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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。 ]b> pI;  
插入排序: wz h.$?~  
- {0g#G  
package org.rut.util.algorithm.support; 4Mi~1iZj  
YlrB@mE0n$  
import org.rut.util.algorithm.SortUtil; ]r!QmWw~V  
/** 6A.P6DW  
* @author treeroot q P'[&h5Y  
* @since 2006-2-2 Rh[Ibm56  
* @version 1.0 vn``0!FX  
*/ >GmN~"iJ  
public class InsertSort implements SortUtil.Sort{ 4 ]sCr+   
&/iFnYVhy  
/* (non-Javadoc) >2u y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %Sul4: D#  
*/ Nkx0CG*  
public void sort(int[] data) { *<UGgnmLE  
int temp; I ld7}R  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); g1ytT%]  
} dGU8+)2cn  
} K0v.3  
} ?3Pazc]+|  
JA< :K0  
} jAZ >mo[  
1g~y]iQ  
冒泡排序: A*Rn<{U  
o_(0  
package org.rut.util.algorithm.support; 7pP+5&*  
95[wM6?J  
import org.rut.util.algorithm.SortUtil; bb}?h]a   
IqNpLh|[  
/** rpSr^slr  
* @author treeroot k8 u%$G  
* @since 2006-2-2 m9woredS,  
* @version 1.0 >gnF]<  
*/ qfa}3k8et  
public class BubbleSort implements SortUtil.Sort{ ~o i)Lf1  
l0:5q?g  
/* (non-Javadoc) ld95[cTP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1 #q^uqO0  
*/ 5N1}Ns  
public void sort(int[] data) { aLYLd/ KV  
int temp; 'g~@"9'oe  
for(int i=0;i for(int j=data.length-1;j>i;j--){   Y<aO  
if(data[j] SortUtil.swap(data,j,j-1); o)p[ C   
} gJKKR]4*  
} K?[)E3  
} ^&-a/'D$,  
} (_ U^  
-,|ha>r  
} [g`,AmR\!  
7=vYO|a/4  
选择排序: W_%W%i|  
^4 8\>-Q\  
package org.rut.util.algorithm.support; e"~)Utk  
gJk[Ja  
import org.rut.util.algorithm.SortUtil; q1w|'V  
,z[(k"  
/** t$5jx  
* @author treeroot ZtR&wk  
* @since 2006-2-2 26 ?23J ;  
* @version 1.0 Dp`HeSKU^  
*/  $WR?  
public class SelectionSort implements SortUtil.Sort { ~{P:sjsU  
rd" &QB{  
/* @701S(0 '7  
* (non-Javadoc) {"jd_b&  
* gApz:K[l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _YLUS$Zw  
*/ !*_K.1'  
public void sort(int[] data) { YmgCl!r@  
int temp; @mNJ=mEV  
for (int i = 0; i < data.length; i++) { 9x[ U$B  
int lowIndex = i; +6oG@  
for (int j = data.length - 1; j > i; j--) { jq[x DwPG  
if (data[j] < data[lowIndex]) { ;NP[_2|-,  
lowIndex = j; R*\~k%Z  
} r :NH6tAL  
} {_(+>v"eJ  
SortUtil.swap(data,i,lowIndex); 4w;~4#ZPp  
} lLMPw}r<  
} lJ&y&N<O  
O|7yP30?M  
} R6<4"?*r  
Cg3ODfe  
Shell排序: H-2_j  
9n 6fXOC  
package org.rut.util.algorithm.support; 3q?5OL^$  
)88nMH-  
import org.rut.util.algorithm.SortUtil; vhpvO >Q  
-dG,*0 >  
/** $rB6<  
* @author treeroot )2V@p~k?  
