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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。 YK)m6zW5  
插入排序: >^~^#MT  
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package org.rut.util.algorithm.support; w2.] 3QAZ  
.qSDe+A  
import org.rut.util.algorithm.SortUtil; M !'d  
/** u:f ]|Q  
* @author treeroot ^AH[]sE_  
* @since 2006-2-2 )]j3-#  
* @version 1.0 (DO'iCxlNh  
*/ UsyNn39  
public class InsertSort implements SortUtil.Sort{ Ob/)f)!!  
q13fmK(n-5  
/* (non-Javadoc) -*' ?D@l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %`C*8fc&  
*/ BQ0?B*yqd  
public void sort(int[] data) { >8_y-74  
int temp; Cw+boB_tip  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?YW~7zG  
} 3W7^,ir  
} QMBT8x/+_'  
} bFX{|&tHU  
KAClV%jP  
} M YF ^zheD  
/eQAGFG  
冒泡排序: p75o1RU  
S/XU4i:aV  
package org.rut.util.algorithm.support; aDdGhB  
\Ip)Lm0  
import org.rut.util.algorithm.SortUtil; ;stuTj@vH  
Ab ,^y  
/** nZbI}kcm  
* @author treeroot oIE 1j?  
* @since 2006-2-2 :EV.nD7  
* @version 1.0 $XhMI;h  
*/ BuV71/Vb{Q  
public class BubbleSort implements SortUtil.Sort{ P`lv_oV  
$(9QnH1KY  
/* (non-Javadoc) 3:x(2 A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A0Mjk  
*/ t Ly:F*1i  
public void sort(int[] data) { ,,{;G'R|  
int temp; ~A=zjkm  
for(int i=0;i for(int j=data.length-1;j>i;j--){ W<)P@_+-  
if(data[j] SortUtil.swap(data,j,j-1); 2|>\A.I|=  
} 9~Dg<wQ  
} z ?\it(  
} m=01V5_  
} lAU99(GXV  
.rtA sbp.!  
} #-;c!<2  
BTkx}KK  
选择排序: (  zo7h  
i=EOk}R  
package org.rut.util.algorithm.support; _Q5mPBO  
1(o\GI3:  
import org.rut.util.algorithm.SortUtil; LDjtkD.r  
",b:rgpRp  
/** Dx-P]j)4x  
* @author treeroot x]c8?H9,&  
* @since 2006-2-2 g,+ e3f  
* @version 1.0 X`D2w:  
*/ h-P|O6@Ki  
public class SelectionSort implements SortUtil.Sort { V\Cl""`XN  
KyyR Hf5  
/* Y*c]C;%=  
* (non-Javadoc) 2 l)"I  
* $.jG O!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X+;[Gc}(W  
*/ jA{5)-g  
public void sort(int[] data) { dQj/ Sr  
int temp; i5}Zk r  
for (int i = 0; i < data.length; i++) { %4*c/ c6  
int lowIndex = i; #3rS{4[  
for (int j = data.length - 1; j > i; j--) { V9oBSP'kt  
if (data[j] < data[lowIndex]) { GY]P(NU  
lowIndex = j; RM|J |R  
} tY)L^.*7  
} kZw"a*6  
SortUtil.swap(data,i,lowIndex); C^ )Imr  
} gs'M^|e)  
} -%` ~3*L  
jaoZ}}V_$  
} << >+z5D+  
/w?e(v<  
Shell排序: KOy{?  
