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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。 JDnWBEV  
插入排序: ~KGE(o4p  
-Tuk.>i)  
package org.rut.util.algorithm.support; g0/ R\  
ZZ!6O/M  
import org.rut.util.algorithm.SortUtil; q(s0dkrj  
/** ?_S);  
* @author treeroot mpDxJk!   
* @since 2006-2-2 yl' IL#n]r  
* @version 1.0 r_'];  
*/ '{JMWNY  
public class InsertSort implements SortUtil.Sort{ n3/ Bs  
"GqasbX  
/* (non-Javadoc) eK3d_bF+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9ucoQ@  
*/ 2"Unk\Y  
public void sort(int[] data) { Z>1yLt@ls  
int temp; 6+>X`k%D  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); vPy."/[u  
} 4uE/!dT  
} W Kd:O)J  
} m9 D*I1  
gK *=T  
} !,7)ZW?*8  
VeFfkg4  
冒泡排序: \Y:zg3q*  
)T(1oK(g  
package org.rut.util.algorithm.support; '2<N_)43$  
G&6`?1k  
import org.rut.util.algorithm.SortUtil; ##] `  
JkLpoe81  
/** {ueDwnZ  
* @author treeroot v] q"{c/  
* @since 2006-2-2 AQ"rk9Z  
* @version 1.0 mI^S% HT  
*/ ?%Pi#%P  
public class BubbleSort implements SortUtil.Sort{ vhU $GG8  
Q?Xqf7y  
/* (non-Javadoc) -3y $j+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #V[Os!ns  
*/ $O;a~/T  
public void sort(int[] data) { j3 @Q  
int temp; 3?&P^{  
for(int i=0;i for(int j=data.length-1;j>i;j--){ %~Wr/TOt+  
if(data[j] SortUtil.swap(data,j,j-1); !i{5mc \  
} @GQtyl;q  
} ICWHEot  
} V-dub{K  
} Djp;\.$(  
gPpk0LZi  
} RS{E|  
3XUie;*`  
选择排序: Z+FhI^  
Fdx4jc13w  
package org.rut.util.algorithm.support; ,nniSG((3  
}hc+ENh  
import org.rut.util.algorithm.SortUtil; 2.a{,d  
/E Z -  
/** 91FVe  
* @author treeroot wI[J>9Qn  
* @since 2006-2-2 kL -f@CD  
* @version 1.0 TPi{c_ ]  
*/ j'SGZnsy*  
public class SelectionSort implements SortUtil.Sort { 4"+v:t)z6{  
D<^K7tJui  
/* EuD$^#  
* (non-Javadoc) #6 $WuIG  
* k,/2]{#53d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R8j\CiV17  
*/ 5lE9UoG[Q  
public void sort(int[] data) { pf&SIG  
int temp; xwijCFI*  
for (int i = 0; i < data.length; i++) { '^:q|h  
int lowIndex = i; [5P1 pkZ  
for (int j = data.length - 1; j > i; j--) { &:=[\Ws R  
if (data[j] < data[lowIndex]) { )EsFy6K:  
lowIndex = j; +L=a\8Ep  
} xHn "D@  
} jXyK[q&O&  
SortUtil.swap(data,i,lowIndex); *nY$YwHB  
} `{nzw$  
} Q2t>E(S  
HhUk9 >7  
} *iVv(xXgN  
DV~g  
Shell排序: o{MmW~/o&  
]Mgxv>zRbs  
package org.rut.util.algorithm.support; hh^_Z| 5  
4~0 @(3  
import org.rut.util.algorithm.SortUtil; SKSI\]Cc  
=K6{AmG$  
/**  BbNl:`  
* @author treeroot R lmeZy4.  
