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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。 j;%RV)e  
插入排序: )X-~+X91 S  
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package org.rut.util.algorithm.support; eYSVAj  
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import org.rut.util.algorithm.SortUtil; 4-ijuqjN  
/** ~:h-m\=8Y  
* @author treeroot W>jgsR79M  
* @since 2006-2-2 yxv]G6  
* @version 1.0 %A 4F?/E  
*/ +-8u09-F  
public class InsertSort implements SortUtil.Sort{ gN"Abc  
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/* (non-Javadoc) /m#!<t7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u~ %xU~v  
*/ x.gRTR`7(  
public void sort(int[] data) { M? 7CBqZ  
int temp; 8&d s  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); r7dvj#^  
} +[W_J z  
} f+A!w8E  
} c:;m BS>~  
8M9LY9C  
} x[%z \  
aX`@WXK  
冒泡排序: fMg3  
sqKLz  
package org.rut.util.algorithm.support; h5@v:4Jjo~  
R.ZC|bPiD  
import org.rut.util.algorithm.SortUtil; y~ubH{O#  
;4E(n  
/** F|Y}X|x8Q  
* @author treeroot p~X=<JM  
* @since 2006-2-2 Z]Zs"$q@  
* @version 1.0 mv%Zh1khn/  
*/ 'ju  
public class BubbleSort implements SortUtil.Sort{ e-@=QI^,  
o XKH,r  
/* (non-Javadoc) ZmT N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s]=bg+v?j  
*/ M mihWD02  
public void sort(int[] data) { X{8/]'(  
int temp; '3n?1x  
for(int i=0;i for(int j=data.length-1;j>i;j--){ qRV5qN2{XY  
if(data[j] SortUtil.swap(data,j,j-1); BbCt_z'  
} 7*{9 2_M  
} H2EKr#(  
} ]J`yh$a  
} t,CC~  
kTCWyc  
} |dLA D4%  
A4kYE A  
选择排序: ez2rCpA  
K/^70;/!.  
package org.rut.util.algorithm.support; d5b \kRr  
4tZnYGvqe  
import org.rut.util.algorithm.SortUtil; (YOp  
K9-?7X  
/** 0u,OW  
* @author treeroot fe,A\W&8  
* @since 2006-2-2 C`)n\?:Sth  
* @version 1.0 !21#NCw  
*/ {9 PeBc  
public class SelectionSort implements SortUtil.Sort { gy%/zbZx  
T(n<@Ac]V  
/* x+mf QcSD&  
* (non-Javadoc) wF@mHv  
* .bwKG`F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hh|a(Zq,  
*/ O&ur |&v  
public void sort(int[] data) { ue YBD]3'  
int temp; >'qkW$-95  
for (int i = 0; i < data.length; i++) { Dg:2*m_!j{  
int lowIndex = i; 4nIs+  
for (int j = data.length - 1; j > i; j--) { vmV<PK-  
if (data[j] < data[lowIndex]) {  xr }jw  
lowIndex = j; +N~?_5lv\s  
} &HS6}  
} 3n\eCdV-b<  
SortUtil.swap(data,i,lowIndex); vai.w-}Z  
} VaLx-RX  
} 8Gw0;Uu8D  
kO1.27D  
} 4sj:%% UE  
^CZ)!3qd1  
Shell排序: =f4v: j}'|  
81(.{Y839_  
package org.rut.util.algorithm.support; =Wb!j18]  
d|nJp-%V  
import org.rut.util.algorithm.SortUtil; ?O]iX;2vM  
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/** {95z\UE}  
* @author treeroot hH=H/L_Z  
* @since 2006-2-2 y 093-  
* @version 1.0 - %ul9}.  
*/ 2N,<~L`FX'  
public class ShellSort implements SortUtil.Sort{ n'dxa<F2|  
Pk9 4O  
/* (non-Javadoc) 3IrmDT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^t|CD|,K_O  
*/ *2$I, ~(P  
public void sort(int[] data) { <($'jlZ  
for(int i=data.length/2;i>2;i/=2){ Ym)8L.  
for(int j=0;j insertSort(data,j,i); `L-GI{EJ  
}  P[l?  
