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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。 Q&%gpa ).W  
插入排序: ;i+(Q%LO  
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package org.rut.util.algorithm.support; 3O2vY1Y2  
%$Q!'+YW  
import org.rut.util.algorithm.SortUtil; /BF7N3  
/** 4"{g{8  
* @author treeroot {4p7r7n'  
* @since 2006-2-2 $U. 2"  
* @version 1.0 vt5>>rl  
*/ !y!s/i&P%  
public class InsertSort implements SortUtil.Sort{ 3=UufI  
iU~d2R+  
/* (non-Javadoc) YxA nh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R_Bf JD.  
*/ ]#q$i[Y  
public void sort(int[] data) { Aqg$q* Y  
int temp; *]kE3  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); r.:f.AY{  
} [`KQ \4u  
} tEibxE  
} 09G]t1!,  
 TLVfu4  
} hKsx7`[  
pH@yE Vf  
冒泡排序: 6+PP(>em  
dPgA~~  
package org.rut.util.algorithm.support; /\1Q :B3W  
"e29j'u!*  
import org.rut.util.algorithm.SortUtil; wc~9zh  
E!I4I'  
/** A?)(^  
* @author treeroot nRX<$OzTV  
* @since 2006-2-2 8@T0]vH&  
* @version 1.0 b~8&P_  
*/ CyB1`&G>  
public class BubbleSort implements SortUtil.Sort{ :b#5 cMUe  
~n/:a  
/* (non-Javadoc) *y>|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F{}:e QD  
*/ bs?4|#[K  
public void sort(int[] data) { *S Z]xrs  
int temp; C{ Z*5)  
for(int i=0;i for(int j=data.length-1;j>i;j--){ yG>sBc  
if(data[j] SortUtil.swap(data,j,j-1); $ WWi2cI;  
} J=n^&y  
} sn@)L~$V  
} 9@*4^Ks p  
} -OfAl~ 4  
2Paw*"U  
} #KtV4)(  
^AUQsRA7PZ  
选择排序: #`"B YFV[E  
0XL[4[LdA  
package org.rut.util.algorithm.support; \nQEvcH  
mFIIqkUAL  
import org.rut.util.algorithm.SortUtil; v\kd78,  
Io_7  
/** Z \ -  
* @author treeroot !}xRwkN  
* @since 2006-2-2 D[Ld=e8t  
* @version 1.0 hrOp9|!m  
*/ 2L1Azx  
public class SelectionSort implements SortUtil.Sort { \l 3M\$oS>  
`k08M)  
/* $5>x)jr:w+  
* (non-Javadoc) !|Y&h0e  
* bW'Y8ok[v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6M8(KN^  
*/ a6o p  
public void sort(int[] data) { A?c?(~9O  
int temp; k_%maJkXp  
for (int i = 0; i < data.length; i++) {  6AmFl<  
int lowIndex = i; HMR!XF&JjC  
for (int j = data.length - 1; j > i; j--) { 8ZO~=e  
if (data[j] < data[lowIndex]) { s|"4!{It  
lowIndex = j; $I /RN  
} + V-&?E(  
}  HYg7B  
SortUtil.swap(data,i,lowIndex); K%vGfQ8Er-  
} UAdj [m61  
} @{880 5Dp  
sM%.=~AN  
} cACnBgLl  
sZU Ao&  
Shell排序: JhB$s  
?T_hK  
package org.rut.util.algorithm.support; ^#2Y4[@  
#Cz:l|\ i  
import org.rut.util.algorithm.SortUtil; VH.}}RS%  
#DH eEE  
/** niM(0p  
* @author treeroot 2?owXcbx  
* @since 2006-2-2 oga0h'  
* @version 1.0 5wMEp" YHE  
*/ c1_?Z  
public class ShellSort implements SortUtil.Sort{ {*4Z9.2c*  
%w6lNl  
/* (non-Javadoc) e9?y0vT//  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #.\X% !  
*/ N" oJ3-~  
public void sort(int[] data) { %] 7.E  
for(int i=data.length/2;i>2;i/=2){ (%;D& ~%o  
for(int j=0;j insertSort(data,j,i); ]5J*UZ}  
} *yA. D?  
