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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。 R|8L'H+1x  
插入排序: (nq""kO6'  
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package org.rut.util.algorithm.support; )#i"hnYpQ  
Y% \3N  
import org.rut.util.algorithm.SortUtil; beikzuC  
/** H!7?#tRU  
* @author treeroot , ~38IIS>_  
* @since 2006-2-2 +`gU{e,p  
* @version 1.0 /{hT3ncb  
*/ [<U=)!Swg  
public class InsertSort implements SortUtil.Sort{ y `FZ 0FI  
Q njK<}M9  
/* (non-Javadoc) T^#d;A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *5oQZ".vA*  
*/ nlhv  
public void sort(int[] data) { WO9vOS>  
int temp; OAs>F"  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3bezYk  
} )8g& lyT  
} =dHdq D  
} a@jM%VZ  
+J C"@  
} '@+q_v@Jl  
Ew{*)r)m  
冒泡排序: *&IvEu  
/D^ g"  
package org.rut.util.algorithm.support; $mKExW  
]!^wB 3j  
import org.rut.util.algorithm.SortUtil; HLqN=vE6  
+,YK}?e  
/** NY<qoV  
* @author treeroot ktynIN  
* @since 2006-2-2 ca3zY|Oo  
* @version 1.0 BaI-ve  
*/ oKGF'y?A>  
public class BubbleSort implements SortUtil.Sort{ k3t]lG p  
Ih.)iTs~%  
/* (non-Javadoc) bcwb'D\a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c-&Q_lB  
*/ W&cs&>F#  
public void sort(int[] data) { n_]B5U  
int temp; ./3/3& 6  
for(int i=0;i for(int j=data.length-1;j>i;j--){ (?'vT %  
if(data[j] SortUtil.swap(data,j,j-1); (_FeX22+  
} RAu(FJ  
} '[8w8,v(  
} @<$m`^H  
} v)O].Hd  
W0mvwYON[  
} k)D5>T  
}z/%b<o_  
选择排序: hNYO+LrI)  
zQ,M795@EA  
package org.rut.util.algorithm.support; ewn\'RLZ"@  
Q'3tDc<  
import org.rut.util.algorithm.SortUtil; MtPdpm6\  
mDp8JNJNE  
/** { g[kn^|  
* @author treeroot ndDF(qHr  
* @since 2006-2-2 "AXgT[ O  
* @version 1.0 DAf@-~c  
*/ Q.jThP`p  
public class SelectionSort implements SortUtil.Sort { -wx~*  
ue+{djz[4  
/* B6Ajcfy  
* (non-Javadoc) \k"CtzoX  
* q o^mp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~UeTV?)  
*/ XHJ` C\xR  
public void sort(int[] data) { h*1T3U$  
int temp; R)SY#*Y  
for (int i = 0; i < data.length; i++) { o-l-Z|)7  
int lowIndex = i; FZ]+(Q"]:  
for (int j = data.length - 1; j > i; j--) { H=~7g3  
if (data[j] < data[lowIndex]) { ,=G]tnsv^  
lowIndex = j; dcq18~  
} Y}2Sr-@u  
} gE^pOn  
SortUtil.swap(data,i,lowIndex); y4IQa.F  
} j6k"%QHf  
} uH'?Ikx"  
7hPwa3D^  
} / bH2Z  
aMHC+R1X  
Shell排序: %-K5sIz  
+zLw%WD[l  
package org.rut.util.algorithm.support; ~a_X 7  
T"X]@9g^-  
import org.rut.util.algorithm.SortUtil; KDP47A  
Q}<QE:-&E  
/** yVGf[ ~X  
* @author treeroot <Ist^ h+o  
* @since 2006-2-2 a 8Xwz@ M  
* @version 1.0 ]&D= *:c  
*/ -Edy ~;_  
public class ShellSort implements SortUtil.Sort{ Dic|n@_Fy  
p"jze3mF  
/* (non-Javadoc) i_r708ep6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o37oRv]  
*/ Pn.DeoHme  
public void sort(int[] data) { {=Jo!t;f  
for(int i=data.length/2;i>2;i/=2){ coPdyw'9&  
for(int j=0;j insertSort(data,j,i); Ck %if  
} Q_iN/F  
} -}!mi V  
insertSort(data,0,1); OX]P;#4tU  
} BaIuOZ@,  
s]kzXzRC?  
