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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。 ,!bOzth2>K  
插入排序: ;jI\MZ~l\  
hLJO\=0rJz  
package org.rut.util.algorithm.support; w;{k\=W3Ff  
zg|yW6l)9  
import org.rut.util.algorithm.SortUtil; 9;JU c0%  
/** qlDLZ.  
* @author treeroot sm\/wlbE  
* @since 2006-2-2 */?L_\7  
* @version 1.0 x{RTI#a.  
*/ $"x(:  
public class InsertSort implements SortUtil.Sort{ 4!iS"QH?;^  
i~k?k.t8  
/* (non-Javadoc) qdUlT*fw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F'|,(P  
*/ ^3AJYu  
public void sort(int[] data) { -/7[_,  
int temp; Tcr&{S&o  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); j+Wgjf  
} (?q]E$ @  
} 5C{X$7u  
} 0.&gm@A~c$  
yvNYYp2r  
} @WFjM  
aLq=%fsV)  
冒泡排序: L'z?M]  
r}03&h~Hc&  
package org.rut.util.algorithm.support; QT^( oog=  
I]ywO4  
import org.rut.util.algorithm.SortUtil; zXZy:SD  
:sM|~gT  
/** ("mW=Ln  
* @author treeroot h7(twct  
* @since 2006-2-2 t1IC0'o-  
* @version 1.0 HHtp.; L/  
*/ JEFW}M)UGv  
public class BubbleSort implements SortUtil.Sort{ 0#<_:E  
EL~s90C  
/* (non-Javadoc) ; Sh|6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f~W.i]  
*/  '6 w|z^  
public void sort(int[] data) { zCPjuS/~ Q  
int temp; 1NJ*EzJ~?  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Ya\G/R  
if(data[j] SortUtil.swap(data,j,j-1); _%<7!|"  
} b*.)m  
} #v~zf@<KLB  
} |!IJ/ivEgw  
} d5sG t#   
BWw7o{d  
} |%zhwDQ.  
lWnV{/q\X  
选择排序: qWQJ>  
xZ4\.K\f]  
package org.rut.util.algorithm.support; >+1^XeeS  
c WK@O>  
import org.rut.util.algorithm.SortUtil; \U~ggg0h  
RTF{<,E.UX  
/** /j3oHi$  
* @author treeroot vR+(7^Yy  
* @since 2006-2-2 MQR2UK (  
* @version 1.0 VAq( t  
*/ F \} Kh3  
public class SelectionSort implements SortUtil.Sort { zXVQLz5  
@/|sOF;8W  
/* ;zz"95X7  
* (non-Javadoc) LnR3C:NO k  
* +wT,dUin_<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7 yF#G9,  
*/ EEaKT`/d  
public void sort(int[] data) { /R@(yT=t  
int temp; <|.S~HLTQ  
for (int i = 0; i < data.length; i++) { @LwhQ  
int lowIndex = i; sM~CP zMa  
for (int j = data.length - 1; j > i; j--) { +R#*eo;o7  
if (data[j] < data[lowIndex]) { Nnv&~ D>  
lowIndex = j; ,0#OA* 0B  
} $OjsaE %  
} GlD@Ud>o)  
SortUtil.swap(data,i,lowIndex); nJ2l$J<  
} a$9UUH-|  
} h3O5DP6~  
i_gS!1Z2  
} f_;3|i  
%!YsSk,   
Shell排序:  ocL  
Z < uwqA  
package org.rut.util.algorithm.support; Rs<,kMRGVL  
5<d Y,FvX  
import org.rut.util.algorithm.SortUtil; e(!a~{(kq%  
xx/DD%IZ  
/** ^Ko0zz|R/  
* @author treeroot %}$6#5"';  
* @since 2006-2-2 |fRajuA;  
* @version 1.0 )xTp7YnZ;  
*/ bh+R9~  
public class ShellSort implements SortUtil.Sort{ ed\,FWR  
'7_'s1  
/* (non-Javadoc) _^&oNm1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NK"y@)%0  
*/ QRt(?96  
public void sort(int[] data) { }14.u&4  
for(int i=data.length/2;i>2;i/=2){ 5Vut4px  
for(int j=0;j insertSort(data,j,i); "q]v2t  
} u45e>F=  
} V|b?H6Q  
insertSort(data,0,1); \a|gzC1G  
} 2.; OHQTE  
.l#Pmd!  