lMY\8eobcB  
package org.rut.util.algorithm.support; '3>;8(s l  
XKjrS 9:  
import org.rut.util.algorithm.SortUtil; Ljy797{f  
K{P-+(  
/** ,clbD4  
* @author treeroot LIID(s!bX  
* @since 2006-2-2  ~71U s  
* @version 1.0 ; JkSZs3  
*/ Ce}`z L  
public class ShellSort implements SortUtil.Sort{ 8 Rj5~+5  
^@^8iZ  
/* (non-Javadoc) [bh?p+V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 40kAGs>_  
*/ i6if\B  
public void sort(int[] data) { G)7U &B  
for(int i=data.length/2;i>2;i/=2){ 60+zoL'  
for(int j=0;j insertSort(data,j,i); 6^b)Q(Edut  
} 64/ZfXD  
} *O_fw 0jV  
insertSort(data,0,1); \L*%?~  
} _w\9 \<%  
6eSo.@*l  
/** CQWXLQED>  
* @param data DsHF9Mn  
* @param j D]@(LbMG4  
* @param i b9j}QK  
*/ ' ##?PQ*u  
private void insertSort(int[] data, int start, int inc) { A^OwT#  
int temp; c]9gf\WW  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Zy(i_B-b  
} 5T;LWS  
} ahl|N`  
} gnp.!-  
t=P+m   
} qd0G sr}j  
/!H24[tnk1  
快速排序: y[ dB mTY  
Orq/38:4G  
package org.rut.util.algorithm.support; u n v:sV#b  
JQM_96\  
import org.rut.util.algorithm.SortUtil; _BewaI;w  
wo`.sB&T  
/** <,~OcJG(   
* @author treeroot | 1B0  
* @since 2006-2-2 #*.!J zOg  
* @version 1.0 ^OY$ W  
*/ }WsPuo  
public class QuickSort implements SortUtil.Sort{ b-& rMML  
iE'_x$i  
/* (non-Javadoc) I*-\u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8&@=Anc&q  
*/ m^ xTV-#l@  
public void sort(int[] data) { hY4#4A`I  
quickSort(data,0,data.length-1); wC{sP"D  
} TZgtu+&  
private void quickSort(int[] data,int i,int j){ M1Q&)am  
int pivotIndex=(i+j)/2; |P5dv>tb F  
file://swap 45JL{YRN  
SortUtil.swap(data,pivotIndex,j); *Dg@fxCQ  
Wg}KQ6 6  
int k=partition(data,i-1,j,data[j]); 9~UR(Ts}l  
SortUtil.swap(data,k,j); hCQOwk#  
if((k-i)>1) quickSort(data,i,k-1); d8wGXNd7B  
if((j-k)>1) quickSort(data,k+1,j); [E9iuym  
B /;(#{U;  
} v^&HZk=(  
/** tiZ H;t';<  
* @param data =IL\T8y09  
* @param i 1GN^ui a7  
* @param j [Hx}#Kds  
* @return !RKuEg4hQ  
*/ 3/RwCtc  
private int partition(int[] data, int l, int r,int pivot) { gT8(LDJ  
do{ )q<VZ|V  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); WM+8<|)n  
SortUtil.swap(data,l,r); {7e(0QK  
} FS"Ja`>j~  
while(l SortUtil.swap(data,l,r); I=L[ "]  
return l; )?72 +X  
} eCI'<^  
t!\aDkxo %  
} R2)@Q  
C@qWour  
改进后的快速排序: XIIq0I  
?A@y4<8R|  
package org.rut.util.algorithm.support; :j]6vp 6  
,ojJ;w5D  
import org.rut.util.algorithm.SortUtil; I{$suPk  
NCk-[I?R  
/** nYtkTP!J6  
* @author treeroot "r6qFxY  
* @since 2006-2-2 ]>~.U ~  
* @version 1.0 ' #K@%P  
*/ J^"_H:1[  
public class ImprovedQuickSort implements SortUtil.Sort { *9n[ #2sM<  
C@-Hm  
private static int MAX_STACK_SIZE=4096; = o(}=T>:"  
private static int THRESHOLD=10; R,T0!f  
/* (non-Javadoc) 'ON/WKJr|W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) va@;V+cD  
*/ ;W{z"L;nX  
public void sort(int[] data) { R6<'J?k  
int[] stack=new int[MAX_STACK_SIZE]; -)-: rRx-  
T.#_v# oM  
int top=-1; rRevyTs  
int pivot; 'wPX.h?  
int pivotIndex,l,r; ^$oa`B^2JM  
Apu- 9|oP  
stack[++top]=0; nDn+lWA=g  
stack[++top]=data.length-1; gxhp7c182  
'N{1b_v?  
while(top>0){ 6O/L~Z*t  
int j=stack[top--]; ~;(\a@ _  
int i=stack[top--]; tM5(&cQ!d  
z 4}"oQk:r  
pivotIndex=(i+j)/2; *$7^.eHfdd  
pivot=data[pivotIndex]; }6l:'nW  
Xf;!w:u  
SortUtil.swap(data,pivotIndex,j); G:e=9qTf  
N)(m^M(~0  
file://partition p7+{xXf  
l=i-1; 1 k!gR  
r=j; "pt[Nm76)8  
do{ ,q*|R O  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); \WE/#To  
SortUtil.swap(data,l,r); 0faf4LzU!  