/** c[ 0`8s!  
* @param data P,-5af*;  
* @param j 8>x' . 8  
* @param i =0PGE#d{t  
*/ w >2G@  
private void insertSort(int[] data, int start, int inc) { srO>l ;Vf/  
int temp; NR8`nc1~  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); m||9,z-  
} %+|sbRBb  
} -oUNK}>  
} 9xzow,mi  
-D=Sj@G  
} Tl[*(| /C  
f#GMJ mCQs  
快速排序: hjFht+j1  
7D:rq 8$\  
package org.rut.util.algorithm.support; C^B$_?  
(&v|,.c^)1  
import org.rut.util.algorithm.SortUtil; ly6zz|c5  
F |5Au>t  
/** oCI\yp@a  
* @author treeroot $^?VyHXvY  
* @since 2006-2-2 p19@to5l  
* @version 1.0 r`EjD}2d  
*/ >s"/uo  
public class QuickSort implements SortUtil.Sort{ fvi0gE@bd  
=GF=_Ac  
/* (non-Javadoc) h:?qd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?(K=du  
*/ jg{2Sxf!c  
public void sort(int[] data) { i(cKg&+ktd  
quickSort(data,0,data.length-1); c@}t@k  
} Tt{z_gU6  
private void quickSort(int[] data,int i,int j){ </xf4.C  
int pivotIndex=(i+j)/2; |?g-8":H8P  
file://swap "gm5 DE  
SortUtil.swap(data,pivotIndex,j); Dg0rVV6c  
;i?2^xe^~c  
int k=partition(data,i-1,j,data[j]); 0hGmOUO  
SortUtil.swap(data,k,j); U Xpp1/d|e  
if((k-i)>1) quickSort(data,i,k-1); 0wV9Trp  
if((j-k)>1) quickSort(data,k+1,j); u "k< N|.3  
oxL<\4)WJ  
} Qb/:E}h]$  
/** 8uH8)  
* @param data {y6h(@I8\  
* @param i 4\v &8">LL  
* @param j AgSAjBP  
* @return {!qnHv\S  
*/ ~;Y Tz  
private int partition(int[] data, int l, int r,int pivot) { l*&N<Yu  
do{ "qR, V9\  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); S!z3$@o  
SortUtil.swap(data,l,r); 2=8PA/  
} Q25VG5 G  
while(l SortUtil.swap(data,l,r); 9Scg:}Nj  
return l; KZZY9  
} ,~ZD"'*n6g  
-PSgBH[  
} ku]?"{Xx  
URbB2 Bi  
改进后的快速排序: kI@<H<  
IHd W!q  
package org.rut.util.algorithm.support; C:5d/9k  
K#X/j'$^  
import org.rut.util.algorithm.SortUtil; FG{les+:  
QdQ1+*/+U  
/** Y.Z:H!P);$  
* @author treeroot K@cWg C  
* @since 2006-2-2 ~KkC089D  
* @version 1.0 b$#b+G{y  
*/ we^' R}d  
public class ImprovedQuickSort implements SortUtil.Sort { +BL46 Bq  
X"_ ^^d-  
private static int MAX_STACK_SIZE=4096; sHk>ek]2I  
private static int THRESHOLD=10;   P3|s}&  
/* (non-Javadoc) 0!lWxS0#=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !Pnjr T  
*/ ! {G0'   
public void sort(int[] data) { `m<O!I"A  
int[] stack=new int[MAX_STACK_SIZE]; 3Zd,"/RH  
`kQosQV  
int top=-1; 457{9k  
int pivot; J-dB  
int pivotIndex,l,r; g([:"y?  
!\BZ_guz  
stack[++top]=0; YJ"D"QD  
stack[++top]=data.length-1; j"h/v7~  
[*zg? ur  
while(top>0){ JOt(r}gU  
int j=stack[top--]; Y01! D"{\  
int i=stack[top--]; SiX<tj#HH\  
ug2W{D  
pivotIndex=(i+j)/2; Q35\wQ#  
pivot=data[pivotIndex]; p2t0 4p!  
