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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。 -$4PY,  
插入排序: qGgT<Rd~1  
*B`wQhB%  
package org.rut.util.algorithm.support; Wel-a< e  
aC$hg+U$G  
import org.rut.util.algorithm.SortUtil; <$HP"f+<S5  
/** 1< ;<?  
* @author treeroot F\&R nDJ  
* @since 2006-2-2 dH zo_VV  
* @version 1.0 >e"CpbZ'  
*/ 4S@^ym  
public class InsertSort implements SortUtil.Sort{ A3bE3Fk$  
Ah28D!Gor  
/* (non-Javadoc) Q5/".x^@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pl V]hu27K  
*/ hIC$4lR~  
public void sort(int[] data) { $GYcZN&  
int temp; 2RidI&?c<  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =\?KC)F*e  
} <`b)56v:+  
} \:\rkc9LI  
} y}5H<ZcXA  
.T/\5_Bx  
} ZPY#<^WOzr  
c Q|nL  
冒泡排序: *obBo6!zM  
frk(2C8T  
package org.rut.util.algorithm.support; kc\^xq~  
4WZ:zr N  
import org.rut.util.algorithm.SortUtil; vu;pILN  
\SS1-UbL  
/** YUat}-S  
* @author treeroot J"L+`i  
* @since 2006-2-2 (qnzz!s  
* @version 1.0 k/?5Fs!#  
*/ tpO%)*  
public class BubbleSort implements SortUtil.Sort{ gh|TlvnA  
WrQe'ny  
/* (non-Javadoc) R~iJ5@[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )'KkO$^&  
*/ +ZEj(fd9  
public void sort(int[] data) { Q}2aBU.f  
int temp; $rv&!/}]e  
for(int i=0;i for(int j=data.length-1;j>i;j--){ T$)&8"Xya  
if(data[j] SortUtil.swap(data,j,j-1); O{uc  h  
} >}%  
} D.9qxM"Z>  
} E4 GtJ`{X  
} bf|s=,D  
$DeHo"mg7m  
} K>hQls+  
-/Pg[Lx7Pb  
选择排序: P3UU~w+s  
L\)ssO uh  
package org.rut.util.algorithm.support;  eme7y  
'/%]B@!  
import org.rut.util.algorithm.SortUtil; =VFi}C/  
~v"4;A 6  
/** gQMcQV]C$  
* @author treeroot Zvz Zs  
* @since 2006-2-2 <fg~+{PA&  
* @version 1.0 (3~h)vaJ  
*/ o{7wPwQ;*  
public class SelectionSort implements SortUtil.Sort { GdHFgxI  
9+H C!Uot  
/* f]%:.N~1w  
* (non-Javadoc) .}!"J`{ W  
* @6\Id7`Ea  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @lpo$lN0R  
*/ ,Ta k',  
public void sort(int[] data) { dt&m YSZ}  
int temp; .8Eh[yiln  
for (int i = 0; i < data.length; i++) { {\zTE1X9  
int lowIndex = i; 3L}eF g,d  
for (int j = data.length - 1; j > i; j--) { 'EzKu~*  
if (data[j] < data[lowIndex]) { gySCK-(y  
lowIndex = j; >NLG"[\  
} X83,f CCl5  
} R !&9RvNw  
SortUtil.swap(data,i,lowIndex); NM FgCL  
} T.bn~Z#f  
} hTfq>jIB_  
X~UrAG}_  
} 9w3KAca  
?D>%+rK8c  
Shell排序: mVXwU](N  
O>R@Xj)M  
package org.rut.util.algorithm.support; 1S[4@rZ  
&{4KymB:  
import org.rut.util.algorithm.SortUtil; g'X{  
%f)%FN . S  
/** / R-1s  
* @author treeroot {Jbouj?V!  
* @since 2006-2-2 Z.}Z2K  
* @version 1.0 "2 \},o9  
*/ 6~34L{u  
public class ShellSort implements SortUtil.Sort{ O0l1AX"  
@`mr|-Rp@  
/* (non-Javadoc) @\U;?N~k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i/{dD"HwM  
*/ dzk1!yy  
public void sort(int[] data) { hKVb#|$  
for(int i=data.length/2;i>2;i/=2){ u+lNcyp"MW  
for(int j=0;j insertSort(data,j,i); 4 :phq  
} *epK17i=  
} \h>6k  
insertSort(data,0,1); Gq=tR`.  