* @since 2006-2-2 iadkH]w  
* @version 1.0 Z2bUs!0  
*/ R8 jovr  
public class ShellSort implements SortUtil.Sort{ |xeE3,8  
#w*"qn#2Uz  
/* (non-Javadoc) :,^>d3k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GS4_jvD-  
*/ C_Gzv'C"L  
public void sort(int[] data) { e9:P9Di(b  
for(int i=data.length/2;i>2;i/=2){ ;UpJ=?W  
for(int j=0;j insertSort(data,j,i); wS%zWdsz  
} 02pplDFsM  
} hfv%,,e  
insertSort(data,0,1); /WYh[XKe  
} dhtb?n{  
OpQ8\[X+  
/** KuXkI;63J>  
* @param data H`el#tt_  
* @param j NnOI:X {  
* @param i gc,Ps  
*/ 8^vArS;  
private void insertSort(int[] data, int start, int inc) { P#*n3&Uu  
int temp; *Ru2:}?MpS  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); %E.S[cf%8&  
} gt@SuX!@{^  
} Q1T@oxV  
} jI0]LD1k  
H#Q;"r3  
} M BVOfEMj  
|7c `(.  
快速排序: @c]Xh:I  
*/_@a?  
package org.rut.util.algorithm.support; { i;6vRr  
7"K^H]6u30  
import org.rut.util.algorithm.SortUtil; z 6cYC,  
I N_gF_@%  
/** C{&)(#*L  
* @author treeroot K'Spbn!nC  
* @since 2006-2-2 Ue!Q."  
* @version 1.0 v20~^gKo=m  
*/ P7r4ePtLk{  
public class QuickSort implements SortUtil.Sort{ =~J fVozU  
JO}?.4B  
/* (non-Javadoc) iaRR5D-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RUX8qT(Z  
*/ t3>$|}O]t  
public void sort(int[] data) { =:/>6 H1x  
quickSort(data,0,data.length-1); L$hc,  
} 7P*Z0%Q  
private void quickSort(int[] data,int i,int j){ mPG7Zy$z  
int pivotIndex=(i+j)/2; lD3)TAW@o  
file://swap _z]v<,=3M  
SortUtil.swap(data,pivotIndex,j); I4~^TrznRa  
}e2F{pQ  
int k=partition(data,i-1,j,data[j]); WsB3SFNG  
SortUtil.swap(data,k,j); ^1VbH3M  
if((k-i)>1) quickSort(data,i,k-1); e1uMR-Q  
if((j-k)>1) quickSort(data,k+1,j); Pb4q`!  
]3+``vL  
} 5Eal1Qu  
/** }p*?1N  
* @param data <4f,G]UH_  
* @param i @woC8X  
* @param j #_fY4vEO  
* @return ?gG,t4D  
*/ MD4\QNUa)*  
private int partition(int[] data, int l, int r,int pivot) { ^@"c`  
do{ [+gzdLad  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); l&|)O6N  
SortUtil.swap(data,l,r); &k+*3.X  
} -[$&s FD  
while(l SortUtil.swap(data,l,r); ohsH2]C  
return l; g ;LVECk  
} )!a$#"'  
^aptLJF  
} f3t. T=S  
H%C\Uz"o  
改进后的快速排序: yQwVQUW8B  
waQtr,m)  
package org.rut.util.algorithm.support; PkJcd->  
?l 9=$'  
import org.rut.util.algorithm.SortUtil; lY,/ W  
T.2ZBG ~|[  
/** SSQT;>  
* @author treeroot i@6wO?Tv  
* @since 2006-2-2 $3 vhddO  
* @version 1.0 >%h7dC3h  
*/ R,b59,&3/  
public class ImprovedQuickSort implements SortUtil.Sort { ymkR!  
