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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。 ypWhH  
插入排序: JnPwqIF1  
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package org.rut.util.algorithm.support; A7R [~  
PYyT#AcW2  
import org.rut.util.algorithm.SortUtil; AHet,N  
/** -=GmI1:=$4  
* @author treeroot u9j1>QU  
* @since 2006-2-2 h3j`X'  
* @version 1.0 GP0}I@>?  
*/ $_O;yz  
public class InsertSort implements SortUtil.Sort{ qlC4&82=Q  
.o)  
/* (non-Javadoc) S z-TarTF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @me ( pnD  
*/ Zp+orc7  
public void sort(int[] data) { F7\nG}#s  
int temp; }BAe   
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); C 4K"eX,K  
} V-ONC  
} ;^ff35EE8  
} s&M#]8x;x  
r#(*x 2~,  
} 4[rX\?^e  
Lklb  
冒泡排序: ,U.|+i{  
<~  ?LU^  
package org.rut.util.algorithm.support; x.>&|Ej  
^%NjdZuDO  
import org.rut.util.algorithm.SortUtil; [<.dOe7|  
8gJg7RxL  
/** z-m:l;  
* @author treeroot <;hy-Q()D  
* @since 2006-2-2 }*c[} VLN  
* @version 1.0 ne# %Gr  
*/ +HEL^  
public class BubbleSort implements SortUtil.Sort{ ,'byJlw_pv  
zcOG[-  
/* (non-Javadoc) ntn ~=oL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nG7E j#1  
*/ <x1,4a~  
public void sort(int[] data) { #YK=e&da  
int temp; Rts.jm>[  
for(int i=0;i for(int j=data.length-1;j>i;j--){ p~z\&&0U0  
if(data[j] SortUtil.swap(data,j,j-1); GRAPv|u9[  
} -# /'^O +%  
} :oytJhxU  
} =xr2-K)e  
} m6o o-muAr  
;-VXp80J  
} xG|lmYt76  
gW^0A)5  
选择排序: OySn[4`(i  
h y"=)n(  
package org.rut.util.algorithm.support; OQ+kOE&  
lh-zE5;  
import org.rut.util.algorithm.SortUtil; nQ;M@k&9eV  
G&@_,y|  
/** R:U!HE8j   
* @author treeroot U /jCM?~  
* @since 2006-2-2 6t'vzcQs  
* @version 1.0 R]NCD*~  
*/ &"=<w  
public class SelectionSort implements SortUtil.Sort { &?^"m\K4J*  
M<ba+Qn$  
/* 9G)fJr  
* (non-Javadoc) .=@CF8ArG  
* &Y-jK<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *a'I  
*/ G!U `8R  
public void sort(int[] data) { M<xF4L3]  
int temp; L DdgI  
for (int i = 0; i < data.length; i++) { ?zK\!r{  
int lowIndex = i; Z@bKYfGM  
for (int j = data.length - 1; j > i; j--) { `86})xz{  
if (data[j] < data[lowIndex]) { wj\kx\+  
lowIndex = j; \;0UP+  
} }T"&4Rvs2R  
} 2[1lwV  
SortUtil.swap(data,i,lowIndex); 35Fs/Gf-n  
} >+Y@rj2  
} RC^k#+  
yK w.69.  
} vgN%vw pL  
\1oN't.  
