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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。 .Hm>i  
插入排序: (9 d&  
r5/0u(\LB  
package org.rut.util.algorithm.support; ^\% (,KNo  
8,%^ M9zBP  
import org.rut.util.algorithm.SortUtil; N"R]Yp;j  
/** wlvgg  
* @author treeroot @HCVmg:  
* @since 2006-2-2 ajT*/L!0_  
* @version 1.0 .P]+? %&  
*/ @mBQ?; qlK  
public class InsertSort implements SortUtil.Sort{ l'qg8  
D_7,m%Z:  
/* (non-Javadoc) T-L||yE,h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r6qj7}\  
*/ z<;HQX,  
public void sort(int[] data) { Or+U@vAnk  
int temp; :cECRm*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); o|:b;\)b  
} "sCRdx]_  
} qDIZJ h  
} U)gH}0n&  
JQI: sj  
} q;CiV  
A)!*]o>U  
冒泡排序: J@'wf8Ub  
"S]TP$O D  
package org.rut.util.algorithm.support; SfyQ$$Z  
CRE3icXbQ  
import org.rut.util.algorithm.SortUtil; 'H!Uh]!  
R n[cW5Y<  
/** 0OE:[pR  
* @author treeroot x9g#<2w8  
* @since 2006-2-2 p6@)-2^  
* @version 1.0 n\DV3rXI9  
*/ t:Q*gW Rh  
public class BubbleSort implements SortUtil.Sort{ A/s?x>QA  
%$L{R  
/* (non-Javadoc) t*u:hex  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +6\Zj)  
*/ n\53wh@+  
public void sort(int[] data) { 4VSU8tK|N]  
int temp; Sm|6 %3  
for(int i=0;i for(int j=data.length-1;j>i;j--){ VA5xp]  
if(data[j] SortUtil.swap(data,j,j-1); niyV8v  
} tWRC$  
} >GRxHK@G  
} RrB&\9=  
} Otuf] B^s  
S\=Nn7"  
} )t#W{Gzfmh  
a=2%4Wmz  
选择排序: CdQ!GS<'y  
t{96p77)=  
package org.rut.util.algorithm.support; cwg"c4V  
z:*|a+cy  
import org.rut.util.algorithm.SortUtil; Z9|P'R(l  
L4HI0Mx  
/** /4Gt{yg Sr  
* @author treeroot jL luj   
* @since 2006-2-2 lo+A%\1  
* @version 1.0 :F?C)F  
*/ 4B.*g-L   
public class SelectionSort implements SortUtil.Sort { tD)J*]G  
ga+dt  
/* |{ip T SH  
* (non-Javadoc) o+'6`g'8  
* f:} x7_Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sgFEK[w.y  
*/ k,*XG$2h  
public void sort(int[] data) { *2l7f`K  
int temp; 0H:X3y+  
for (int i = 0; i < data.length; i++) { WsB?C&>x  
int lowIndex = i; U xGApK=X  
for (int j = data.length - 1; j > i; j--) { *EH~_F  
if (data[j] < data[lowIndex]) { 1qA;/-Zr<o  
lowIndex = j; {IjR^J=k  
} ]/v[8dS(l  
} })%{AfDRF  
SortUtil.swap(data,i,lowIndex); h_'*XWd@  
} AwR =]W;j  
} 9* M,R,y  
@yYkti;4-  
} x%B%f`]8  
GbI/4<)l}  
Shell排序: a7opCmL  
{l@{FUv  
package org.rut.util.algorithm.support; > (<f 0  
$& c*'3  
import org.rut.util.algorithm.SortUtil; *.[. {qG(  
Pm7}"D'/  
/** tw@X> G1z  
* @author treeroot PJ#,2=n~  
* @since 2006-2-2 L/K(dkx  
* @version 1.0 e0 ecD3  
*/ 5 qA'  
public class ShellSort implements SortUtil.Sort{ %|oym.-I6  
At;LO9T3z  
/* (non-Javadoc) h?U O&(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3v-~K)hl?  
*/ Vurq t_nb  
public void sort(int[] data) { %cn<ych G  
for(int i=data.length/2;i>2;i/=2){ Kg]J/|0\  
for(int j=0;j insertSort(data,j,i); tH4B:Bgj!  