o8tS  
private static int MAX_STACK_SIZE=4096; 0[9I0YBJ  
private static int THRESHOLD=10; qguVaV4Y  
/* (non-Javadoc) -#%X3F7/w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PGY9*0n  
*/ }$:#+ (17  
public void sort(int[] data) { pyF5S,c  
int[] stack=new int[MAX_STACK_SIZE]; XN(tcdCG  
>2Ca5C  
int top=-1; \k4pK &b  
int pivot; |z+9km7,  
int pivotIndex,l,r; A6i et~h[  
[Auc*@  
stack[++top]=0; *]2R.u  
stack[++top]=data.length-1; %A2`&:ip  
x< S\D&  
while(top>0){ DB~MYOX~  
int j=stack[top--]; n.Vtc-yZU  
int i=stack[top--]; "*bk{)dz}  
bP03G =`6w  
pivotIndex=(i+j)/2; >b43%^yii  
pivot=data[pivotIndex]; n$ dw<y  
7V 'Le2T'  
SortUtil.swap(data,pivotIndex,j); 6V P)$h8  
ZOn_dYjC  
file://partition phS>T  
l=i-1; 3SFg#  
r=j; xKb"p4k9d  
do{ LfllO  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); (Y)!"_|  
SortUtil.swap(data,l,r); Y'JL(~|  
} `oVB!eapl  
while(l SortUtil.swap(data,l,r); Rn;VP:HM  
SortUtil.swap(data,l,j); pw;r 25   
f8#*mQ  
if((l-i)>THRESHOLD){ $`v+4]   
stack[++top]=i; :o l6%Z's  
stack[++top]=l-1; O4N-_Kfp/  
} y7La_FPrl  
if((j-l)>THRESHOLD){ Wxs>osq  
stack[++top]=l+1; uOFnCy 4  
stack[++top]=j; ArL-rJ{}  
} V4EM5 Z\k  
9t}J|09i  
} A!4VjE>  
file://new InsertSort().sort(data); *;P2+cE>H3  
insertSort(data); /.2qWQH  
} 9fMSAB+c%  
/** .?Auh2nr  
* @param data .<dOED{v  
*/ /sV?JV[t  
private void insertSort(int[] data) { @`Wt4<  
int temp; 6W:1>,xS  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); itHM7d  
} oR#my ^  
} #Z!#;%S  
} qPUA!-'  
yXrd2?Rq@  
} f,JX"  
P>fKX2eQ-  
归并排序: Wz5=(<{S  
-_HRqw,Z0  
package org.rut.util.algorithm.support; .OV-`TNWj  
,m3":{G:t.  
import org.rut.util.algorithm.SortUtil; mZE8.`  
D>Ua#<52q  
/** |mvM@V;^8{  
* @author treeroot UFIjW[h  
* @since 2006-2-2 Uh%6LPg^  
* @version 1.0 M=6G:HHY  
*/ N;g$)zCV1  
public class MergeSort implements SortUtil.Sort{ 'QnW9EHLF  
|e+aZ%g  
/* (non-Javadoc) Y!it!9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Pr2;Kp  
*/ I5Q~T5Ar  
public void sort(int[] data) { 5v+L';wx[T  
int[] temp=new int[data.length]; ?eVj8 $BQo  
mergeSort(data,temp,0,data.length-1); %!yxC  
} D$mf5G &  
DUhT>,~]  
private void mergeSort(int[] data,int[] temp,int l,int r){ ",QPb3  
int mid=(l+r)/2; >HX)MwAP  
if(l==r) return ; 3AvcJ1  
mergeSort(data,temp,l,mid); fRFYJFc n  
mergeSort(data,temp,mid+1,r); "5h_8k~sQ  
for(int i=l;i<=r;i++){ @ce3%`c_  
temp=data; 9':/Sab:7v  
} oAaf)?8  
int i1=l; H<XlUCr_~+  
int i2=mid+1; E)Srj~$d  
for(int cur=l;cur<=r;cur++){ Z>&K&ttJ  
if(i1==mid+1) 3r`<(%\  
data[cur]=temp[i2++]; .5N Zf4:C  
else if(i2>r) SKW;MVC  
data[cur]=temp[i1++]; {<r`5  
else if(temp[i1] data[cur]=temp[i1++]; GeVc\$K-  
else @~hz_Nm@8  
data[cur]=temp[i2++]; Q8 4t9b  
} %^T!@uZr  
} rX:1_q`xA  
38"cbHE3  
} n{3| E3  
L*v93;|s  
改进后的归并排序: \wFhTJY  
C-&#r."L  
package org.rut.util.algorithm.support; ze ?CoDx2  
tbY  SK  
import org.rut.util.algorithm.SortUtil; =:;YTie  
xp(mB7;:  
/** HI z9s4Y_  
* @author treeroot $CM4&{B"i  
* @since 2006-2-2 [C2kK *JZ  
* @version 1.0 }pt-q[s>  
*/ AsD1-$  
public class ImprovedMergeSort implements SortUtil.Sort { $=lJG(2%  
"`[$&:~  
private static final int THRESHOLD = 10; O8iu+}]/6  
1aVgwAI  
/* ThbP;CzI#  
* (non-Javadoc) (%.</|u  
* EtJD'&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GgT=t)}wu  
*/ 48;~bVr}  
public void sort(int[] data) { 6S)$3Is  
int[] temp=new int[data.length]; `TOX1cmw  
mergeSort(data,temp,0,data.length-1); )S#j.8P'B  
} coSTZ&0  
FRc  |D  
private void mergeSort(int[] data, int[] temp, int l, int r) { y. T ct.  
