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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。 i]$7w! r&  
插入排序: Hab9~v ]  
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package org.rut.util.algorithm.support; KQ9:lJKr  
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import org.rut.util.algorithm.SortUtil; 3^su%z_%  
/** f (n{7  
* @author treeroot U0N[~yW(t1  
* @since 2006-2-2 ]aakEU  
* @version 1.0 d=4MqX r  
*/ d$2{_6  
public class InsertSort implements SortUtil.Sort{ "| Q&  
3iEcLhe"4  
/* (non-Javadoc) BS|-E6E<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dadMwe_l0  
*/ $uLzC]  
public void sort(int[] data) { VBCj.dw  
int temp; QX]tD4OH  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); (I~,&aBr  
} m#;:%.Rm  
} \AK|~:\]  
} "?9fL#8f*!  
s_*eX N  
} &gEu%s^wR  
Vd1K{rH#  
冒泡排序: .D>lv_kp  
'FUPv61()  
package org.rut.util.algorithm.support; Om1z  
tt[_+e\4  
import org.rut.util.algorithm.SortUtil; q3P3euK3  
8m*\"_S{  
/** 1[Mr2@  
* @author treeroot s{: Mu~v  
* @since 2006-2-2 g*tLqV  
* @version 1.0 1VZ>*Tl  
*/ <?J7Z|  
public class BubbleSort implements SortUtil.Sort{ +`4}bc ,G  
b{dzbmak  
/* (non-Javadoc) z~Pmh%b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ``E;!r="v  
*/ fVN}7PH7+  
public void sort(int[] data) { i ('EBO  
int temp; =4%C?(\  
for(int i=0;i for(int j=data.length-1;j>i;j--){ X%F9.<4  
if(data[j] SortUtil.swap(data,j,j-1); RU >vnDaC  
} {oJa8~P  
} V[bc-m  
} \S@A /t6pa  
} O#U"c5%  
) k2NF="o  
} x> q3w# B  
`k\1vum  
选择排序: `i:0dVs  
7lj-Z~1  
package org.rut.util.algorithm.support; }mGD`5[`  
aKUr":z  
import org.rut.util.algorithm.SortUtil; |zT0g]WH  
^+wzm2i  
/** y;>I'e  
* @author treeroot N*MR6~z4  
* @since 2006-2-2 7cy~qg  
* @version 1.0 #&:nkzd  
*/ 7w$R-Y/E  
public class SelectionSort implements SortUtil.Sort { [uY 2N h  
7r<>^j'  
/* w${=dW@K  
* (non-Javadoc) ,6bMf z  
* JS:lysu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ppD ~xg]  
*/ A X#!9-m3  
public void sort(int[] data) { te''sydUS  
int temp; a?MtY EK2  
for (int i = 0; i < data.length; i++) { 2&d&$Jg  
int lowIndex = i; 1G;Ns] u  
for (int j = data.length - 1; j > i; j--) { MGz> ,c^wW  
if (data[j] < data[lowIndex]) { 6K y;1$  
lowIndex = j; BT1'@qF  
} o'4@]ae   
} 4Qo1f5 >N  
SortUtil.swap(data,i,lowIndex); B<&_lG0sS  
} iHn]yv3 #  
} wEbs E<</  
c>!J@[,  
} -:>#w`H  
-Mvw'#(0  
Shell排序: vWovR`  
htRZ}e  
package org.rut.util.algorithm.support; DmrfD28j~F  
kC5,yj  
import org.rut.util.algorithm.SortUtil; bLzuaNa'  
|K-lg rA  
/** oMe]dK  
* @author treeroot )l}wjKfgO  
* @since 2006-2-2 7jbm w<d)9  
* @version 1.0 &NQR*Tn  
*/ T!A}ipqb  
public class ShellSort implements SortUtil.Sort{ F?ebY k1  
Lp WEu^j  
/* (non-Javadoc) L# 1vf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S: uEK  
*/ SkA'+(  
public void sort(int[] data) { XXcf!~uO  
for(int i=data.length/2;i>2;i/=2){ .8!0b iS  
for(int j=0;j insertSort(data,j,i); FxX3Pq8h  
} $:N "*  
} |P7f^0idk  
insertSort(data,0,1); ` W>B8  
} E|;5Z*  
vUs7#*  
/** O*{H;7Pv  
* @param data ^z;,deoGh  
* @param j tuUXW5!/  
* @param i o#) !b:/  
*/  BZc-  
private void insertSort(int[] data, int start, int inc) { <'_GQM`G  
int temp; xm0#4GFUS  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); {kH^OZ^(e  
} JW [\"`x!  