} 6$d3Ap@Gl  
insertSort(data,0,1); ]A;{D~X^w  
} .x 1&   
o0f{ePZ=  
/** G^Z SQ!  
* @param data ZTq"SQ>ym  
* @param j c4T8eTKU  
* @param i (x.O]8GKP  
*/ (A6 -9g>  
private void insertSort(int[] data, int start, int inc) { e``X6=rcG  
int temp; 4h|48</  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); h{ &X`$  
} "`sr#  
} %:^|Q;xe  
} T8ga)BA  
ql|ksios  
} GsYi/Z   
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快速排序: m{U+aqAQK  
JWu^7}@~=  
package org.rut.util.algorithm.support; ^>g7Kg"0  
|{KZ<  
import org.rut.util.algorithm.SortUtil; ,ZVC@P,L  
-I#]#i@gX  
/** LD'eq\vO  
* @author treeroot {x $h K98  
* @since 2006-2-2 Dm,*G`Js  
* @version 1.0 }d,iA FG  
*/ ^,Paih 2  
public class QuickSort implements SortUtil.Sort{ :/Zy=F9:  
 X,zqI  
/* (non-Javadoc) 8x`?Yc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Zcaec#  
*/ -SZW[T<N"  
public void sort(int[] data) { l7{Xy_66  
quickSort(data,0,data.length-1); l9U^[;D  
} )PM&x   
private void quickSort(int[] data,int i,int j){ qRD]Q  
int pivotIndex=(i+j)/2; sknta 0^=2  
file://swap L*A9a  
SortUtil.swap(data,pivotIndex,j); 1^bI9 /  
8s,B,s.  
int k=partition(data,i-1,j,data[j]); C?UV3  
SortUtil.swap(data,k,j); ZDmBuf q  
if((k-i)>1) quickSort(data,i,k-1); 0;*1g47\  
if((j-k)>1) quickSort(data,k+1,j); h\ZnUn_J  
1:3I G=  
} <f l-P  
/** DPrFBy  
* @param data |<,!K;@  
* @param i MKad 5gD*<  
* @param j @"`J~uK  
* @return %;SOe9  
*/ G~oGBq6Gz  
private int partition(int[] data, int l, int r,int pivot) { MroJ!.9  
do{ z|VQp,ra  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); "V|1w>s  
SortUtil.swap(data,l,r); QEl:>HG  
} @`qhQ  
while(l SortUtil.swap(data,l,r); 9-<EeV_/  
return l; }Q7 ~tu  
} Et\z^y  
e 1W9Z $m  
} F_m[EB  
])dq4\Bw  
改进后的快速排序: Up61Xn  
_N4G[jQLJ  
package org.rut.util.algorithm.support; &zl=}xeA  
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import org.rut.util.algorithm.SortUtil; ,tdV-9N[O  
UjNe0jt% s  
/** wS Ty2Oyo;  
* @author treeroot _m;#+`E  
* @since 2006-2-2 Vb0((c%&  
* @version 1.0 gbP]!d:I  
*/ Ax D&_GT  
public class ImprovedQuickSort implements SortUtil.Sort { kPN:m ow  
CJ*8x7-t  
private static int MAX_STACK_SIZE=4096; Z J:h]  
private static int THRESHOLD=10; D49yV`  
/* (non-Javadoc) ;a]2hd"6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ] m$;ra]  
*/ beLT4~Z=  
public void sort(int[] data) { |1sl>X,  
int[] stack=new int[MAX_STACK_SIZE]; 3"ALohlL  
/D]?+<h1  
int top=-1; _]SV@q^  
int pivot; C_SJ4Sh  
int pivotIndex,l,r; KrcL*j&^  
+{Qk9Z  
stack[++top]=0; W^}fAcQKH  
stack[++top]=data.length-1; I]HrtI  
WoP5[.G  
while(top>0){ [:cy.K!Uo%  
int j=stack[top--]; Wb*A};wE  
int i=stack[top--]; 3$fzqFo  
6#sd"JvtQ  
pivotIndex=(i+j)/2; Zt3"4d4  
pivot=data[pivotIndex]; ;T!w$({V0z  
J{W<6AK\S  
SortUtil.swap(data,pivotIndex,j); jf_xm=n  
 .;ptgX  
file://partition 0PiD<*EA  
l=i-1; +!dWQ=W  
r=j; Qh4@Nl#Ncf  
do{ [LDV*79Z  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); *]<M%q!<6  
SortUtil.swap(data,l,r); DnbT<oEL  
} [If%+mHdU  
while(l SortUtil.swap(data,l,r); -;5WMX 6  
SortUtil.swap(data,l,j); AE1EZ#  
(*{Y#XD{  
if((l-i)>THRESHOLD){ {)E)&lL  
stack[++top]=i; ao2NwH##  
stack[++top]=l-1; ~>h_#sIBC  
} ,{"%-U#z  
if((j-l)>THRESHOLD){ !j'9>G{T  
stack[++top]=l+1; vbH?[ Zr?  