} Bk~M^AK@~  
insertSort(data,0,1); cNqw(\rr  
} :y[tZ&*<_?  
q]t^6m&-  
/** !GVxQll[f  
* @param data h'G8@j;  
* @param j  '+C%]p  
* @param i hn u/  
*/ YyR~pT#ffT  
private void insertSort(int[] data, int start, int inc) { HnfTj5J@  
int temp; OAz -w  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); h%@#jvh?4  
} )F35WP~  
} BLhuYuON  
} KHXnB  
N DV_/BI  
} S>p>$m, Q  
DnPV Tp(>  
快速排序:  /=7[Q  
^zaN?0%S33  
package org.rut.util.algorithm.support; _qqJ>E<0  
.c.#V:XZ#U  
import org.rut.util.algorithm.SortUtil; ;rH@>VrR  
 Z@`HFZJ  
/** E^. =^bR  
* @author treeroot m,]M_y\u  
* @since 2006-2-2 1{S" axSL  
* @version 1.0 V]9 ?9-r  
*/ 3bPvL/\Lb  
public class QuickSort implements SortUtil.Sort{ (wIpq<%  
ouUU(jj02  
/* (non-Javadoc) uJ$!lyJ6L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !xK`:[B  
*/ hY Nb9^  
public void sort(int[] data) { ysiBru[u  
quickSort(data,0,data.length-1); D}Lx9cL  
} FeFH_  
private void quickSort(int[] data,int i,int j){ #VEHyz6P  
int pivotIndex=(i+j)/2; I2'UC) 0  
file://swap +<H)DPG<  
SortUtil.swap(data,pivotIndex,j); -.E<~(fad  
dGzZ_Vf  
int k=partition(data,i-1,j,data[j]); izi=`;=D^  
SortUtil.swap(data,k,j); zKk2>.  
if((k-i)>1) quickSort(data,i,k-1); g< {jgF  
if((j-k)>1) quickSort(data,k+1,j); Io&F0~Z;;(  
w#,C{6  
} rB:W\5~7  
/** f"5vpU^5*  
* @param data [nlW}1)46  
* @param i YX_p3  
* @param j wy$9QN  
* @return ,#r>#fi0  
*/ ""ICdZ_A  
private int partition(int[] data, int l, int r,int pivot) { # -Ts]4v  
do{ UpS`KgF"v  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); >2~q{e  
SortUtil.swap(data,l,r); ZOG6  
} ]f q.r  
while(l SortUtil.swap(data,l,r); pemb2HQ'4j  
return l; S0Y$$r  
} 3B|o   
T!)v9L  
} eg-,;X#  
jC<!Ny-$  
改进后的快速排序: {@oYMO~  
kGMI ?  
package org.rut.util.algorithm.support; v >71 ?te  
@D rMaTr  
import org.rut.util.algorithm.SortUtil; iVt6rX  
x,z+l-y  
/** T)]5k3{  
* @author treeroot Pz1pEyuL  
* @since 2006-2-2 ;%AK< RT  
* @version 1.0 xS`>[8?3<T  
*/ ^60BQ{ne  
public class ImprovedQuickSort implements SortUtil.Sort { "el}@  
TCFx+*fBd  
private static int MAX_STACK_SIZE=4096; ^l6q  
private static int THRESHOLD=10; ?y7x#_Exc  
/* (non-Javadoc) 969*mcq'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g~Zel}h#  
*/ ,\f!e#d  
public void sort(int[] data) { ^~2GhveBV  
int[] stack=new int[MAX_STACK_SIZE]; 0t1WvW  
Y`3>i,S6\  
int top=-1; 'k#^Z  
int pivot; ucyz>TL0  
int pivotIndex,l,r; /4]M*ls  
QOkPliX  
stack[++top]=0; -Vk+zEht  
stack[++top]=data.length-1; nqt;Ge M  
A\_cGM2  
while(top>0){ 2hl'mRW  
int j=stack[top--]; _rK}~y=0  
