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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。 iYHC a }  
插入排序: a="\?L5  
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package org.rut.util.algorithm.support; 2%F!aeX  
r=o\!sh[  
import org.rut.util.algorithm.SortUtil; !tL&Ktoj  
/** 7w]NG`7  
* @author treeroot h-`*S&mZ  
* @since 2006-2-2 A(#4$}!n5  
* @version 1.0 (#"iZv,  
*/ ?()$imb*  
public class InsertSort implements SortUtil.Sort{ v%%;Cp73  
lq%6~va  
/* (non-Javadoc) )5(Ko <"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qIIl,!&}A  
*/ uNcE_<  
public void sort(int[] data) { LG qg0 (  
int temp; N=X(G(  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \X?GzQkr  
} qr~= S  
} lx!9KQAM*  
} (i*;V0  
yj+HU5L4  
} 0,x<@.pW  
T)QT_ST.9  
冒泡排序: |G QFNrNx  
4}\Dr %US  
package org.rut.util.algorithm.support; [x.Dw U%S  
%bs~%6)  
import org.rut.util.algorithm.SortUtil; Pd[&&!+gV  
5yhfCe m|  
/** !]-ET7  
* @author treeroot -'9sn/  
* @since 2006-2-2 %?7j Q  
* @version 1.0 ct3^V M&/  
*/ JTxHM?/G  
public class BubbleSort implements SortUtil.Sort{ @4Ox$M  
%HNe"7gk  
/* (non-Javadoc) ?z2k 74&M^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~e)`D nJ  
*/ ?l3PDorR  
public void sort(int[] data) { d&'}~C`~k  
int temp; re `B fN  
for(int i=0;i for(int j=data.length-1;j>i;j--){ kZsat4r  
if(data[j] SortUtil.swap(data,j,j-1); MJ )aY2  
} * @QC:1k  
} kh'R/Dt  
} 'z=QV{ni  
} U6pG  
BZP~m=kq  
} \Q5Jg  
f[b x|6  
选择排序: A{!D7kwTz~  
iA^GA8dn  
package org.rut.util.algorithm.support; n;eK2+}]  
f~LM-7!zf}  
import org.rut.util.algorithm.SortUtil; YMSA[hm  
2[Ja|W\If  
/** UqP %S$9  
* @author treeroot c%|18dV  
* @since 2006-2-2 -<'&"-  
* @version 1.0 5Z`9L| 3d  
*/ 3+%c*}KC~  
public class SelectionSort implements SortUtil.Sort { FTihxC?.L  
,pgpu !  
/* d +]Gw  
* (non-Javadoc) B^z3u=ll  
* ZS-O,[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K'`N(WiL  
*/ 0;b%@_E  
public void sort(int[] data) { Z"# /,?|3@  
int temp;  {ws:g![  
for (int i = 0; i < data.length; i++) { Puu O2TZ  
int lowIndex = i; <V}^c/c!  
for (int j = data.length - 1; j > i; j--) { ,~!rn}MI<  
if (data[j] < data[lowIndex]) { r&G=}ZMO  
lowIndex = j; B/(]AWi+  
} PLi[T4u  
} ]yxRaW9f  
SortUtil.swap(data,i,lowIndex); uKI2KWU?2  
} 3MR4yw5v  
} @bN`+DC!<  
$6ZO V/0  
} >taC_f06  
*g}(qjl<  
Shell排序: ^cE|o&Rm;  
g|W|>`>  
package org.rut.util.algorithm.support; A.!V*1h{  
F+Qp mVU  
import org.rut.util.algorithm.SortUtil; s uT#k3  
(f^K\7HM  
/** nyZUf{:  
* @author treeroot A=7  [^I2  
* @since 2006-2-2 L}bS"=B[&W  
* @version 1.0 cG|ihG5)  
*/ je^!W?U4<  
public class ShellSort implements SortUtil.Sort{ ,cR=W|6cQm  
Y7{9C*>  
/* (non-Javadoc) !BN7 B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +H[G D!  
