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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。 81O`#DfZ  
插入排序: t)=u}t$  
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package org.rut.util.algorithm.support; ?gY^,Ckj  
{k%*j 4  
import org.rut.util.algorithm.SortUtil; ']4b}F:}  
/** b\Y<1EV^[  
* @author treeroot Z O5_n  
* @since 2006-2-2 .EM0R\q  
* @version 1.0 0WaC.C+2i  
*/ B?`Gs^Y {z  
public class InsertSort implements SortUtil.Sort{ O[U^{~iM  
|`1lCyV\tE  
/* (non-Javadoc) mQhI"3! f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9i*t3W71]  
*/ a"EX<6"  
public void sort(int[] data) { |77.Lqqy,  
int temp; fr#Y<=Jo  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "G].hKgbk*  
} )pJ} $[6  
} y>_lxLhmO#  
} szu!*wc9  
f',n '  
} T@GT=1E)  
{Xb 6wQ"  
冒泡排序: 'X d_8.  
s {p-cV  
package org.rut.util.algorithm.support; W,9. z%  
$l@nk@  
import org.rut.util.algorithm.SortUtil; e;GLPB   
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/** \1cay#X  
* @author treeroot ig5 d-A  
* @since 2006-2-2 'G;y!<a  
* @version 1.0 9E5Ec~l  
*/ 3gV 17a  
public class BubbleSort implements SortUtil.Sort{ XZD9vFj1Z  
zePVB -@u  
/* (non-Javadoc) 18f!k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [KR|m,QWp  
*/ 8/F}vfKEN  
public void sort(int[] data) { E #q gt9  
int temp; 8[\F*H  
for(int i=0;i for(int j=data.length-1;j>i;j--){ B +[ri&6X\  
if(data[j] SortUtil.swap(data,j,j-1); M!Q27wT8 O  
} F6 ?4&h?n  
} <E/4/ ANN  
} s!(O7Ub  
} ?f f!(U  
4r&DW'  
} Hof@,w  
meey5}  
选择排序: r6S-G{o  
XVr>\T4  
package org.rut.util.algorithm.support; QVLv}w`O  
z*n  
import org.rut.util.algorithm.SortUtil; Yef=HSzo  
(8T36pt~  
/** `Sgj!/! F  
* @author treeroot "Zm**h.t  
* @since 2006-2-2 & mwQj<Z  
* @version 1.0 d5Hp&tm  
*/ +a1Or  
public class SelectionSort implements SortUtil.Sort { H3\4&q  
.' foS>W=t  
/* eB%hP9=:x  
* (non-Javadoc) XrP'FLY o  
* B_R J;.oH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p}H:t24Cr5  
*/ $WmB__  
public void sort(int[] data) { a,mG5bQ!  
int temp; r&  
for (int i = 0; i < data.length; i++) { .TZ0F xW  
int lowIndex = i; qaJ$0,]H+  
for (int j = data.length - 1; j > i; j--) { O&BNhuW2  
if (data[j] < data[lowIndex]) { " kp+1sG8  
lowIndex = j; } DQ<YF+  
} ?+Gc. lU  
} 1<|\df.  
SortUtil.swap(data,i,lowIndex); -KV)1kET  
} sNB*S{   
} vd<r}3i*  
X!H[/b:1O  
} @jh\yjrW  
]JDKoA{S0  
Shell排序: <14,xYpE  
^4MRG6G  
package org.rut.util.algorithm.support; wHx@&Tp  
5rp,xk!  
import org.rut.util.algorithm.SortUtil; oKyl2jg+,  
(h {"/sR  
/** CCoT  
* @author treeroot HGycF|]2  
* @since 2006-2-2 ?{=& Ro  
* @version 1.0 rtM29~c>@  
*/ )M3} 6^s]  
public class ShellSort implements SortUtil.Sort{ xXb7/.*qE  
B ]*v{?<W  
/* (non-Javadoc) T{ WJf-pI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZkWX4?&OMt  
*/ WAq)1gwN  
public void sort(int[] data) { wFbw3>'a9  
for(int i=data.length/2;i>2;i/=2){ `-_kOxe3  
for(int j=0;j insertSort(data,j,i); PFR64HK2  
} OVq(ulwi+  
} 2/o_,k  
insertSort(data,0,1); ^*?mb)  
} Oq3aboAt  
D[jPz0  
/** \B/!}Tn;  
* @param data zX]4DLl,  
* @param j  9}-;OJe  
* @param i (JMk0H3u  
*/ Gx)U~L$B  
private void insertSort(int[] data, int start, int inc) { $Gs9"~z?;  
int temp; @kst G3@  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); r+%$0eB1^  
} C"SG':  
} pu-X -j  
} t[e`wj+qz  
k2-+3zx  
} P~}Yj@2  
ZuLW%z.  