* @since 2006-2-2 U0dhr;l  
* @version 1.0 l]geQl:7`r  
*/ e:iqv?2t  
public class ShellSort implements SortUtil.Sort{ D{iPsH6};5  
@?[}\9dW  
/* (non-Javadoc) I- WR6s=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I !g+K  
*/ P<R'S  
public void sort(int[] data) { +C`zI~8  
for(int i=data.length/2;i>2;i/=2){  k< g  
for(int j=0;j insertSort(data,j,i); @D=i|f  
} }Ld eU:E4  
} ]iH~ 1[  
insertSort(data,0,1); >Te h ?P  
} 95BRZ!ts  
d2<+Pp  
/** -f%J_`  
* @param data t;)`+K#1:  
* @param j ,gn**E  
* @param i ~5wT|d  
*/ @DCw(.k*  
private void insertSort(int[] data, int start, int inc) { d?1[xv;  
int temp; K}Rq<z W  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); |F52)<\  
} C3e0d~C  
} #~;:i  
} ;Qdw$NuW  
Te&5IB-  
} ~#9(Q  
!l#n.Fx&3  
快速排序: 6^hCW`jG  
](sT,'  
package org.rut.util.algorithm.support; U jB5Xks  
d<afO?"  
import org.rut.util.algorithm.SortUtil; ynG@/S6)K  
Mp`i@pm+  
/** [[vbw)u  
* @author treeroot fk?(mxx"  
* @since 2006-2-2 !1Z rS  
* @version 1.0 5s=L5]]r_j  
*/ s %S; 9 T  
public class QuickSort implements SortUtil.Sort{ 'jd fUB  
C;oT0(  
/* (non-Javadoc) 'n4 iW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GF^ ?#Jh  
*/ >`D$Jz,  
public void sort(int[] data) { dp#'~[j  
quickSort(data,0,data.length-1); Lsz)\yIPj  
} J nf@u  
private void quickSort(int[] data,int i,int j){ 8z'_dfP=5  
int pivotIndex=(i+j)/2; Ox}a\B8  
file://swap J={IGA  
SortUtil.swap(data,pivotIndex,j); l*>, :y  
SOo}}a0  
int k=partition(data,i-1,j,data[j]); YV/JZc f  
SortUtil.swap(data,k,j); Vh5Z'4N  
if((k-i)>1) quickSort(data,i,k-1); 2f7]= snCG  
if((j-k)>1) quickSort(data,k+1,j); z Ud{9B$  
z Feo8S  
} / WJ+e  
/** R7~#7qKQB  
* @param data " )/febBS  
* @param i Y8%*S%yO  
* @param j vHxLn/  
* @return bf-V Q7  
*/ G7d)X^q!xS  
private int partition(int[] data, int l, int r,int pivot) { b;Uqyc  
do{ {{ /-v3n  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 1JSKK.LuJV  
SortUtil.swap(data,l,r); zkmfu~_)  
} I 7s}{pG  
while(l SortUtil.swap(data,l,r); t{Xf3.  
return l; /;a b"b  
} AWn$od`#s  
LKe ~  
} kC4}@{4i  
!w=6>B^  
改进后的快速排序: Z^SF $+UN  
VLs%;|`5D  
package org.rut.util.algorithm.support; ;$$.L bb8  
oV Hh  
import org.rut.util.algorithm.SortUtil; B_#U|10et  
[_wenlkm  
/** "`8~qZ7k  
* @author treeroot ?wYvBFRn7"  
* @since 2006-2-2 eIY![..J/N  
* @version 1.0 -x0VvkHu  
*/ .0f6b  
public class ImprovedQuickSort implements SortUtil.Sort { BP`'1Ns  
{|ChwM\x  
private static int MAX_STACK_SIZE=4096; OVgx2_F  
private static int THRESHOLD=10; $@ Fvl-lK  
/* (non-Javadoc) %+e% RZ3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Or*e$uMIY  
*/ i*-L_!cc:  
public void sort(int[] data) { 0) T`&u3!  
int[] stack=new int[MAX_STACK_SIZE]; Ed=]RR 4R  
25CO_  
int top=-1; hj|P*yKV  
int pivot; L>Soj|WUy(  
int pivotIndex,l,r; U|}Bk/0.  
