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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。 hcd>A vC8  
插入排序: :Q ?J}N  
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package org.rut.util.algorithm.support; v?D kDnta  
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import org.rut.util.algorithm.SortUtil; ZqbM%(=z(`  
/** 1mn$Rh&dO  
* @author treeroot 5V nr"d  
* @since 2006-2-2 V,XP&,no\j  
* @version 1.0 Z#Zzi5<  
*/ 4zqE?$HM'  
public class InsertSort implements SortUtil.Sort{ \kV7NA  
_RaVnMJKX4  
/* (non-Javadoc) tw4am.o1]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }'V'Y[  
*/ |g\.5IM#W  
public void sort(int[] data) { #~URLN  
int temp; ro&Y7m  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); M-Z6TL  
} K~Au?\{  
} r,.95@  
} [> &+*c  
?X_0Iy}1  
} Fm$n@R bX  
L2>?m`wp  
冒泡排序: VIz{}_~'s  
*T>#zR{  
package org.rut.util.algorithm.support; ;8L+_YCa  
ADyNNMcx  
import org.rut.util.algorithm.SortUtil; Tt<-<oyU.  
 _WDBG  
/** 86[RH!e  
* @author treeroot m{lRFKx>s  
* @since 2006-2-2 h"BhTx7E}  
* @version 1.0 &Qq/Xi,bZ  
*/ ;sL6#Go?V  
public class BubbleSort implements SortUtil.Sort{ QVSsi j  
-wtTq ph'  
/* (non-Javadoc) p*AP 'cR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7o965h  
*/ s;_#7x#  
public void sort(int[] data) { G{:af:5Fo  
int temp; y13CR2t6  
for(int i=0;i for(int j=data.length-1;j>i;j--){ qN1e{T8u  
if(data[j] SortUtil.swap(data,j,j-1); XU;{28P  
} 5gc:Y`7t  
}  g`)/x\  
} "lU]tIpCu  
} KF:]4`$  
lk*0c {_L  
} iC\rhHKQ  
kKxL04  
选择排序: %|`:5s-T%  
$dx1[ V+_  
package org.rut.util.algorithm.support; 6z p@#vYI  
6"7:44O;G  
import org.rut.util.algorithm.SortUtil; (!_X:+0_  
}P&1s,S8J#  
/** ]xJ'oBhy  
* @author treeroot ^Kw&=u  
* @since 2006-2-2 a8bX"#OR&N  
* @version 1.0 u,Q_WR-wJ  
*/ nj~$%vmA  
public class SelectionSort implements SortUtil.Sort { pu2wEQ  
,);= (r9  
/* u-%r~ }  
* (non-Javadoc) f\x@ C)E  
* _o&,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P;L)1 g  
*/ uHUvntr  
public void sort(int[] data) { j#LV7@H.e?  
int temp; D y`W5_xSz  
for (int i = 0; i < data.length; i++) { B7Ki @)  
int lowIndex = i; ]|C_`,ux  
for (int j = data.length - 1; j > i; j--) { 1*!c X  
if (data[j] < data[lowIndex]) { q19k<BqR  
lowIndex = j; 8`AcS|k  
} 9&[) (On74  
} fR]p+\#8u*  
SortUtil.swap(data,i,lowIndex); ~>N`<S   
} 1BMV=_  
} tf$PaA  
12:h49AP  
} Y91 e1PsV  
`zElBD  
Shell排序: Pg*?[^*  
OQytgXED  
package org.rut.util.algorithm.support; Edf=?K+\!i  
g33<qYxP  
import org.rut.util.algorithm.SortUtil; XI%RneuDr:  
+X* F<6mZ  
/** ' D)1ka.  
* @author treeroot K)Df}fVOc  
* @since 2006-2-2 CU#L *kz  
* @version 1.0 eHVdZ'%x  
*/ r!=]Q}`F  
public class ShellSort implements SortUtil.Sort{ ;1{iF2jZ:  
%Lh-aP{[e  
/* (non-Javadoc) wE,=%?"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I<D&,LFH*w  
*/ vpeq:h  
public void sort(int[] data) { 'WKu0Yi^'  
for(int i=data.length/2;i>2;i/=2){ "B|nhd  
for(int j=0;j insertSort(data,j,i); dxzvPgi?  