} ^*G UcQ$  
b.q/? Yx  
/** ke<l@w O  
* @param data kfY. 9$(d  
* @param j  eC[G4  
* @param i i);BTwW)#]  
*/ w-];!;%  
private void insertSort(int[] data, int start, int inc) { M1z ?E@kz  
int temp; z? Iu;X  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); fBb:J+  
} =qvn?I^/  
} ,\ -4X  
} :x,dYJm  
|J"\~%8  
} rR4?*90vjj  
!5qV}5  
快速排序: 00LL&ot  
PYwGGB-  
package org.rut.util.algorithm.support; (M?VB*sm0  
"r=p/"4D  
import org.rut.util.algorithm.SortUtil; ~Qd|.T  
e= XC$Jv  
/** 8Ow#W5_3|  
* @author treeroot QFB2,k6jN  
* @since 2006-2-2 g)ofAG2  
* @version 1.0 F0wW3+G  
*/ vjVa),2  
public class QuickSort implements SortUtil.Sort{ a$EudD#+  
zjTCq; G  
/* (non-Javadoc) 4av  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kT%m`  
*/ ewdcAF5  
public void sort(int[] data) { v8 II=9  
quickSort(data,0,data.length-1); RT2&^9-  
} 8 .&P4u i  
private void quickSort(int[] data,int i,int j){ o4^#W;%w  
int pivotIndex=(i+j)/2; E<p<"UjcCJ  
file://swap #3O$B*gV6  
SortUtil.swap(data,pivotIndex,j); ]M 2n%9  
)afH:  
int k=partition(data,i-1,j,data[j]); u`XZtF<vf  
SortUtil.swap(data,k,j); J[UTn'M8]  
if((k-i)>1) quickSort(data,i,k-1); mqBX1D`e2  
if((j-k)>1) quickSort(data,k+1,j); ?es9j]  
~iIFe+6  
} [fJxbr"  
/** 8/}S/$  
* @param data gF]IAZCi  
* @param i *CVI@:Q9  
* @param j @7sHFwtar?  
* @return % C)|fDwN  
*/ .B! L+M< [  
private int partition(int[] data, int l, int r,int pivot) { <899r \  
do{ 1`1Jn*|TI  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Wt=%.Y( x  
SortUtil.swap(data,l,r); 5r0Sl89J  
} ()fYhk|W  
while(l SortUtil.swap(data,l,r); {\ VmNnw  
return l; 'h> l_A  
} :FixLr!q  
?#:!!.I:  
} t&C0V|s79$  
(#Xgfb"S3  
改进后的快速排序: '<wZe.Q!  
OSK:Cb.-?F  
package org.rut.util.algorithm.support; V^\b"1X7N  
cMfnc.P\K  
import org.rut.util.algorithm.SortUtil; 2~)q080jh  
^.[+)0I  
/** Iy2AJ|d.  
* @author treeroot jYh.$g<`0+  
* @since 2006-2-2 AVp"<Uv  
* @version 1.0 VKr oikz@]  
*/ } d7o-  
public class ImprovedQuickSort implements SortUtil.Sort { /j:-GJb*!u  
s=XqI@  
private static int MAX_STACK_SIZE=4096; V/8yW3]Xy  
private static int THRESHOLD=10; ."j*4  
/* (non-Javadoc) 8 =3$U+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rgu7g  
*/ 6 wD  
public void sort(int[] data) { c`V~?]I>  
int[] stack=new int[MAX_STACK_SIZE]; 68!=`49r>  
4hV~ ir  
int top=-1; CHM+@lD  
int pivot; .7H* F9  
int pivotIndex,l,r; BeM|1pe.  
