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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。 hY{4_ie=8  
插入排序: )!rD&l$tE  
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package org.rut.util.algorithm.support; /q>ExXsEC  
bf.+Ewb(  
import org.rut.util.algorithm.SortUtil; tgCp2 `n  
/** U1/I( w  
* @author treeroot p2l@6\m\  
* @since 2006-2-2 Ih5Y7<8b~  
* @version 1.0 %Bm{ctf#)  
*/ k]:`<`/I_  
public class InsertSort implements SortUtil.Sort{ ".|8(Y  
a"xRc  
/* (non-Javadoc) 3,G|oR{D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yw+]S  
*/ 7Z:HwZ  
public void sort(int[] data) { ~b#<HG\,,  
int temp; t*Ro2QZ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); f2gh|p`  
} -a_qZ7  
} }*9F`=%F  
} PtUS7[]  
a'Cny((  
} $H3C/|  
dkEbP*y Xg  
冒泡排序: DI;LhS*z  
g&p(XuN  
package org.rut.util.algorithm.support; $~:ZzZO  
cu5}(  
import org.rut.util.algorithm.SortUtil; (T2HUmkQ6  
'=+N )O  
/** :,p3&2 I  
* @author treeroot 3v3cK1K@oE  
* @since 2006-2-2 7^rT-f07  
* @version 1.0 @eBo7#Zr  
*/ \M.?*p  
public class BubbleSort implements SortUtil.Sort{ 9HN&M*}  
:tFc Pc'  
/* (non-Javadoc) yO8@.-jb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J| &aqY  
*/ -,/6 Wn'j  
public void sort(int[] data) { x v$fw>  
int temp; @(=?x:j  
for(int i=0;i for(int j=data.length-1;j>i;j--){ qOpwl*?x+  
if(data[j] SortUtil.swap(data,j,j-1); tOnOzD  
} /KnIU|;  
} )ZLj2H<  
} g$)0E<  
} _+)OL-  
[?<v|k  
} n3V$Xtxw  
M-Vz$D/aed  
选择排序: 6w3[PNd  
3_;=y\F  
package org.rut.util.algorithm.support; `xv Uq\  
>J;J&]Olf  
import org.rut.util.algorithm.SortUtil; RjP]8tH&  
z<A8S=s6n  
/** [m< jM[w{  
* @author treeroot :+9. v  
* @since 2006-2-2 aW|=|K  
* @version 1.0 EqD@o  
*/ "S{GjOlEDF  
public class SelectionSort implements SortUtil.Sort { 8TH;6-RT  
dQH8s  
/* {s*1QBM$\Z  
* (non-Javadoc) ~a7@O^q 4  
* \hlS?uD\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TGG=9a]m  
*/ mg70%=qM0f  
public void sort(int[] data) { j4@6`[n:  
int temp; *R4=4e2#S  
for (int i = 0; i < data.length; i++) { ; 1?L  
int lowIndex = i; G^<m0ew|  
for (int j = data.length - 1; j > i; j--) { 4s>L]! W$8  
if (data[j] < data[lowIndex]) { *}HDq(/>w  
lowIndex = j; g] IPNW^n  
} h }&dvd  
} 1M_6X7PH  
SortUtil.swap(data,i,lowIndex);  874j9ky[  
} 8EiS\$O-  
} Y~( 8<`^  
Gyi0SM6v5&  
} x`wUi*G  
.gRb'  
Shell排序: A;/,</  
!L|VmLqa  
package org.rut.util.algorithm.support; 6x!iL\Y~  
5``usn/&Kj  
import org.rut.util.algorithm.SortUtil; #cD$ DA  
4|j Pr J  
/** -yIx:*KI  
* @author treeroot A$P Oc<  
* @since 2006-2-2 Y?oeP^V'u  
* @version 1.0 N-p||u  
*/ 8-L -W[  
public class ShellSort implements SortUtil.Sort{ ,*L3  
[e|9%[.V  
/* (non-Javadoc) 0'5N[Bvp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A i#~Eu*  
*/ #cJ1Jj $  
public void sort(int[] data) { ,4,./wIq  
for(int i=data.length/2;i>2;i/=2){ l~1l~Gx_&n  
for(int j=0;j insertSort(data,j,i); PGTjOkx  
} C1YH\ X(r  
} &xC5Mecb*  
insertSort(data,0,1); &$pQ Jf  
} T!&VT;   
`apCu  
/** 3P'Wk|j  