/** r2U2pAy#  
* @param data ?:H9xJ_^  
* @param j sH+]lTSX6{  
* @param i Snh\Fgdz  
*/ eb( =V *  
private void insertSort(int[] data, int start, int inc) { 0} P&G^%"  
int temp; O\G%rp L$w  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); *sL'6"#Cre  
} +.>O%pNj  
} z!RA=]3h  
} Z39^nGO  
>1joCG~  
} &dOV0y_  
Q[~O`Lz  
快速排序: p&ow\A O  
P#Eqe O  
package org.rut.util.algorithm.support; 'n>|jw)  
%f:'A%'Qb  
import org.rut.util.algorithm.SortUtil; g:f0K2)\r:  
q:?g?v  
/** 0imz }Z]  
* @author treeroot uy`U1>  
* @since 2006-2-2 '# (lq5 c  
* @version 1.0 ?$r+#'asd(  
*/ Ww8C![ ,  
public class QuickSort implements SortUtil.Sort{ b<:s{f"t,  
@ ?e;Jp9  
/* (non-Javadoc) lzxn} TO}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6E_YQbdy  
*/ SkPv.H0Id  
public void sort(int[] data) { ODEy2).  
quickSort(data,0,data.length-1); *wh'4i}u  
} aD 3$z;E  
private void quickSort(int[] data,int i,int j){ x`B :M7+\  
int pivotIndex=(i+j)/2; l(&CO<4q?  
file://swap 7Y#b7H  
SortUtil.swap(data,pivotIndex,j); :ye)%UU"|:  
Odbjl[>k  
int k=partition(data,i-1,j,data[j]); C*c=@VAa  
SortUtil.swap(data,k,j); 8<_WtDg  
if((k-i)>1) quickSort(data,i,k-1); Q jQJ "  
if((j-k)>1) quickSort(data,k+1,j); sPd5f2'  
gHox{*hb[  
} d(]LRIn~1  
/** 4J I;NN  
* @param data W^y F5  
* @param i L`"cu.l  
* @param j f_z2d+  
* @return czHO)uQ?d`  
*/ G~m(&,:Mu  
private int partition(int[] data, int l, int r,int pivot) { V8,$<1Fi;-  
do{ pw(`+x]  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); kWoy%?|RRa  
SortUtil.swap(data,l,r); />f`X+d  
} Nwu#,f=X  
while(l SortUtil.swap(data,l,r); nLQ X? :  
return l; uO":\<1#  
} L(8Q%oX%o  
h\.UUC&<  
} wx57dm+  
MhJ`>.z1  
改进后的快速排序: XP(q=Mw  
8PQ$X2)  
package org.rut.util.algorithm.support; $@K+yOq+u  
Y-,#3%bT;;  
import org.rut.util.algorithm.SortUtil; @${!C\([1  
@j^qT-0M  
/** 1TbKnmTx  
* @author treeroot Xf#;GYO|2  
* @since 2006-2-2 LW2Sko?Yo  
* @version 1.0 ,xR^8G 8  
*/ x#ouR+<  
public class ImprovedQuickSort implements SortUtil.Sort { |d,1mmv@K  
y:W$~<E`p  
private static int MAX_STACK_SIZE=4096; ZZeqOu7^  
private static int THRESHOLD=10; 4!monaB"e  
/* (non-Javadoc) wS:323 !l$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YemOP9  
*/ xE0+3@_>>  
public void sort(int[] data) { 0<^K0>lm p  
int[] stack=new int[MAX_STACK_SIZE]; >i=O =w  
DU[UGJg  
int top=-1; (jQL?  