int i, j, k; > e;]mU`,  
int mid = (l + r) / 2; +B](5z4  
if (l == r) "\}21B~{7'  
return; ]gEu.Nth`  
if ((mid - l) >= THRESHOLD) ipfm'aQ  
mergeSort(data, temp, l, mid); T4l-sJ'|  
else k-io$  
insertSort(data, l, mid - l + 1); $,g 3*A  
if ((r - mid) > THRESHOLD) BSjbnnW}"  
mergeSort(data, temp, mid + 1, r); 8Er[M  
else 7G?Ia%u  
insertSort(data, mid + 1, r - mid); y{:]sHyG  
PMD,8]|  
for (i = l; i <= mid; i++) { X E!2Q7Q9  
temp = data; dy'X<o^?W  
} P"2Q&M_ /  
for (j = 1; j <= r - mid; j++) { .&Y,D-h}7|  
temp[r - j + 1] = data[j + mid]; p_A5C?&  
} 4{g:^?1=  
int a = temp[l]; /E; ;j9  
int b = temp[r]; Wn2Ny jX  
for (i = l, j = r, k = l; k <= r; k++) { ]j72P  
if (a < b) { 2lX[hFa5  
data[k] = temp[i++]; vI4%d,  
a = temp; 'M47'{7T  
} else { sb8z_3   
data[k] = temp[j--]; <XU8a:w'T  
b = temp[j]; h5<T.vV  
} dCW0^k  
} >N :|Km\  
} \,$r,6-g  
nomu$|I  
/** InAU\! ew  
* @param data yp( ?1  
* @param l b/T20F{W\o  
* @param i i0i.sizu  
*/ 5?<|3  
private void insertSort(int[] data, int start, int len) { h4J{jh.  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); FZM ]o  
} "cIGNTLFA  
} ?3.(Vqwog  
} ^A:!ni@3  
} [_B+DD=}  
8L%%eM_O  
堆排序: 2nG{>,#C:O  
Sn_z  
package org.rut.util.algorithm.support; i=,B88ko  
~ra#UG\Y8  
import org.rut.util.algorithm.SortUtil; 6RR4L^(m  
e);bF>.~  
/** ,Zf :R  
* @author treeroot  O6M}W_  
* @since 2006-2-2 > u'/$ k  
* @version 1.0 > #Grf)@"6  
*/ azz#@f1  
public class HeapSort implements SortUtil.Sort{ GGFar\ EzW  
DQL06`pX/  
/* (non-Javadoc) KIXwx98  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o06A=4I  
*/ 'vqj5YTj  
public void sort(int[] data) { AH"g^ gw~T  
MaxHeap h=new MaxHeap(); XhJP87A  
h.init(data); ]1YYrgi7  
for(int i=0;i h.remove(); gOBj0P8s|}  
System.arraycopy(h.queue,1,data,0,data.length); ;m2"cL>{l  
} }I` ku.@5  
J)#5 9a  
private static class MaxHeap{ :)^# xE(  
&>+I7Ts]  
void init(int[] data){ 6qz!M  
this.queue=new int[data.length+1]; ?NL&x  
for(int i=0;i queue[++size]=data; EF*oPn0|  
fixUp(size); X_^_r{  
} luP'JUq  
} )]0[`iLe  
]4LT#  
private int size=0; Yc. ~qmG/z  
-eSPoZ  
private int[] queue; mGM inzf  
m!FM+kge  
public int get() { iXr`0V   
return queue[1]; 2@=cqD7x  
} <;TP@-a  
;XKo44%  
public void remove() { pqGf@24c<  
SortUtil.swap(queue,1,size--); c_D,MW\IC  
fixDown(1); oHc-0$eMKY  
} c(_oK ?  