m6 a @Y<  
stack[++top]=0; ;4(FS  
stack[++top]=data.length-1; Q#I?nBin  
RTYhgq  
while(top>0){ }x:nhy`  
int j=stack[top--]; J]Qbg7|  
int i=stack[top--]; btB> -pT  
+|Qe/8Q  
pivotIndex=(i+j)/2; G;bE_O  
pivot=data[pivotIndex]; $@L}/MO  
zC$(/nZ  
SortUtil.swap(data,pivotIndex,j); ZSW`/}Dp;  
r/6h}  
file://partition %-[U;pJe;  
l=i-1; rKWkT"  
r=j; lmr:PX  
do{ n&}ILLc  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 0t}&32lL&  
SortUtil.swap(data,l,r); ' |K408i   
} }Z\PE0  
while(l SortUtil.swap(data,l,r); u:&Lf  
SortUtil.swap(data,l,j); NpYzN|W:  
fmq9u(!R  
if((l-i)>THRESHOLD){ S%m$LM]NCg  
stack[++top]=i; `}f wR  
stack[++top]=l-1; g"L$}#iTsl  
} +tPqU6  
if((j-l)>THRESHOLD){ Gd%E337d  
stack[++top]=l+1; \py \rI  
stack[++top]=j; WT>2eMK[  
} xA2 "i2k9  
[D%5Fh\0  
} + %07J6  
file://new InsertSort().sort(data); o@KK/f  
insertSort(data); weky 5(:  
} {z/Y~rf  
/** *_7%n-k  
* @param data V}kQXz"9  
*/ &?#G)suP  
private void insertSort(int[] data) { qA6;Q$  
int temp; /^<Uy3F[p  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <)\  
} v5;V$EGD&  
} WD7IF+v  
} mew,S)dq!  
yy%'9E ldc  
} Y[ciT)  
93*MY7j}  
归并排序: x4C}AyR  
E9IU,P6a  
package org.rut.util.algorithm.support; *Jy'3o  
j%m9y_rg}  
import org.rut.util.algorithm.SortUtil; x$;I E  
S_VZ^1X]  
/** $ &Ntdn  
* @author treeroot +I {ZW}rA  
* @since 2006-2-2 ~<?+(V^D  
* @version 1.0 ,MxTT!9Su  
*/ $6ev K~  
public class MergeSort implements SortUtil.Sort{ 1webk;IM  
|KHaL?  
/* (non-Javadoc) 5mxYzu;#]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a$*)d($  
*/ &]'{N69@d?  
public void sort(int[] data) { +y$%S4>0tp  
int[] temp=new int[data.length]; x9s 7:F  
mergeSort(data,temp,0,data.length-1); (|EnRk-E  
} {WE1^&Vk-}  
NYoh6AR  
private void mergeSort(int[] data,int[] temp,int l,int r){ PE~umY]  
int mid=(l+r)/2; XvU^DEfW  
if(l==r) return ; 0GtL6M@pP  
mergeSort(data,temp,l,mid); \<}4D\qz  
mergeSort(data,temp,mid+1,r); avmuI^LLs  
for(int i=l;i<=r;i++){ D+Ke)-/  
temp=data; ' DZYN {}  
} xpWx6  
int i1=l; O]\6Pv@N  
int i2=mid+1; mUmU_L u8  
for(int cur=l;cur<=r;cur++){ 3++}4%w  
if(i1==mid+1) 4;]<#u  
data[cur]=temp[i2++]; =ZE]jmD4P  
else if(i2>r) /!l$Y?  
data[cur]=temp[i1++]; <QlpIgr  
else if(temp[i1] data[cur]=temp[i1++]; `K,{Y_  
else q`HuVilNH  
data[cur]=temp[i2++]; EqN<""2  
} 9w^lRbn  
} h%9>js^~  
cjf 8N:4N0  
} wx a?.  
MM}lW-q;  
改进后的归并排序: Vq'\`$_  
L\cd=&b`  
package org.rut.util.algorithm.support; 77FI&*q  
#H'j;=]:  
import org.rut.util.algorithm.SortUtil; q&/<~RC*  
emhI1 *}  
/** Tz\ PQ)!  