int i=stack[top--]; 8|`4D 'Ln  
qde.;Yv9  
pivotIndex=(i+j)/2; v3Y/D1jd"  
pivot=data[pivotIndex]; *.AokY)_a  
9Bl_t}0  
SortUtil.swap(data,pivotIndex,j); Im1e/F]  
70l"[Y  
file://partition &CFHH"OsT  
l=i-1; 1j<=TWit  
r=j; w9h\J#f  
do{ J A ]s  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #n 7uw  
SortUtil.swap(data,l,r); INsc!xOQ  
} U&|=dH]-  
while(l SortUtil.swap(data,l,r); GM{m(Y  
SortUtil.swap(data,l,j); hV/$6 8A_  
7^h?<X\  
if((l-i)>THRESHOLD){ !L+*.k:  
stack[++top]=i; |Z<NM#1  
stack[++top]=l-1; RiF~-;v&  
} Pm6/sO  
if((j-l)>THRESHOLD){ lN)U8  
stack[++top]=l+1; Aq}]{gfQ1  
stack[++top]=j; _mKO4Atw  
} c.Pyt  
Q d]5e  
} e;R5A6|  
file://new InsertSort().sort(data); B i?DmrH  
insertSort(data); n3-u.Fb  
} PBb@J'b  
/** 1K&z64Q5J  
* @param data [J0L7p*6  
*/ Iw8;",e2  
private void insertSort(int[] data) { 3HC aZ?Ry'  
int temp; v&%GK5j7O  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); W~ XJ']e  
} R}a,.C  
} s"<k) Xi  
} J_OIU#-B  
r@0HqZx`  
} iTi<X|X  
ZJ@M}-4O1  
归并排序: SY_T\ }  
jm'(t=Ze  
package org.rut.util.algorithm.support; cOth q87:  
6$w)"Rq  
import org.rut.util.algorithm.SortUtil; 0n|op:]BHM  
bN@V=C3  
/** 4r`u@  
* @author treeroot l2U"4d!o  
* @since 2006-2-2 9 W> <m[O  
* @version 1.0 |j$&W;yC  
*/ IY?[0S  
public class MergeSort implements SortUtil.Sort{ "?hEGJ;m"  
&F*s.gL  
/* (non-Javadoc) B@` 87  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) abUvU26t  
*/ )V%xbDdS  
public void sort(int[] data) { V}=9S@$o  
int[] temp=new int[data.length]; gYfN ?A*`_  
mergeSort(data,temp,0,data.length-1); v_"p)4&'  
} f@T/^|`mh  
ZFNM>C^  
private void mergeSort(int[] data,int[] temp,int l,int r){ *r$Yv&c,  
int mid=(l+r)/2; k!b\qS~Q  
if(l==r) return ; Mb=vIk{B f  
mergeSort(data,temp,l,mid); &/}]9 #  
mergeSort(data,temp,mid+1,r); Xy:'f".M~\  
for(int i=l;i<=r;i++){ cHs@1R/-s  
temp=data; $R%xeih1fz  
} 2Otd  
int i1=l; W)ihk\E  
int i2=mid+1; 2?58=i%b  
for(int cur=l;cur<=r;cur++){ aErms-~  
if(i1==mid+1) 4<)%Esyb  
data[cur]=temp[i2++]; z;@;jQ7  
else if(i2>r)  pI|Lt  
data[cur]=temp[i1++]; r4k =i4  
else if(temp[i1] data[cur]=temp[i1++]; =0TnH<`  
else mS5'q q;t  
data[cur]=temp[i2++]; :2{6Pa(eg  
} kG/:fP  
} _>%P};G{>  
RrRrB"!8nR  
} N_lQz(nG/2  
j1%o+#df  
改进后的归并排序: d76k1-m\o  
xGCW-YR9  
package org.rut.util.algorithm.support; !*ct3{m  
Lz's!b  
import org.rut.util.algorithm.SortUtil; at]=SA  
>{p&_u.r-  
/** ,y>,?6:>  
* @author treeroot I3]-$  
* @since 2006-2-2 4eK!1|1  
* @version 1.0 F0W4B  
*/ :2iNw>z1  
public class ImprovedMergeSort implements SortUtil.Sort { ~q4KQ&.!  