[[ ;vZ  
stack[++top]=0; !$5.\D  
stack[++top]=data.length-1; FF7  
>@wyiBU  
while(top>0){ hAv.rjhw_  
int j=stack[top--]; |#_`aT"  
int i=stack[top--]; /agX! E4s  
l!^+Xeg~  
pivotIndex=(i+j)/2; H|i39XV  
pivot=data[pivotIndex]; J_ S]jE{  
3ZEV*=+T5  
SortUtil.swap(data,pivotIndex,j); I!OV+utF  
OD\F*Ry~  
file://partition 1hnw+T<<W  
l=i-1; xU_Dg56z'&  
r=j; 3iC$ "9!p  
do{ I? o)X!  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); (#`1[n+b`x  
SortUtil.swap(data,l,r); 8#&axg?a  
} + IpC  
while(l SortUtil.swap(data,l,r); G(6MLh1  
SortUtil.swap(data,l,j); )r^)e 4UI  
3 2MdDa  
if((l-i)>THRESHOLD){ Fv(1A_~IS  
stack[++top]=i; vq&u19iP  
stack[++top]=l-1; rp^G k  
} <>tQa5;  
if((j-l)>THRESHOLD){ NiCB.a  
stack[++top]=l+1; !?u{2 D  
stack[++top]=j; ~gA p`Q  
} q!+&|F  
L 2k?Pl  
} C_~hX G  
file://new InsertSort().sort(data); X|iWnz+^  
insertSort(data); ':jsCeSB  
} @CJ`T&  
/** R<GnPN:c  
* @param data G$)f5_]7{  
*/ >PBP:s1f4>  
private void insertSort(int[] data) { tUPdq0%t[  
int temp; $xl>YYEBMH  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); (+^z9p7/!  
} C%l+<wpXO  
} E0o?rgfdq  
} 9< $n'g  
{+V]saYP  
} 5i42o+'  
i G%h-  
归并排序: #-*#? -  
^OWA   
package org.rut.util.algorithm.support; '!wI8f  
8UahoNrSt  
import org.rut.util.algorithm.SortUtil; ^UEExj f  
^[]@dk9  
/** ~dFdO7  
* @author treeroot d@?++z  
* @since 2006-2-2 #OT8_D  
* @version 1.0 {r,MRZaa  
*/ lPywr TG0  
public class MergeSort implements SortUtil.Sort{ [m9Iz!E  
X5hamkM*m  
/* (non-Javadoc) f*IC ZM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z&VH7gi  
*/ th?w&;L  
public void sort(int[] data) { { #,eD  
int[] temp=new int[data.length]; 4%s6 d,6"  
mergeSort(data,temp,0,data.length-1); p]-\\o}  
} 7|/Ct;oO:  
f=L&>X  
private void mergeSort(int[] data,int[] temp,int l,int r){ Q*J8`J:#^R  
int mid=(l+r)/2; $k|:V&6SV  
if(l==r) return ; :p@.aD5  
mergeSort(data,temp,l,mid); 4|#@41\ B  
mergeSort(data,temp,mid+1,r); jrKRXS  
for(int i=l;i<=r;i++){ -xXz}2S4  
temp=data; :47bf<w|Y  
} &# ?2zbZ  
int i1=l; Z@G[\"  
int i2=mid+1; nH=8I~jp  
for(int cur=l;cur<=r;cur++){ @g{FNXY$m  
if(i1==mid+1) 3iI 4yg  
data[cur]=temp[i2++]; BM,]Wjfdj  
else if(i2>r) %]m/fo4b  
data[cur]=temp[i1++]; \pVmSac,  
else if(temp[i1] data[cur]=temp[i1++]; z{N~AaY  
else ]#fmih^  
data[cur]=temp[i2++]; m/T3Um  
} #BZ2%\  
} ?E*;fDEC  
oieJ7\h]m  
} 1#D&cx6  
%\|9_=9Wn  
改进后的归并排序: {%"n[DLps  
$q iY)RE  
package org.rut.util.algorithm.support; Q/[g|"  
R'udC}  
import org.rut.util.algorithm.SortUtil; @|jLw($Ly  
PXRkK63  
/** a At<36{?  