*/ F[Dhj,C"  
public void sort(int[] data) { SArSi6vF  
for(int i=data.length/2;i>2;i/=2){ $Ik\^:-  
for(int j=0;j insertSort(data,j,i); w6k\po=  
} Rh7unJ  
} Fd:A^]  
insertSort(data,0,1); aZ%  
} F2 /-Wk@  
-kp! .c  
/** 5B [kZ?>  
* @param data #x"dWi (  
* @param j 26fbBt8nP  
* @param i ^^[MDjNy@  
*/ U*G9fpVy  
private void insertSort(int[] data, int start, int inc) { `!?SA<a:  
int temp; fr~e!!$H  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ~/hyf]*j  
} <<@vy{*Hg  
} "(uEcS2<  
} IfHB+H   
[KIK}:  
} *I0{1cST  
Xg |_  
快速排序: 8iTX}$t\{  
P 0xInW F  
package org.rut.util.algorithm.support; uf;^yQi  
6Sh0%F s  
import org.rut.util.algorithm.SortUtil; ipB*]B F[  
]| oh1q  
/** |A_yr/f  
* @author treeroot F&}>2QiL  
* @since 2006-2-2 (\ `knsE!  
* @version 1.0 30 Vv Zb  
*/ [4:_6vd7X  
public class QuickSort implements SortUtil.Sort{ 41y}n{4n8  
V\8vJ3.YV  
/* (non-Javadoc) j_PICv*6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fx']kn9  
*/ e-;$Iv  
public void sort(int[] data) { ,fQc0gM=[  
quickSort(data,0,data.length-1); j[ !'l,I  
} 0Y#S2ty  
private void quickSort(int[] data,int i,int j){ xX l^\?HC  
int pivotIndex=(i+j)/2; f $MVgX  
file://swap +:4J~Cuf  
SortUtil.swap(data,pivotIndex,j); "(/ 1]EH`  
tp2CMJc{L  
int k=partition(data,i-1,j,data[j]); Q7O8']~n  
SortUtil.swap(data,k,j); D'e'xU  
if((k-i)>1) quickSort(data,i,k-1); SGn:f>N  
if((j-k)>1) quickSort(data,k+1,j); JFVal#  
pX ]K-  
} $FEG0&  
/** nfck3h  
* @param data yu~~"Rq)  
* @param i ^YzFEu$  
* @param j :70cOt~Z  
* @return L_uliBn  
*/ 1,fjdd8OM;  
private int partition(int[] data, int l, int r,int pivot) { ot P7;l  
do{ HaI  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Jq)!)={  
SortUtil.swap(data,l,r); z8+3/jLN0B  
} X_XeI!,b  
while(l SortUtil.swap(data,l,r); /!,>P[Vx  
return l; \3w=')({  
} #LEK?]y  
-?n|kSHX  
} H"f%\'  
rgheq<B:  
改进后的快速排序: n\ aG@X%oq  
ipfiarT~)  
package org.rut.util.algorithm.support;  lTsl=  
uZ*;%y nQ  
import org.rut.util.algorithm.SortUtil; |) QE+|?P  
4;8 Z?.  
/** $d.UF!s  
* @author treeroot 1cWUPVQ  
* @since 2006-2-2 dC;@ Fn  
* @version 1.0 -#= v~vE  
*/ NK'awv),pM  
public class ImprovedQuickSort implements SortUtil.Sort { bY7d  
;,n{6`  
private static int MAX_STACK_SIZE=4096; 1QXv}36#3n  
private static int THRESHOLD=10; [_ESR/&N  
/* (non-Javadoc) & D4'hL3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *KSQ^.sYh  
*/ A?'Tigi  
public void sort(int[] data) { bCHA!zO  
int[] stack=new int[MAX_STACK_SIZE]; <m"Zk k  
VqLqj$P  
int top=-1; 0m_c43+^  
int pivot; W #E-vi+l  
int pivotIndex,l,r; HkFoyy  
+s.r!?49+  
stack[++top]=0; P#bZtWx'<N  
stack[++top]=data.length-1; r`}')2  
%JmSCjt`G  
while(top>0){ ;muxIr`?  