%bgjJ`  
private static final int THRESHOLD = 10; i,1=5@rw5  
2W:R{dHE  
/* VliX'.-  
* (non-Javadoc) 0B#9CxU%  
* %yX?4T;b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'd4I/  
*/ xDv$z.=Y  
public void sort(int[] data) { i"Hec9Ri  
int[] temp=new int[data.length]; 1Y4=D  
mergeSort(data,temp,0,data.length-1); u9My.u@-*%  
} A(G%9'T  
=B<>H$  
private void mergeSort(int[] data, int[] temp, int l, int r) { `&2~\o/  
int i, j, k; bD*V$w*P  
int mid = (l + r) / 2; l{ja2brX  
if (l == r) pQAG%i^mF  
return; v7&oHOk!  
if ((mid - l) >= THRESHOLD) VI7f}  
mergeSort(data, temp, l, mid); NC'+-P'y  
else 'NHtCs=F   
insertSort(data, l, mid - l + 1); =NLsT.aa  
if ((r - mid) > THRESHOLD) yH5^EY7rQ  
mergeSort(data, temp, mid + 1, r); (T:OZmEO.  
else Uyf<:8U\  
insertSort(data, mid + 1, r - mid); P1KXvc}JGe  
([SrIG>X  
for (i = l; i <= mid; i++) { BH6)`0&2*N  
temp = data; C4wJSQl_I  
} S`g:z b_  
for (j = 1; j <= r - mid; j++) { "&;8U.  
temp[r - j + 1] = data[j + mid]; n "?It  
} JLo'=(  
int a = temp[l]; 4j^-n_T  
int b = temp[r]; )a"rj5~-  
for (i = l, j = r, k = l; k <= r; k++) { .XDY1~w0  
if (a < b) { </! `m8\  
data[k] = temp[i++]; 4g<F."  
a = temp; `2N&{(  
} else { ^*JpdmVhu  
data[k] = temp[j--]; vM )2F  
b = temp[j]; p|fSPSz  
} D+edTAQ8  
} ML@-@BaN  
} aK>5r^7S  
I3sH8/*  
/** gwVfiXR4  
* @param data !_EL{/ko  
* @param l `q =e<$  
* @param i Z3jh-{0  
*/ =P'33) \ )  
private void insertSort(int[] data, int start, int len) { l{q$[/J~)  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ?^y%UIzf  
} N6K%Wkz  
} u\LG_/UJV1  
} GjTj..G/  
} )Dn~e#  
Zx$q,Zo<  
堆排序: mBW E^  
7 0pt5O3]  
package org.rut.util.algorithm.support; :eIPPh|\  
ybnq;0}$  
import org.rut.util.algorithm.SortUtil; &"X6s%ZH|  
fzcPi9+  
/** 7C~qAI6Eg  
* @author treeroot },1**_#<Br  
* @since 2006-2-2 i>=d7'oR  
* @version 1.0 rb8c^u#r  
*/ ]MI> "hn  
public class HeapSort implements SortUtil.Sort{ MV8Lk/zd?A  
9J>b6   
/* (non-Javadoc) ^Ej4^d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m ,B,dqT  
*/ b _Q:v&  
public void sort(int[] data) { C\.mv|aW~  
MaxHeap h=new MaxHeap(); :CH*~o  
h.init(data); YA(_*h  
for(int i=0;i h.remove();  3Ee8_(E\  
System.arraycopy(h.queue,1,data,0,data.length); `v2]Jk<  
} g~q+a-  
~vf&JH'!  
private static class MaxHeap{ ;VQFz&Q$u  
WY=RJe2  
void init(int[] data){ s=)0y$  
this.queue=new int[data.length+1]; do3 BI4Q  
for(int i=0;i queue[++size]=data; PT2b^PP  
fixUp(size);  ?gZJ v  
} -KzU''  
} m]g"]U:  
oECM1'=Bf  
private int size=0; Ub1?dk   
X`,4pSQ;  
private int[] queue; 44s K2  
 ]J= S\  
public int get() { r 5$(  
return queue[1]; &5 *)r@+  
} TF\<`}akX  
79.J`}#  
public void remove() { sy^k:y?  