G(#t,}S}@  
SortUtil.swap(data,pivotIndex,j); C7NSmZ  
=VuSi(d;e{  
file://partition p5or"tK  
l=i-1; H#;*kc a4  
r=j; C,l,fT  
do{ W>d)(  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); %ZWt 45A  
SortUtil.swap(data,l,r); lm;hW&O9  
} b6f OHy  
while(l SortUtil.swap(data,l,r); I]e+5 E0  
SortUtil.swap(data,l,j); ;]=w6'dP!  
,7)hrA$(  
if((l-i)>THRESHOLD){ E;C{i  
stack[++top]=i; j`RG Moq  
stack[++top]=l-1; *qO) MpG{  
} 0,ryy,2  
if((j-l)>THRESHOLD){ iD_y@+iz  
stack[++top]=l+1; T Q4L~8  
stack[++top]=j; Ri"hU/H{  
} |JYb4J4Ni  
LiT%d  
} {P~rf&Ee  
file://new InsertSort().sort(data); d8jH?P-"  
insertSort(data); naf ~#==vc  
} ySO\9#Ho  
/** 13 #ff  
* @param data ;Hk3y+&]a  
*/ (wZ!OLY%}  
private void insertSort(int[] data) { ? F #&F  
int temp; <YFDS;b|  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8ex;g^e  
} NC-K`)  
} JXU ?'@QY  
} ,k4pW&A  
70R6:  
} =+j3E<w  
%CiF;wJ  
归并排序: C-c'"FHq  
(=7"zE Cq#  
package org.rut.util.algorithm.support; j%nN*ms  
-\?-  
import org.rut.util.algorithm.SortUtil; xWzybuLp  
fIQ, }>  
/** wX]$xZ!s  
* @author treeroot Pa3-0dUr  
* @since 2006-2-2 96V8R<   
* @version 1.0 aH_c84DS  
*/ )f:i4.M  
public class MergeSort implements SortUtil.Sort{ 2\1+M)  
'|ntwK*f  
/* (non-Javadoc) nahq O|~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lgU!D |v  
*/ BVb^xL  
public void sort(int[] data) { LsERcjwwK  
int[] temp=new int[data.length]; ^ l]!'"  
mergeSort(data,temp,0,data.length-1); ! s =$UC  
} gE\ ^ vaB  
'1b 1N5~  
private void mergeSort(int[] data,int[] temp,int l,int r){ C][hH?.  
int mid=(l+r)/2; L4/ns@e  
if(l==r) return ; n~yKq"^  
mergeSort(data,temp,l,mid); $"/l*H\h  
mergeSort(data,temp,mid+1,r); >E J{ *  
for(int i=l;i<=r;i++){ KUZi3\p9W>  
temp=data; w CLniCt  
} )Ac,F6w  
int i1=l; +S(# 7  
int i2=mid+1; 3/n?g7B  
for(int cur=l;cur<=r;cur++){ ?Xypn#OPt  
if(i1==mid+1) Y`ip. Nx  
data[cur]=temp[i2++]; Bzwll  
else if(i2>r) \T_ZcV  
data[cur]=temp[i1++]; f~mwDkf?L  
else if(temp[i1] data[cur]=temp[i1++]; 6P _+:Mf  
else F-|DZ?)k5  
data[cur]=temp[i2++]; u9S*2'  
} }=bzUA`C  
} UDi(7c0.  
iw,uwh|L  
} PkDt-]G.  
'W_NRt:  
改进后的归并排序: nb/q!8  
#0<pRDXj  
package org.rut.util.algorithm.support; 2PSExK57  
Bn&P@C$7  
import org.rut.util.algorithm.SortUtil; 8m iJQIq  
^;PjO|mD Z  
/** QZvQ8  
* @author treeroot {k.:DH)  
* @since 2006-2-2 fKY-@B[|  
* @version 1.0 7Fo^ :"  
*/ j.Uy>ol  
public class ImprovedMergeSort implements SortUtil.Sort { ]}g\te  
+j<WP  
private static final int THRESHOLD = 10; PxrT@.T$  
.Bl:hk\  
/* EX{%CPp7}  
* (non-Javadoc) :.g/=Q(T~  
* 8`+=~S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qLL rR,:  
*/  <Y"RsW9  
public void sort(int[] data) { F(`|-E"E;  
int[] temp=new int[data.length]; d {U%q d  
mergeSort(data,temp,0,data.length-1); +&G(AW  
} ENhLonM eV  
6NV592  
private void mergeSort(int[] data, int[] temp, int l, int r) { s 7 nl  
int i, j, k; ZUHW*U.  
