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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。 3"<{YEj8U  
插入排序: zg^5cHP\  
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package org.rut.util.algorithm.support; mT~:k}u~W  
iedoL0#  
import org.rut.util.algorithm.SortUtil; :qnRiK]  
/** {wd.aUB  
* @author treeroot VNMhtwmK,  
* @since 2006-2-2 jCy2bE  
* @version 1.0 D@f%&|IZ  
*/ Z &PwNr/  
public class InsertSort implements SortUtil.Sort{ m(&ZNZK  
rb9 x||  
/* (non-Javadoc) txliZ|.O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7IFUsli]  
*/ &\5T`|~)!  
public void sort(int[] data) { #%x4^A9 q  
int temp; 6C   
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3L#KHTM  
} kWr*+3Xq  
} 9m8`4%y=  
} tFb49zbk  
8XTVpf4  
} s=28.  
}-Zfl jj  
冒泡排序: J]Y." hi  
6KV&E8Gn  
package org.rut.util.algorithm.support; AR)&W/S)7,  
<FGM/e4  
import org.rut.util.algorithm.SortUtil; *BSL=8G{  
gmrj CLj  
/** KUB"@wUr  
* @author treeroot @P)GDB7A  
* @since 2006-2-2 #opFUX-  
* @version 1.0 lZb1kq%9g  
*/ =WN6Fj`  
public class BubbleSort implements SortUtil.Sort{ JP[BSmhAV  
- 5A"TNU  
/* (non-Javadoc) |~'{ [?a*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8 v&5)0u  
*/ ncu> @K$n  
public void sort(int[] data) { Y5(`/  
int temp; 2< ^B]N  
for(int i=0;i for(int j=data.length-1;j>i;j--){ x OZ?zN  
if(data[j] SortUtil.swap(data,j,j-1); /X8b=:h  
} }!B<MGBd  
} U4Qc$&j>  
} sHAzg^n}r  
} \z<'6,b  
qxE~Moht  
} 3``$yWWg  
G&:YgwG  
选择排序: t7n*kiN<q  
` R^[s56wp  
package org.rut.util.algorithm.support; 3A'd7FJ0G  
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import org.rut.util.algorithm.SortUtil; *}yW8i}36  
2W|j K  
/** I:='LH,  
* @author treeroot m3.d!~U\  
* @since 2006-2-2 2,dG Rf  
* @version 1.0 [7L1y) I(  
*/ ?EKYKLwr  
public class SelectionSort implements SortUtil.Sort { ynDa4HB  
'0w'||#1  
/* $] w&`F-  
* (non-Javadoc) eK`n5Z&Y\  
* ,TP^i 0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e8P |eK  
*/ ~D 5'O^  
public void sort(int[] data) { [f^~Z'TIN/  
int temp; b) .@ xS  
for (int i = 0; i < data.length; i++) { )|\72Z~eq  
int lowIndex = i; AnIENJ  
for (int j = data.length - 1; j > i; j--) { 3\6jzD  
if (data[j] < data[lowIndex]) { XnV|{X%]U  
lowIndex = j; < R0c=BZ>  
} pH)V:BmJ  
} 8`'_ckIgr  
SortUtil.swap(data,i,lowIndex); |1;0q<Ka  
} dZv-lMYBE  
} Le#bitp  
j2tw`*S+  
} :aco$ZNH5  
Qp%kX@Z'  
Shell排序: Y#C=ku  
Z'!jZF~4p  
package org.rut.util.algorithm.support; 4l[f}Z  
5jkW@  
import org.rut.util.algorithm.SortUtil; 9KD2C>d<  
7?B]X%  
/** b Kv9F@  
* @author treeroot k1B7uA'h"G  
* @since 2006-2-2 O!uX:TE|Q  
* @version 1.0 Mx[tE?!2  
*/ 7 ?/ Fr(\  
public class ShellSort implements SortUtil.Sort{ Kkdd}j  
8h-6;x^^  
/* (non-Javadoc) ~h0SD(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u'LA%l-  
*/ Pp #!yMxBr  
public void sort(int[] data) { CEZ*a 0}=  
for(int i=data.length/2;i>2;i/=2){ aRg- rz  
for(int j=0;j insertSort(data,j,i); aY8>#t?  