* @param data M;.:YkrUH  
* @param j 7Sycy#D  
* @param i p{0rHu[  
*/ "GxQ9=Z  
private void insertSort(int[] data, int start, int inc) { N40DL_-  
int temp; 9~r8$,e  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ``h* A  
} w/ID y Q  
} pe\]}&  
} Wjd_|Kui  
{|q(4(f"Iu  
} l n09_Lr  
%:-2P  
快速排序: g`=Z%{z%  
M"OCwBT U  
package org.rut.util.algorithm.support; %wq;<'W  
`4|:8@,3{  
import org.rut.util.algorithm.SortUtil; ^ -lWv  
.k5&C/jv  
/** S]c&T`jx  
* @author treeroot `y&2Bf  
* @since 2006-2-2 T' )l  
* @version 1.0 s%zdP  
*/ \-Q6z 8  
public class QuickSort implements SortUtil.Sort{  (=Lx9-u  
40;4=  
/* (non-Javadoc) <q4 <3A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }K 2fwE  
*/ |s !7U  
public void sort(int[] data) { W_]onq 6  
quickSort(data,0,data.length-1); 2J6(TrQ  
} > a8'MK  
private void quickSort(int[] data,int i,int j){ A9y3B^\*  
int pivotIndex=(i+j)/2; s";9G^:  
file://swap Xf|I=XK  
SortUtil.swap(data,pivotIndex,j); ~Y7:08  
~2 J!I^ J  
int k=partition(data,i-1,j,data[j]); Y c>.P  
SortUtil.swap(data,k,j); `Y<FR  
if((k-i)>1) quickSort(data,i,k-1); mx0EEU*  
if((j-k)>1) quickSort(data,k+1,j); 8/ CK(G  
@B>pPCowa  
} MB?762 Q  
/** lM%3 ?~?Q&  
* @param data KN\tRE  
* @param i t\,X G  
* @param j $_W kI^  
* @return =i Wn T  
*/ wvEdZGO8!  
private int partition(int[] data, int l, int r,int pivot) { :T/I%|;f  
do{ _Qf310oONS  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); V.kf@  
SortUtil.swap(data,l,r); Cfst)[j  
} SOJkeN  
while(l SortUtil.swap(data,l,r); mA\}zLw+r9  
return l; C.=[K_  
} ggzcANCD<  
AKUmh  
} c"S{5xh0&  
ZcrFzi  
改进后的快速排序: 3m/XT"D  
/,^AG2]( f  
package org.rut.util.algorithm.support; z7]GZF  
/baSAoh/e  
import org.rut.util.algorithm.SortUtil; 67P@YL  
~:"//%M3l  
/** 39Tlt~Psz  
* @author treeroot 9h0Y">}`b  
* @since 2006-2-2 Au{J/G<W@  
* @version 1.0 c[4I> "w  
*/ =a_ >")  
public class ImprovedQuickSort implements SortUtil.Sort { %2`.*]L  
 D ~t  
private static int MAX_STACK_SIZE=4096; *~jTE;J  
private static int THRESHOLD=10; ,uCgC4EP  
/* (non-Javadoc) ;0:[X+"(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  M_f.e!?  
*/ @@#h-k%k-  
public void sort(int[] data) { 6{?B`gm7g  
int[] stack=new int[MAX_STACK_SIZE]; C.?~D*Q  
oYrg;]H  
int top=-1; ze#r/j;sw  
int pivot; e#|YROHf  
int pivotIndex,l,r; ECvTmU'=  
u:%Ln_S  
stack[++top]=0; ')KuLVE}S  
stack[++top]=data.length-1; tE;c>=>t  
g3vR\?c`  
while(top>0){ l !:kwF  
int j=stack[top--]; Z3z"c B  
int i=stack[top--]; [ih^VlZ  
5/m}v'S%  
pivotIndex=(i+j)/2; $VUX?ii$7=  
pivot=data[pivotIndex]; %.  W56  
+Z=DvKsTJ  
SortUtil.swap(data,pivotIndex,j); 'Em633  
=r>u'wRQ  
file://partition D[p`1$E-1v  
l=i-1; Isg\ fSK<j  
r=j;  ]YKxJ''u  
do{ FZ=xy[q]~  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); =nE^zY2m%  
SortUtil.swap(data,l,r); kuW^_BROJ  
} #9p|aS\  
while(l SortUtil.swap(data,l,r); r5'bt"K\>  
SortUtil.swap(data,l,j); ! +XreCw  
~r?VXO p"  
if((l-i)>THRESHOLD){ }5lC8{wZ  
stack[++top]=i; p?'&P!  