* @author treeroot 5C|Y-G  
* @since 2006-2-2 T.}wcQf&*  
* @version 1.0 6Bop8B  
*/  `u 't  
public class ImprovedMergeSort implements SortUtil.Sort { ~fV\ X*  
!*tV[0 i2  
private static final int THRESHOLD = 10; '<JNS8h  
{#_CzI.0f  
/* UK7pQt}9  
* (non-Javadoc) p" ;5J+?(  
* ]+ KN9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \|gE=5!Am=  
*/ z[0+9=<Y  
public void sort(int[] data) { <0w"$.K#3  
int[] temp=new int[data.length]; cR *5iqA  
mergeSort(data,temp,0,data.length-1); @BfJb[A#  
} :< d.  
j v4O  
private void mergeSort(int[] data, int[] temp, int l, int r) { QH d^?H*  
int i, j, k; GI[TD?s  
int mid = (l + r) / 2; O?=YY@j  
if (l == r) 2I@d=T{K  
return; $5]}]  
if ((mid - l) >= THRESHOLD) R[ #vFQ  
mergeSort(data, temp, l, mid); +I$,Y~&`>  
else /F thT  
insertSort(data, l, mid - l + 1); Xv&&U@7  
if ((r - mid) > THRESHOLD) (^@rr[. o7  
mergeSort(data, temp, mid + 1, r); d:X@zUR*)  
else -91*VBrOd  
insertSort(data, mid + 1, r - mid); yd|roG/  
Km)VOX[ZZ  
for (i = l; i <= mid; i++) {   L* 0$x  
temp = data; a7fFp 9l!  
} @,:6wKMc  
for (j = 1; j <= r - mid; j++) { 44x+2@&1  
temp[r - j + 1] = data[j + mid]; lM |}K-2  
} @fc-[pv  
int a = temp[l]; \}n\cUy-  
int b = temp[r]; h]>QGX[kC  
for (i = l, j = r, k = l; k <= r; k++) { P2!+ZJ&  
if (a < b) { 28! ke  
data[k] = temp[i++]; "M !]t,?S  
a = temp; =] +owl2  
} else { N8E  
data[k] = temp[j--]; v:1DNR4  
b = temp[j]; 3-PqUJT$   
} CiNOGSlDj  
} 2bnYYQ14:  
} z%E ok  
(B^rW,V[R  
/** M/mm2?4  
* @param data 7@1GSO:Yf  
* @param l ]i:_^z)R  
* @param i B" 0a5-pkr  
*/ N*`qsv 0  
private void insertSort(int[] data, int start, int len) { H,3WdSL`K  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); K0usBA  
} )4e8LO  
} B6yTD7  
} {6tj$&\)  
} WbWEgd%8.  
}WV}in0  
堆排序: t+ vz=`  
T! ww3d  
package org.rut.util.algorithm.support; (UB?UJc  
}|OwUdE!R9  
import org.rut.util.algorithm.SortUtil; YW2h#PV6_  
FPE%h =sw  
/** Q3I^(Ll"L  
* @author treeroot 2;w`W58  
* @since 2006-2-2 `x]`<kS;  
* @version 1.0 7C9_;81_Dt  
*/ /os,s[w  
public class HeapSort implements SortUtil.Sort{ } 3}H}  
aJ"m`5]=%  
/* (non-Javadoc) *N&~Uq^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SaIY-PC  
*/ |E9'ii&?B  
public void sort(int[] data) { ^)UX#D3b  
MaxHeap h=new MaxHeap(); 6Vj=SYK  
h.init(data); @GWJq 3e  
for(int i=0;i h.remove(); g.*DlD%%  
System.arraycopy(h.queue,1,data,0,data.length); M5kw3Jy5  
} CUN1.i<pk8  
+P=Ikbx AO  
private static class MaxHeap{ .|e8v _2J  
kW7$Gw]-  
void init(int[] data){ 4:9N]1JCb  
this.queue=new int[data.length+1]; mIZ6[ ?  
for(int i=0;i queue[++size]=data; 1{A K=H')  
fixUp(size); jx{wOb~oO)  
} z*UgRLKZD  
} )*XD"-9  
ni85Ne$  
private int size=0; IG Ax+3V  
}a%1$>sj  
private int[] queue; EO`eg]  
?2%;VKN4  
public int get() { )|=4H>?%  
return queue[1]; ;pw9+zo ^M  
} P-/"sD  
bXi!_'z$  
public void remove() { P~M[i9 V  
SortUtil.swap(queue,1,size--); 1,(WS F  
fixDown(1); PX*}.L *x  
} 1\a.o[g3e  
file://fixdown W\2 ']7}e  
private void fixDown(int k) { 7$*X   
int j; :,ucJ|  
while ((j = k << 1) <= size) { #g/m^8n?s  
if (j < size %26amp;%26amp; queue[j] j++; \10KIAQ  
if (queue[k]>queue[j]) file://不用交换 Z(XohWe2  
break; 3 "iBcsLn  
SortUtil.swap(queue,j,k); "AP$)xM-:  
k = j; .I?~R:(Ig  
} CTS1."kx1  
} q B IekQT  
private void fixUp(int k) { \n`/?\r.z  
while (k > 1) { PthgxB^  
int j = k >> 1; B!  P/?  