快速排序: ol3].0Vc]  
=w!>/#U  
package org.rut.util.algorithm.support; !)r1zSY"g  
pNFVa<D  
import org.rut.util.algorithm.SortUtil; DhVO}g)2#  
q%S^3C&  
/** aHR+4m~)  
* @author treeroot w;b;rHAZ\  
* @since 2006-2-2 (e"\%p`  
* @version 1.0 P>}OwW  
*/ bU4l|i;j  
public class QuickSort implements SortUtil.Sort{ %ztv.K(8  
!kW~s_gUb*  
/* (non-Javadoc) ,7:? Du}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ee2k..Tq#  
*/ \+Nn>wW.  
public void sort(int[] data) { BbIg]E/G  
quickSort(data,0,data.length-1); `; +UWdAR  
} "?AJ(>wP  
private void quickSort(int[] data,int i,int j){ fphi['X   
int pivotIndex=(i+j)/2; /OD@Xl];K  
file://swap MV.&GUez{  
SortUtil.swap(data,pivotIndex,j); SD  _P=?  
h"}c_l Y9  
int k=partition(data,i-1,j,data[j]);  u> @@  
SortUtil.swap(data,k,j); %/n#{;c#  
if((k-i)>1) quickSort(data,i,k-1); H|%'$oWp  
if((j-k)>1) quickSort(data,k+1,j); T`$!/BlZ  
mXwDB)O{)  
} r=gF&Og,?  
/** <dWms`Qc O  
* @param data > I>=/i^  
* @param i )z\ 73|w  
* @param j 1j_ 6Sw(  
* @return Vi=u}(*  
*/ pgw_F  
private int partition(int[] data, int l, int r,int pivot) { e;8nujdG"  
do{ Xmny(j)g  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); %#7 ]  
SortUtil.swap(data,l,r); "}Oj N\  
} y9U*E80q{  
while(l SortUtil.swap(data,l,r); Ghf/IXq#  
return l; \=2<< iv  
} IY,n7x0d  
0'Uo3jAB  
} [;Y*f,UG_-  
ruU &.mZ  
改进后的快速排序: $tqr+1P  
_T.T[%-&=  
package org.rut.util.algorithm.support; ;9;jUQ]MyG  
bLsN?_jy  
import org.rut.util.algorithm.SortUtil; 7pO/!Lm  
>&[q`i{  
/** O0_kLH$.  
* @author treeroot /l` "@  
* @since 2006-2-2 TCI)L}L|  
* @version 1.0 4N(iow4  
*/ Dqg01_O9O  
public class ImprovedQuickSort implements SortUtil.Sort { OrY^?E  
%CV.xDE8  
private static int MAX_STACK_SIZE=4096; 9GgXX9K  
private static int THRESHOLD=10; QB5,Vfoux  
/* (non-Javadoc) @bIZ0tr4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bLSUF`-z  
*/ {k uC+~R  
public void sort(int[] data) { 3~EPX`#[W  
int[] stack=new int[MAX_STACK_SIZE]; }X9G(`N(}  
@/8O@^  
int top=-1; z3p TdUt  
int pivot; 8 3Tv-X  
int pivotIndex,l,r; r7+Ytr  
G%MdZg&i  
stack[++top]=0; Z8I0v$LjR  
stack[++top]=data.length-1; =rN_8&  
9Pql\]9"o  
while(top>0){ 6KE?@3;Om  
int j=stack[top--]; U>hpYqf_  
int i=stack[top--]; lho0Xy gn  
J-ErG!  