stack[++top]=l-1; x5eSPF1  
} -$cO0RSY  
if((j-l)>THRESHOLD){ 5O"$'iL  
stack[++top]=l+1; w7QYWf'  
stack[++top]=j; o&#!W(   
} E{{Kz r2$  
i@#=Rxp  
} }sW%i#CV  
file://new InsertSort().sort(data); t-)d*|2n}o  
insertSort(data); ]Yk)A.y  
} jAy 0k  
/** X v$"B-j  
* @param data cng166}1A  
*/ \U.js-  
private void insertSort(int[] data) { M&` b\la  
int temp; aBWA hn  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4XIc|a Aa  
} 9G^gI}bY  
} ZMO ym=  
} WGHf?G/s  
. pyNET  
} sI6coe5n  
,#K{+1z:  
归并排序: Yp EH(tq  
##a.=gl  
package org.rut.util.algorithm.support; 1;eWnb(  
J(w 3A)(  
import org.rut.util.algorithm.SortUtil; :r9<wbr)k0  
V{n7KhN~Y!  
/** W(Rp@=!C  
* @author treeroot v:]z-zU  
* @since 2006-2-2 l;}3J3/qq]  
* @version 1.0 W}@IUCRs  
*/ q@vqhE4  
public class MergeSort implements SortUtil.Sort{ sq;3qbz  
Y]bS=*q  
/* (non-Javadoc) > Ft)v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QM@zy  
*/ i7%`}t  
public void sort(int[] data) { B0D  
int[] temp=new int[data.length]; jGe%'A N\  
mergeSort(data,temp,0,data.length-1); ]D[\l$(  
} T}59m;I  
"w3%BbIx  
private void mergeSort(int[] data,int[] temp,int l,int r){ ]EqwDw4  
int mid=(l+r)/2; ji.T7wn1u  
if(l==r) return ; ;2[),k  
mergeSort(data,temp,l,mid); o2!wz8  
mergeSort(data,temp,mid+1,r); 6o4Y]C2W{1  
for(int i=l;i<=r;i++){ BJKv9x1jK  
temp=data; DGNn#DP  
} P=R-1V  
int i1=l; zJov*^T-C  
int i2=mid+1; yX/{eX5dr  
for(int cur=l;cur<=r;cur++){ $N\k*=  
if(i1==mid+1) 8&yI1XM|  
data[cur]=temp[i2++]; UT0}Ce>e  
else if(i2>r) GI6]Ecc  
data[cur]=temp[i1++]; \&[(PNl  
else if(temp[i1] data[cur]=temp[i1++]; LZ RP}|  
else K%1`LT5:~  
data[cur]=temp[i2++]; ehTv@2b  
} D!&]jkUN  
} F ESl#.}  
Uo;a$sR  
} DMlr%)@ {  
Vllxv6/_  
改进后的归并排序: Zxh<pd25Y  
%F\.1\&eE  
package org.rut.util.algorithm.support; 3Uej]}c  
_{$<s[S  
import org.rut.util.algorithm.SortUtil; zwk& 3  
O_L>We@3E  
/** a[p$e?gka  
* @author treeroot 2S-f5&o  
* @since 2006-2-2 s"R5'W\U  
* @version 1.0 N5zx#g  
*/ -F_c Bu81V  
public class ImprovedMergeSort implements SortUtil.Sort { `\GR Y @cg  
\,'4eV  
private static final int THRESHOLD = 10; qiH)J- ~GZ  
J&&)%&h'I  
/* }42Hhu7j  
* (non-Javadoc) E;wT4 T=  
* ZsSW{ffZ77  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FmSE ]et  
*/ 2#/23(Wc  
public void sort(int[] data) { #x`K4f)  
int[] temp=new int[data.length]; |AS~sjWSJ  
mergeSort(data,temp,0,data.length-1); ae" o|Q  
} A]ZQ?- L/  
_}F _Q5)  
private void mergeSort(int[] data, int[] temp, int l, int r) { sDAP'&  
int i, j, k; E1SWZ&';  
int mid = (l + r) / 2; bo1J'pU  
if (l == r) sf/m@425  
return; TbLU[(m-n  
if ((mid - l) >= THRESHOLD) ~'F.tB  
mergeSort(data, temp, l, mid); (4?^X  
else =cO5Nt  