} #'`{Qv0,  
} AbM'3Mkz  
insertSort(data,0,1); HoAy_7-5  
} 2=}FBA,2  
QJ;2ZN,  
/** t uX|\X  
* @param data ueNS='+m  
* @param j *un^u-;  
* @param i pxi3PY?  
*/ #'}*dy/  
private void insertSort(int[] data, int start, int inc) { ckn(`I  
int temp; hy!3yB@  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); HzJz+ x:  
} lOp`m8_=  
} 8@R|Km5h  
} Fr-SvsNFB  
dO\"?aiD  
} Z\sDUJ  
'"s@enD0y  
快速排序:  M6TD"-  
/-s6<e!  
package org.rut.util.algorithm.support; |s_GlJV.  
LzL So"n  
import org.rut.util.algorithm.SortUtil; E{(;@PzE  
xIn:ZKJ'  
/** e3\T)x &=  
* @author treeroot !,PWb3S  
* @since 2006-2-2 j>kqz>3  
* @version 1.0 '3;b@g,  
*/ RnN!2K  
public class QuickSort implements SortUtil.Sort{ W,u:gzmhw  
;.C\Ss<>*  
/* (non-Javadoc) j8gdlIx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zuCSj~  
*/ U0+-W07>  
public void sort(int[] data) { =(^3}x  
quickSort(data,0,data.length-1); j<$2hiI/?&  
} l,).p  
private void quickSort(int[] data,int i,int j){ G~m<;  
int pivotIndex=(i+j)/2; 2<3K3uz  
file://swap !R$`+wZ62  
SortUtil.swap(data,pivotIndex,j); \)e'`29;  
6LhTBV  
int k=partition(data,i-1,j,data[j]); v:#tWEbo-  
SortUtil.swap(data,k,j); ~LC-[&$  
if((k-i)>1) quickSort(data,i,k-1); KPki}'GO  
if((j-k)>1) quickSort(data,k+1,j); CC`JZ.SO  
7EJ+c${e.-  
} Q b%J8juRf  
/** +ge?w#R  
* @param data Vvo 7C!$z  
* @param i 6\t@)=C,Q  
* @param j ;VK.2^jW!  
* @return ~J]qP#C  
*/ rl.}%Ny  
private int partition(int[] data, int l, int r,int pivot) { lq uLT6]  
do{ nt<]d\o0  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); d-%hjy3N  
SortUtil.swap(data,l,r); S jj6q`  
} @)}L~lb[)  
while(l SortUtil.swap(data,l,r); Y-9I3?ar  
return l; c@Is2 9t*  
} l-3~K-k<@  
TqQ[_RKg2  
} Ort(AfW  
p<%d2@lp  
改进后的快速排序: 76SXJ9@x  
!IR6 ,A\  
package org.rut.util.algorithm.support; @VI@fN  
@6]JIJE  
import org.rut.util.algorithm.SortUtil; SrJE_~i  
QV8g#&z  
/** -g<oS9   
* @author treeroot n+p }\msH  
* @since 2006-2-2 &&%H%9  
* @version 1.0 9M ]_nPY  
*/ VN.Je: Ju  
public class ImprovedQuickSort implements SortUtil.Sort { kGJC\{N5N  
}B^tL$k  
private static int MAX_STACK_SIZE=4096; b2*TgnRq  
private static int THRESHOLD=10; E`J@h l$N  
/* (non-Javadoc) `@%LzeGz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X-/]IH DN  
*/ 3U}%2ARo_  
public void sort(int[] data) { ;@J}}h'y  
int[] stack=new int[MAX_STACK_SIZE]; (At$3b6  
@+DX.9  
int top=-1; DfB7*+x{  
int pivot; #Q5o)x  
int pivotIndex,l,r; tBSW|0  
MfkZ  
stack[++top]=0; {)Xy%QV  
stack[++top]=data.length-1; &j6erwaT  
p}P-6&k,U  
while(top>0){ #z42C?V  
int j=stack[top--]; cb bFw  
int i=stack[top--]; s[N@0  
_Ey5n!0:  
pivotIndex=(i+j)/2; ,z6~?6m  
pivot=data[pivotIndex]; 0`H# '/  
qSQ~D(tO  
SortUtil.swap(data,pivotIndex,j); 1*7@BP5  
Zd&S@Z  
file://partition ('~LMu_  
l=i-1; &Qm@9Is  
r=j; V6Dbd" i9  
do{ tp|d*7^i  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); $ Q0n  
SortUtil.swap(data,l,r); 31)&vf[[  
} fy$1YI>!Q  
while(l SortUtil.swap(data,l,r); 6B-16  
SortUtil.swap(data,l,j); t,' <gI  
h];I{crh  
if((l-i)>THRESHOLD){ =M-p/uB]  
stack[++top]=i; wY}@'pzX  
stack[++top]=l-1; s^SJY{  
} ]^]wP]R_  
if((j-l)>THRESHOLD){ t<qiGDJ<d  
stack[++top]=l+1; nFn5v'g  
stack[++top]=j; N g,j#  
} }7X%'Bg=M  
5 dg(e3T  
} p[cX O=  
file://new InsertSort().sort(data); adw2x pj  
insertSort(data); .(vwIb8\_  
} .V*^|UXbHi  
/** EK'!}OGCG  
* @param data Pc9H0\+Xk  
*/ v0y(58Rz.  