pivotIndex=(i+j)/2; `u" )*Q}  
pivot=data[pivotIndex]; T4Io+b8 $  
 $ucmE  
SortUtil.swap(data,pivotIndex,j); 7v V~O@JP  
si1Szmx,  
file://partition PouWRGS_  
l=i-1; #k t+ )>  
r=j; =JE5/  
do{ dO!B=/  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 8SN4E  
SortUtil.swap(data,l,r); a 9!.e rM  
} v[]&yD  
while(l SortUtil.swap(data,l,r); -5y=K40  
SortUtil.swap(data,l,j); (9KiIRN   
%?PRBE'}'  
if((l-i)>THRESHOLD){ : ~Ppv5W.  
stack[++top]=i; i#%!J:_=  
stack[++top]=l-1; '3]M1EP  
} k;f%OQsF_  
if((j-l)>THRESHOLD){ M.K%;j`  
stack[++top]=l+1; ;Dp<|n  
stack[++top]=j; ]p*Fq^  
} 8Z>=sUMQ  
MI,kKi  
} (/jZ &4T  
file://new InsertSort().sort(data); ]6].l$%z#  
insertSort(data); _i2guhRs*Q  
} .zo>,*:t  
/** B *otqu z  
* @param data _ykT(`.#  
*/ rLE5fl5W  
private void insertSort(int[] data) { y eWB.M~X  
int temp;  zt2#6v  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); H{g&yo  
} qa,i:T(w  
} #@:GLmD%  
} 6Ao{Aej|  
(%)<jg1  
} <P_B|Y4N/  
f,VJfY?#  
归并排序: c^7QiTt_  
]5+<Rqdbg  
package org.rut.util.algorithm.support; R] " jr  
 h@+(VQ  
import org.rut.util.algorithm.SortUtil; &d=ZCaP  
O~c\+~5M*  
/** .&rL>A2U  
* @author treeroot eT@, QA(3  
* @since 2006-2-2 k? !'OHmBL  
* @version 1.0 s!?T$@a=  
*/ lr9s`>9  
public class MergeSort implements SortUtil.Sort{ >#|%y>g .o  
P vW~EJ  
/* (non-Javadoc) cm`x;[e6l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F!cRx%R  
*/ Z`x*Igf8  
public void sort(int[] data) { PDhoCAh !  
int[] temp=new int[data.length]; .Lp\Jyegs  
mergeSort(data,temp,0,data.length-1); Pk^W+M_)~  
} .$-GGvN]  
RP%7M8V){B  
private void mergeSort(int[] data,int[] temp,int l,int r){ THmmf_w@  
int mid=(l+r)/2; b$N&sZ  
if(l==r) return ; c;7`]}fGu  
mergeSort(data,temp,l,mid); kZNVUhW6S  
mergeSort(data,temp,mid+1,r); x%%OgO +>  
for(int i=l;i<=r;i++){ ^gY3))2_  
temp=data; ^ ^k]2oG  
} b 2XUZ5  
int i1=l; p]x9hZ  
int i2=mid+1; 5^C.}/#>F  
for(int cur=l;cur<=r;cur++){ Yl"l|2 :  
if(i1==mid+1) cc:,,T /i  
data[cur]=temp[i2++]; wg=-&-  
else if(i2>r) b|nh4g  
data[cur]=temp[i1++]; Mcqym8,q|3  
else if(temp[i1] data[cur]=temp[i1++]; :NXM.@jJ="  
else ,_I#+XiXY  
data[cur]=temp[i2++]; 1Ts$kdO  
} \kG;T=H  
} ?K= X[  
W6jdS;3  
} ehyCAp0oI  
{qb2!}FQ  
改进后的归并排序: Kq;s${ |G  
lR0WDJv  
package org.rut.util.algorithm.support; O_^t u?x  
_qsg2e}n  
import org.rut.util.algorithm.SortUtil; ':DLv{R  
%)sG 34  
/** s'=w/os  
* @author treeroot r;8X6C  
* @since 2006-2-2 q1,jDJglZ  
* @version 1.0 XG01g3  
*/ %OAvhutS  
public class ImprovedMergeSort implements SortUtil.Sort { >%c7|\q[R  
>M^4p   
private static final int THRESHOLD = 10; .{4U]a;[  
xH>2$  ;f  
/* #?fKi$fS;L  
* (non-Javadoc) l@`Do[  
* i]}`e>fF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1[4 0\sM  
*/ _ cm^Fi5  
public void sort(int[] data) { `R,g_{M j  
int[] temp=new int[data.length]; Og<nnq  
mergeSort(data,temp,0,data.length-1); !Hx[ `3  
} KLCd`vr.xf  
% jSB9  
private void mergeSort(int[] data, int[] temp, int l, int r) { I:edLg1T  
int i, j, k; XY!0yAK(!  