int pivot; 8, WQ}cC  
int pivotIndex,l,r; vn kktD'n  
WOg_Pn9HI  
stack[++top]=0; ]jy6C'Mp  
stack[++top]=data.length-1; 40:YJ_n  
%*/?k~53  
while(top>0){ ^K;,,s;0  
int j=stack[top--]; ; 4S#6#  
int i=stack[top--]; 3J [P(G>Q  
zlXkD~GV  
pivotIndex=(i+j)/2; >j$f$*x  
pivot=data[pivotIndex]; |5Z@7  
"5>p]u>  
SortUtil.swap(data,pivotIndex,j); ^:DlrI$  
- +>~  
file://partition 9g 2x+@5T^  
l=i-1; Z9!goI  
r=j; -`Z5#8P  
do{ xXHz)w  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); {N _v4})  
SortUtil.swap(data,l,r); ,ciNoP*-~%  
} (-~tb-  
while(l SortUtil.swap(data,l,r); |1t30_ /gS  
SortUtil.swap(data,l,j); Nzr zLK  
qdcCX:Z<  
if((l-i)>THRESHOLD){ d/* [t!   
stack[++top]=i; w0 "h,{  
stack[++top]=l-1; m&; t;&#  
} >~ne(n4qy  
if((j-l)>THRESHOLD){ j)J4[j  
stack[++top]=l+1; (]iw#m{  
stack[++top]=j; h~F uuL  
} l "d&Sgnj  
VF 6@;5p  
} 5V%K'a(  
file://new InsertSort().sort(data); <'s1+^LC  
insertSort(data); q4U?}=PD  
} fT 8"1f|w  
/** /'">H-r  
* @param data KsHovv-A  
*/ e[{LNM{/#  
private void insertSort(int[] data) { C \}m_`MR  
int temp; ty7a&>G  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )iEK7d^-  
} yqB{QFXO  
} op}x}Ioz  
} }F@`A?k  
<H#D/?n5  
} 'g ,Oi1|~  
44S<(Re  
归并排序: M,mj{OY~x  
"-I>  
package org.rut.util.algorithm.support; Imv kB~8N  
6,oi(RAf  
import org.rut.util.algorithm.SortUtil; a2x2N_\=/D  
mu:Q2t^  
/** hbN*_[  
* @author treeroot nY(jN D  
* @since 2006-2-2 '6K WobXm  
* @version 1.0 }*? e w  
*/ $`]<4I9d  
public class MergeSort implements SortUtil.Sort{ =Ybbh`$<  
|w\D6d]o  
/* (non-Javadoc) 85nUR [)h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F\>`j   
*/ f^0vkWI2  
public void sort(int[] data) { <G6wpf8M  
int[] temp=new int[data.length]; A0&~U0*(~  
mergeSort(data,temp,0,data.length-1);  V+(  
} )_+#yaC  
>~XX'}  
private void mergeSort(int[] data,int[] temp,int l,int r){ '+-R 7#  
int mid=(l+r)/2; yqCy`TK8  
if(l==r) return ; y.mojx%?a  
mergeSort(data,temp,l,mid); %f, 9  
mergeSort(data,temp,mid+1,r); cZ o]*Gv.  
for(int i=l;i<=r;i++){ a1om8!C  
temp=data; R=8!]Oi6  
} Y B)1dzU  
int i1=l;  %_A1WC  
int i2=mid+1; nA+[[(6  
for(int cur=l;cur<=r;cur++){ S: /ShT  
if(i1==mid+1) l*%?C*  
data[cur]=temp[i2++]; |=GRPvvi  
else if(i2>r) pY-iz M L  
data[cur]=temp[i1++]; 'v\!}6  
else if(temp[i1] data[cur]=temp[i1++]; Sgr<z d'b  
else &Vl,x/  
data[cur]=temp[i2++]; y ?Q"-o (  
} b6g,mzqu  
} 6 *Q5.g  
tF`>.=  
} tT'd]  
`&0?e-  
改进后的归并排序: Wx:_F;  
Gb~q:&IUr  
package org.rut.util.algorithm.support; )5]z[sE  
I,?bZ&@8  
import org.rut.util.algorithm.SortUtil; }eB\k,7L  
i?|K+"=D  
/** :B"'49Q`  
* @author treeroot Cr(pN[,  
* @since 2006-2-2 AV%Q5Mi}  
* @version 1.0 !nykq}kPN\  
*/ MRmz/ZmRM  
public class ImprovedMergeSort implements SortUtil.Sort { 9:@os0^O  
]kKf4SJZFU  
private static final int THRESHOLD = 10; }H^#}  
d(fgv  
/* TcRnjsY$  
* (non-Javadoc) L{(r@Vu  
* 7N'F]x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b6]M}ixK  
*/ Z$[A.gD4  
public void sort(int[] data) { M2V.FYV{j>  
int[] temp=new int[data.length]; 3ON]c13  
mergeSort(data,temp,0,data.length-1); v[lytX4)  
} BNzL+"W  
6"%[s@C  
private void mergeSort(int[] data, int[] temp, int l, int r) { e {c.4'q  
int i, j, k; #|$7. e  
int mid = (l + r) / 2; oNiS"\t  
if (l == r) !3T x\a`?/  
return; E$Ge# M@dM  
if ((mid - l) >= THRESHOLD) Y*"%;e$tg  
mergeSort(data, temp, l, mid); xD_jfAH'  
else 2RM1-j ($  
insertSort(data, l, mid - l + 1); gqe z-  
if ((r - mid) > THRESHOLD) 8V4Qyi|@F  
mergeSort(data, temp, mid + 1, r); c&R .  