file://fixdown os "[Iji  
private void fixDown(int k) { ?%8})^Dd>4  
int j; Q(!}t"u  
while ((j = k << 1) <= size) { Kq@m?h  
if (j < size %26amp;%26amp; queue[j] j++; [Ls2k&)0  
if (queue[k]>queue[j]) file://不用交换 7DC0W|Fe  
break; 2>_brz|7:|  
SortUtil.swap(queue,j,k); IlC:dA  
k = j; 32)&;  
} \$$b",2 h  
} F$sF 'cw  
private void fixUp(int k) { I;kUG_c(4  
while (k > 1) { P?3YHa^up  
int j = k >> 1; V5(tf'  
if (queue[j]>queue[k]) 5~kW-x  
break; `o^;fcnG  
SortUtil.swap(queue,j,k); 2yCd:wg  
k = j; T9XW%/n  
} J1u@A$4l?  
} f)ucC$1=  
~ (l2%(3G  
} CHdet(_=v  
r['=a/.C  
} F] dd>#  
yv#c =v|  
SortUtil: hq&  
j 44bF/  
package org.rut.util.algorithm; nIN%<3U2  
YiQeI|{oN  
import org.rut.util.algorithm.support.BubbleSort; .T62aJ   
import org.rut.util.algorithm.support.HeapSort; X T)hPwg.  
import org.rut.util.algorithm.support.ImprovedMergeSort; @88z{  
import org.rut.util.algorithm.support.ImprovedQuickSort; cQ8$,fo  
import org.rut.util.algorithm.support.InsertSort; _n Iqy&<  
import org.rut.util.algorithm.support.MergeSort; 4LB9w 21  
import org.rut.util.algorithm.support.QuickSort; f@xfb ie !  
import org.rut.util.algorithm.support.SelectionSort; k1LtqV  
import org.rut.util.algorithm.support.ShellSort; 4 L~;>]7  
M#8Ao4 T  
/** X~Rk ,d3  
* @author treeroot !=q:> }g  
* @since 2006-2-2 '#An+;x{  
* @version 1.0 ;&t1FH#=  
*/ _]PfeCn:j  
public class SortUtil { YVg}q#  
public final static int INSERT = 1; Dry;$C}P  
public final static int BUBBLE = 2; i1_>>49*  
public final static int SELECTION = 3; Kj1#R  
public final static int SHELL = 4; D0E"YEo\nv  
public final static int QUICK = 5; 6UzT]"LR;  
public final static int IMPROVED_QUICK = 6;  >Wr   
public final static int MERGE = 7; :v WYI I7  
public final static int IMPROVED_MERGE = 8; @D=2Er\  
public final static int HEAP = 9; Gad2EEZ%0  
[&O:qaD^  
public static void sort(int[] data) { a*n%SUP  
sort(data, IMPROVED_QUICK); :x*|lz[  
} ]rX?n  
private static String[] name={ }9+1<mT9a/  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ]Buk9LTe  
}; *l'$pJ X  
/cg]wG!n8  
private static Sort[] impl=new Sort[]{ $e t :  
new InsertSort(), @,>=X:7  
new BubbleSort(), ~|B!. +  
new SelectionSort(), &T{B~i3w8  
new ShellSort(), R82Zr@_  
new QuickSort(), *O}'2Ht6\  
new ImprovedQuickSort(), M]/wei"X  
new MergeSort(), .V)2Tz  
new ImprovedMergeSort(), G4J6  
new HeapSort() _ry En  
};  !k??Kj  
DRg ~HT  
public static String toString(int algorithm){ Tdmo'"m8z_  
return name[algorithm-1]; ,%b1 ]zZQ  
} (.nJT"&  
4kY{X%9  
public static void sort(int[] data, int algorithm) { e#eO`bT  
impl[algorithm-1].sort(data); ^N}~U5  
} <+1w'-  
ZD] '$  
public static interface Sort { q$2taG}  
public void sort(int[] data); *,*:6^t  
} -Fw4;&>  
b Ho?Rw!.  
public static void swap(int[] data, int i, int j) { RKJWLofX&  
int temp = data; &=yqWW?  
data = data[j]; eiSO7cGy  
data[j] = temp; d8q$&(]<  
} fjZveH0  
} [j+0EVwB  
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