private void insertSort(int[] data) { 0IpmRH/  
int temp; ite~E5?#  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0$njMnB2l  
} #;<Y[hR{P  
} @ |r{;'  
} F}zDfY\-  
9FX-1,Jx  
} ~s{$WL&  
4\i[m:e=@  
归并排序: f 1d?.)  
/O9EQPm(  
package org.rut.util.algorithm.support; KmF]\:sMD  
> P)w?:k  
import org.rut.util.algorithm.SortUtil; EQ ttoOO  
Wjc'*QCPl  
/** e# bn#  
* @author treeroot g=rbPbu  
* @since 2006-2-2 54/=G(F   
* @version 1.0 y)*RV;^  
*/ YK\X+"lB  
public class MergeSort implements SortUtil.Sort{ |g~ZfnP_%  
/( LL3cZK  
/* (non-Javadoc) `x|?&Ytmf9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +n)9Tz5  
*/ Z ]ONh  
public void sort(int[] data) { <}LC~B!  
int[] temp=new int[data.length]; ;PH~<T  
mergeSort(data,temp,0,data.length-1); #1[u (<AS  
} =QsYXK7Mn4  
=T_g}pu  
private void mergeSort(int[] data,int[] temp,int l,int r){ a9G8q>h]O  
int mid=(l+r)/2; 4m)n+ll  
if(l==r) return ; [gB+C84%%  
mergeSort(data,temp,l,mid); F\! `/4  
mergeSort(data,temp,mid+1,r); {8aTV}Ha2  
for(int i=l;i<=r;i++){ *] (iS  
temp=data; l^qI, M  
} _j3fAr(V  
int i1=l; nrb Ok4Dz  
int i2=mid+1; M_8{]uo  
for(int cur=l;cur<=r;cur++){ {8OCXus3m  
if(i1==mid+1) |^aKs#va  
data[cur]=temp[i2++]; "oD[v  
else if(i2>r) 36NpfTW  
data[cur]=temp[i1++]; ceV}WN19l  
else if(temp[i1] data[cur]=temp[i1++]; 4Up/p&1@  
else }'.m*#Y  
data[cur]=temp[i2++]; c|%6e(g"L  
} ^s=8!=A(  
} C]#,+q*  
PM+[,H  
} $?Wb}DU7_L  
PeT'^?>  
改进后的归并排序: 6 r"<jh#  
ise-O1'  
package org.rut.util.algorithm.support; "fI6Cpc  
'%D7C=;^  
import org.rut.util.algorithm.SortUtil; ,)XLq8  
_L PHPj^Pg  
/** w@b)g  
* @author treeroot "8RSvT<W^5  
* @since 2006-2-2 ! z**y}<T  
* @version 1.0 P'2Qen*  
*/ E3i4=!Y  
public class ImprovedMergeSort implements SortUtil.Sort { 6-I'>\U~  
!?XC1xe~R  
private static final int THRESHOLD = 10;  eIlva?  
FtZ?C@1/  
/* >bxS3FCX  
* (non-Javadoc) -%~4W?  
