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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。 (89Ji'dc  
插入排序: <47k@Ym   
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package org.rut.util.algorithm.support; *m9{V8Yi2  
hoenQ6N^:  
import org.rut.util.algorithm.SortUtil; XVt/qb%)r  
/** e+.\pe\  
* @author treeroot l4rMk^>>  
* @since 2006-2-2 a d9CsvW  
* @version 1.0 4WC9US-k  
*/ C-m*?))go  
public class InsertSort implements SortUtil.Sort{ `5q ;ssu  
yEq#Dr  
/* (non-Javadoc) 5Fm av5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8TE>IPjm  
*/ yhpz5[AuO  
public void sort(int[] data) { &SH1q_&BQ  
int temp; ` J]xP$)  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); WF2NG;f=  
} rAb&I"\ZY  
} >O#grDXb  
} 24u x  
iXFP5a>|  
} c pk^!@c  
9'nH2,_  
冒泡排序: )0k']g5  
n2 {SV  
package org.rut.util.algorithm.support; }s_hD`'  
[84F0 9HU  
import org.rut.util.algorithm.SortUtil; =>|C~@C?  
PFM' & ;V  
/** }XR : 2  
* @author treeroot .m;G$X|3U  
* @since 2006-2-2 )55\4<ty  
* @version 1.0 2#vv$YD  
*/ `pL^}_>|GM  
public class BubbleSort implements SortUtil.Sort{ Zp&@h-%YoD  
9XLFHV("  
/* (non-Javadoc) S|em[D[Y^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ('C7=u&F  
*/ e$e#NoN  
public void sort(int[] data) { ";x+1R.d  
int temp; tnz+bX26  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Ub_4yN;  
if(data[j] SortUtil.swap(data,j,j-1); yHeEobvb  
} 4nqoZk^R  
} c>HK9z{  
} \, &9  
} @?kM'*mrZM  
$g10vF3  
} Pm+tQ  
kM/Te{<  
选择排序: EpYy3^5d  
UG;Y^?Ppe5  
package org.rut.util.algorithm.support; x;LzG t:w  
JWv{=_2w  
import org.rut.util.algorithm.SortUtil; J~#$J&iKh  
>?lOE -}^  
/** WG u%7e]  
* @author treeroot P[ r];e  
* @since 2006-2-2 47r&8C+&\  
* @version 1.0 X^@ I].  
*/ 17|np2~  
public class SelectionSort implements SortUtil.Sort { vUA0FoOp  
Sv'y e  
/* 5D Y\:AF  
* (non-Javadoc) W_`A"WdT.  
* HYK!}&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]Mi.f3QlO6  
*/ S'LZk9E  
public void sort(int[] data) { )IL #>2n?  
int temp; K_/zuTy  
for (int i = 0; i < data.length; i++) { EW<kI+0D  
int lowIndex = i; 3;[DJ5  
for (int j = data.length - 1; j > i; j--) { A"v{~  
if (data[j] < data[lowIndex]) { MZ> 6o5K|  
lowIndex = j; p(F" /  
} /9pM>Cd*Z  
} IA&L]  
SortUtil.swap(data,i,lowIndex); @n&<B`/  
} I$t3qd{H&  
} S4^N^lQ]  
c{+AJ8  
} }8-\A7T  
? "/ fPV-  
Shell排序: Iu@y(wyg  
w Y   
package org.rut.util.algorithm.support; SqA J-_~  
Z8#Gwyinx  
import org.rut.util.algorithm.SortUtil; S8d8%R~1=h  
#R0A= !  
/** .@q-B+Eg  
* @author treeroot ?, r~=  
* @since 2006-2-2 FR[ B v  
* @version 1.0 uX/$CM  
*/ OZY,@c  
public class ShellSort implements SortUtil.Sort{ H)w(q^i  
S~Z|PLtF  
/* (non-Javadoc) ^Xb7[ +I6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) = &wmWy  
*/ l_tw<`Ep  
public void sort(int[] data) { epHJ@W@#  
for(int i=data.length/2;i>2;i/=2){ ulFzZHJ  
for(int j=0;j insertSort(data,j,i); +!IQj0&'Y3  
} @Ky> 9m{  
} g7V8D  
insertSort(data,0,1); l_'[27  
} )d\ j I  
(>4aibA'P  
/** X~=xXN.  