} !!dNp5h`  
} }_XKO\  
insertSort(data,0,1); Ij/c@#q.  
} P}JA"V&  
\)`\F$CF  
/** 42 8kC,  
* @param data =<R77rnY&  
* @param j Ca]vK'(  
* @param i 9A)(K,  
*/ =as]>?<  
private void insertSort(int[] data, int start, int inc) { L@0DT&5  
int temp; "5ah{,  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); e-\J!E'1F  
} p}O@ %*p .  
} sR'rY[^/|  
} Cz m`5  
M HlP)'  
} D)f hk!<  
2'_Oi-&  
快速排序: E#8`X  
|L<oKMZY  
package org.rut.util.algorithm.support; lOcvRF  
pO GVD  
import org.rut.util.algorithm.SortUtil; ;./Tv84I^  
!f]F'h8  
/** js'* :*7  
* @author treeroot V=\&eS4^"  
* @since 2006-2-2 o+q4Vg9&  
* @version 1.0 x^9W<  
*/ fHR1ku y  
public class QuickSort implements SortUtil.Sort{ NuW9.6$Jrf  
w,9$*=k  
/* (non-Javadoc) X62z>mM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [m!$01=  
*/ Wvm f[!V;  
public void sort(int[] data) { A:& `oJl  
quickSort(data,0,data.length-1); ]={:VsnL  
} (Q\QZu@  
private void quickSort(int[] data,int i,int j){ Y Q3%vH5#y  
int pivotIndex=(i+j)/2; nD!C9G#oS  
file://swap 86.!s Q8b  
SortUtil.swap(data,pivotIndex,j); `L7 cS  
sw8Ic\vT  
int k=partition(data,i-1,j,data[j]); wz T+V,   
SortUtil.swap(data,k,j); a{el1_DIGK  
if((k-i)>1) quickSort(data,i,k-1); +#,t  
if((j-k)>1) quickSort(data,k+1,j); Q->'e-\E<"  
[t,grdw  
} A&)P_B1|  
/** Ui'~d(F  
* @param data 1 NLawi6  
* @param i Q(E$;@   
* @param j [}}oHm3&  
* @return :KMo'pL  
*/ #](ML:!  
private int partition(int[] data, int l, int r,int pivot) { b{(!Ls_ &  
do{ boJQ3Xc  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); qS+'#Sn  
SortUtil.swap(data,l,r); NS mo(c >5  
} !\RR UH*  
while(l SortUtil.swap(data,l,r); ^ 4c2}>f  
return l; `Nc3I\tCM  
} D?8t'3no  
5"]PwC  
} ~+V]MT  
SL>>]A,E<`  
改进后的快速排序: JrYpZ.Nh  
J+w"{ O  
package org.rut.util.algorithm.support; {b7P1}>-*  
XZJ}nXy  
import org.rut.util.algorithm.SortUtil; hDjsGB|Fz  
eW0:&*.vMj  
/** C[_{ $j(J  
* @author treeroot |#f P8OK  
* @since 2006-2-2 Kx ?}%@b  
* @version 1.0 ]l}8  
*/ hRtnO|Z6  
public class ImprovedQuickSort implements SortUtil.Sort { L'z;*N3D  
,dK%[  
private static int MAX_STACK_SIZE=4096; G2 xYa$&][  
private static int THRESHOLD=10; VCkhK9(N  
/* (non-Javadoc) h:Npi `y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t.485L %  
*/ I^0bEwqZ~  
public void sort(int[] data) { <),FI <~  
int[] stack=new int[MAX_STACK_SIZE]; x{5 I  
fb&K.6"  
int top=-1; +SZ#s :#SE  
int pivot; OKxPf]~4E  
int pivotIndex,l,r; gXc&uR0S  
I`p44}D3  
stack[++top]=0; w'?uJW  
stack[++top]=data.length-1; \[ +ZKj:  
80c\O-{  
while(top>0){ akrEZ7A  
int j=stack[top--]; ,Es5PmV@$%  
int i=stack[top--]; I]jVnQ>&  
/vwGSuk._  
pivotIndex=(i+j)/2; VL7zU->  
pivot=data[pivotIndex]; aG`G$3_wx  
~Se/uL;*  
SortUtil.swap(data,pivotIndex,j); FwmE1,  
].7)^  
file://partition \E]s]ft;+  
l=i-1; lf[ (  
r=j; NrhU70y  