* M{\I8oOg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q@&6#B  
*/ J1vR5wbu  
public void sort(int[] data) { ( =$ x.1  
int[] temp=new int[data.length]; g*Phv|kI  
mergeSort(data,temp,0,data.length-1); '7/)Ot(  
} y^k$Us  
KP"+e:a%  
private void mergeSort(int[] data, int[] temp, int l, int r) { Rv=YFo[B  
int i, j, k; S:Hl/:iV  
int mid = (l + r) / 2; 74u&%Rj  
if (l == r) <[phnU^ 8  
return; sS Mh`4'  
if ((mid - l) >= THRESHOLD) (ZGbh MK  
mergeSort(data, temp, l, mid);  <Uur^uB  
else y(&Ac[foS}  
insertSort(data, l, mid - l + 1); 6mE\OS-I  
if ((r - mid) > THRESHOLD) y2v^-q3  
mergeSort(data, temp, mid + 1, r); iwq!w6+  
else F:VIzyMq<  
insertSort(data, mid + 1, r - mid); GeqPRah  
:Al!1BJQ  
for (i = l; i <= mid; i++) { 5bIw?%dk(  
temp = data; SKtrtm  
} y9;Yiv r)  
for (j = 1; j <= r - mid; j++) { =vPj%oLp'a  
temp[r - j + 1] = data[j + mid]; lk!@?  
} s.#`&Sd>  
int a = temp[l]; z{6Z 11|  
int b = temp[r]; l.]xB,k  
for (i = l, j = r, k = l; k <= r; k++) { FlQGg VN  
if (a < b) { @c#(.=  
data[k] = temp[i++]; >usL*b0%  
a = temp; =v\.h=~~  
} else { ':q p05t  
data[k] = temp[j--]; *R"/|Ka  
b = temp[j]; BWNi [^]  
} lFk R=!?=  
} 7,MR*TO,  
} s*4dxnS_8  
3 {V>S,O3]  
/** /efUjkP  
* @param data i@q&5;%%  
* @param l )_:NLo:  
* @param i 1cDF!X]  
*/ ~rm_vo  
private void insertSort(int[] data, int start, int len) { /xQTxh1;K  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); NRuNKl.v  
} TrNF=x>  
} 0"R|..l/  
} g7|@  
} u NyVf7u  
ni<(K 0~  
堆排序: %xW"!WbJ|  
YR70BOxK  
package org.rut.util.algorithm.support; >_TZ'FT  
Om<a<q  
import org.rut.util.algorithm.SortUtil; rA1._   
"7 yD0T)2  
/** yu|>t4#GT  
* @author treeroot >lm&iF3y  
* @since 2006-2-2 dQvcXl]  
* @version 1.0 cl1T8vFM  
*/ :3PH8TL  
public class HeapSort implements SortUtil.Sort{ +t.b` U`-  
xo)P?-  
/* (non-Javadoc) [UR-I0 s!/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6Zo}(^Ovz  
*/ 54,er$$V  
public void sort(int[] data) { pCDmXB  
MaxHeap h=new MaxHeap(); W)/#0*7  
h.init(data); 5G#n"}T  
for(int i=0;i h.remove(); ^q&x7Kv%  
System.arraycopy(h.queue,1,data,0,data.length); K"6vXv4QO  
} iscz}E,Y  
#Z#-Ht  
private static class MaxHeap{ X2_=agEP  
mq l Z?-  
void init(int[] data){ Ef\ -VKh  
this.queue=new int[data.length+1]; hP h-+Hb  
for(int i=0;i queue[++size]=data; \['Cj*ek  
fixUp(size); nTas~~Q  
} #_1`)VS  
} =I<R!ZSN  
aXVFc5C\  
private int size=0; (:_$5&i7  
hp2t"t  
private int[] queue; 965 jtn  
VVZ'i.*_3?  