* @param data z4#(Ze@u~_  
* @param j !" #9<~Q,p  
* @param i GNf482  
*/ fWc|gq  
private void insertSort(int[] data, int start, int inc) { _@mRb^  
int temp; l>gI&1)%  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); j(:I7%3&(*  
} h^9"i3H  
} cJo\#cr  
} %@a8P  
IQ< MyB(  
} F~:O.$f]G  
@`opDu!  
快速排序: #`TgZKDg2  
TGXa,A{  
package org.rut.util.algorithm.support; B vo5-P6XY  
g]c[O*NTL  
import org.rut.util.algorithm.SortUtil; |Xi%   
u 's`*T@.  
/** 3A:q7#m  
* @author treeroot Wz4&7KYY  
* @since 2006-2-2 gWABY%!}  
* @version 1.0 v~3B:k:?l  
*/ ml0.$z  
public class QuickSort implements SortUtil.Sort{ v2r&('pV  
?\KM5^eX  
/* (non-Javadoc) Hs?e0Z=N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E!BPE>  
*/ {>LIMG-f  
public void sort(int[] data) { Pg9hW  
quickSort(data,0,data.length-1); tWTKgbj(  
} /+*#pDx/zW  
private void quickSort(int[] data,int i,int j){ R[z`:1lo  
int pivotIndex=(i+j)/2; FGO[ |]7IN  
file://swap l0&EZN0V2  
SortUtil.swap(data,pivotIndex,j); SK1!thQy  
b*a2,MiM  
int k=partition(data,i-1,j,data[j]); |Fm6#1A@  
SortUtil.swap(data,k,j); ~R$~&x(b  
if((k-i)>1) quickSort(data,i,k-1); Uoya3#4 G  
if((j-k)>1) quickSort(data,k+1,j); [ EFMu;q  
2?m.45`  
} ETp%s{8  
/** y@2epY?{  
* @param data H>9CW<8  
* @param i alh >"9~!  
* @param j `Y-|H;z  
* @return o1&:ry  
*/ -<jL~][S  
private int partition(int[] data, int l, int r,int pivot) { v_e9}yI   
do{ J"=1/,AS  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ;.xoN|Per  
SortUtil.swap(data,l,r); J q{7R  
} b'MSkEiQG  
while(l SortUtil.swap(data,l,r); Wg{k$T_>  
return l; L %ip>  
} ReiB $y6  
+^*iZ6{+7  
} PJxH7|GSi  
5@*'2rO&!  
改进后的快速排序: Hf'G8vW  
(~zd6C1.  
package org.rut.util.algorithm.support; K{n{KB&_&  
#;n +YM">:  
import org.rut.util.algorithm.SortUtil; G?f\>QSZ  
pa}*E  
/** Z_\C*^  
* @author treeroot +&zYZA8v  
* @since 2006-2-2 6v,z@!b  
* @version 1.0 1@u2im-O  
*/ k = ?h~n0M  
public class ImprovedQuickSort implements SortUtil.Sort { 1qV@qz  
A:(*y 2  
private static int MAX_STACK_SIZE=4096; LIg{J%  
private static int THRESHOLD=10; Dnc(l(  
/* (non-Javadoc) 1n%?@+W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =rdY @  
*/ 1&fc1uYB4  
public void sort(int[] data) { gP+fN$5'd  
int[] stack=new int[MAX_STACK_SIZE]; eh,~^x5  
iU6Gp-<M ,  
int top=-1; |ZodlYF  
int pivot; +T9:Udi  
int pivotIndex,l,r; BpX6aAx  
BBcV9CGU  
stack[++top]=0; LZMYr  
stack[++top]=data.length-1; hhoEb(BA  
Y#!h9F  
while(top>0){ 4f(Kt,0  
int j=stack[top--]; V\(:@0"  
int i=stack[top--]; V]*b4nX7  
u?s VcD[  
pivotIndex=(i+j)/2; ng:Q1Q9N  
pivot=data[pivotIndex]; 0%!rx{f#\  
:xKcpY[{  
SortUtil.swap(data,pivotIndex,j); Y>jiXl?&  
AeAp0cbet  
file://partition ;3_l@dP"  
l=i-1; 7ugZE93!  