} 26\HV  
}  /gqqKUx  
insertSort(data,0,1); ]Wy^VcqX  
} [ -9)T  
V9+xL 1U#  
/** =Q/w%8G  
* @param data W;3 R;  
* @param j 1?D8|<  
* @param i " jl1.Ah  
*/ {&\J)oZ  
private void insertSort(int[] data, int start, int inc) { @K,2mhE~h  
int temp; pTa'.m  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); \b_-mnN"  
} im_w+h%^  
} ^Ei*M0fF  
} ~I8v5 H  
+?URVp  
} MAuM)8_P/|  
ppwd-^f3j  
快速排序: w$DG=!  
]yyU)V0Iu  
package org.rut.util.algorithm.support; c0!Te'?  
?Ia4H   
import org.rut.util.algorithm.SortUtil; Ux_EpC   
gZw\*9Q9  
/**  4 "pS  
* @author treeroot C $]5l; `  
* @since 2006-2-2 T$gkq>!j<E  
* @version 1.0 KW&nDu t  
*/ M,b<B_$  
public class QuickSort implements SortUtil.Sort{ 9>A-$a4R>  
u~#%P&3 _W  
/* (non-Javadoc) i:l80 GK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) httls>:xB|  
*/ y-E1]4?})  
public void sort(int[] data) { z7'n, [  
quickSort(data,0,data.length-1); ]sX7%3P  
} &M0o&C-1/  
private void quickSort(int[] data,int i,int j){ pd=7^"[};  
int pivotIndex=(i+j)/2; N; rXl8  
file://swap b*lKT]D,  
SortUtil.swap(data,pivotIndex,j); S9OxI$6Y  
hVlyEsLg  
int k=partition(data,i-1,j,data[j]); &E.OyqGZV  
SortUtil.swap(data,k,j); euRCBzc  
if((k-i)>1) quickSort(data,i,k-1); /'-:=0a  
if((j-k)>1) quickSort(data,k+1,j); ::4"wU3t  
 K&j' c  
} z `\# $  
/** bcq@N  
* @param data -(6eVI  
* @param i .[edln  
* @param j pO\ S#GnX  
* @return re7!p(W?,  
*/ b0r,h)R  
private int partition(int[] data, int l, int r,int pivot) { Ro$j1Aw(  
do{ |C~Sr#6)7  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); l)}<#Ri  
SortUtil.swap(data,l,r); /DLr(  
} L=d$"Q  
while(l SortUtil.swap(data,l,r); ,)Yao;Cvd  
return l; y' 2<qj  
} cge-'/8w%  
$`^H:Djr  
} Zn?8\  
}phz7N9  
改进后的快速排序: OZ eiH X!  
8r2XGR  
package org.rut.util.algorithm.support; , yTN$K%M  
{\P?/U6~f  
import org.rut.util.algorithm.SortUtil; w+Ad$4Pf"  
G"}qV%"6"  
/** )$MS 0[?  
* @author treeroot Jm?l59bv v  
* @since 2006-2-2 (&q@~ dJ  
* @version 1.0 w#W5}i&x  
*/ [fd~nD#.  
public class ImprovedQuickSort implements SortUtil.Sort { }'u3U"9)  
|__d 8a  
private static int MAX_STACK_SIZE=4096; HTxB=Q|  
private static int THRESHOLD=10; O:2 #_  
/* (non-Javadoc) Tsu\oJ[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %wOOzp`  
*/ y@q1c*|  
public void sort(int[] data) { !>\9t9  
int[] stack=new int[MAX_STACK_SIZE]; ;F|jG}M"  
Q{O/xLf  
int top=-1; t9ER;.e  
int pivot; >Ja0hS{*  
int pivotIndex,l,r; ggMUdlU  
3)dP7rmZ  
stack[++top]=0; sc<kiL  
stack[++top]=data.length-1; A8J?A#R*{q  
',DeP>'%>  
while(top>0){ Xu6jHJ@x  
int j=stack[top--]; JFe4/ V  
int i=stack[top--]; g .3f2w  
! &y  
pivotIndex=(i+j)/2; JAN|aCzD  
pivot=data[pivotIndex]; k9cK b f@  
$$42pb.  