else .+B!mmp  
insertSort(data, mid + 1, r - mid); Fs&m'g  
}Efp{E  
for (i = l; i <= mid; i++) { O<%U*:B  
temp = data; EBebyQcon  
} )8iDjNM<  
for (j = 1; j <= r - mid; j++) { iJsw:Nc  
temp[r - j + 1] = data[j + mid]; R>Zn$%j\  
} `SIJszqc  
int a = temp[l]; AM Rj N;  
int b = temp[r]; 9jvg[ H  
for (i = l, j = r, k = l; k <= r; k++) { zpa'G1v  
if (a < b) { [N$@nA-d  
data[k] = temp[i++]; *nC<1.JW  
a = temp; 7 s[ ATu  
} else { NT8%{>F`  
data[k] = temp[j--]; 4P` \fz  
b = temp[j];  sRoZvp 5  
} t+h"YiT  
} J(l6(+8  
} @MN>ye'T  
06=eA0JI  
/** $G=\i>R.  
* @param data WMI/Y 9N  
* @param l [NKWudq  
* @param i ? X:RrZ:/  
*/ wvq<5gy}  
private void insertSort(int[] data, int start, int len) { VD=$:F]  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); *w%;$\^  
} 4&&j7$aV  
} OB"QWdh  
} 2QBtwlQ?[  
} +ckj]yA;  
.b]oB_  
堆排序: bz>#}P=58G  
m7!l3W2  
package org.rut.util.algorithm.support; J4co@=AJ  
B3yn:=80  
import org.rut.util.algorithm.SortUtil; "= %-  
%Z}dY~:  
/** *:d_~B?Tn  
* @author treeroot :A 1,3g  
* @since 2006-2-2 `rs1!ZJ,  
* @version 1.0 tPp }/a%D  
*/ TZHqn6  
public class HeapSort implements SortUtil.Sort{ MD1,KH+O  
*tP,Ol  
/* (non-Javadoc) C8{CKrVE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RF6|zCWuI  
*/ Dxu )by  
public void sort(int[] data) { -> <_J4  
MaxHeap h=new MaxHeap(); T]i~GkD\  
h.init(data); 2.:b   
for(int i=0;i h.remove(); Wh4lz~D\@  
System.arraycopy(h.queue,1,data,0,data.length); "Dy&`  
} X0=R @_KY  
'kUrSM'*$N  
private static class MaxHeap{ $MsM$]~  
[jLx}\]  
void init(int[] data){ nl?|X2?C  
this.queue=new int[data.length+1]; PH=wP ft  
for(int i=0;i queue[++size]=data; -,+JE0[  
fixUp(size); ~#j `+  
} Y#N'bvE|%  
} [Zua7&(5  
D@W m-  
private int size=0; KztF#[64W^  
lL83LhE}<  
private int[] queue; PB9<jj;  
@B[=`9KF[  
public int get() { m1`ln5(R  
return queue[1]; S@*@*>s^  
} ll5Kd=3  
VLOyUt~O#  
public void remove() { f|apk,o_  
SortUtil.swap(queue,1,size--); SD697L9  
fixDown(1); o@>5[2b4  
} CiMN J  
file://fixdown y\%4Dir  
private void fixDown(int k) { =RV$8.Xp  
int j; @lBH@HR=C  
while ((j = k << 1) <= size) { %ZZ}TUI W  
if (j < size %26amp;%26amp; queue[j] j++; ho:,~ A;k  
if (queue[k]>queue[j]) file://不用交换 a<HM|dcst  
break; ^7_<rs   
SortUtil.swap(queue,j,k); 'i@Y #F%D  
k = j; Lv5AtZl}  
} ^^%*2^  
} 7"S|GEs:  
private void fixUp(int k) { kPxrI=  
while (k > 1) { {fS/ZG"5<t  
int j = k >> 1; Dbtw>:=  
if (queue[j]>queue[k]) O=+C Kx@  
break; *]H ./a:1  
SortUtil.swap(queue,j,k); _R8-Hj E  
k = j; &0o&!P8CB  
} -BjB>Vt  
} "o TwMU  
J5l:_hZUV  
} jwE<}y I  
xW^<.@Agm  
} oZzE.Q1T  
xAoozDj  
SortUtil: )_&<u\cm L  
&2Y>yFB ,  
package org.rut.util.algorithm; T8RQM1D_s  
9^}GUJy?  