} NL.3qx  
while(l SortUtil.swap(data,l,r); ok--Jyhv#  
SortUtil.swap(data,l,j); ]Z[3 \~?  
UL ew ~j  
if((l-i)>THRESHOLD){ U$D:gZ  
stack[++top]=i; *`OXgkQ  
stack[++top]=l-1; R.|h<bur  
} 0084`&Ki  
if((j-l)>THRESHOLD){ di_N}x*  
stack[++top]=l+1; -AnJLFY  
stack[++top]=j; ~%\vX  
} ;R >>,&g  
 e$  
} >%"TrAt  
file://new InsertSort().sort(data); p YCMJK-H  
insertSort(data); CMC p7- v  
} GGHMpQ   
/** |%4nU#GoB  
* @param data 4PSbr$  
*/ TFbc@rfB  
private void insertSort(int[] data) { n}NUe`E_h  
int temp; a\-5tYo`u  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); PM*lnd#J  
} R?:K\  
} h9S f  
} +4t \j<T  
U-?r>K2  
} eI2041z  
P3bRv^  
归并排序: CEk [&39"  
Y+S<?8pA  
package org.rut.util.algorithm.support; \.P'8As  
(O ;R~Io  
import org.rut.util.algorithm.SortUtil; Q]/g=Nn ^~  
tklS=R^Vn  
/** k5&}bj-  
* @author treeroot #5;4O{  
* @since 2006-2-2 SFWS<H(IN  
* @version 1.0 5UL5C:3R9  
*/ `iuQ.I  
public class MergeSort implements SortUtil.Sort{ 3 } $9./+  
#~*v*F~3  
/* (non-Javadoc) =]Y'xzJuu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }`whg8 fZ  
*/ 'o]}vyz;  
public void sort(int[] data) { l7ES*==&@0  
int[] temp=new int[data.length]; cmf*BkS  
mergeSort(data,temp,0,data.length-1); M9V,;*  
} 1b=\l/2  
}8.$)&O$^  
private void mergeSort(int[] data,int[] temp,int l,int r){ L-W*h  
int mid=(l+r)/2;  Z1H  
if(l==r) return ; q+YK NXI  
mergeSort(data,temp,l,mid); <y-2ovw*  
mergeSort(data,temp,mid+1,r); yj,+7[)  
for(int i=l;i<=r;i++){ v]drDVJ   
temp=data; "gpfD-BX  
} N*w{NB7L  
int i1=l; Gd&G*x  
int i2=mid+1; 1g!%ej jd  
for(int cur=l;cur<=r;cur++){ GB >h8yXH  
if(i1==mid+1) c1%ki%J#  
data[cur]=temp[i2++]; <Dnv=)Rq  
else if(i2>r) blV'-Al  
data[cur]=temp[i1++]; d#,   
else if(temp[i1] data[cur]=temp[i1++]; tG,xG&  
else .@(MNq{"6  
data[cur]=temp[i2++]; D//Ts`}+n  
} M>Ws}Y  
} YWhS<}^  
1p>&j%dk  
} >GDN~'}^oz  
LrfyH"#!:  
改进后的归并排序: QZ-6aq\sgp  
)N ^g0 L  
package org.rut.util.algorithm.support; {7Ez7'SVV  
ctC! b{S"@  
import org.rut.util.algorithm.SortUtil; kZ_5R#xK  
cRPy5['E  
/** j|% C?N  
* @author treeroot D2Kh+~l  
* @since 2006-2-2 \U`rF  
* @version 1.0 ZONe}tv:  
*/ VN4H+9E  
public class ImprovedMergeSort implements SortUtil.Sort { +>h'^/rAE  
vw q Y;7  
private static final int THRESHOLD = 10; ET]`  
47/YD y%  
/* `WU"*HqW  
* (non-Javadoc) &_6B{Q  
* z2V_nkI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n;dp%SD  
*/ @6DV?VL  
