
* @author treeroot WbP*kV{  
* @since 2006-2-2 jwd{CN%  
* @version 1.0 &9F(uk=X  
*/ T^~9'KDd  
public class SelectionSort implements SortUtil.Sort { :[ AP^  
e=%6\&q  
/* `[zd  
* (non-Javadoc) ]~A<Q{  
* ?Ok@1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2?bE2^6  
*/ d$(>=gzBQ  
public void sort(int[] data) {  {!9i8T  
int temp; wu2C!gyBo  
for (int i = 0; i < data.length; i++) { ST[+k  
int lowIndex = i; 2>bV+[@B  
for (int j = data.length - 1; j > i; j--) { _cW6H B^j  
if (data[j] < data[lowIndex]) { ~8 w(M  
lowIndex = j; M?fRiOj  
} /K@{(=n  
} ?dcR!-3  
SortUtil.swap(data,i,lowIndex); q"Z!}^{  
} WgK|r~  
} QP?Deltp  
$=-Q]ld&]  
} 5Si\hk:o  
'o*:~n  
Shell排序: _noQk3N  
\"u3 x.!  
package org.rut.util.algorithm.support; A->y#KQ  
'F[ C 4  
import org.rut.util.algorithm.SortUtil; }&mFpc  
6b8@6;&LI  
/** 0piBK=tE/  
* @author treeroot '#b7Z?83C  
* @since 2006-2-2 _7M!b 9oA  
* @version 1.0 ToB^/ n[  
*/ 5@{+V!o,  
public class ShellSort implements SortUtil.Sort{ o-D,K dY  
)5Bkm{v3  
/* (non-Javadoc) U5z}i^8a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {)vue0 vP  
*/ Q$(0Nx<  
public void sort(int[] data) { gxku3<S  
for(int i=data.length/2;i>2;i/=2){ EdPN=  
for(int j=0;j insertSort(data,j,i); Kx;DmwX-  
} OJ'x>kE  
} M5Twulz/w  
insertSort(data,0,1); 'C9H6)Zq)  
} oYG].PC  
.u_k?.8|  
/** XFg.Z+ #  
* @param data 0kD8wj%  
* @param j Yv`8{_8L  
* @param i $qx&\@O  
*/ Sl{nS1q  
private void insertSort(int[] data, int start, int inc) { -*K!JC-  
int temp; `>q|_w \e  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); B~u_zZE  
} s\`Vr;R:|  
} |;-,(509  
} jbHk  
v^lR]9;  
} ` tkd1M  
ZQ^kS9N i  
快速排序: $nOd4{s_  
}bv0~}G4  
package org.rut.util.algorithm.support; yMNLsR~rh  
,Dz2cR6  
import org.rut.util.algorithm.SortUtil; x,Cc$C~YP  
l}DCK  
/** IKK<D'6  
* @author treeroot @J~y_J{  
* @since 2006-2-2 G@) I  
* @version 1.0 NS l$5E  
*/ 5g- apod  
public class QuickSort implements SortUtil.Sort{ vl@t4\@3  
1 ]@}+H  
/* (non-Javadoc) 9 @yP;{Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p 0.?R  
*/ LC/w".oq?  
public void sort(int[] data) { ^/W 7Xd(s  
quickSort(data,0,data.length-1); tH:K6^oR  
} }eX_p6bBw  
private void quickSort(int[] data,int i,int j){ X*~NE\  
int pivotIndex=(i+j)/2; @Y>3-,o,S  
file://swap +fhyw{  
SortUtil.swap(data,pivotIndex,j); |7Q8WjCQ{m  
R0<ka[+  
int k=partition(data,i-1,j,data[j]); n;"4`6L~  
SortUtil.swap(data,k,j); z#!xqIg0  
if((k-i)>1) quickSort(data,i,k-1); 7[-jr;v  
if((j-k)>1) quickSort(data,k+1,j); v.1= TBh  
(oxe\Qk  
} 'D-#,X C  
/** &F}1\6{fL  
* @param data &bJ98 Nxl  
* @param i =3=KoH/'  
* @param j zJMKgw,i*  
* @return l\^q7cXG  
*/ LeW.uh3.  