insertSort(data, l, mid - l + 1); IwRP,MQ~  
if ((r - mid) > THRESHOLD) rgDl%X2B  
mergeSort(data, temp, mid + 1, r); >@Pw{Zh$  
else &XCP@@T  
insertSort(data, mid + 1, r - mid); wY ??#pS  
uQ|LkL%< ^  
for (i = l; i <= mid; i++) { 4ETHaIiWp  
temp = data; TU': Rt  
} {{?MO{Mh*  
for (j = 1; j <= r - mid; j++) { #%w+PL:*O  
temp[r - j + 1] = data[j + mid]; maeQ'Sv_&  
} oY0*2~sg  
int a = temp[l]; t2Jf+t_B7  
int b = temp[r]; %!eRR  
for (i = l, j = r, k = l; k <= r; k++) { G|RBwl  
if (a < b) { =CO) Q2  
data[k] = temp[i++]; B!&y>Z^$  
a = temp; o")"^@Zh i  
} else { h?v8b+:0  
data[k] = temp[j--]; :aBm,q9i:}  
b = temp[j]; TQb@szp:|  
} rIb~@cR)  
} y4l-o  
} H4sW%nZ0  
m(o`;  
/** { ^^5FE)%  
* @param data OQ4Pk/-'  
* @param l q%QvBN  
* @param i J5n6K$ .d  
*/ Hzj8o3  
private void insertSort(int[] data, int start, int len) { Ghc U ~  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); %?, 7!|Ls  
} !#~KSO}zW2  
} Uk*(C(  
} v_Df+  
} Z=Cw7E  
w>8kBQ?b  
堆排序: &-{%G=5~e%  
M$Bb,s  
package org.rut.util.algorithm.support; QmSMDWkh  
egBk7@Ko  
import org.rut.util.algorithm.SortUtil; zyO=x 4U8  
W -HOl!)  
/** }EYmz/nN  
* @author treeroot *C0a,G4  
* @since 2006-2-2 8EMBqhl  
* @version 1.0 cvo+{u$s  
*/ K F_Uu  
public class HeapSort implements SortUtil.Sort{ x;`G n_  
)+|wrK:*v  
/* (non-Javadoc) ~cyKPg6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  ^#C+l  
*/ U;TS7A3  
public void sort(int[] data) { |vm-(HY!  
MaxHeap h=new MaxHeap(); jSM`bE+"  
h.init(data); OI*ltba?  
for(int i=0;i h.remove(); Ly3!0P.<  
System.arraycopy(h.queue,1,data,0,data.length); d}tmZ*q  
} 4n@>gW  
uD?RL~M  
private static class MaxHeap{ \At~94  
GF9[|). T  
void init(int[] data){ \!30t1EZ  
this.queue=new int[data.length+1]; $]Ix(7@W  
for(int i=0;i queue[++size]=data; tu"-]^  
fixUp(size); 1*G&ZI  
} f0Q! lMv  
} AZE%fOG<i  
)Ute  
private int size=0; }!k?.(hpE  
9H;Os:"\|  
private int[] queue; }yn%_KQ0  
gK;dfrU.8Y  
public int get() { qoH:_o8ClO  
return queue[1]; {5D%<Te  
} aMGh$\Pg  
fa,:d8  
public void remove() { ,jeHL@>w[  
SortUtil.swap(queue,1,size--); 74:( -vS  
fixDown(1); Te~jYkCd  
} |f$ws R`&  
file://fixdown f*rub. y  
private void fixDown(int k) { jD"nEp-  
int j; p7Zeudmj  
while ((j = k << 1) <= size) { llR5qq=t  
if (j < size %26amp;%26amp; queue[j] j++; )m3emMO2  
if (queue[k]>queue[j]) file://不用交换 Q:7P /  
break; <*z'sUh+}  
SortUtil.swap(queue,j,k); T^vo9~N*  
k = j; E;4B!"Q8  
} ?Fa$lE4  
} &Ep$<kx8  
private void fixUp(int k) { X_nbNql  
while (k > 1) { Ye4 &4t  
int j = k >> 1; tDah@_  
if (queue[j]>queue[k]) `>g\gaQ  
break; [ ^\{>m7  
SortUtil.swap(queue,j,k); T+~&jC:{  
k = j; H1%o)'Kut4  
} l{.PyU5)  
} *0@Z+'M?  