do{ ?N&"WL^|  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); c3g\*)Jz"F  
SortUtil.swap(data,l,r); X;6&:%ZL@^  
} g>T'R Vb  
while(l SortUtil.swap(data,l,r); /'!F \ kz  
SortUtil.swap(data,l,j); f)?s.DvUB  
po\QMe  
if((l-i)>THRESHOLD){  Z:u7`%  
stack[++top]=i; Q0Dw2>~_K  
stack[++top]=l-1; D9 ,~Fc  
} {*yhiE,  
if((j-l)>THRESHOLD){ y [.0L!C {  
stack[++top]=l+1; q J@XVN4   
stack[++top]=j; "<txg%j\J  
} .' 3;Z'%"g  
pU<->d;->  
} fL' 42  
file://new InsertSort().sort(data); r#d~($[93  
insertSort(data); (LkGBnXE  
} OI::0KOv  
/** ^#vWdOlt  
* @param data $*`fn{2  
*/ `?2S4lN/  
private void insertSort(int[] data) { !sK{:6s  
int temp; +'y$XR~W{  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); A ElNf:  
} pV<18CaJ  
} !pQQkZol  
} jbMzcn~ehI  
2{| U  
} 6]CY[qEaR$  
V`G)8?%Vy  
归并排序: u=p([ 5]  
]* ':  
package org.rut.util.algorithm.support; FgKDk!ci  
p/4GOU5g  
import org.rut.util.algorithm.SortUtil; $ [0  
!1-:1Whz8  
/** '<4/Md[  
* @author treeroot FJ}/g ?  
* @since 2006-2-2 Kw"7M~  
* @version 1.0 o3qBRT0[R  
*/ -jFvDf,M,D  
public class MergeSort implements SortUtil.Sort{ &,3.V+Sz  
|r%6;8A]i  
/* (non-Javadoc) zxT&K|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u\Tq5PYXt  
*/ SHIK=&\~-  
public void sort(int[] data) { "b|qyT* Sl  
int[] temp=new int[data.length]; = 0Z}s  
mergeSort(data,temp,0,data.length-1); HT[<~c  
} :>\i  
at/besW  
private void mergeSort(int[] data,int[] temp,int l,int r){ B14z<x}Q  
int mid=(l+r)/2; PZ AyHXY  
if(l==r) return ; !%_}Rv!JT  
mergeSort(data,temp,l,mid); Ip|~j} }  
mergeSort(data,temp,mid+1,r); sJw#^l  
for(int i=l;i<=r;i++){ W(9-XlYKE  
temp=data; QZYD;&iY&  
} Nd%,V  
int i1=l; .?@$Rd2@W  
int i2=mid+1; E&7U |$  
for(int cur=l;cur<=r;cur++){ [59_n{S 1  
if(i1==mid+1) 5)AMl)  
data[cur]=temp[i2++]; %f*8JUE16  
else if(i2>r) jLM1 ~`&  
data[cur]=temp[i1++]; Dc}-wnga  
else if(temp[i1] data[cur]=temp[i1++]; a>ZV'~zTf  
else r@%-S!$  
data[cur]=temp[i2++]; */u_RJ  
} ]wc'h>w  
} zL+jlUkE  
Gh>Rt=Qu%  
} gC> A *~J;  
[K9l>O  
改进后的归并排序: p>Qzz`@e  
-V%"i,t  
package org.rut.util.algorithm.support; 4`7N}$j#,  
s%1O}X$c  
import org.rut.util.algorithm.SortUtil; "fU=W|lY  
4703\ HK  
/** &l/2[>D%4  
* @author treeroot &&nvv&a  
* @since 2006-2-2 hV)D,oN3  
* @version 1.0 J4;w9[a$  
*/ g~rZ=  
public class ImprovedMergeSort implements SortUtil.Sort { :54ik,l  
9l]+ rs +  
private static final int THRESHOLD = 10; nxS|]  
h-].?X,]Q  
/* wzwEYZN(q  
* (non-Javadoc) cGIxE[n'  
* @ 4#q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J NPEyC  
*/ 6k|o<`~,  
public void sort(int[] data) { N^*%{[<5  
int[] temp=new int[data.length]; 7;2j^qPr  
mergeSort(data,temp,0,data.length-1); yT.h[yv"w  
} o:W>7~$jr=  
V|13%aE_v  
private void mergeSort(int[] data, int[] temp, int l, int r) { G3 rTzMO  
int i, j, k; YC8wo1;Y!  