private int partition(int[] data, int l, int r,int pivot) { qD\%8l.]Z  
do{ (nrrzOax  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); co3H=#2a  
SortUtil.swap(data,l,r); \i-jME(sN  
} c 3@SgfKmk  
while(l SortUtil.swap(data,l,r); Vk_*]wU  
return l; |Z;w k&  
} $EJ*x$  
|?Q(4(D`*  
} u,F d[[t  
E|9LUPcb  
改进后的快速排序: .bl0w"c^qq  
}bznx[4?I  
package org.rut.util.algorithm.support; L>UYR++<6  
A!k}  
import org.rut.util.algorithm.SortUtil; =D xJt7J1  
y`Pp"!P"O  
/** ~~1~_0?e  
* @author treeroot Y%:p(f<  
* @since 2006-2-2 lSyp k-c  
* @version 1.0 9L#B"lh  
*/ )C2d)(baEJ  
public class ImprovedQuickSort implements SortUtil.Sort { 1|w,Z+/  
 ioi  
private static int MAX_STACK_SIZE=4096; oz5o=gt7  
private static int THRESHOLD=10; LO61J_J<  
/* (non-Javadoc) YLd 5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d L%E0o  
*/ Xy*X4JJh^  
public void sort(int[] data) { ,:\2Lf  
int[] stack=new int[MAX_STACK_SIZE]; na']{a 1K  
;(0:6P8I  
int top=-1; `A <yDy  
int pivot; Ux icqkX  
int pivotIndex,l,r; 24N,Bo 3  
Dlj=$25  
stack[++top]=0; N/?Ms rZw  
stack[++top]=data.length-1; HHnabSn}{q  
MF\n@lX  
while(top>0){ jX&&@zMq  
int j=stack[top--]; \wRr6-!_  
int i=stack[top--]; \>=YxB q  
J#V `W&\,6  
pivotIndex=(i+j)/2; w78Ius,  
pivot=data[pivotIndex]; lIjHd#q-C  
cHsJQU*K6  
SortUtil.swap(data,pivotIndex,j); h/TPd]  
Bh' vr3|  
file://partition eBAB7r/7  
l=i-1; KR^peWR  
r=j; ^YIOS]d>8#  
do{ 8v^i%Gg  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); bOz\-=au  
SortUtil.swap(data,l,r); LVEVCpp@  
} <$yer)_J!k  
while(l SortUtil.swap(data,l,r); hTG d Uw]  
SortUtil.swap(data,l,j); 8]?1gDS|9O  
W=EO=}l#  
if((l-i)>THRESHOLD){ UiZ61lw  
stack[++top]=i; Gm2rjpZeq  
stack[++top]=l-1; UdI>x 4bI  
} DpS6>$v8t  
if((j-l)>THRESHOLD){ o mjLQp[%  
stack[++top]=l+1; rFy9K4D  
stack[++top]=j; Na~_=3+a  
} >Au<y,Tw  
>A,WXzAK}S  
} ?3Jh{F_+  
file://new InsertSort().sort(data); 2mlE;.}8  
insertSort(data); $GO'L2oLwn  
} ^p7(  
/** rbtV,Y  
* @param data 4P~<_]yf  
*/ \~)573'  
private void insertSort(int[] data) { GO)rpk9  
int temp; %|,<\~P  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); RrZjC  
} Nz}Q"6L  
} #wjBMR%  
} .FXQ,7mZ-  
654%X(:q  
} ;Z`)*TRp4  
kTk?[BK  
归并排序: {f&ga  
_uu:)%  
package org.rut.util.algorithm.support; :> q?s  
Y>#c2@^i<  
import org.rut.util.algorithm.SortUtil; j d8 1E  
OXacI~C  
/** *(scSC>  
* @author treeroot ]Cz16e&=2  
* @since 2006-2-2 qJ/C*Wqic  
* @version 1.0 8Cqs@<r4Od  
*/ "|G,P-5G"  
public class MergeSort implements SortUtil.Sort{ *"CvB{XF&Z  
lhI;K4#  
/* (non-Javadoc) |K_B{v.   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f!J^vDl  
*/ ^`!Daqk  
public void sort(int[] data) { e"CLhaT  
int[] temp=new int[data.length]; )g --=w3  
mergeSort(data,temp,0,data.length-1); aOD"z7}U  
} @ubz?5  
\fz j fZ1n  
private void mergeSort(int[] data,int[] temp,int l,int r){ LX fiSM{o  
int mid=(l+r)/2; Ww(_EW  
if(l==r) return ; <di_2hN  
mergeSort(data,temp,l,mid); ~?&ijhZ  
mergeSort(data,temp,mid+1,r); G'py)C5;  
for(int i=l;i<=r;i++){ w?tKL0c  
temp=data; o/zCXZnw#  
} X2uX+}h*tA  
int i1=l; 0l=}v%D  
int i2=mid+1; EC~t 'v  
for(int cur=l;cur<=r;cur++){ JB(;[#'~  
if(i1==mid+1) R,\ r{@yrz  
data[cur]=temp[i2++]; 0c5_L6_z  
else if(i2>r) V3oAZ34)  
data[cur]=temp[i1++]; 1 ~7_!  