stack[++top]=j; $a'n{EP  
} ^gP pmb<x  
,BGaJ|k  
} :#CQQ*@  
file://new InsertSort().sort(data); ya[][!.G  
insertSort(data); MHh>~Y(h  
} ]njObU)[zr  
/** H7&>cM  
* @param data 2=P.$Kx  
*/ jNKu5"HB  
private void insertSort(int[] data) { Q\WH2CK  
int temp; ZE+VLV v  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Ce: 2Tw  
} U^ bF}4m  
} %Vf3r9 z  
} -4  ~(*  
TvV_Tz4e  
} yV;_]_EO  
60 D0z  
归并排序: $ yd "bJK  
74Fv9  
package org.rut.util.algorithm.support; 8SV.giG;  
S;pKL,d>r  
import org.rut.util.algorithm.SortUtil; l~|x*JTq  
L'=mDb  
/** 1}O&q6\"J  
* @author treeroot *fz]Q>2ga  
* @since 2006-2-2 )U6-&-07  
* @version 1.0 X~m*`UH  
*/ azEN_oUV  
public class MergeSort implements SortUtil.Sort{ !bf8 r  
qa>Z?/w  
/* (non-Javadoc) Dt)O60X3>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HF(pC7/a:  
*/ Fjq~^_8  
public void sort(int[] data) { SSoD}N  
int[] temp=new int[data.length]; o75Hit  
mergeSort(data,temp,0,data.length-1); 0?x9.]  
} :Z(w,  
oqLM-=0<}  
private void mergeSort(int[] data,int[] temp,int l,int r){ 5somoV B  
int mid=(l+r)/2; ,hMd xZJd  
if(l==r) return ; 9j[lr${A  
mergeSort(data,temp,l,mid); a]JQZo1$  
mergeSort(data,temp,mid+1,r); nSMw5  
for(int i=l;i<=r;i++){ fdU`+[_  
temp=data; ]UtfI  
} /UwB6s(  
int i1=l; n U0  
int i2=mid+1; -SyQ`V)T7N  
for(int cur=l;cur<=r;cur++){ i3bDU(GS  
if(i1==mid+1) rn$LZE %  
data[cur]=temp[i2++]; -0pAj}_2}  
else if(i2>r) MST\_s%[  
data[cur]=temp[i1++]; mpsi{%gA  
else if(temp[i1] data[cur]=temp[i1++];  l,}^<P]  
else =g]Ln)jc  
data[cur]=temp[i2++]; R 4= ~  
} Z@Tb3N/[  
} p#k>BHgnF  
gb_r <j:w  
} #2dd`F8  
UW!*=?h  
改进后的归并排序: lWiC$  
&CtWWKS"  
package org.rut.util.algorithm.support; z}772hMB  
M1>2Q[h7  
import org.rut.util.algorithm.SortUtil; z8MKGM  
}&E'ox<S  
/** ]]R!MnU:$  
* @author treeroot @<^_ _."  