SortUtil.swap(data,pivotIndex,j); eDuX"/kHA  
Bhj:9%`  
file://partition !5NGlqEF#  
l=i-1; S 9WawI  
r=j; 5Lw{0uLr  
do{ Ec+22X  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ?.8<-  
SortUtil.swap(data,l,r); DQcWq'yY^  
} 0(\p<qq  
while(l SortUtil.swap(data,l,r); .hxin [Y  
SortUtil.swap(data,l,j); q{/*n]K  
S=4R5igrC  
if((l-i)>THRESHOLD){ V_jiOT!  
stack[++top]=i; +5#x6[  
stack[++top]=l-1; !TGr.R  
} P?xA$_+  
if((j-l)>THRESHOLD){ 6F,/w:  
stack[++top]=l+1; %z=`JhE"Q  
stack[++top]=j; jn~!V!+ +  
} %t q&  
Kf|0*c  
} P7'M],!9w  
file://new InsertSort().sort(data); g083J}08  
insertSort(data); hUBF/4s\  
} _'&k#Q  
/** 2,+d|1(4o  
* @param data  70{RDj6{  
*/ @#A!w;bz  
private void insertSort(int[] data) { T=.-Cl1A  
int temp; QJQJR/g  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); D_Guc8*  
} >cTjA):  
} R^uc%onP  
} \` &ej{  
Bf/ |{@  
} Rw/Ciw2@?  
nVNs][  
归并排序: @Zj& `/  
HXyFj  
package org.rut.util.algorithm.support; Q@3B{  
_g65pxt =Z  
import org.rut.util.algorithm.SortUtil; &u("|O)w$  
sLNNcj(Cy>  
/** Y4`QK+~fH  
* @author treeroot V>AS%lXj  
* @since 2006-2-2 JfSdUWxT  
* @version 1.0 {b[tA, >  
*/ hw*1gm  
public class MergeSort implements SortUtil.Sort{ 9Kx<\)-GMD  
2HSb.&7-G  
/* (non-Javadoc) #.o0mguU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q]^Yi1PbS  
*/ <;aJ#qT  
public void sort(int[] data) { !KAsvF,j  
int[] temp=new int[data.length]; 9]Lo  
mergeSort(data,temp,0,data.length-1); `wf|uM  
} Ep<YCSQy$i  
RU7!U mf  
private void mergeSort(int[] data,int[] temp,int l,int r){ i]dz}=j'  
int mid=(l+r)/2; IEc>.J|T&  
if(l==r) return ; 4aA9\\hfGY  
mergeSort(data,temp,l,mid); moaodmt]x  
mergeSort(data,temp,mid+1,r); Wy8,<K{  
for(int i=l;i<=r;i++){ 1c / X  
temp=data; bK?MT]%}r  
} *{Yh6 {  
int i1=l; K\~v&  
int i2=mid+1; ^:+Rg}]W^  
for(int cur=l;cur<=r;cur++){ zPHy2H$28  
if(i1==mid+1) [#>{4qY2  
data[cur]=temp[i2++]; W\%q} q2?  
else if(i2>r) ZzT&$J7]`{  
data[cur]=temp[i1++]; 8nodV 9  
else if(temp[i1] data[cur]=temp[i1++]; )Y~xIj >  
else wW^Zb  
data[cur]=temp[i2++]; -IbbPuRq  
} k},>^qE  
} lYP~3wp99  
s+'XQs^{aj  
} !:dL~n  
b#A(*a_gN  
改进后的归并排序: Qne0kB5m  
IyOpju)?  