Shell排序: O[ug7\cl+  
mBDzc(_\$'  
package org.rut.util.algorithm.support; s$xm  
Ex5 LhRe>=  
import org.rut.util.algorithm.SortUtil; CzI/Z+\  
sK7b4gmK  
/** ,R=)^Gh{  
* @author treeroot >Dq&[9,8  
* @since 2006-2-2 JxQGL{) >  
* @version 1.0 gZ6tb p,X  
*/ zRgl`zREr  
public class ShellSort implements SortUtil.Sort{ Z(BZG O<  
aA-s{af  
/* (non-Javadoc) LuWY}ste  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t{O2JF#5u  
*/ J"Nn.iVq  
public void sort(int[] data) { {$'oKJy*  
for(int i=data.length/2;i>2;i/=2){  5 c1{[  
for(int j=0;j insertSort(data,j,i); \8]("l}ms8  
} trlZ  
} Cg]S`R-  
insertSort(data,0,1); v(^;%  
} &W N R{  
iM~qSRb#mJ  
/** #yOn /  
* @param data f&? 8fB8{  
* @param j Gy!bPVe  
* @param i h/7_IuD  
*/ .|GnTC q  
private void insertSort(int[] data, int start, int inc) { uk)D2.eS,  
int temp; a t%qowt  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); }kMKA.O"  
} 0f"la=6  
} >(a[b@[K  
} 1Wz5Iv#Ez  
9KMtPBZ  
} dwVo"_Yr  
<Gz*2i  
快速排序: +{cCKRm  
V(OD^GU  
package org.rut.util.algorithm.support; s;xErH@RA  
G9h Bp  
import org.rut.util.algorithm.SortUtil; RT"JAJTi/  
$#FA/+<&$  
/** Cd7l+~*Y  
* @author treeroot 1_z~<d @?;  
* @since 2006-2-2 aV G4D f  
* @version 1.0 teJY*)d  
*/ PB!*&T'!  
public class QuickSort implements SortUtil.Sort{ Hf9F:yH  
zJG=9C?  
/* (non-Javadoc) 5>&C.+A 9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^']*UD;  
*/ td|O#R  
public void sort(int[] data) { XO}v8nWV  
quickSort(data,0,data.length-1); w s7LDY&(  
} w>&g'  
private void quickSort(int[] data,int i,int j){ d*Kg_He-  
int pivotIndex=(i+j)/2; =p&uQ6.i+  
file://swap IvM>z03  
SortUtil.swap(data,pivotIndex,j); !Z%pdqo`.  
47^7S=  
int k=partition(data,i-1,j,data[j]); >{=~''d,w  
SortUtil.swap(data,k,j); P;ovPyoO  
if((k-i)>1) quickSort(data,i,k-1); DaqpveKa  
if((j-k)>1) quickSort(data,k+1,j); F,JqHa9  
89J7hnJC  
}  o*xft6U  
/** -\M;bQV[C  
* @param data idNg&'   
* @param i Ui }%T]  
* @param j YBQ{/"v%|  
* @return ?$%2\"wX~7  
*/ ~s>Ud<l%r  
private int partition(int[] data, int l, int r,int pivot) { _+. )8   
do{ AmBLZ<f;  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); "K#zY~>L  
SortUtil.swap(data,l,r); =VF%Z[Gm  
} \(ju0qFqH  
while(l SortUtil.swap(data,l,r); 9^^:Y3j  
return l; Il$Jj-)  
} 8Oo16LPD  
^q/_D%]C  
} N6!$V7oT  
}RZN3U=  
改进后的快速排序: "SU O2-Gj  
W_h!Puj_  
package org.rut.util.algorithm.support; VHx:3G  
L*1yK*  
import org.rut.util.algorithm.SortUtil; </|m^$v  
L+NrU+:=C  
/** ]gDX~]f[  
* @author treeroot O8 5)^  
* @since 2006-2-2 Y$ '6p."=  
* @version 1.0 o7v,:e:  
*/ 9oxn-)6JC  
public class ImprovedQuickSort implements SortUtil.Sort { qp2&Z8S\D  
Vnnl~|Xx  
private static int MAX_STACK_SIZE=4096; O 718s\#  
private static int THRESHOLD=10; w>6 cc#>q  
/* (non-Javadoc) q 1+{MPJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4_h?E:sBb  
*/ KNqs=:i  
public void sort(int[] data) { 5VGr<i&A  
int[] stack=new int[MAX_STACK_SIZE]; `_>44!M  
^"EK:|Y4%K  
int top=-1; yn.f?[G2  
int pivot; 7/6%92T/B  
int pivotIndex,l,r; 'SnB7Y  
p=] z`t  
stack[++top]=0; swG!O}29OX  
stack[++top]=data.length-1; 2q%vd =T  
MLt'tzgl  
while(top>0){ dR >hb*k J  
int j=stack[top--]; yIma7H@=L  