int j=stack[top--]; Dsc{- <v  
int i=stack[top--]; N=lFf+  
E\&~S+:Xp  
pivotIndex=(i+j)/2; }$r/#F/Fn  
pivot=data[pivotIndex]; h^ea V,x>=  
ZAVjq;bq  
SortUtil.swap(data,pivotIndex,j); ]Ec\!,54u  
`Xvrf  
file://partition vK z/-9im  
l=i-1;  chW 1UE  
r=j; deO/`  
do{ H'Q4IRT  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); -v#0.3zm  
SortUtil.swap(data,l,r); hDI_qZ  
} oF[l<OY4  
while(l SortUtil.swap(data,l,r); S*<+vIo  
SortUtil.swap(data,l,j); +]P? ?`,R;  
X-O/&WRYQ  
if((l-i)>THRESHOLD){ 86$9)UI  
stack[++top]=i; oHH-joYnn  
stack[++top]=l-1; uuW._$.A>  
} E4~k)4R  
if((j-l)>THRESHOLD){ :G\f(2@  
stack[++top]=l+1; "pGSz%i-  
stack[++top]=j; cX u"-/  
} V uZd  
J P'|v"  
} Xi`K`Cu+  
file://new InsertSort().sort(data); ib8@U}Vn1  
insertSort(data);  K9 h{sC  
} A]^RV{P  
/** x TEDC,B  
* @param data BMMWP   
*/ ]p C/6'  
private void insertSort(int[] data) { p\T.l <p  
int temp; 2;N)>[3*J  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7kJ =C  
} Q^=drNV  
} seO7/h_a  
} x%HX0= (  
#)hc^gIO&<  
} _s{on/u  
*m$P17/C  
归并排序: CYD&#+o  
;s m )f  
package org.rut.util.algorithm.support; Kppi N+||  
U'8+YAgc  
import org.rut.util.algorithm.SortUtil; uEqL Dg  
;#a^M*e  
/** z&x ^ Dl  
* @author treeroot wJ 0KI[p(S  
* @since 2006-2-2 O~Eju  
* @version 1.0 I29aja  
*/ k$j4~C'$  
public class MergeSort implements SortUtil.Sort{ ~wtl\-cY  
Qf0]7  
/* (non-Javadoc) oNW5/W2e;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K)!yOa'fH  
*/ 7mG/f  
public void sort(int[] data) {  {*!L[)  
int[] temp=new int[data.length]; WBcnE( zF  
mergeSort(data,temp,0,data.length-1); c;X8: Z=ja  
} &z'N Q !uV  
3QNu7oo  
private void mergeSort(int[] data,int[] temp,int l,int r){ |]s/NNU  
int mid=(l+r)/2; ,|:TML  
if(l==r) return ; 0^?:Zds  
mergeSort(data,temp,l,mid); K ?R* )_  
mergeSort(data,temp,mid+1,r); t]dtBt].:  
for(int i=l;i<=r;i++){ OQl7#`G!H%  
temp=data; b8Bf,&:ys  
} ^t X}5i`P  
int i1=l; [diUO1p  
int i2=mid+1; ST'eJ5P7!5  
for(int cur=l;cur<=r;cur++){ LmCr[9/  
if(i1==mid+1) K+2sq+ 3q  
data[cur]=temp[i2++]; J3 Y-d7=|  
else if(i2>r) SQ$|s%)oB  
data[cur]=temp[i1++]; t(d$v_*y51  
else if(temp[i1] data[cur]=temp[i1++]; +OEheG8  
else e u{  
data[cur]=temp[i2++]; F?h{IH f  
} H rMH  
} _SVIY@K|/  
qe M`z  
} :9nqQJ+~  
#RfNk;kaA  
改进后的归并排序: NOzAk%s3I  
& B CA  
package org.rut.util.algorithm.support; cD&QN9  
OD;-0Bj  
import org.rut.util.algorithm.SortUtil; )uG7 DR  
|<:Owd=  
/** S5%I+G3  
* @author treeroot G0e]PMeFl  
* @since 2006-2-2 KM'*+.I  
* @version 1.0 7IEG%FY T  
*/ nu=yE$BN{  
public class ImprovedMergeSort implements SortUtil.Sort { moop.}O<  
NA=I7I@  
private static final int THRESHOLD = 10; "#ctT-g`6  
F=T};b  
/* !L|}/u3v  
* (non-Javadoc) 7dg2-4  
* B\<;e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JI)@h 4b  
*/ 6jDHA3  
public void sort(int[] data) { xAZ-_}'tW  
int[] temp=new int[data.length]; T(@J]Y-  
mergeSort(data,temp,0,data.length-1); \vKK q/f  
} aAT!$0H  
qD] &&"B  
private void mergeSort(int[] data, int[] temp, int l, int r) { ?FV>[&-h#I  
int i, j, k; _NwB7@ e  
int mid = (l + r) / 2; b235Zm  
if (l == r) d?9b6k?  