else if(temp[i1] data[cur]=temp[i1++]; VL{#.;QQa  
else `aUp&8{  
data[cur]=temp[i2++]; @,MdvR+a  
} Vd0GTpB?1  
} qj6`nbZ{va  
t4IJ%#22  
} 0uz"}v)  
Rpk`fxAO  
改进后的归并排序: `"H?nf0  
4cQ5E9  
package org.rut.util.algorithm.support; mvgm o  
Flxo%g};  
import org.rut.util.algorithm.SortUtil; `0^i #  
*jK))|%  
/** i-?zwVmn  
* @author treeroot @;6}xO2  
* @since 2006-2-2 cWc)sb  
* @version 1.0 re!8nuBsA  
*/ ]CZLaID~  
public class ImprovedMergeSort implements SortUtil.Sort { vVYduvw  
V8yX7yx  
private static final int THRESHOLD = 10; pNlisS  
^JtHTLHL=  
/* Y*k<NeDyn  
* (non-Javadoc) WO-WoPO  
* ^eW.hNg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]uvbQ.l_t  
*/ 5gD)2Q6  
public void sort(int[] data) { Y/0O9}hf  
int[] temp=new int[data.length]; .dCP8|  
mergeSort(data,temp,0,data.length-1); u =kSs  
} 6Qb)Uq3}]  
*?D2gaCta  
private void mergeSort(int[] data, int[] temp, int l, int r) { ? sW`**j  
int i, j, k; $/TA5h  
int mid = (l + r) / 2; ? ~Zrd  
if (l == r) <S$21NtM87  
return; i8Y gG0[)  
if ((mid - l) >= THRESHOLD) wWw/1i:|'  
mergeSort(data, temp, l, mid); k_n{Mss'9  
else n ;5?^Un%  
insertSort(data, l, mid - l + 1); LtztjAm.  
if ((r - mid) > THRESHOLD) uAs*{:4n  
mergeSort(data, temp, mid + 1, r); LH#LBjOZk  
else l :Nxl  
insertSort(data, mid + 1, r - mid); z8|9WZ:  
O{#Cddt:r  
for (i = l; i <= mid; i++) {  -C  ON  
temp = data; G=cH61  
} )6E*Qz  
for (j = 1; j <= r - mid; j++) { A9UaLSe  
temp[r - j + 1] = data[j + mid]; !>y}Xq{bm3  
} +)JqEwCrq  
int a = temp[l]; |u;BAb  
int b = temp[r]; / JeqoM"x  
for (i = l, j = r, k = l; k <= r; k++) { W<91m*  
if (a < b) { &PuJV +y  
data[k] = temp[i++]; s|r7DdI  
a = temp; THgzT\_zq  
} else { `U_>{p&x  
data[k] = temp[j--]; XOg(k(&T  
b = temp[j]; !otq X-  
} W4*BR_H&*  
} ~e<'t4  
} K}`p_)(  
K4/P(*r`  
/** DG*o w^  
* @param data @Q\$dneY  
* @param l %C6zXiO"  
* @param i '&:x_WwVrO  
*/ 8+a<#? ;  
private void insertSort(int[] data, int start, int len) { {2k< k(,  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 0nz@O^*g(  
} bC>>^?U1m  
} pt%~,M _  
} 1+tt'  
} DgT.Lku?  
$;i$k2n:  
堆排序: 60%~+oHi~  
Usf"K*A  
package org.rut.util.algorithm.support; dh;MpE  
0 ,Qj:  
import org.rut.util.algorithm.SortUtil; y?z_^ppj  
gVA}?t;  
/** tD7C7m  
* @author treeroot cvV?V\1f  
* @since 2006-2-2 3b)T}g  
* @version 1.0 VgsCwJ9w  
*/ 2<o[@w  
public class HeapSort implements SortUtil.Sort{ /W$y"!^)J1  
bC4* w O  
/* (non-Javadoc) #1dTM-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *_/eAi/WG  
*/ @EP{VV  
public void sort(int[] data) { RQS:h]?:l  
MaxHeap h=new MaxHeap(); *CY6 a  
h.init(data); '"]>`=R  
for(int i=0;i h.remove(); 0?Tk* X  
System.arraycopy(h.queue,1,data,0,data.length); W[X!P)=w]  
} 5?{ >9j5  
_l!U[{l*d  
private static class MaxHeap{ *o e0=  
w4fJ`,  
void init(int[] data){ &PBWJ?@O)r  
this.queue=new int[data.length+1]; a.}:d30  
for(int i=0;i queue[++size]=data; 4R*<WdT(  
fixUp(size); h/0-Mrk;e  
} lmtQr5U  
} N<Z)b!o%u  
7{+Io  
private int size=0; `b#nC[b6|v  
X:SzkkVl7  
private int[] queue; FQ|LA[~  
;TV'PJ  
public int get() { $, &g AU  
return queue[1]; \B>[je-d  
} ? W2I1HEy  