int mid = (l + r) / 2; %IK[d#HO  
if (l == r) R>R8LIZZc  
return; y-lBaTE9  
if ((mid - l) >= THRESHOLD) dQJ)0!B  
mergeSort(data, temp, l, mid); `!@d$*:'  
else D ] G=sYt  
insertSort(data, l, mid - l + 1); U$7]*#@&  
if ((r - mid) > THRESHOLD) ?V' zG&n@  
mergeSort(data, temp, mid + 1, r); cA{7*=G?  
else J1"16Uu  
insertSort(data, mid + 1, r - mid); 1s6L]&B  
XxLauJP K  
for (i = l; i <= mid; i++) { Y|~+bKa  
temp = data; D"8?4+  
} CZw]@2/JuQ  
for (j = 1; j <= r - mid; j++) { `XrF ,  
temp[r - j + 1] = data[j + mid]; ][1 iKT  
} #b94S?dq  
int a = temp[l]; n 'E:uXv"  
int b = temp[r]; +MyXIWmD  
for (i = l, j = r, k = l; k <= r; k++) { #"!q_@b,D  
if (a < b) { m*~Iu<5L  
data[k] = temp[i++]; ]? % *3I  
a = temp; '?uwUBi  
} else { q.!<GqSgb  
data[k] = temp[j--]; {3eg4j.Z  
b = temp[j]; fzZ`O{$8  
} D]+]Br8  
} {8T/;K@  
} Pd04  
jKr>Ig=$tA  
/** Eal*){"<,?  
* @param data \^x`GsVy  
* @param l E-Y4TBZ*  
* @param i 1h#e-Oyff  
*/ L)X[$:  
private void insertSort(int[] data, int start, int len) { 7~!F3WT{  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); nd,2EX<bE  
} <5o oML]nP  
} F}c}I8Ao  
} /q5!p0fH*  
} ;}}k*< Z  
GS+Z(,J>=  
堆排序: 74fE%;F  
QE+HL8c^s  
package org.rut.util.algorithm.support; %gEgp Jd  
";;Nc>-Y  
import org.rut.util.algorithm.SortUtil; v@Qfx V2  
HcCT=x7:  
/** Ot;)zft  
* @author treeroot /@Ec[4^=!.  
* @since 2006-2-2 +d=w%r)  
* @version 1.0 [Zne19/  
*/ =XFyEt  
public class HeapSort implements SortUtil.Sort{ z -uW,  
5+[ 3@  
/* (non-Javadoc) `Ha<t.v(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c]68$;Z7  
*/ <lTLz$QE  
public void sort(int[] data) { "Pa  y2  
MaxHeap h=new MaxHeap(); b=XXp`h~a  
h.init(data); q aG8:  
for(int i=0;i h.remove(); dy3fZ(=q^  
System.arraycopy(h.queue,1,data,0,data.length); =[LUOOR*]  
} om2)Cd9~7  
tL]T_]z  
private static class MaxHeap{ P (aN6)D  
>E9 k5  
void init(int[] data){ @ RP?)*8}&  
this.queue=new int[data.length+1]; @:t2mz:^i  
for(int i=0;i queue[++size]=data; L~E|c/  
fixUp(size); X+QoO=02LR  
} %+@<T<>J<k  
} EIF"{,m  
6cX Z3;a  
private int size=0; "f:_(np,  
Ou{VDE  
private int[] queue; zg$NrI&  
/" @cv{  
public int get() { =F09@C,  
return queue[1]; 2]cU:j6G  
} J+m1d\lBu  
b}!T!IP}  
public void remove() { PO*0jO;%  
SortUtil.swap(queue,1,size--); " TC:O^X  
fixDown(1); 88Vl1d&b  
} /YHnt-}v,  
file://fixdown s[#_sR`y  
private void fixDown(int k) { v9"03 =h  
int j; !q 9PO  
while ((j = k << 1) <= size) { SW7AG;c=  
if (j < size %26amp;%26amp; queue[j] j++; UB w*}p  
if (queue[k]>queue[j]) file://不用交换 ny1Dg$u i2  
break; ]h'*L`  
SortUtil.swap(queue,j,k); @3`Pq2<  
k = j; %xdyG Al:  
} WHcw5_3#  
} v;(k7  