int mid = (l + r) / 2; @~hy'6/  
if (l == r) k)>H=?mI  
return; Ql5bjlQdO  
if ((mid - l) >= THRESHOLD) o i'iZX  
mergeSort(data, temp, l, mid); ),N,!15j,  
else ~fkcal1@  
insertSort(data, l, mid - l + 1); q#AEu xI1  
if ((r - mid) > THRESHOLD) M(+Pd_c6  
mergeSort(data, temp, mid + 1, r); 8+w*,Ry`  
else ]}/Rl}_  
insertSort(data, mid + 1, r - mid); ,HDhP  
ASy?^Jrs5  
for (i = l; i <= mid; i++) { 7(o`>7x*  
temp = data; D@uVb4uK  
} o$L%t@   
for (j = 1; j <= r - mid; j++) { |E6_TZ#=  
temp[r - j + 1] = data[j + mid]; e: Sd#H!  
} JR `$t~0t  
int a = temp[l]; xwD`R *  
int b = temp[r]; ir.RO7f  
for (i = l, j = r, k = l; k <= r; k++) { cL#-vW<s3  
if (a < b) { *RS/`a;,  
data[k] = temp[i++]; Fya*[)HBo  
a = temp; }'wZ)N@  
} else { $BehU  
data[k] = temp[j--]; c9Et Uv~  
b = temp[j]; _$$.5?4  
} ^)]U5+g?  
} F,S)P`?  
} u=nd7:bv  
K.QSt  
/** zl8M<z1`1  
* @param data i=<;$+tW  
* @param l cu>(;=  
* @param i }6a}8EyFP  
*/ )@DDs(q=i  
private void insertSort(int[] data, int start, int len) { =!SV;^-q  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 1]''@oh{6U  
} Ld.9.d]  
} nQV0I"f]?]  
} $#f_p-N  
} u4FD}nV  
6ZE`'pk<  
堆排序: =At" Q6-O  
%R?7u'=~  
package org.rut.util.algorithm.support; QErdjjg E  
\9`E17i  
import org.rut.util.algorithm.SortUtil; V. i{IW  
:8O T  
/** 8:c=h/fa  
* @author treeroot v zs4tkG  
* @since 2006-2-2 fWJpy#/^*K  
* @version 1.0 OcV,pJ  
*/ eef&ZL6g  
public class HeapSort implements SortUtil.Sort{ t!3s@  
O#;sY`fy_M  
/* (non-Javadoc) `oNJ=,p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2LN6pu  
*/ X7-*`NI^  
public void sort(int[] data) { A"pQOtrm\k  
MaxHeap h=new MaxHeap(); \;MP|:{pU  
h.init(data); [ S  
for(int i=0;i h.remove(); } .045 Wuu  
System.arraycopy(h.queue,1,data,0,data.length); AHn!>w,  
} }kQ{T:q4  
zB0*KgAn{  
private static class MaxHeap{ 'A5T$JV.r4  
d`rZgY  
void init(int[] data){ MuMq%uDA"  
this.queue=new int[data.length+1]; W2rd [W  
for(int i=0;i queue[++size]=data; LQk^l`  
fixUp(size); LTS{[(%  
} &Cb,C+q  
} M7?ktK9`ma  
s? ;8h &]=  
private int size=0; ',g%L_8Sq  
'd Be,@  
private int[] queue; Ojz'p5d`>  
3m75mny  
public int get() { Nzgi)xX0HX  
return queue[1]; ?xv."I%  
} `w#VYs|k  
nxV!mh_  
public void remove() { OEaL2T  
SortUtil.swap(queue,1,size--); 6oLOA}q   
fixDown(1); eb`3'&zV&)  
} &c!6e<o[p  
file://fixdown vC>2%Zgf-  
private void fixDown(int k) { })<u ~r  
int j; O^CBa$  
while ((j = k << 1) <= size) { uQc("F  
if (j < size %26amp;%26amp; queue[j] j++; F-zIzzb&O  
if (queue[k]>queue[j]) file://不用交换 h[qZM  
break; ?7wcv$K5  
SortUtil.swap(queue,j,k); k^|z.$+  
k = j; ox`Zs2-a  
} ppn  8  
} <QvVPE}z   