* @author treeroot a'T8U1  
* @since 2006-2-2 #Tz$ona  
* @version 1.0 qXOWCYqs  
*/ @%(Vi!Cv"R  
public class ImprovedMergeSort implements SortUtil.Sort { "!ZQ`yl  
+3a} ~pW  
private static final int THRESHOLD = 10; <G9HVMiP  
:y/1Jf'2f  
/* e\0vphS6  
* (non-Javadoc) scf.> K2  
* eb6Ux  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <G};`}$a  
*/  ;Y6XX_  
public void sort(int[] data) { dRdI('  
int[] temp=new int[data.length]; 6:fHPlqW  
mergeSort(data,temp,0,data.length-1); iyA=d{S;V  
} \dm5Em/  
oO0dN1/  
private void mergeSort(int[] data, int[] temp, int l, int r) { '|I8byiK  
int i, j, k; q7}rD$  
int mid = (l + r) / 2; RP@U0o  
if (l == r) Y FJw<5&  
return; .wU0F  
if ((mid - l) >= THRESHOLD) SmpYH@  
mergeSort(data, temp, l, mid); &$$o=Yg,  
else _>8rTk`/h  
insertSort(data, l, mid - l + 1); j8cIpbp8x  
if ((r - mid) > THRESHOLD) WE{fu{x  
mergeSort(data, temp, mid + 1, r); m4 k:uk7N  
else Fb!Ew`;QT  
insertSort(data, mid + 1, r - mid); 5NR@<FE  
}508wwv  
for (i = l; i <= mid; i++) { z4qc)- {L  
temp = data; `!udU,|N  
} oe'f?IY  
for (j = 1; j <= r - mid; j++) { ){nOM$W  
temp[r - j + 1] = data[j + mid]; !K8Kw W|X  
} `WUyffS/!  
int a = temp[l]; o2 ;  
int b = temp[r]; r|_@S[hZg  
for (i = l, j = r, k = l; k <= r; k++) { O .ESI  
if (a < b) { "1l$]= C*  
data[k] = temp[i++]; Ybkydc  
a = temp; #n7F7X  
} else { 2q NA\-0i>  
data[k] = temp[j--]; =*5< w  
b = temp[j]; ^ Fnag]qQ  
} th1;Ym+Ze  
} 57K\sT4[  
} }Q?a6(4  
VnYcqeCm  
/** \ xJ_ )r  
* @param data 68UfuC  
* @param l Tc.QzD\  
* @param i *)(S}D\94  
*/ k-N}tk/5  
private void insertSort(int[] data, int start, int len) { i91 =h   
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); '5m4kDs  
} 'ln o#  
} P;G]qV%  
} 2<T/N  
} [ [#R ry  
`-!kqJ  
堆排序: s&4&\Aq}x#  
 Zsn@O2  
package org.rut.util.algorithm.support; a&Z,~Vp  
@__m>8wn  
import org.rut.util.algorithm.SortUtil; B'e@RhU;  
=.qX u+  
/** ? Rk[P cX<  
* @author treeroot *3KSOcQ  
* @since 2006-2-2 ?Dl;DE1  
* @version 1.0 aX2N Qq>s  
*/ 95E #  
public class HeapSort implements SortUtil.Sort{ z1^3~U$}  
PfsUe,*  
/* (non-Javadoc) AQ?;UDqU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8 (ot<3(D  
*/ kWacc&*|  
public void sort(int[] data) { `TYC]9  
MaxHeap h=new MaxHeap(); -<ome~|  
h.init(data); ifNyVE Hy  
for(int i=0;i h.remove(); x_x_TEyyh  
System.arraycopy(h.queue,1,data,0,data.length); 4H^ACw  
} *b_Iby-ZD  
ULhXyItL  
private static class MaxHeap{ E4'z  
C+t0Zen  
void init(int[] data){ *8_Dn}u?Jx  
this.queue=new int[data.length+1]; A0Q`Aqs  
for(int i=0;i queue[++size]=data; }Q*J!OH  
fixUp(size); Uq @].3nf  
} !x:{"  
} E+|K3EJ  
%gQUog  
private int size=0; 1KY0hAx  
C4qK52'2s  
private int[] queue; T`MM<+^G  
@lX%Fix9  
public int get() { j{'_sI{{  
return queue[1]; ;5.<M<PH  
} EP"Z58&$R  
yMu G? x+  
public void remove() { |h%HUau  
SortUtil.swap(queue,1,size--); >tPf.xI|l  
fixDown(1); XjCx`bX^<  
} zRd.!Rv  
file://fixdown }K@m4`T  
private void fixDown(int k) { pKpB  
int j; YK[2KTlo  
while ((j = k << 1) <= size) { #t;]s<  
if (j < size %26amp;%26amp; queue[j] j++; =|``d-  
if (queue[k]>queue[j]) file://不用交换 |5%T)  
break; ke!  