public void sort(int[] data) { ;@u+b0 j  
int[] temp=new int[data.length]; g60r m1b  
mergeSort(data,temp,0,data.length-1); 2ap0/l[  
} 7+p=4i^@Zs  
5@Lz4 `  
private void mergeSort(int[] data, int[] temp, int l, int r) { +Y^/0=6h  
int i, j, k; 0/%VejZ'  
int mid = (l + r) / 2; ;lb@o,R :  
if (l == r) cbA90 8@s  
return; U@?Ro enn  
if ((mid - l) >= THRESHOLD) D(S^g+rd  
mergeSort(data, temp, l, mid); *$ 7c||J7  
else OGO4~Up  
insertSort(data, l, mid - l + 1); $5l=&  
if ((r - mid) > THRESHOLD) T%:W6fH7  
mergeSort(data, temp, mid + 1, r); <N;HB&mr  
else B1gBvss  
insertSort(data, mid + 1, r - mid); RIl+QA  
A0Hsd  
for (i = l; i <= mid; i++) { C}GOwvAL>  
temp = data; H]W59-{a  
} ('p~h-9Vi  
for (j = 1; j <= r - mid; j++) { ,NaNih1  
temp[r - j + 1] = data[j + mid];  bR5+({yH  
} D7x"P-ie  
int a = temp[l]; HTCn=MZm ?  
int b = temp[r]; t7DT5SrR  
for (i = l, j = r, k = l; k <= r; k++) { V`"A|Y  
if (a < b) { 3+jqf@fO  
data[k] = temp[i++]; 9a9{OJa6M  
a = temp; UYb:q  
} else { y| %rW  
data[k] = temp[j--]; h|1 /Q (  
b = temp[j]; JuT~~Z  
} 7l3sd5  
} n P4DHb&5  
} dAcy;-[[P  
pTJJ.#$CEF  
/** h{cJ S9e}  
* @param data toCT5E_0=  
* @param l * <_8]C0>  
* @param i VS\~t  
*/ qMe$Qr8  
private void insertSort(int[] data, int start, int len) { 9rmOf Jo:  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); It@.U|  
} $/Q*@4t  
} 7.l[tKh  
} g k[8'  
} LN?W~^gsR  
uN1O(s  
堆排序: =7mn= w?  
W]rK*Dc  
package org.rut.util.algorithm.support; G u-#wv5@  
%9A6c(L  
import org.rut.util.algorithm.SortUtil; |^i+Srh  
bEE'50 D  
/** i7w>Nvj]  
* @author treeroot E(oI0*S.5  
* @since 2006-2-2 7x^P74  
* @version 1.0 58Fan*fO  
*/ &pD6Qq{  
public class HeapSort implements SortUtil.Sort{ ]?`t spm<t  
=q( ;g]e  
/* (non-Javadoc) $>;U^-#3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PI#xRKt  
*/ _$?SKid|o  
public void sort(int[] data) { (W| Eg  
MaxHeap h=new MaxHeap(); w#5^A(NR  
h.init(data); S]3t{s#JW7  
for(int i=0;i h.remove(); y#Ao6Od6  
System.arraycopy(h.queue,1,data,0,data.length); L= fz:H  
} 4cni_m]  
bCF"4KXK  
private static class MaxHeap{ [g:ZIl4p\P  
q]Cmaf(  
void init(int[] data){ @<tkwu  
this.queue=new int[data.length+1]; mRw &^7r  
for(int i=0;i queue[++size]=data; a 8Jn.!  
fixUp(size); +tNu8M@xFo  
} >?q()>l  
} kmm1b (  
k!K}<sX2  
private int size=0; shOQ/  
d3# >\QCD9  
private int[] queue; eEIa=MB*  
d3AOuVUf  
public int get() { :Uf\r `a9  
return queue[1]; Q0I22?  