public int get() { hgmCRC  
return queue[1]; W^Yxny  
} D9df=lv mD  
~[ jQ!tz  
public void remove() { |pK !S  
SortUtil.swap(queue,1,size--); I]575\bA  
fixDown(1); ' QG?nu  
} R-:2HRaA  
file://fixdown ?[AD=rUC  
private void fixDown(int k) { c$,P ~W s'  
int j; HQ g^ h  
while ((j = k << 1) <= size) { w]H->B29C  
if (j < size %26amp;%26amp; queue[j] j++; sK{e*[I>W  
if (queue[k]>queue[j]) file://不用交换 9x8fhAy}4  
break; 5R-6ji  
SortUtil.swap(queue,j,k); b 6p|q_e  
k = j; XSDpRo  
} Y73C5.dNcE  
} :h$$J lP  
private void fixUp(int k) { oRFq @g  
while (k > 1) { |>Vb9:q9Po  
int j = k >> 1; ok[i<zl; '  
if (queue[j]>queue[k]) ixFi{_  
break; .8R@2c`}Cs  
SortUtil.swap(queue,j,k); m*pJBZxd  
k = j; w(/S?d  
} 6<]lW  
} 2iOV/=+  
YVU7wW,1  
} \G[$:nS  
-@s#uA h  
} 7r!x1  
M7T5 ~/4  
SortUtil: s*[bFJwN  
 Sf'CN8  
package org.rut.util.algorithm; I0 -MRU~[K  
%{|pj +  
import org.rut.util.algorithm.support.BubbleSort; \<' ?8ri#  
import org.rut.util.algorithm.support.HeapSort; L#J1b!D&<6  
import org.rut.util.algorithm.support.ImprovedMergeSort; fl(wV.Je|  
import org.rut.util.algorithm.support.ImprovedQuickSort; \Z/@C lCm  
import org.rut.util.algorithm.support.InsertSort; s#11FfF`  
import org.rut.util.algorithm.support.MergeSort; o4X{L`m  
import org.rut.util.algorithm.support.QuickSort; Wc#24:OKe3  
import org.rut.util.algorithm.support.SelectionSort; +2{Lh7Ks  
import org.rut.util.algorithm.support.ShellSort; Oz95  
Pal=F0-Q\  
/** &pRREu:[4L  
* @author treeroot %Zi} MPx  
* @since 2006-2-2 $I=~S[p  
* @version 1.0 nKY6[|!#  
*/ xEI%D|)<  
public class SortUtil { 0;k# *#w  
public final static int INSERT = 1; 3n _htgcv  
public final static int BUBBLE = 2; siI;"?  
public final static int SELECTION = 3; {.yB'.k?  
public final static int SHELL = 4; {mg2pfhB!  
public final static int QUICK = 5; M  >u_4AY  
public final static int IMPROVED_QUICK = 6; QV!up^Zso  
public final static int MERGE = 7; 2ESo2  
public final static int IMPROVED_MERGE = 8; ]DcFySyv  
public final static int HEAP = 9; r; {.%s7  
RP"kC4~1  
public static void sort(int[] data) { aOp\91  
sort(data, IMPROVED_QUICK); wT@og|M  
} icgfB-1|i  
private static String[] name={ l **X^+=$  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" dH!*!r>  
}; 6Oq 7#3]  
UNYqft4  
private static Sort[] impl=new Sort[]{ CTb%(<r  
new InsertSort(), L,\Iasv  
new BubbleSort(), @]j1:PN-  
new SelectionSort(), { FkF  
new ShellSort(), .nJz G  
new QuickSort(), s<Ziegmw|g  
new ImprovedQuickSort(), -f .,tM=  
new MergeSort(), jp,4h4C^)  
new ImprovedMergeSort(), P0@,fd<  
new HeapSort() &yg|t5o  
}; %EH)&k  
& 21%zPm  
public static String toString(int algorithm){ LVGe]lD  
return name[algorithm-1]; ?< +WG/(d  
} 1Mzmg[L8  
<)9y{J}s:  
public static void sort(int[] data, int algorithm) { -RwE%  cr  
impl[algorithm-1].sort(data); o&%g8=n%  
} %J(:ADu]  
la!~\wpa  
public static interface Sort { G{}VPcrbC  
public void sort(int[] data); FPz9N@M%Q  
} MtdG>TzUn  
54 T`OE =  
public static void swap(int[] data, int i, int j) { b6bHTH0  
int temp = data; TjH][bH5  
data = data[j]; @gblW*Zhk  
data[j] = temp; 01]f2.5  
} _6Sp QW  
} t.<i:#rj>l  
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