* @since 2006-2-2 qD#E, "%  
* @version 1.0 DK\Ud6w  
*/ *x0nAo_n  
public class ImprovedMergeSort implements SortUtil.Sort { s":\ >  
5eP0W#  
private static final int THRESHOLD = 10; HB/q v IzB  
ZxvqLu  
/* }DCR(p rD  
* (non-Javadoc) $e99[y@  
* >v r! 3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S2^Ckg  
*/ IY* ~df  
public void sort(int[] data) { 4`KQ@m  
int[] temp=new int[data.length]; {[ E7Cf  
mergeSort(data,temp,0,data.length-1); ;usv/8  
} LTof$4s  
vt(A?$j|A  
private void mergeSort(int[] data, int[] temp, int l, int r) { 1\hh,s  
int i, j, k; P&6hk6#  
int mid = (l + r) / 2; Q&JnF`*  
if (l == r) U]8 @  
return; Ao2m"ym  
if ((mid - l) >= THRESHOLD) |FR'?y1  
mergeSort(data, temp, l, mid); dn? #}^,"  
else Nt>wzPd)  
insertSort(data, l, mid - l + 1); Ke 5fe#  
if ((r - mid) > THRESHOLD) #z( JYw,  
mergeSort(data, temp, mid + 1, r); x)^/3  
else RyAss0Sm^  
insertSort(data, mid + 1, r - mid); K6 {0`'x  
y4^w8'%MC  
for (i = l; i <= mid; i++) { g^`; B"  
temp = data; iC$mb~G  
} r+#!]wNPe  
for (j = 1; j <= r - mid; j++) { Pc{0Js5VzE  
temp[r - j + 1] = data[j + mid]; o3s ME2  
} ]<Ugg  
int a = temp[l]; Za5bx,^  
int b = temp[r]; ~_;x o?@ba  
for (i = l, j = r, k = l; k <= r; k++) { c@uNA0 p  
if (a < b) { lZ\8$,B)  
data[k] = temp[i++]; vWGjc2_  
a = temp; j/C.='?%  
} else { ;Wo\MN  
data[k] = temp[j--]; +!'rw D  
b = temp[j]; xlhc`wdm  
} b `TA2h  
} Q\!0V@$  
} :(^, WOf  
Sz"rp9x+  
/** f0<'IgN  
* @param data 2V-zmyJs5  
* @param l zG[GyyAQ  
* @param i vv9=g*"j  
*/ qYwEPGa\  
private void insertSort(int[] data, int start, int len) { SccaX P  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); xM#+jI  
}  GD]yP..  
} C}7 c:4c  
} !8z,}HUdK  
} @@])B#  
BB>R=kt  
堆排序: !_ng_,J  
0Ud.u  
package org.rut.util.algorithm.support; 2#^@awJ ?  
)`*=P}D  
import org.rut.util.algorithm.SortUtil; u>YC4&  
K]<49`MX  
/** t9!8Bh<  
* @author treeroot *h H\H  
* @since 2006-2-2 +V N&kCx)  
* @version 1.0 4ox[,  
*/ 2v;F@fUB.  
public class HeapSort implements SortUtil.Sort{ 7I_1Lnnf  
q@"0(Oj  
/* (non-Javadoc) IKm_YQ$XOy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (b]r_|'  
*/ b/yXE)3 X  
public void sort(int[] data) { (B0tgg^jj,  
MaxHeap h=new MaxHeap(); 5y1:oiE/  
h.init(data); tbNIl cAWS  
for(int i=0;i h.remove(); 3~r>G  
System.arraycopy(h.queue,1,data,0,data.length); {cYS0%Go  
} zx(=ArCRr  
9/@7NNKJ  
private static class MaxHeap{ 3=)!9;uY  
8ph*S&H  
void init(int[] data){ <z=d5g{n  
this.queue=new int[data.length+1]; pow.@  
for(int i=0;i queue[++size]=data; 5*n3*rbU:  
fixUp(size); o\ M  
} K).Gj2 $  
} LzS)WjEN  
AwC"c '  
private int size=0; LXGlG  
_>k&,p]y  
private int[] queue; Q#Vg5H4  
V"r2 t9A  
public int get() {   OH*  
return queue[1]; (PM!{u=  
}  MoFAQe  
tr<iFT}C  
public void remove() { .[qm>j,  
SortUtil.swap(queue,1,size--); 9(CY"Tc3  
fixDown(1); T+0Z2H  
} "E6*.EtTN#  
file://fixdown Hl3%+f  
private void fixDown(int k) { =MsQ=:ZV  
int j; pSzO )j  
while ((j = k << 1) <= size) { a@ub%laL Z  
if (j < size %26amp;%26amp; queue[j] j++; P`HDQ/^O  
if (queue[k]>queue[j]) file://不用交换 1dl@2CVS  
break; \d,wcL  
SortUtil.swap(queue,j,k); {Y(#<UDM  
k = j; Q8~|0X\.g  
} DC5^k[m  
} z+k[HE^S  
private void fixUp(int k) { )5O E~}>  
while (k > 1) { [@PD[-2QG3  
int j = k >> 1; >,&@j,?']  