private void fixUp(int k) { RuYIG?J=/  
while (k > 1) { 67&IaDts  
int j = k >> 1; uMva5o  
if (queue[j]>queue[k]) ] / Nt  
break; 7xO05)bz  
SortUtil.swap(queue,j,k); _+ 9i  
k = j; |U1 [R\X  
} A z@@0  
} :|kO}NGM  
;b 65s9n^b  
} *w0|`[P+h  
*(5;5r  
} ds+K7B$  
\( V1-,  
SortUtil: I,#E`)  
i[9gcL"  
package org.rut.util.algorithm; @,1_CqV  
@` Pn<_L  
import org.rut.util.algorithm.support.BubbleSort; `lE&:)  
import org.rut.util.algorithm.support.HeapSort; I~F&@  
import org.rut.util.algorithm.support.ImprovedMergeSort; ,nL~?h-Zh  
import org.rut.util.algorithm.support.ImprovedQuickSort; j[i*;0) |  
import org.rut.util.algorithm.support.InsertSort; p5E okh  
import org.rut.util.algorithm.support.MergeSort; >;Oa|G  
import org.rut.util.algorithm.support.QuickSort; C)FO:lLr\  
import org.rut.util.algorithm.support.SelectionSort; @C@9Tw2Y  
import org.rut.util.algorithm.support.ShellSort; QyL]-zNg  
Bj4c_YBte  
/** vkJyD/;=  
* @author treeroot N KgEs   
* @since 2006-2-2 kM4z %  
* @version 1.0 e@V J-s  
*/ X=-=z5  
public class SortUtil { 2~/`L=L  
public final static int INSERT = 1; XdDQ$'*X  
public final static int BUBBLE = 2; SujEF` "  
public final static int SELECTION = 3; CC!`fX6z>h  
public final static int SHELL = 4; Pi=FnS  
public final static int QUICK = 5; aWimg6q  
public final static int IMPROVED_QUICK = 6; |-vyhr 0  
public final static int MERGE = 7; 0vLx={i  
public final static int IMPROVED_MERGE = 8; 1J1Jp|j.  
public final static int HEAP = 9; *A!M0TK?i,  
A4(L47^  
public static void sort(int[] data) { XM!oN^  
sort(data, IMPROVED_QUICK); DZL(G [  
} i 7T#WfF  
private static String[] name={ }2S!;swg+  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 6!0NFP~b  
}; _YR#J%xa  
cd,'37pZ  
private static Sort[] impl=new Sort[]{ cHr]{@7Cs  
new InsertSort(), YIW9z{rrs  
new BubbleSort(), bE% Hm!  
new SelectionSort(), 'X+aYF }Ye  
new ShellSort(), H#GR*4x  
new QuickSort(), 5K9W5hA:D  
new ImprovedQuickSort(), (9( xJ)  
new MergeSort(), %P1zb7:8  
new ImprovedMergeSort(), f 5bX,e)!  
new HeapSort() Y<POdbg  
}; z5({A2q  
hoBFC1  
public static String toString(int algorithm){ l+6@,TY1U  
return name[algorithm-1]; 4d@0v n{  
} M6MxY\uM  
mQ}\ptdfV  
public static void sort(int[] data, int algorithm) { Eyf17  
impl[algorithm-1].sort(data); 74 ptd,  
} rkS'OC  
+Q_xY>ej  
public static interface Sort { +e>G V61  
public void sort(int[] data);  >h2qam  
} "K>!+<  
9{nU\am!\  
public static void swap(int[] data, int i, int j) { X)]>E]X  
int temp = data; !V#*(_+n  
data = data[j]; ?xKiN5q"6  
data[j] = temp; O<!^^7/h0  
} R-n%3oh  
} 6C.!+km  
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