SortUtil.swap(queue,j,k); + kT ]qH  
k = j; iqdU?&.;  
} N Uv Vhy]{  
} =4'V}p  
private void fixUp(int k) { J}[[tl  
while (k > 1) { f^*Yqa  
int j = k >> 1; ]{# =WTp]  
if (queue[j]>queue[k]) i}zz!dJTE  
break; Xp9I3nd|  
SortUtil.swap(queue,j,k); kS &>g  
k = j; Hi=</ Wy;  
} ZfX$q\7  
} 37kVJQcA1  
LEeA ,Y  
} Y2XxfZ j  
eUZk|be  
} J'sa{/ #  
EpNN!s=Q  
SortUtil: Ex zB{ "  
$/C1s"C@O  
package org.rut.util.algorithm; @XolFOL"f"  
,dTmI{@O  
import org.rut.util.algorithm.support.BubbleSort; H7.l)'  
import org.rut.util.algorithm.support.HeapSort; [|1I.AZ{  
import org.rut.util.algorithm.support.ImprovedMergeSort; Li} 5aK  
import org.rut.util.algorithm.support.ImprovedQuickSort; k9OGnCW\  
import org.rut.util.algorithm.support.InsertSort; wEM=Tr/h  
import org.rut.util.algorithm.support.MergeSort; f$\ O:E=  
import org.rut.util.algorithm.support.QuickSort; #"KC29!Yj  
import org.rut.util.algorithm.support.SelectionSort; Sx QA*}N  
import org.rut.util.algorithm.support.ShellSort; -JF^`hBD-  
;veD?|  
/** `j@1]%&z  
* @author treeroot Ms,MXJtH  
* @since 2006-2-2 64mEZ_kG,  
* @version 1.0 5 | ,b  
*/ x1#>"z7  
public class SortUtil { X.;VZwT+  
public final static int INSERT = 1; P'OvwA  
public final static int BUBBLE = 2; =xIZJ8e  
public final static int SELECTION = 3; jw=PeT|  
public final static int SHELL = 4; p__wBUB  
public final static int QUICK = 5; 1J"9Y81   
public final static int IMPROVED_QUICK = 6; /Yp#`}Ii  
public final static int MERGE = 7; y`buY+5l  
public final static int IMPROVED_MERGE = 8; 8!Wh`n<  
public final static int HEAP = 9; |EX=Rj*  
NT*r7_e  
public static void sort(int[] data) { #O}}pF  
sort(data, IMPROVED_QUICK); H( i   
} aqI"4v]~b  
private static String[] name={ D?1fY!C:r  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" WM ?a1j  
}; Lcpe*C x-  
? /z[Jx.  
private static Sort[] impl=new Sort[]{ zVw5(Tc  
new InsertSort(), rnj$u-8  
new BubbleSort(), - C q;  
new SelectionSort(), D1xGUz2r  
new ShellSort(), YP_L~zZ  
new QuickSort(), K'r;#I|"J  
new ImprovedQuickSort(), q%d G>!  
new MergeSort(), ~\CS%thX  
new ImprovedMergeSort(), h7"U1'b  
new HeapSort() {s0%XG1$  
}; Y)X7*iTi'j  
Uv *A a7M  
public static String toString(int algorithm){ mfQ#n!{ZH  
return name[algorithm-1]; 6^] |  
} oM~y8O  
*tF~CG$r  
public static void sort(int[] data, int algorithm) { l}z<q  
impl[algorithm-1].sort(data); ]WDmx$"&e  
} :uo1QavO@,  
YK3>M"58  
public static interface Sort { o?Hfxp0}  
public void sort(int[] data); lWId 0eNS  
} }R['Zoh4I  
H>EM3cFU  
public static void swap(int[] data, int i, int j) { K4!-%d$  
int temp = data; }~I!'J#)  
data = data[j];  h$l/wn  
data[j] = temp; f)/Z7*Z  
} C:J;'[,S  
} .Ix3wR9  
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