int mid = (l + r) / 2; 3"NO"+Q  
if (l == r) ZX'q-JUv f  
return; >-*rtiE  
if ((mid - l) >= THRESHOLD) 7l/.f SW  
mergeSort(data, temp, l, mid); jhgS@g=@ZC  
else iyKAw   
insertSort(data, l, mid - l + 1); 6!*be|<&  
if ((r - mid) > THRESHOLD) IW?).%F  
mergeSort(data, temp, mid + 1, r); U5\^[~vW  
else DvB!- |ek  
insertSort(data, mid + 1, r - mid); ^~9fQJNs  
2Tec#eYe  
for (i = l; i <= mid; i++) { L-? ?%_=  
temp = data; _2xNio&  
} -K eoq  
for (j = 1; j <= r - mid; j++) { Kkcb' aDR  
temp[r - j + 1] = data[j + mid]; m!Cvd9X=  
} 2FU+o\1 %  
int a = temp[l]; 1LYz X;H1  
int b = temp[r]; Y3=5J\d!a  
for (i = l, j = r, k = l; k <= r; k++) { n("Xa#mY[  
if (a < b) { Iv+JEuIi  
data[k] = temp[i++]; ,h,OUo]LIY  
a = temp; /Jj7 +?  
} else { l25_J.e  
data[k] = temp[j--]; kw{dvE\K  
b = temp[j]; >HNBTc=~t  
} Ne#FBRu5  
} )eIC5>#.  
} `@TWZ%f6  
d9e_slx  
/** Q]$gw,H"6  
* @param data v3O+ ;4  
* @param l =1sGT;>  
* @param i fIe';a  
*/ -:cBVu-m  
private void insertSort(int[] data, int start, int len) { `yF6-F  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); .j^tFvN~L  
} iZY4+ X  
} (+uM |a  
} PkX4 !  
} |ecK~+  
0,~||H{  
堆排序: kb3>q($  
+q n[F70}  
package org.rut.util.algorithm.support; Cm@rX A/  
3r^Ls[ey  
import org.rut.util.algorithm.SortUtil; S!WG|75B  
#O 2g]YH  
/** bpP-wA^Hd  
* @author treeroot C2t]  
* @since 2006-2-2 X})5XYvA*  
* @version 1.0 ^Gi9&fS,  
*/ [l44,!Z&  
public class HeapSort implements SortUtil.Sort{ E$SYXe[,  
2_T2?weD5  
/* (non-Javadoc) Ig&H0S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WbJ|]}hJ\  
*/ pPL)!=o!  
public void sort(int[] data) { abMB-  
MaxHeap h=new MaxHeap(); @}; vl  
h.init(data); \ SCi\j/a(  
for(int i=0;i h.remove(); '3<T~t  
System.arraycopy(h.queue,1,data,0,data.length); Z9wKjxu+  
} Fi+8|/5  
^AhV1rBB  
private static class MaxHeap{ ~:FF"T>  
(A(j.[4a  
void init(int[] data){ s.|OdC>U =  
this.queue=new int[data.length+1]; ly[j=vBV  
for(int i=0;i queue[++size]=data; ^_\S)P2c  
fixUp(size); =hRo#]{(K  
} %_Q+@9  
} Ec/&?|$  
.*}!XKp0j  
private int size=0; ^?M# |>  
)[b\wrc   
private int[] queue; :2t0//@X  
='A VI-go5  
public int get() { <+y%k~("  
return queue[1]; "m#17J_  
} m^!Kthq  
0<i8 ;2KD  
public void remove() { i?wEd!=w  
SortUtil.swap(queue,1,size--); T.(C`/VM  
fixDown(1); A_e&#O  
} G&Fe2&5!w  
file://fixdown e"#QUc(  
private void fixDown(int k) { niA>afo  
int j; ($nQmr;t  
while ((j = k << 1) <= size) { a = *'  
if (j < size %26amp;%26amp; queue[j] j++; Ztl?*zL  
if (queue[k]>queue[j]) file://不用交换 'm=TBNQTS  
break; V8n z@  
SortUtil.swap(queue,j,k); CdZ. T/x  
k = j; m!5MGq~  
} 7Pe<0K)s(  
} !zVjbYWY  
private void fixUp(int k) {  $UD$NSl  
while (k > 1) { ^'%Q>FVb  
int j = k >> 1; @.&KRAZ  
if (queue[j]>queue[k]) shgZru  
break; ; ,Nvg6c  
SortUtil.swap(queue,j,k); A)#w~X4  
k = j; Sw.k,p*r  
} !C(U9p. 0  
} ^jb jH I&  
F/SYmNp  
} R ;k1(p  
VUon>XQ G  
} VTUSM{TC  
iE0x7x P_  
SortUtil: R XN0v@V  
7}1Z7"?  