SortUtil.swap(queue,1,size--); iEDZ\\,  
fixDown(1); Dq T)%a  
} R'E8>ee; ^  
file://fixdown "|1MJuY_6  
private void fixDown(int k) { K?l1Gj  
int j; |=OO$z;q|  
while ((j = k << 1) <= size) { m7:E7 3:  
if (j < size %26amp;%26amp; queue[j] j++; &&1q@m,cP  
if (queue[k]>queue[j]) file://不用交换 6~g:"}  
break; 6r"PtHr  
SortUtil.swap(queue,j,k); rWN#QL()*  
k = j; H>AzxhX[n  
} ;bt@wgY  
} E)(`Z0  
private void fixUp(int k) { X^3 0a*sj  
while (k > 1) { ^V^In-[!y:  
int j = k >> 1; Kuh! b`9  
if (queue[j]>queue[k])  ]Ll <  
break; =k4yWC5-  
SortUtil.swap(queue,j,k); (wJtEoB9^  
k = j; eO,  
} -Q@jL{Ue  
} #unE>#DW  
S"|sD|xOb  
} -t9oL3J  
M mg#Vy~  
} o z } p]l7  
N0s)Nao4  
SortUtil: (vIrXF5Dnj  
)k&pp^q\  
package org.rut.util.algorithm; y)3(  
UI~ENG  
import org.rut.util.algorithm.support.BubbleSort; B0c}5V  
import org.rut.util.algorithm.support.HeapSort; '-#6;_ i<  
import org.rut.util.algorithm.support.ImprovedMergeSort; UQ|zSalv,  
import org.rut.util.algorithm.support.ImprovedQuickSort; 7YRDQjg  
import org.rut.util.algorithm.support.InsertSort; @4:cn  
import org.rut.util.algorithm.support.MergeSort; $,k SR}  
import org.rut.util.algorithm.support.QuickSort; UT [9ERS  
import org.rut.util.algorithm.support.SelectionSort; nf< <]iHf  
import org.rut.util.algorithm.support.ShellSort; CiP-Zh[gZ  
{d$S~  
/** =J8)Z'Jr  
* @author treeroot wAHb 5>!  
* @since 2006-2-2 syh0E= If_  
* @version 1.0 Q6S[sTKR  
*/ *jWU8.W  
public class SortUtil { 7YbI|~  
public final static int INSERT = 1; |Sg *j-.  
public final static int BUBBLE = 2; TGLkwXOkT  
public final static int SELECTION = 3; |Y<ca   
public final static int SHELL = 4; y? [*qnPj  
public final static int QUICK = 5; f5a%/1?  
public final static int IMPROVED_QUICK = 6; Ja-D}|;  
public final static int MERGE = 7; 98C~%+  
public final static int IMPROVED_MERGE = 8; [Hdk=p  
public final static int HEAP = 9; ej,MmLu~^  
3w )S=4lB  
public static void sort(int[] data) { /2u;w !oi.  
sort(data, IMPROVED_QUICK); F *; +-e  
} +ZXGT  
private static String[] name={ >Z^7=5K"O  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 2h&pm   
}; ;J\{r$q  
Tu_dkif'  
private static Sort[] impl=new Sort[]{ Kw'Dzz%kN  
new InsertSort(), ?HIc=  
new BubbleSort(), *DkA$Eu3u  
new SelectionSort(), }jU{RR%6B  
new ShellSort(), &3{:h  
new QuickSort(), nGW wXySq  
new ImprovedQuickSort(), |~H'V4)zXu  
new MergeSort(), se_zCS4Y  
new ImprovedMergeSort(), cXJgdBwo  
new HeapSort() f.jAJ; N>  
}; 6o;lTOes  
r"fu{4aX  
public static String toString(int algorithm){ UO"8 I2rB  
return name[algorithm-1]; ;$i9gP[|m  
} v03~=(  
tBBN62^ X  
public static void sort(int[] data, int algorithm) { j~DoMP5Ls  
impl[algorithm-1].sort(data); svpWABO  
} Op3 IL/  
,h/0:?R KW  
public static interface Sort { ~73"AWlp  
public void sort(int[] data); %o4d4 3uZ  
} !^axO  
$ O!f*lG  
public static void swap(int[] data, int i, int j) { @YwaOc_%  
int temp = data; d; #9xD'  
data = data[j]; 8KWT d  
data[j] = temp; V2/+SvB2  
} 6}NvVolr  
} 2L<TqC{,-  
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