int i=stack[top--]; S3> <zGYk  
$;B0x  
pivotIndex=(i+j)/2; !s(s^  
pivot=data[pivotIndex]; \Culf'iX  
,2lH*=m;  
SortUtil.swap(data,pivotIndex,j); {[[/*1r|  
9u] "($  
file://partition Oq*=oz^~1  
l=i-1; )cYbE1=u8>  
r=j; 2G)q?_Q4S  
do{ 3}2a3)  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); %q_b\K  
SortUtil.swap(data,l,r); qp55U*  
} (sx,Ol  
while(l SortUtil.swap(data,l,r);  El |Y]f  
SortUtil.swap(data,l,j); 4>t=r\"4  
HHg[6aw  
if((l-i)>THRESHOLD){ ?7R&=B1g  
stack[++top]=i; eT Z2f  
stack[++top]=l-1; jT1^oXn@  
} BHJS.o*j~  
if((j-l)>THRESHOLD){ e\' =#Hw  
stack[++top]=l+1; ,w0Io   
stack[++top]=j; lW3wmSWn%  
} d@>1m:p  
peGh-  
} ;@V1*7y  
file://new InsertSort().sort(data); d^^EfWU  
insertSort(data); v}BXH4&Y  
} &KVXU0F^z  
/** L~ e{Vv8UR  
* @param data ]$i~;f 8I  
*/ =Bb/Y`Q  
private void insertSort(int[] data) { L3y`*&e>  
int temp; XcM.<Dn3  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); C^nTLw;K  
} ($[)Tcq*~  
} s.XLC43Rs  
} |oV_7%mlu  
9O\N K:2  
} )9z3T>QW  
29r(Y  
归并排序: =JfSg'7  
Vl%jpjqP  
package org.rut.util.algorithm.support; (v1~p3H  
oO][X  
import org.rut.util.algorithm.SortUtil; 4 -Cca  
x`VA3nE9  
/** IHvrx:7  
* @author treeroot CyD)=e {  
* @since 2006-2-2 5nv1%48Ri  
* @version 1.0 fm&pxQjg  
*/ 6;#Rd|  
public class MergeSort implements SortUtil.Sort{ ]c\d][R N  
% n~ 'UA  
/* (non-Javadoc) )_\q)t"=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vDcYz,  
*/ (?lKedA>2  
public void sort(int[] data) { zb& 3{,  
int[] temp=new int[data.length]; |7%#z~rT  
mergeSort(data,temp,0,data.length-1); <-F[q'!C1  
} ^>m"j6`h,  
QV9 z81[  
private void mergeSort(int[] data,int[] temp,int l,int r){ jRNDi_u?Wb  
int mid=(l+r)/2; eGQ -Ht,N  
if(l==r) return ; B:=VMX~GE  
mergeSort(data,temp,l,mid); Ff{dOV.i  
mergeSort(data,temp,mid+1,r); _"G./X  
for(int i=l;i<=r;i++){ U['|t<^uf  
temp=data; hLF;MH@  
} B):hm  
int i1=l; {`=k$1  
int i2=mid+1; D) ;w)`  
for(int cur=l;cur<=r;cur++){ J3,m{%EtNM  
if(i1==mid+1) ]Ofs, U^  
data[cur]=temp[i2++]; Pj{Y  
else if(i2>r) 22FHD4  
data[cur]=temp[i1++]; /L*JHNu"_  
else if(temp[i1] data[cur]=temp[i1++]; .l +yK-BZ  
else BSHtoD@e7  
data[cur]=temp[i2++]; [LDY;k~5+  
} vnD `+y  
} sG8G}f  
pT'jX^BU  
} 6"<q{K  
^F:Bj&0v[  
改进后的归并排序: k`h#.B J  
^!sIEL  
package org.rut.util.algorithm.support; .vWwYG  
YK%rTbB(  
import org.rut.util.algorithm.SortUtil; ,#Mt10e{  
`e^sQ>rDI  
/** WWG+0jQ9  
* @author treeroot dBEm7.nh  
* @since 2006-2-2 !?5YXI,  
* @version 1.0 M}x]\#MMY  
*/ @"__2\ 0  
public class ImprovedMergeSort implements SortUtil.Sort { R(on[g_1  
,f^ ICM  
private static final int THRESHOLD = 10; rWNywxnT  
osZ] R  
/* 5`p>BJ+n  
* (non-Javadoc) f_'8l2jK1i  
* <#~n5W{l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *^[j6  
*/ V?&P).5)  
public void sort(int[] data) { g[$4a4X  
int[] temp=new int[data.length]; G- eSHv  
mergeSort(data,temp,0,data.length-1); ndS8p]P&o(  
} /M Z^;XG  
Q?/qQ}nNw  
private void mergeSort(int[] data, int[] temp, int l, int r) { jj6yf.r6c  
int i, j, k; ch]{ =61  
int mid = (l + r) / 2; jH?!\F2)+  
if (l == r) ED^0t  
return; aDda&RM  
if ((mid - l) >= THRESHOLD) uS7kkzt-x  
mergeSort(data, temp, l, mid); _(F8}s  
else ubUVxYD?  