import org.rut.util.algorithm.support.BubbleSort; GEvif4  
import org.rut.util.algorithm.support.HeapSort; +^"|FtKhE  
import org.rut.util.algorithm.support.ImprovedMergeSort; VWNmqeP  
import org.rut.util.algorithm.support.ImprovedQuickSort; I 4EocM=  
import org.rut.util.algorithm.support.InsertSort; >M +!i+  
import org.rut.util.algorithm.support.MergeSort; (*M(gM{;  
import org.rut.util.algorithm.support.QuickSort; 8,H  
import org.rut.util.algorithm.support.SelectionSort; 6Es-{u(,  
import org.rut.util.algorithm.support.ShellSort; HWHGxg['r  
.jRXHrK;  
/** k r/[|.bq  
* @author treeroot CE+\|5u W  
* @since 2006-2-2 vu*08<M~i|  
* @version 1.0 WM"I r1  
*/ `@:^(sMo  
public class SortUtil { 4+uAd"  
public final static int INSERT = 1; Yt{Y)=_t  
public final static int BUBBLE = 2; 5ax/jd~}  
public final static int SELECTION = 3; v8WoV*  
public final static int SHELL = 4; f"PApV9[  
public final static int QUICK = 5;  k&rl%P  
public final static int IMPROVED_QUICK = 6; }2{%V^D)r  
public final static int MERGE = 7; N(IUNL  
public final static int IMPROVED_MERGE = 8; irL ehPX9  
public final static int HEAP = 9; iKdC2m  
Cx@,J\rsQ  
public static void sort(int[] data) { 'DKP-R"  
sort(data, IMPROVED_QUICK);  %RJW@~!  
} 6x.#K9@q4  
private static String[] name={ B,A/ -B\  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ,iHl;3bu  
}; !!P)r1=g  
3L;)asF  
private static Sort[] impl=new Sort[]{ S3n$  
new InsertSort(), &yP9vp="  
new BubbleSort(), N2~Nc"L  
new SelectionSort(), 0{jRXa-(  
new ShellSort(), !e%#Zb MIo  
new QuickSort(), kdv>QZ  
new ImprovedQuickSort(), UyvFR@  
new MergeSort(), Ddu$49{S:  
new ImprovedMergeSort(), kgA')]  
new HeapSort() ++FMkeHZ  
}; gE%-Pf~  
=*I>MgCJ  
public static String toString(int algorithm){ dvUJk<;w  
return name[algorithm-1]; jd$lu^>I  
} udw5A*Ls  
,qC_[PUT  
public static void sort(int[] data, int algorithm) { Qn6&M  
impl[algorithm-1].sort(data); UZXnABg,J  
} {o;J'yjre1  
|KkVt]ZQe9  
public static interface Sort { oS]XE!^M  
public void sort(int[] data); \=nY&Ml  
} ]xFd_OHdb  
6W$k^<S  
public static void swap(int[] data, int i, int j) { F+}MW/ra@  
int temp = data;  ;BpuNB  
data = data[j]; ;Cv x48  
data[j] = temp; G<>`O;i  
} #LcF;1o%o2  
} rH & ^SNc  
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