if (queue[j]>queue[k]) +e, c'.  
break; l,*5*1lM  
SortUtil.swap(queue,j,k); Wu"1M^a  
k = j; as(/ >p  
} >=4('  
} J5(^VKj  
{- &`@V  
} /xSFW7d1  
@QMy!y_K~m  
} L~%7=]m  
%!r.) Wx|2  
SortUtil: { V) `6  
+0?1"2  
package org.rut.util.algorithm; D4\[D8pD  
 fDloL  
import org.rut.util.algorithm.support.BubbleSort; 'b0r?A~c=  
import org.rut.util.algorithm.support.HeapSort; H,c`=Ii3  
import org.rut.util.algorithm.support.ImprovedMergeSort; Gr4v&Mz:  
import org.rut.util.algorithm.support.ImprovedQuickSort;  o*Xfgc  
import org.rut.util.algorithm.support.InsertSort; 9Z21|5  
import org.rut.util.algorithm.support.MergeSort; JA*+F1s  
import org.rut.util.algorithm.support.QuickSort; 0'HQ=pP  
import org.rut.util.algorithm.support.SelectionSort; ps;dbY*s6  
import org.rut.util.algorithm.support.ShellSort; %E5b }E#  
16>D?;2o(  
/** `8S3Y  
* @author treeroot 2]<.m]  
* @since 2006-2-2 14"+ctq  
* @version 1.0 7{]dh+)  
*/ d@ >i=l [  
public class SortUtil { p="0Y<2l  
public final static int INSERT = 1; J?dLI_{ <  
public final static int BUBBLE = 2; ! Sw=ns7  
public final static int SELECTION = 3; OIJT~Z}  
public final static int SHELL = 4; v$D U q+  
public final static int QUICK = 5; x5CMP%}d  
public final static int IMPROVED_QUICK = 6; ?% [~J  
public final static int MERGE = 7; r ^\(M {  
public final static int IMPROVED_MERGE = 8; "X^<g{]  
public final static int HEAP = 9; fZj,Q#}D  
S43JaSw)  
public static void sort(int[] data) { O ,9^R  
sort(data, IMPROVED_QUICK); J&s$Wqf  
} ^vPsp?  
private static String[] name={ d]Y;rqjue  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" MI'"Xzp{s  
};  4=ovm[  
C[}UQod0  
private static Sort[] impl=new Sort[]{ j!w{  
new InsertSort(), Gx8!AmeX  
new BubbleSort(), S2e3d  
new SelectionSort(), _3:%b6&Pz  
new ShellSort(), ]'"Sa<->  
new QuickSort(), 4g"%?xN  
new ImprovedQuickSort(), h=0a9vIXF  
new MergeSort(), P%)r4+at  
new ImprovedMergeSort(), 6Iqy"MQuq  
new HeapSort() pr,,E[  
}; )A xD|A  
p20JU zy  
public static String toString(int algorithm){ {x?qz~W  
return name[algorithm-1]; p0WUF\"  
} ccrWk*tr  
) $_1U!z  
public static void sort(int[] data, int algorithm) { & W od  
impl[algorithm-1].sort(data); \yu7,v  
} PMpq>$6b7  
0F@~[W|2  
public static interface Sort { a_V\[V{R=  
public void sort(int[] data); _FYA? d}  
} Hf@4p'  
e`s1z|h  
public static void swap(int[] data, int i, int j) { '9Z`y_~)G  
int temp = data; cZQ8[I  
data = data[j]; W~0rSVD$<z  
data[j] = temp; 5h&sdzfG  
} aZ4?! JW.  
} kqm(D#  
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