r=j; 7d92 Pe  
do{ [{C )LDN  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); s=?g\oR  
SortUtil.swap(data,l,r); ]%Zz \Q  
} NEa>\K<\  
while(l SortUtil.swap(data,l,r); FKe,qTqa  
SortUtil.swap(data,l,j); 2lL,zFAq  
PRNoqi3sY  
if((l-i)>THRESHOLD){ ~ %B<  
stack[++top]=i; ]Qm]I1P  
stack[++top]=l-1; @ 49nJi  
} fDx9iHGv  
if((j-l)>THRESHOLD){ nx0K$ Ptq  
stack[++top]=l+1; i-yy/y-N  
stack[++top]=j; @ P|LLG'  
} OFje+S  
k+1|I)z  
} ?eV4 SH  
file://new InsertSort().sort(data); Y.^=]-n,  
insertSort(data); dMR3)CO  
} lI>SUsQFfm  
/** 9n}p;3{f  
* @param data !|c|o*t{  
*/ +2 Af&~T  
private void insertSort(int[] data) { _)]CzBRq\6  
int temp; !x'/9^i~v  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Z,iHy3`  
} u1xSp<59C  
} G%d (  
} ioPUUUb)  
yoAfc  
} |p$spQ  
%'0T Xr$  
归并排序: _HhbIU  
" vtCTl~t  
package org.rut.util.algorithm.support; NH_<q"gT  
!nAX$i~  
import org.rut.util.algorithm.SortUtil; ? `J[[",  
~}Rj$%_  
/** cyJG8f  
* @author treeroot h<~7"ONhV  
* @since 2006-2-2 soCi[j$lH  
* @version 1.0 [ Bl c^C{f  
*/ }B~If}7  
public class MergeSort implements SortUtil.Sort{ svXR<7) #  
/PsnD_s]5  
/* (non-Javadoc) }jill+]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A=Ss6 -Je  
*/ %c[V  
public void sort(int[] data) { B7]MGXC  
int[] temp=new int[data.length]; Ie%EH  
mergeSort(data,temp,0,data.length-1); /r_~: 3F  
} H ty0qr3  
,-z9 #t  
private void mergeSort(int[] data,int[] temp,int l,int r){ KF4PJi;*  
int mid=(l+r)/2; z5TuGY b<  
if(l==r) return ; Is+O  
mergeSort(data,temp,l,mid); N!`e}Z6S  
mergeSort(data,temp,mid+1,r); 0?>dCu\  
for(int i=l;i<=r;i++){ c&L"N!4z  
temp=data; `=7j$#6U  
} ;j2vHU#q-  
int i1=l; Qyy.IPTP  
int i2=mid+1; kY'T{Sm1^  
for(int cur=l;cur<=r;cur++){ ]5%/3P,/  
if(i1==mid+1) }- Wa`t7U  
data[cur]=temp[i2++]; "+unS)M;Y  
else if(i2>r) ;t+ub8  
data[cur]=temp[i1++]; jbR0%X2  
else if(temp[i1] data[cur]=temp[i1++]; '? jlH0;  
else jMpD+Mb  
data[cur]=temp[i2++]; 0>zbCubPH  
} H'HSD,>(  
} U#U]Pt  
]n-:Yv5 W  
} 9Vf1Xz  
o: ;"w"G  
改进后的归并排序: 0 Us5  
zz& ?{vJ  
package org.rut.util.algorithm.support; cYqfsd# B  
H8"@iE,  
import org.rut.util.algorithm.SortUtil; $HJwb-I  
R"K#7{p9  
/** GaSPJt   
* @author treeroot 85GKymz$P  
* @since 2006-2-2 (64yg  
* @version 1.0 r7',3V  
*/ p ]d] QMu  
public class ImprovedMergeSort implements SortUtil.Sort { <ZB1Vi9}8  
-I=l8m6L  
private static final int THRESHOLD = 10; }*L(;r)q  
<qGu7y"  
/* Q~T$N  
* (non-Javadoc) {P*m;a`}  
* YQY%M>F@d%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3$X'Y]5a  
*/ HbW0wuI  
public void sort(int[] data) { '} $Dgp6e  
int[] temp=new int[data.length]; N$[{8yil^w  
mergeSort(data,temp,0,data.length-1); 8(* [Fe9  
} F8apH{&t  
y '!m4-  
private void mergeSort(int[] data, int[] temp, int l, int r) { .?l\g-;=  
int i, j, k; :>=\.\  
int mid = (l + r) / 2; sM9+dh  
if (l == r) ^`G}gWBx}w  
return; f;b[w   
if ((mid - l) >= THRESHOLD) ,N0#!<}4  
mergeSort(data, temp, l, mid); /i77  
else tPF.r  
insertSort(data, l, mid - l + 1); g1( IR)U!z  
if ((r - mid) > THRESHOLD) /E\%>wv  
mergeSort(data, temp, mid + 1, r); [KxF'mz9  
else rEF0oJ.  