return; 8.Z9 i  
if ((mid - l) >= THRESHOLD) {S$]I)tV  
mergeSort(data, temp, l, mid); Z)Zc9SVC  
else ` !um )4  
insertSort(data, l, mid - l + 1); N4L#$\M  
if ((r - mid) > THRESHOLD) =sIkA)"!=  
mergeSort(data, temp, mid + 1, r); .%x1%TN  
else lx)Bj6  
insertSort(data, mid + 1, r - mid); >Q-"-X1  
ge[hAI2I  
for (i = l; i <= mid; i++) { uXm_ pQpF  
temp = data; U3-cH  
} }w|a^=HAp  
for (j = 1; j <= r - mid; j++) { flXDGoW  
temp[r - j + 1] = data[j + mid]; ';vL j1v  
} 0W6j F5T  
int a = temp[l]; .7`c(9<  
int b = temp[r]; qhQeQ  
for (i = l, j = r, k = l; k <= r; k++) { lx H3a :gm  
if (a < b) { ^sP-6 ^  
data[k] = temp[i++]; k^i\<@v  
a = temp; {gkY:$xnrG  
} else { yh'P17N|q  
data[k] = temp[j--]; LJ{P93aq`^  
b = temp[j]; jqJ't)N  
} vIQu"J&fE  
} U=vh_NHj  
} voitdz  
aS3Fvk0R{h  
/** !\hUjM+(}  
* @param data Yp@i{$IUW  
* @param l VX+:C(m~  
* @param i Q|] 9  
*/ C?h}n4\B^?  
private void insertSort(int[] data, int start, int len) { 4COo~d  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); _9 B ^@~  
} 2t3DQ  
} |qq7vx  
} i9=*ls^Cx  
} NN"!kuM  
s+@`Z*B5  
堆排序: rsPo~nA  
^)i1b:4  
package org.rut.util.algorithm.support; k%TjRf{p  
x:0nK,  
import org.rut.util.algorithm.SortUtil; "b `R_gG9  
ELgq#z  
/** |<Rf^"T  
* @author treeroot ;UPI%DnE]  
* @since 2006-2-2 )W0z  
* @version 1.0 cP,bob]  
*/ NA-)7i*>J  
public class HeapSort implements SortUtil.Sort{ %]\IC(q  
;Svs|]d  
/* (non-Javadoc)  }0f"SWO>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cj3C%W  
*/ F\BD7W  
public void sort(int[] data) { d>k"#|  
MaxHeap h=new MaxHeap(); t{g7 :A  
h.init(data);  WgayH  
for(int i=0;i h.remove(); 1 2y+g5b  
System.arraycopy(h.queue,1,data,0,data.length); tv\_& ({  
} oJln"-M1nx  
pe@j`Sm:Ej  
private static class MaxHeap{ 5fuB((fd(  
ITr@;@}c]  
void init(int[] data){ rhQv,F9  
this.queue=new int[data.length+1]; w^N3Ma  
for(int i=0;i queue[++size]=data; ;Q8LA",5d  
fixUp(size); E(/M?>t-  
} x17K8De  
} nAY'1!Oi  
us$=)m~v+  
private int size=0; l6z}D; 4  
")i>-1_H  
private int[] queue; F?*ko,  
~Jlo>  
public int get() { j _p|>f<}  
return queue[1]; 9S! 2r  
} V0/O T~gS8  
Lcow2 SbH  
public void remove() { >xK!J?!K  
SortUtil.swap(queue,1,size--); s$PPJJT{b  
fixDown(1); Yj#4{2A  
} 2/4,iu(T`c  
file://fixdown "79"SSfOc  
private void fixDown(int k) { ^!yJ;'H\  
int j; 8-uRn38  
while ((j = k << 1) <= size) { wD|I^y;  
if (j < size %26amp;%26amp; queue[j] j++; d^W1;0  
if (queue[k]>queue[j]) file://不用交换 ml\2%07  
break; VyWPg7}e  
SortUtil.swap(queue,j,k); @teNT"  
k = j; gK+/wTQ%  
} D5gDVulsh  
} '3eL^Aq  
private void fixUp(int k) { 2Pz)vnV"  
while (k > 1) {  *CS2ndp  