private void fixUp(int k) { Bhk@0\a  
while (k > 1) { bMGXx>x  
int j = k >> 1; yH0vESgv  
if (queue[j]>queue[k]) S]?I7_  
break; gwDVWhq  
SortUtil.swap(queue,j,k); jD ?*sd  
k = j; dH)\zCt  
} eC`G0.op  
} k,61Va  
6*:U1{Gl)  
} byPqPSY  
P52qtN<  
} y>0Gmr  
FiKGB\_]  
SortUtil: ] QJ7q}  
84/#,X!=s  
package org.rut.util.algorithm; l:*.0Tj  
-'T^gEd) c  
import org.rut.util.algorithm.support.BubbleSort; h059DiH  
import org.rut.util.algorithm.support.HeapSort; >dnDN3x  
import org.rut.util.algorithm.support.ImprovedMergeSort; EZ[e  a<  
import org.rut.util.algorithm.support.ImprovedQuickSort; P98g2ak  
import org.rut.util.algorithm.support.InsertSort; \f'=  
import org.rut.util.algorithm.support.MergeSort; kV4,45r  
import org.rut.util.algorithm.support.QuickSort; "] ]aF1  
import org.rut.util.algorithm.support.SelectionSort; ~0rvrDDg  
import org.rut.util.algorithm.support.ShellSort; 0(Hzh?t_  
NXOcsdcZu  
/** ;)z+dd#3  
* @author treeroot *2 ~"%"C  
* @since 2006-2-2 *fI\|%K  
* @version 1.0 n( zzH  
*/ t@jke  
public class SortUtil { )H+p6<  
public final static int INSERT = 1; W4=A.2[q  
public final static int BUBBLE = 2; JhvT+"~  
public final static int SELECTION = 3;  tk+4noA  
public final static int SHELL = 4; P>'29$1'  
public final static int QUICK = 5; lQpl8>  
public final static int IMPROVED_QUICK = 6; vw :&c.zd  
public final static int MERGE = 7; !ezy  v`  
public final static int IMPROVED_MERGE = 8; VyWzb  
public final static int HEAP = 9; n$<n Yr`X  
6foiN W+  
public static void sort(int[] data) { {Gw{W&<  
sort(data, IMPROVED_QUICK); t(UdV  
} 04:QEC"9mj  
private static String[] name={ uG(XbDZZ1W  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" EPU3Jban  
}; [0lO0ik>G  
XO}SPf-  
private static Sort[] impl=new Sort[]{ !UHX? <3r  
new InsertSort(), 3g5D[>J'  
new BubbleSort(), A}i>ys  
new SelectionSort(), sLf~o" yb  
new ShellSort(), qfF2S  
new QuickSort(), lqvP Dz  
new ImprovedQuickSort(), . dJBv  
new MergeSort(), 4jC7>mE  
new ImprovedMergeSort(), =z\/xzAwX  
new HeapSort() B^C 5?  
}; vJ e c+a  
gUme({h&|  
public static String toString(int algorithm){ oiQ:&$y  
return name[algorithm-1]; 'q l<R0g  
} XW:%YTv  
BOv^L?)*Z  
public static void sort(int[] data, int algorithm) { ie7P^:T|+  
impl[algorithm-1].sort(data); fYlqaO4[  
} dg&GMo  
S2EV[K8#  
public static interface Sort { o0TB>DX$`  
public void sort(int[] data); 0@RVM|  
} =b>e4I@  
x M{SFF  
public static void swap(int[] data, int i, int j) { 7{38g  
int temp = data; iyr<qtwK  
data = data[j]; U "v=XK)!  
data[j] = temp; M|7][! <G!  
} U5[r&Y D  
} py6O\` \  
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