} d([NU;  
AAE8j.  
public void remove() { ?A /+DRQ(  
SortUtil.swap(queue,1,size--); 8M;VX3X  
fixDown(1); G_{x)@  
} 1;R1Fj&  
file://fixdown V6Y:l9  
private void fixDown(int k) { |~Hlv^6H  
int j; w^?uBeqR  
while ((j = k << 1) <= size) { T<"Hh.h  
if (j < size %26amp;%26amp; queue[j] j++; C{<qc,!4  
if (queue[k]>queue[j]) file://不用交换 [ 44d(P'  
break; .AOf-a  
SortUtil.swap(queue,j,k); `g&<7~\=A  
k = j; y_:i'Ri.  
} E4aCL#}D  
} q/[)Z @&(  
private void fixUp(int k) { QXnL(z  
while (k > 1) { 6u`E{$  
int j = k >> 1; , [xDNl[Y|  
if (queue[j]>queue[k]) n0:Y* Op  
break; cTpAU9|(  
SortUtil.swap(queue,j,k); =l TV2C<  
k = j; qr[H0f]  
} xJ)hGPrAl  
} y|1,h}H^n  
(-tF=wR,W  
} Gk0f#;  
#8G (r9  
} w:P$ S  
y{ReQn3> y  
SortUtil: @sRUl ,M;Z  
u;m[,  
package org.rut.util.algorithm; U)%gzXTZ%  
x'OE},>i  
import org.rut.util.algorithm.support.BubbleSort; s_A<bW566F  
import org.rut.util.algorithm.support.HeapSort; /(Se:jH$>  
import org.rut.util.algorithm.support.ImprovedMergeSort; %]Gm  
import org.rut.util.algorithm.support.ImprovedQuickSort; wiXdb[[#  
import org.rut.util.algorithm.support.InsertSort; *P,dR]-m  
import org.rut.util.algorithm.support.MergeSort; pZx'%-\-T  
import org.rut.util.algorithm.support.QuickSort; $bRakF1'S  
import org.rut.util.algorithm.support.SelectionSort; )'BuRN8  
import org.rut.util.algorithm.support.ShellSort; c0.i  
fJ_d ,4  
/** I6d4<#Q@L  
* @author treeroot 48JD >=@7  
* @since 2006-2-2 ^| L@f  
* @version 1.0 GE]cH6E  
*/ fX=o,=-f  
public class SortUtil { n$n)!XL/  
public final static int INSERT = 1; !sA[A>  
public final static int BUBBLE = 2; E^a He  
public final static int SELECTION = 3; C=& 7V  
public final static int SHELL = 4; ) # le|Rf  
public final static int QUICK = 5; pZ?7'+u$L  
public final static int IMPROVED_QUICK = 6; ~wmc5L/!?  
public final static int MERGE = 7; :uE:mY%R  
public final static int IMPROVED_MERGE = 8; #'N"<o[  
public final static int HEAP = 9; RHc63b\  
w,fA-*bZ 0  
public static void sort(int[] data) { 5|>FM&  
sort(data, IMPROVED_QUICK); jdsNZV  
} AV\6K;~  
private static String[] name={ ^sR]w]cz.  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Nf(Np1?;c  
}; !iBe/yb  
d?G ~k[C!a  
private static Sort[] impl=new Sort[]{ #?/&H;n_8S  
new InsertSort(), [EUp4%Z #  
new BubbleSort(), BFP (2j  
new SelectionSort(), B2\R#&X.  
new ShellSort(), a[;TUc^I1F  
new QuickSort(), MYgh^%w:  
new ImprovedQuickSort(), 5 Z+2  
new MergeSort(), <WN?  
new ImprovedMergeSort(), bjvpYZC\5  
new HeapSort() ^s z4-+>  
}; B]Vnu7  
?}4 =A&][  
public static String toString(int algorithm){ *GxOiv7"4W  
return name[algorithm-1]; a g Za+a  
} ZPHiR4fQli  
l<fZt#T  
public static void sort(int[] data, int algorithm) { $e66jV  
impl[algorithm-1].sort(data); n#,<-Rb-  
} =SJwCT0;  
QJ2V&t"3  
public static interface Sort { j{00iA}  
public void sort(int[] data); ck-ab0n  
} fx &b*O C  
]B'Ac%Rx  
public static void swap(int[] data, int i, int j) { y5;l?v94  
int temp = data; $2u^z=`b!%  
data = data[j]; HPT{83  
data[j] = temp; i[obQx S94  
} U40adP? a  
} Jj=0{(X  
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