int j = k >> 1; jGaI6G'N  
if (queue[j]>queue[k]) X\ bXat+  
break; NpN-''B\  
SortUtil.swap(queue,j,k); KE*8Y4#9  
k = j; 6&KvT2?tA`  
} 5ON\Ve_H  
} sBV})8]K M  
SdM@7%UK  
} C<u<:4^H  
[zMnlO  
} 9fQFsI  
}VI}O{  
SortUtil: KCc7u8   
[t}\8^y  
package org.rut.util.algorithm; \I[50eh|  
e_Un:r@)  
import org.rut.util.algorithm.support.BubbleSort; 8\])p sb9  
import org.rut.util.algorithm.support.HeapSort; :,[=g$CT:  
import org.rut.util.algorithm.support.ImprovedMergeSort; TOC2[m c'  
import org.rut.util.algorithm.support.ImprovedQuickSort; 5kbbeO|0G  
import org.rut.util.algorithm.support.InsertSort; `+?g96   
import org.rut.util.algorithm.support.MergeSort; Htn''adg5  
import org.rut.util.algorithm.support.QuickSort; fq,LXQ#G  
import org.rut.util.algorithm.support.SelectionSort; bWEti}kW  
import org.rut.util.algorithm.support.ShellSort; r< ~pSj  
-H-:b7  
/** [ :*Jn}  
* @author treeroot Ap)[;_9BD  
* @since 2006-2-2 R m^$Dn  
* @version 1.0 qOM"?av  
*/ H68~5lJY^]  
public class SortUtil { <)am]+Lswy  
public final static int INSERT = 1; W3aFao>!OZ  
public final static int BUBBLE = 2; BK;Gh0mp  
public final static int SELECTION = 3; HJ^SqSm  
public final static int SHELL = 4; TcEvUZJ"  
public final static int QUICK = 5; !${7)=|=1  
public final static int IMPROVED_QUICK = 6; XMpa87\  
public final static int MERGE = 7; OJ!=xTU%h  
public final static int IMPROVED_MERGE = 8; ^]{m*bEkR  
public final static int HEAP = 9; BWG*UjP M  
.,+TpP kc  
public static void sort(int[] data) { [3|&!:4g6  
sort(data, IMPROVED_QUICK); P~d&PhOe  
} 8urX]#  
private static String[] name={ J,SP1-L  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" aTLu7C\-e  
}; SR8)4:aKW  
Svqj@@_f  
private static Sort[] impl=new Sort[]{ Ql8s7%  
new InsertSort(), nkTpUbS'f?  
new BubbleSort(), 734f &2  
new SelectionSort(), ~OSgpM#O!T  
new ShellSort(),  oo4aw1d  
new QuickSort(), %<]4]h  
new ImprovedQuickSort(), qSA]61U&  
new MergeSort(), Z`]r)z%f  
new ImprovedMergeSort(), E>I\m!ue  
new HeapSort() 1LZ[i89&%  
}; ='G-wX&k  
s{9 G//  
public static String toString(int algorithm){ K{ED mC  
return name[algorithm-1]; dn1Fwy.  
} ;Y9-0W  
L'L[Vpx  
public static void sort(int[] data, int algorithm) { uEui{_2$  
impl[algorithm-1].sort(data); {3`cSm6c  
} q/#p ol  
j@u]( nf  
public static interface Sort { NpLZ ,|H  
public void sort(int[] data); !*e1F9k  
} cXod43  
W7#dc89}  
public static void swap(int[] data, int i, int j) { lW|`8ykp  
int temp = data; c:I %jm  
data = data[j]; g^: & Dh  
data[j] = temp; of=N+ W  
} \k 6'[ln  
} b[KZJLZ)  
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