package org.rut.util.algorithm.support; IKo;9|2U  
LfHzT<)|  
import org.rut.util.algorithm.SortUtil; J$rJd9t  
W~<m[#:6C  
/** R2CQXhiJ  
* @author treeroot \@8*TS  
* @since 2006-2-2 ?d~]Wd!z  
* @version 1.0 -w\M-wc/$  
*/ ljuNs@q  
public class ImprovedMergeSort implements SortUtil.Sort { 1TIlINlJ  
Ww=O=c5uOu  
private static final int THRESHOLD = 10; %EWq2'/5  
:pb67Al29  
/* W"|mpxp  
* (non-Javadoc) 8?kP*tmcZ  
* j3{HkcjJG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mTJ"l(,3  
*/ jFG5)t<D  
public void sort(int[] data) { EavX8r  
int[] temp=new int[data.length]; S*xhX1yUi  
mergeSort(data,temp,0,data.length-1); X>{p}vtvf>  
} R5gado  
>(OYK}ZN  
private void mergeSort(int[] data, int[] temp, int l, int r) { HS7_MGU  
int i, j, k; Co[n--@C  
int mid = (l + r) / 2; Tt%}4{"  
if (l == r) -,|ha>r  
return; -Uri|^t  
if ((mid - l) >= THRESHOLD) ZL=N[XW4'  
mergeSort(data, temp, l, mid); -~\f2'Q  
else L{<7.?{Y  
insertSort(data, l, mid - l + 1); j %H`0  
if ((r - mid) > THRESHOLD) <XvYa{t]{  
mergeSort(data, temp, mid + 1, r); JtFiFaCxY  
else <ZVZ$ZW~D  
insertSort(data, mid + 1, r - mid); yhwy>12,K  
P:^=m*d  
for (i = l; i <= mid; i++) { 7 v~ro  
temp = data; nEyI t&> 9  
} SY|Ez!tU:N  
for (j = 1; j <= r - mid; j++) { 6"+8M 3M l  
temp[r - j + 1] = data[j + mid]; d/lffNS=  
} z&>|*C.Y  
int a = temp[l]; UGCox-W"  
int b = temp[r]; p1~*;;F  
for (i = l, j = r, k = l; k <= r; k++) { 6g~+( ({lQ  
if (a < b) { D^|7#b,zcH  
data[k] = temp[i++]; G5;V.#"Z[  
a = temp; S/fW/W*/}  
} else { CL1 oAk  
data[k] = temp[j--]; [%?y( q  
b = temp[j]; 2uL9.q  
} c.0]1  
} (A uPZ  
} kW +G1|  
:3 y_mf>  
/** $kl$D"*0  
* @param data nj  
* @param l E(;i>   
* @param i x2m]Us@LIU  
*/ LipxAE?O  
private void insertSort(int[] data, int start, int len) { 9~~UM<66W  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); np=kTJ  
} `iQqhx  
} wVE:X3Ei  
} M~p=#V1D  
} (Q_2ODKo  
K$ AB} Fvc  
堆排序: cix36MR_  
c D7FfJ  
package org.rut.util.algorithm.support; #w*"qn#2Uz  
:,^>d3k  
import org.rut.util.algorithm.SortUtil; mW +tV1XjG  
e9:P9Di(b  
/** !F$R+A+L  
* @author treeroot ^yJ:+m;6K  
* @since 2006-2-2 />F.Nsujy  
* @version 1.0 Hk9U&j$  
*/ T>F9Hs  W  
public class HeapSort implements SortUtil.Sort{ /AR]dcL@76  
 D%gGRA  
/* (non-Javadoc) az2X ch]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KuXkI;63J>  
*/ H`el#tt_  
public void sort(int[] data) { NnOI:X {  
MaxHeap h=new MaxHeap(); gc,Ps  
h.init(data); 8^vArS;  
for(int i=0;i h.remove(); P#*n3&Uu  
System.arraycopy(h.queue,1,data,0,data.length); *Ru2:}?MpS  
} )8'jxiGs  
4| f}F  
private static class MaxHeap{ `)tA YH  
PU Cx]5  
void init(int[] data){ ~K` 1  
this.queue=new int[data.length+1]; bjzx!OCpV  
for(int i=0;i queue[++size]=data; Bm} iU~(Z`  
fixUp(size); R&Ci/  
} .[(P  
} Q7(eq0na  
v|&s4x?D  
private int size=0; =<.F3lo\s  
D:m#d.m  
private int[] queue; 'HB~Dbq`V  
/[?Jylj  
public int get() { &O*ENpF  
return queue[1]; ]! )xr  
} "i%jQL'.  