insertSort(data, l, mid - l + 1); ]8CgHT[^7  
if ((r - mid) > THRESHOLD) qrufnu5cC  
mergeSort(data, temp, mid + 1, r); HMmB90P`  
else iB#*XJ;q  
insertSort(data, mid + 1, r - mid); cV:Ak~PKl  
|&U{ z?  
for (i = l; i <= mid; i++) { 2B"&WKk  
temp = data; frT<9$QUL  
} }No8to  
for (j = 1; j <= r - mid; j++) { T( fcE  
temp[r - j + 1] = data[j + mid]; ~|( eh9  
} FwUgMR*xq  
int a = temp[l]; `T3B  
int b = temp[r]; #*X\pjZ  
for (i = l, j = r, k = l; k <= r; k++) { Eo>EK>  
if (a < b) { v-DZW,  
data[k] = temp[i++]; Fs&r ^ [/b  
a = temp; t^~Qv  
} else { XeX` h_  
data[k] = temp[j--]; bXk(wXX  
b = temp[j]; o>\o=%D.a  
} pD;fFLvN  
} :f~qt%%/  
} }/2M?W0  
(9Q@I8}Iy  
/** %"^8$A?>,k  
* @param data e%C_>  
* @param l $[\\{XJ.  
* @param i nXw98;  
*/ ||4T*B06  
private void insertSort(int[] data, int start, int len) { '^M.;Giz  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); g cb6*@u!  
} qKTzigjj  
} F}?4h Dt  
} n j2=}6  
} -ARks_\  
i!)\m0Wm  
堆排序: oI-,6G}  
**JBZ\'  
package org.rut.util.algorithm.support; sO{TGk]*  
f$ 7C 5  
import org.rut.util.algorithm.SortUtil; qHn X)  
<iB5&  
/** ?[7KN8$  
* @author treeroot 1>Q4&1Vn  
* @since 2006-2-2 Ll .P>LH  
* @version 1.0 J";4+wA7  
*/ < n/ 2  
public class HeapSort implements SortUtil.Sort{ }$i/4?dYsQ  
9}5o> iR  
/* (non-Javadoc) VS>xvF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) glLoYRTi  
*/ %77uc9}  
public void sort(int[] data) { p>B-Ubu  
MaxHeap h=new MaxHeap(); <Xw\:5 F<7  
h.init(data); ,Oe:SZJ>  
for(int i=0;i h.remove(); :kFPPx?  
System.arraycopy(h.queue,1,data,0,data.length); R3%%;`c=  
} qA"BoSw4  
51Vqbtj^  
private static class MaxHeap{ -iKoQkHt  
p6!5}dD(  
void init(int[] data){ ~d\^ynQ  
this.queue=new int[data.length+1]; t YxN^VqU  
for(int i=0;i queue[++size]=data; O_]hbXV0  
fixUp(size); Ec@cW6g(%  
} &gKDw!al  
} qw1W }+~g  
#k?.dWZ!  
private int size=0; \&b 9  
`QtkC>[  
private int[] queue; +P8CC fPu  
)ZI#F]  
public int get() { Em !%3C1r  
return queue[1]; ]|tR8`DGZ%  
} `][vaLd`Q  
$JUkw sc  
public void remove() { .+kg1=s  
SortUtil.swap(queue,1,size--); S`$%C=a.  