PPrvVGP   
} ewN|">WXQ  
3I)oqS@q'  
} I4w``""c  
%%n&z6w-  
SortUtil: Fje /;p  
'_Pb\ jK  
package org.rut.util.algorithm; 4clCZ@\K^  
)'g4Ty  
import org.rut.util.algorithm.support.BubbleSort; B* 3_m _a  
import org.rut.util.algorithm.support.HeapSort; ~N| aCi-X  
import org.rut.util.algorithm.support.ImprovedMergeSort; bA Yp }  
import org.rut.util.algorithm.support.ImprovedQuickSort; NX(IX6^y  
import org.rut.util.algorithm.support.InsertSort; SeS ZMv  
import org.rut.util.algorithm.support.MergeSort; G7,v:dlK   
import org.rut.util.algorithm.support.QuickSort; 7b-[# g  
import org.rut.util.algorithm.support.SelectionSort; 9Z=hg[`]<  
import org.rut.util.algorithm.support.ShellSort; kSol%C  
*P7n YjG  
/** `|"o\Bg<  
* @author treeroot :jkPV%!~  
* @since 2006-2-2 fj( WH L  
* @version 1.0 @ YWuWF  
*/ 2Hx*kh2  
public class SortUtil { yB *aG  
public final static int INSERT = 1; -{JReplc  
public final static int BUBBLE = 2; K iXD1Zpz  
public final static int SELECTION = 3; s nxwe  
public final static int SHELL = 4; v,N!cp1  
public final static int QUICK = 5; WdC7CK  
public final static int IMPROVED_QUICK = 6;  f>mEX='w  
public final static int MERGE = 7; ;sf'"UnL  
public final static int IMPROVED_MERGE = 8; rGt]YG#C  
public final static int HEAP = 9; W^ask[46R  
}3XjP55  
public static void sort(int[] data) { 7KRNTnd  
sort(data, IMPROVED_QUICK); v6aMYmenBH  
} K)`R?CZ:s  
private static String[] name={ d3?gh[$  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 1 rbc}e  
}; {i3x\|  
I 6<LKI/  
private static Sort[] impl=new Sort[]{ hZUS#75M5  
new InsertSort(), jL4"FTcE]3  
new BubbleSort(), RN1KM  
new SelectionSort(), hhylsm  
new ShellSort(), =8p[ (<F=  
new QuickSort(), jamai8  
new ImprovedQuickSort(),  }l]r-  
new MergeSort(), HP3%CB  
new ImprovedMergeSort(), <>-gQ9  
new HeapSort() M_75bU  
}; Ud>hDOJ3  
hN1 [*cF  
public static String toString(int algorithm){ n],cs  
return name[algorithm-1]; 4T&Jlu?:  
} p{r{}iYI  
R~TG5^(  
public static void sort(int[] data, int algorithm) { ko!aX;K  
impl[algorithm-1].sort(data); B1i'Mzm-4  
} \[+':o`LH  
Z Wx[@5  
public static interface Sort { QiRx2Z*\  
public void sort(int[] data); }!s$ / Kn  
} [ CU8%%7  
1_}k)(n  
public static void swap(int[] data, int i, int j) { ih:%U  
int temp = data; cx)x="c  
data = data[j]; J[K>)@I/  
data[j] = temp; _A]~`/0;`  
} #LwDs,J:  
} B]7QOf"  
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