[b;Uz|o  
public void remove() { -l[jEJS}  
SortUtil.swap(queue,1,size--); (}jL_E  
fixDown(1); <+q$XL0  
} enumK\  
file://fixdown |^ iA6)Q  
private void fixDown(int k) { P^zy;Qs7  
int j; A{(T'/~"  
while ((j = k << 1) <= size) { 41}/w3Z4  
if (j < size %26amp;%26amp; queue[j] j++; DxfMqH[vs  
if (queue[k]>queue[j]) file://不用交换 ls @5^g  
break; Ay%:@j(E  
SortUtil.swap(queue,j,k); N9`97;.X  
k = j;  Q; 20T  
} +'%\Pr(  
} afUTAP@  
private void fixUp(int k) { (Fqa][0  
while (k > 1) { } # Xi`<{  
int j = k >> 1; S_5?U2%D  
if (queue[j]>queue[k]) b{pg!/N4  
break; Hg whe=P  
SortUtil.swap(queue,j,k); aTClw<6}  
k = j; Kj!Y K~~  
} L|J~9FM  
} 9wMEvX70  
a( |xw  
} MA6P"?  
@\PpA9ebg%  
}  qpTm  
W_m!@T"@H  
SortUtil: U`1l8'W}:#  
F.0d4:A+  
package org.rut.util.algorithm; )&z4_l8`=  
L#ZLawG  
import org.rut.util.algorithm.support.BubbleSort; 27iy4(4  
import org.rut.util.algorithm.support.HeapSort; 5~[N/Gl  
import org.rut.util.algorithm.support.ImprovedMergeSort; ~6sE an3p  
import org.rut.util.algorithm.support.ImprovedQuickSort; 7E(%9W6P  
import org.rut.util.algorithm.support.InsertSort; yQwVQUW8B  
import org.rut.util.algorithm.support.MergeSort; waQtr,m)  
import org.rut.util.algorithm.support.QuickSort; PkJcd->  
import org.rut.util.algorithm.support.SelectionSort; x.\XUJ4x  
import org.rut.util.algorithm.support.ShellSort; lY,/ W  
T.2ZBG ~|[  
/** ZpWu,1  
* @author treeroot i@6wO?Tv  
* @since 2006-2-2 6|oWaA\gI  
* @version 1.0 }{mG/(LX8  
*/ 045\i[l=  
public class SortUtil { v F[CWV.  
public final static int INSERT = 1; x~Agm_Tu+'  
public final static int BUBBLE = 2; 6RP+4c  
public final static int SELECTION = 3; n1?}Xq|  
public final static int SHELL = 4; L$}g3{  
public final static int QUICK = 5; LU( %K{9  
public final static int IMPROVED_QUICK = 6; }$:#+ (17  
public final static int MERGE = 7; u<kD}  
public final static int IMPROVED_MERGE = 8; 9v$qrM`8  
public final static int HEAP = 9; >2Ca5C  
s|gp  
public static void sort(int[] data) { gIBpOPr^d  
sort(data, IMPROVED_QUICK); A6i et~h[  
} [Auc*@  
private static String[] name={ m>YWxa   
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" %A2`&:ip  
}; x< S\D&  
AsAFUuI  
private static Sort[] impl=new Sort[]{ "& Mou  
new InsertSort(), A;T[['  
new BubbleSort(), J 8q  
new SelectionSort(), y1u9 B;Fd  
new ShellSort(), iD`k"\>9  
new QuickSort(), HL8(lPgS  
new ImprovedQuickSort(), ]738Z/)^  
new MergeSort(), 3cHtf  
new ImprovedMergeSort(), uP Rl[tS0  
new HeapSort() H|K("AVP:  
}; e/@29  
w%rg\E  
public static String toString(int algorithm){ j8c6[ih  
return name[algorithm-1]; \gd6Yx^[  
} 3&9zGy{V+  
quRPg)  
public static void sort(int[] data, int algorithm) { `VXZ khm  
impl[algorithm-1].sort(data); */Cj$KY70  
} ENyAF%6  
8 ?" Ze(  
public static interface Sort { _k|g@"  
public void sort(int[] data); &SrGh$:X  
} UM`nq;>  
.HCaXFW  
public static void swap(int[] data, int i, int j) { K plM['uF  
int temp = data; C d|W#.6  
data = data[j]; eQ\jZ0s;p  
data[j] = temp; 2/EK`S  
} ,{+6$h3  
} `I{tZ$iD  
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