if (queue[j]>queue[k]) o-f;$]yp>  
break; ==?!z<I.d  
SortUtil.swap(queue,j,k); |BC/ERms  
k = j; A0@E^bG  
} (:spA5  
} >p[skN   
0[O."9  
} +'@j~\>^yJ  
nc.(bb),  
} KbcmK( `_  
c=52*&  
SortUtil: ma%PVz`I;9  
W{v{sQg  
package org.rut.util.algorithm; \D<w:\P  
a  St  
import org.rut.util.algorithm.support.BubbleSort; ]c=nkS  
import org.rut.util.algorithm.support.HeapSort; "3r7/>xy  
import org.rut.util.algorithm.support.ImprovedMergeSort; ?uBZ"^'  
import org.rut.util.algorithm.support.ImprovedQuickSort; zBKfaQI,  
import org.rut.util.algorithm.support.InsertSort; ?##3E, /"9  
import org.rut.util.algorithm.support.MergeSort; ?c;T4@mB  
import org.rut.util.algorithm.support.QuickSort; ~hk;OB;  
import org.rut.util.algorithm.support.SelectionSort; 3`mM0,fY  
import org.rut.util.algorithm.support.ShellSort; z5|m`$gy  
ALOS>Bi&  
/** icw (y(W  
* @author treeroot "~|;XoMU  
* @since 2006-2-2 tS@J)p+_(  
* @version 1.0 yG ,oSp|  
*/ us0{y7(p  
public class SortUtil { 6zf3A:]&{  
public final static int INSERT = 1; cj5; XK  
public final static int BUBBLE = 2; !gKz=-C  
public final static int SELECTION = 3; 1\{_bUZ&  
public final static int SHELL = 4; Bw`7ND}&  
public final static int QUICK = 5; W7 .Y`u[  
public final static int IMPROVED_QUICK = 6; \H -,^[G3  
public final static int MERGE = 7; q"uP%TN  
public final static int IMPROVED_MERGE = 8; RY4b <i3  
public final static int HEAP = 9; 'ZUB:R@[  
p[J 8 r{'  
public static void sort(int[] data) { VOY#Y*)g  
sort(data, IMPROVED_QUICK); H ({Y  
} z/Kjz$l!  
private static String[] name={ L4x08 e  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 3SMb#ce*o  
}; itpljh  
M< 1rQW'  
private static Sort[] impl=new Sort[]{ DJGq=*  
new InsertSort(), v Wt{kg;  
new BubbleSort(), @}r2xY1  
new SelectionSort(), ?L'4*S]  
new ShellSort(), V|njgcn d  
new QuickSort(), iL](w3EM  
new ImprovedQuickSort(), #zL0P>P'a  
new MergeSort(), KBO{ g:"  
new ImprovedMergeSort(), =ll{M{0Q]!  
new HeapSort() rRK^vfoJ`  
}; v6$ }saTX  
:-.K.Ch|:  
public static String toString(int algorithm){ +kXj+2  
return name[algorithm-1]; CL%+`c0  
} EK JPeeRY  
DJu&l  
public static void sort(int[] data, int algorithm) { OSDx  
impl[algorithm-1].sort(data); t]QGyW A]  
} K~MTbdg  
.Y^UPxf@  
public static interface Sort { YcQ3 :i  
public void sort(int[] data); U&\2\z3{  
} `Qrrnq  
VZRM=;V  
public static void swap(int[] data, int i, int j) { O6Gg?j  
int temp = data; mH/$_x)o  
data = data[j]; -eA3o2'  
data[j] = temp; |K jy4.2  
} 2^TJ_xG~  
} =64%eF  
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