FM"GK '  
public void remove() { COan) <Ku  
SortUtil.swap(queue,1,size--); n L+YL  
fixDown(1); 7Ysy\gZ&wp  
} "Yfr"1RmO  
file://fixdown AYPf)K;%  
private void fixDown(int k) { BV }(djx  
int j; x)#<.DX  
while ((j = k << 1) <= size) { <7FP"YU  
if (j < size %26amp;%26amp; queue[j] j++; ttbQergS  
if (queue[k]>queue[j]) file://不用交换 M~z (a3@[V  
break; }lC64;yo  
SortUtil.swap(queue,j,k); g"Q}h  
k = j; 3h[:0W!C]  
} q(&^9"  
} /[nZ#zj!3  
private void fixUp(int k) { cEdz;kbUM  
while (k > 1) { *<.WL"Qhl  
int j = k >> 1; Yn$>QS 4  
if (queue[j]>queue[k]) SD|4ybK>d  
break; c5iormb"#  
SortUtil.swap(queue,j,k); m.HX2(&\3  
k = j; qtdxMX]iR  
} 9#s95R O  
} iB}LnC:  
S4k^&$;  
} 36^C0uNdX  
9&XV}I,~?|  
} h$aew63  
VM<oUKh_3  
SortUtil: V 4\^TO`q=  
1%/ NL?8#  
package org.rut.util.algorithm; hk"9D<&i>b  
a_ 9|xI  
import org.rut.util.algorithm.support.BubbleSort; 6_9:Eb=^v!  
import org.rut.util.algorithm.support.HeapSort; `b^#quz  
import org.rut.util.algorithm.support.ImprovedMergeSort; oA!5dpNhU  
import org.rut.util.algorithm.support.ImprovedQuickSort; - 5o<Q'(  
import org.rut.util.algorithm.support.InsertSort; k}I5x1>&  
import org.rut.util.algorithm.support.MergeSort; C>JekPeM  
import org.rut.util.algorithm.support.QuickSort; x  tYV"  
import org.rut.util.algorithm.support.SelectionSort; $K6?(x_  
import org.rut.util.algorithm.support.ShellSort; V`R)#G>IH%  
"5o;z@(  
/** RFZU}.*K$  
* @author treeroot Pghva*&  
* @since 2006-2-2 AT%* ~tr  
* @version 1.0 As6)_8w  
*/ Yhc6P%{Z^  
public class SortUtil { M!&_qj&N,  
public final static int INSERT = 1; HIPcZ!p  
public final static int BUBBLE = 2; IFC%%I t5,  
public final static int SELECTION = 3; 0.J1!RIK/  
public final static int SHELL = 4; {FV,j.D  
public final static int QUICK = 5; vB{; N  
public final static int IMPROVED_QUICK = 6; .-('C> @  
public final static int MERGE = 7; k7yv>iN  
public final static int IMPROVED_MERGE = 8; y"|K |QT  
public final static int HEAP = 9; t`<}UWAH+  
C}(<PNT  
public static void sort(int[] data) { zqekkR]  
sort(data, IMPROVED_QUICK); ]ZR{D7.?  
} P<cMP)+K  
private static String[] name={ >+Sv9S  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 5eiZs  
}; {(m+M  
ibZt2@GB)I  
private static Sort[] impl=new Sort[]{ pPiYPfs  
new InsertSort(), TZ&4  
new BubbleSort(), n=<NFkeX  
new SelectionSort(), ^MWEfPt  
new ShellSort(), [ 5CS}FB  
new QuickSort(), :"OZc7 ~  
new ImprovedQuickSort(), RsqRR`|X?  
new MergeSort(), !q~X*ZKse  
new ImprovedMergeSort(), 7gVh!rm  
new HeapSort() J^+_8  
}; #;\L,a|>*  
MO));M)  
public static String toString(int algorithm){ Lf,CxZL5  
return name[algorithm-1]; 'L>&ZgLy  
} rQu  
+Fc ET  
public static void sort(int[] data, int algorithm) { KXoL,)Hl  
impl[algorithm-1].sort(data); blRY7  
} kP!%|&w;  
Tm%$J  
public static interface Sort { fs2m N1  
public void sort(int[] data); XPHQAo[(s  
} r.^0!(d  
PtQQZ"ept  
public static void swap(int[] data, int i, int j) { k%EWkM)?  
int temp = data; 2gQY8h8  
data = data[j]; Pcs^@QP  
data[j] = temp; 8 *4@-3Sx  
} _-4n ~(  
} A|p@\3 P*A  
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