insertSort(data, mid + 1, r - mid); 7a~X:#  
SCz318n  
for (i = l; i <= mid; i++) { KRA/MQ^7~U  
temp = data; _F`lq_C  
} `*shF9.\C  
for (j = 1; j <= r - mid; j++) { ' MxrQ;|S  
temp[r - j + 1] = data[j + mid]; /gG"v5]  
} F|!){=   
int a = temp[l]; ^ (FdXGs[  
int b = temp[r]; L+i(TM=  
for (i = l, j = r, k = l; k <= r; k++) { r3PT1'P?L  
if (a < b) { gN"7be&J  
data[k] = temp[i++]; o !U 6?  
a = temp; yYfs y?3  
} else { Ct>GYk$  
data[k] = temp[j--]; .;N1N^  
b = temp[j]; ( U xW;  
} _FWBUZ;N  
} <Sr  
} [)TRTxFb  
.Fp4: e  
/** q?8| [.  
* @param data \7'+h5a  
* @param l 0ik7v<:  
* @param i 9_5ow  
*/ |/)${*a4n  
private void insertSort(int[] data, int start, int len) { :n-]>Q>5=k  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); s ']Bx=  
} q0zr E5  
} gp\<p-}  
} uu>Pkfo  
} @8I4[TE  
M "94#.dKK  
堆排序: v p/yG   
U3dwI:cG  
package org.rut.util.algorithm.support; K>@+m  
AnX%[W "  
import org.rut.util.algorithm.SortUtil; e(<st r>  
[wzb<"kW  
/** s|y "WDyx5  
* @author treeroot ZG&>:Si;  
* @since 2006-2-2 mmk=97  
* @version 1.0 lp^<3o*1  
*/ Ev}C<zk*  
public class HeapSort implements SortUtil.Sort{ TJR:vr  
fNW"+ <W  
/* (non-Javadoc) (O(}p~s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]Yn_}Bq  
*/ SR |`!  
public void sort(int[] data) { @/ohg0  
MaxHeap h=new MaxHeap(); P&^;656r  
h.init(data); wLnf@&jQ%  
for(int i=0;i h.remove(); yL-YzF2  
System.arraycopy(h.queue,1,data,0,data.length); G\+L~t  
} y#z  
m0a?LY  
private static class MaxHeap{ (bH`x]h#  
VL` z[|e @  
void init(int[] data){ ia+oX~W!VR  
this.queue=new int[data.length+1]; HK0! P*  
for(int i=0;i queue[++size]=data; YOmM=X+'H  
fixUp(size); SSWP~ t  
} :x4|X8>  
} wMg0>  
!`Hd-&}bYz  
private int size=0; f@|A[>"V  
J`].:IOh  
private int[] queue; oUQ,61H  
^Xq 6:  
public int get() { cmU1!2.1E  
return queue[1]; 1oW ED*B  
} heC/\@B  
0?:} P  
public void remove() { {ix?Brq/  
SortUtil.swap(queue,1,size--); 9 %I?).5  
fixDown(1); [QoK5Yw{  
} GkTiDm?  