package org.rut.util.algorithm; Tnv,$KOhs  
lY&Sx{-  
import org.rut.util.algorithm.support.BubbleSort; '4Drs}j5  
import org.rut.util.algorithm.support.HeapSort; P3!JA)p6a  
import org.rut.util.algorithm.support.ImprovedMergeSort; `pb=y}  
import org.rut.util.algorithm.support.ImprovedQuickSort; D\^mh{q(  
import org.rut.util.algorithm.support.InsertSort; 5BJn_<  
import org.rut.util.algorithm.support.MergeSort; U?%T~!  
import org.rut.util.algorithm.support.QuickSort; z"nMR_TTu  
import org.rut.util.algorithm.support.SelectionSort; iNs@8<=$T  
import org.rut.util.algorithm.support.ShellSort; VS\| f'E  
cG"wj$'w  
/** *(s0X[-  
* @author treeroot 00B,1Q HP  
* @since 2006-2-2 82)%`$yZw[  
* @version 1.0 *ESi~7;#  
*/ ]GT+UX  
public class SortUtil { >*/:"!u  
public final static int INSERT = 1; }Ug$d>\  
public final static int BUBBLE = 2; +~>cAWZq_  
public final static int SELECTION = 3; G#Kw6  
public final static int SHELL = 4; j.!5&^;u4  
public final static int QUICK = 5; SoWMP2/  
public final static int IMPROVED_QUICK = 6; n-9a 0_{k  
public final static int MERGE = 7; uZTbJ3$$  
public final static int IMPROVED_MERGE = 8; 2KlVj]!7  
public final static int HEAP = 9; <(t{C8>g%  
mlYkn  
public static void sort(int[] data) { \sAkKPI  
sort(data, IMPROVED_QUICK); d]USk&8  
} "S+AkLe(  
private static String[] name={ X$Shi *U[  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" N\"Hf=Y(~  
}; mBxMDnh  
=Fc}T%  
private static Sort[] impl=new Sort[]{ q[Tl#*P?y  
new InsertSort(), cQ;@z2\  
new BubbleSort(), -_xTs(;|8  
new SelectionSort(), SP\s{,'F-b  
new ShellSort(), ;VzdlCZ@  
new QuickSort(),  wh#IQ.E-  
new ImprovedQuickSort(), I<Cm$8O?  
new MergeSort(), U2r[.Ru  
new ImprovedMergeSort(), O1@3V/.Wu  
new HeapSort() riF-9 %i  
}; PWeWz(]0Z4  
j u&v4]  
public static String toString(int algorithm){ t33\f<e  
return name[algorithm-1]; n%;4Fm?  
} s{OV-H  
`z`=!1  
public static void sort(int[] data, int algorithm) { `,O"^zR)z  
impl[algorithm-1].sort(data); %ikPz~(  
} ~|[i64V<^  
![!,i\x  
public static interface Sort { Q,M,^_  
public void sort(int[] data); r0wAh/J|  
} 8`s*+.LI!  
_%3p&1ld  
public static void swap(int[] data, int i, int j) { XqU0AbQ  
int temp = data; FJq g,  
data = data[j]; Sz:PeUr9h  
data[j] = temp; EL%Pv1  
} j<QK1d17  
} pHowioFx  
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