fixDown(1); x-]:g&5T  
} t+_\^Oa)  
file://fixdown <ZheWl  
private void fixDown(int k) { hz*T"HJ]t  
int j; lv9Tq5C  
while ((j = k << 1) <= size) { JOJuGB-d  
if (j < size %26amp;%26amp; queue[j] j++; fp*6Dv_  
if (queue[k]>queue[j]) file://不用交换 [$;cjys  
break; v>j,8E  
SortUtil.swap(queue,j,k); Va?i#<a  
k = j; ZZ  Hjv  
} +3J<vM}dy  
} }0tHzw=#%e  
private void fixUp(int k) { 4.^T~n G  
while (k > 1) { #:By/9}-  
int j = k >> 1; xy b=7  
if (queue[j]>queue[k]) mPHto-=fB  
break; c@Br_ -  
SortUtil.swap(queue,j,k); .$7RF!p  
k = j; ]YtN6Rq/  
} ]tf`[bINP  
} OGIv".~s4  
x;<0Gg~jB  
} NyT%S?@y<  
@HPr;m!  
} OTE,OCB[  
:P/VBXh  
SortUtil: :9av]Yv&  
cc3B}^@p=  
package org.rut.util.algorithm; ^2);*X>  
GcDA0%i  
import org.rut.util.algorithm.support.BubbleSort; L9N }lH  
import org.rut.util.algorithm.support.HeapSort; n}_}#(a  
import org.rut.util.algorithm.support.ImprovedMergeSort; 2Z%n "z68  
import org.rut.util.algorithm.support.ImprovedQuickSort; -gm5E qi  
import org.rut.util.algorithm.support.InsertSort; -fXQ62:S  
import org.rut.util.algorithm.support.MergeSort; 9!(%Vf>  
import org.rut.util.algorithm.support.QuickSort; }dpTR9j=  
import org.rut.util.algorithm.support.SelectionSort; !y B4;f$  
import org.rut.util.algorithm.support.ShellSort; Li]96+C$}  
(' 7$K  
/** df$.gP  
* @author treeroot w%s];EE  
* @since 2006-2-2 :L@n(bu RN  
* @version 1.0 s .<.6t:G4  
*/ \8=)X})  
public class SortUtil { R~T}  
public final static int INSERT = 1; _dRB=bl"O  
public final static int BUBBLE = 2; VnVBA-#r|  
public final static int SELECTION = 3; ^3BPOK[*gB  
public final static int SHELL = 4; i%[gNh  
public final static int QUICK = 5; %~x?C4L8  
public final static int IMPROVED_QUICK = 6; /'aqQ K<  
public final static int MERGE = 7; (Hj[9[=  
public final static int IMPROVED_MERGE = 8; ;Mo_B9  
public final static int HEAP = 9; p]EugLEmG  
]"b:IWPeI  
public static void sort(int[] data) { ?tL'  X  
sort(data, IMPROVED_QUICK); "3\y~<8%'  
} "gJ.mhHX  
private static String[] name={ NIVR;gm  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ~abyjM  
}; X!K>.r_Dg  
`(h^z>%  
private static Sort[] impl=new Sort[]{ nAWb9Yk  
new InsertSort(), n0T|U  
new BubbleSort(), S4`X^a}pY  
new SelectionSort(), ` PQQU~^  
new ShellSort(), SMD*9&,  
new QuickSort(), 5{k,/Z[L  
new ImprovedQuickSort(), 'E9{qPLk(  
new MergeSort(), h{iuk3G`h6  
new ImprovedMergeSort(), P O 5Wi  
new HeapSort() a`n)aXU l  
}; OcO/wA(&{  
`DF49YP"~  
public static String toString(int algorithm){ /0H}-i  
return name[algorithm-1]; Gmi? xGn  
} J)Y`G4l2@  
e)n ,Y  
public static void sort(int[] data, int algorithm) { y ;Cs#eo  
impl[algorithm-1].sort(data); F`m}RL]g  
} babL.Ua8o  
:\P@c(c{^C  
public static interface Sort { 8 E\zjT!#\  
public void sort(int[] data); qvSYrnpn  
} :Q>e54]'&  
p$9Aadi]  
public static void swap(int[] data, int i, int j) { / Qd` ?  
int temp = data; U,#x\[3!Jt  
data = data[j]; lQ`=PFh  
data[j] = temp; :>{!%-1Z  
} H^*AaA9-   
} A6]X aF  
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