file://fixdown CU@Rob}s  
private void fixDown(int k) { ?FpWvyz|  
int j; 67G?K;)e  
while ((j = k << 1) <= size) { Zy?Hi`  
if (j < size %26amp;%26amp; queue[j] j++; ?En O"T.  
if (queue[k]>queue[j]) file://不用交换 :fZ}o|t7  
break; QLiu2U o  
SortUtil.swap(queue,j,k); 8y.wSu  
k = j; gf &Pn  
} b)qoh^  
} Ch|jtVeuyJ  
private void fixUp(int k) { i/`m`qdg  
while (k > 1) { j2StXq3  
int j = k >> 1; keX,d#  
if (queue[j]>queue[k]) 2j}\3Pi  
break; OuID%p"O  
SortUtil.swap(queue,j,k); ogHCt{'  
k = j; fPR1f~r  
} `tA" }1;ka  
} "8x8UgG  
~5%W:qwQ  
} xqG[~)~  
*U,@q4  
} \F/hMXDlJ  
x7!L{(E3  
SortUtil: %\dz m-d(C  
d"*uBVzXm  
package org.rut.util.algorithm; }Mp:JPH&S4  
O7-mT8o  
import org.rut.util.algorithm.support.BubbleSort; q1"$<# t  
import org.rut.util.algorithm.support.HeapSort; F@'Jbd`   
import org.rut.util.algorithm.support.ImprovedMergeSort; BW}U%B^.  
import org.rut.util.algorithm.support.ImprovedQuickSort; qG?Qc (  
import org.rut.util.algorithm.support.InsertSort; !Sh&3uy_qN  
import org.rut.util.algorithm.support.MergeSort; >,$_| C  
import org.rut.util.algorithm.support.QuickSort; z"-u95H  
import org.rut.util.algorithm.support.SelectionSort; * K D I}B>  
import org.rut.util.algorithm.support.ShellSort; r%yvOF\>  
~=6xyc/c  
/** CY s,`  
* @author treeroot fzb29 -  
* @since 2006-2-2 jET{Le8i  
* @version 1.0 [65 `$x-  
*/ ~962i#&4  
public class SortUtil { ao1(]64X"  
public final static int INSERT = 1; 8*#R]9  
public final static int BUBBLE = 2; "55skmD.P  
public final static int SELECTION = 3; RI 5yF  
public final static int SHELL = 4; k;AD`7(=  
public final static int QUICK = 5; Sq/ qu-%X  
public final static int IMPROVED_QUICK = 6; =jOv] /  
public final static int MERGE = 7; `.~N4+SP  
public final static int IMPROVED_MERGE = 8; Rg\z<wPBG  
public final static int HEAP = 9; fk6%XO  
A+ZK4]xb  
public static void sort(int[] data) { )wam8k5  
sort(data, IMPROVED_QUICK); &:9c AIe]H  
} =.f-w0V  
private static String[] name={ ;c-(ObSm  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" #~}nFY.  
}; Wu c S:8#|  
ZM !CaR  
private static Sort[] impl=new Sort[]{ 9kN}c<o  
new InsertSort(), X0bN3N  
new BubbleSort(), LtWP0@JA  
new SelectionSort(), S;3R S;  
new ShellSort(), /YP{,#p  
new QuickSort(), sJ;g$TB  
new ImprovedQuickSort(), -3t7*  
new MergeSort(), \qdHX  
new ImprovedMergeSort(), s C%&cRQD  
new HeapSort() 42_`+Vt]d7  
}; Neq+16*u  
&=Ar  
public static String toString(int algorithm){ OE_XCZ!5P  
return name[algorithm-1]; [')m|u~FS4  
} `5cKA;j>b  
&S{RGXj_  
public static void sort(int[] data, int algorithm) { xu/cq9  
impl[algorithm-1].sort(data); 1an^1!  
} T! Y@`Ox  
+%zAQeb  
public static interface Sort { BZ94NOOdw  
public void sort(int[] data); fxgPhnaC>  
} lGPUIoUo  
GY6`JWk  
public static void swap(int[] data, int i, int j) { FcR=v0),  
int temp = data; T6O::o6  
data = data[j]; AF;)#T<  
data[j] = temp; rn/ /%  
} hm84Aq= f  
} tX9{hC^  
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