} \=V[ba:q  
} cgeS)C7  
Le JlTWotC  
} f{c[_OR  
:*'?Ac ?  
快速排序: :+Ax3  
Q3q.*(#  
package org.rut.util.algorithm.support; faOWhIG  
%u0;.3Gw  
import org.rut.util.algorithm.SortUtil; *9ub.:EUwV  
si_ HN{  
/** }C"*ACjF   
* @author treeroot gA1in  
* @since 2006-2-2 ydqmuZ%2h#  
* @version 1.0 ]q7 LoH'S  
*/ G)Bq?=P  
public class QuickSort implements SortUtil.Sort{ 6CmFmc,  
U hhmG+  
/* (non-Javadoc) XWQ0V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o=# [^Zv  
*/ }cej5/*  
public void sort(int[] data) { v@uaf=x-  
quickSort(data,0,data.length-1); ?mR[A`J58  
} mh7sY;SvM  
private void quickSort(int[] data,int i,int j){ )9*3^v  
int pivotIndex=(i+j)/2; gNN" H#=2  
file://swap Q9xx/tUW  
SortUtil.swap(data,pivotIndex,j); )$h9Y   
XJ~l5} y ]  
int k=partition(data,i-1,j,data[j]); 3t{leuO'  
SortUtil.swap(data,k,j); lO:{tV  
if((k-i)>1) quickSort(data,i,k-1);  M .`  
if((j-k)>1) quickSort(data,k+1,j); K!c@aD:#  
eu]iwOc&p  
} ls7A5 <  
/** U.7y8#qf3R  
* @param data [ky6E*dV`  
* @param i {3(.c, q@  
* @param j )c >B23D  
* @return <ii1nz  
*/ E5BgQ5'  
private int partition(int[] data, int l, int r,int pivot) { LZC?383'  
do{ y2$;t'  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 5 t`ap  
SortUtil.swap(data,l,r); ^+Vk#_2Q  
} YQ@6innT  
while(l SortUtil.swap(data,l,r); J-\?,4mcP  
return l; RL Zf{Q>  
} TWR $D  
t<k [W'#  
} s P4 ,S(+e  
jc.JX_/  
改进后的快速排序: B%J%TR_  
"I}Z2  
package org.rut.util.algorithm.support; l5Wa'~0qA  
a950M7  
import org.rut.util.algorithm.SortUtil; iQ{&&>V%  
4G8nebv  
/** ivX37,B\bS  
* @author treeroot W _,;eyo  
* @since 2006-2-2 ,ANK3n\  
* @version 1.0 }t51U0b%  
*/ XCIa2Syo  
public class ImprovedQuickSort implements SortUtil.Sort { +Sd,l>8\  
G(0y|Eq  
private static int MAX_STACK_SIZE=4096; i`KZ,   
private static int THRESHOLD=10; IiK(^:~%  
/* (non-Javadoc) yLz,V}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )Bn>/-  
*/ \;*}zX  
public void sort(int[] data) { d$_q=ywc  
int[] stack=new int[MAX_STACK_SIZE]; pP0Vg'V  
uB <F.!3  
int top=-1; {y:#'n  
int pivot; U7"BlT!V\  
int pivotIndex,l,r; H : T N  
.K@x4 /1  
stack[++top]=0; q#(/*AoU  
stack[++top]=data.length-1; (HaKF7Jsi  
|N$?_<H  
while(top>0){ <P^hYj-swh  
int j=stack[top--]; ?YO =J  
int i=stack[top--]; %]<RRH.w  
Sq-3-w,R~  
pivotIndex=(i+j)/2; 3IK(f .  
pivot=data[pivotIndex]; JOdwv4(3V  
U$A7EFK'  
SortUtil.swap(data,pivotIndex,j); Q-`{PJ(p  
YXzZ-28,<  
file://partition [t.%&#baF  
l=i-1; .'S^&M/$  
r=j; Aa`MK$29F  
do{ T")i+v  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); pYfV~Q^3  
SortUtil.swap(data,l,r); r9] rN  
} v : "m  
while(l SortUtil.swap(data,l,r); Y%/ YFO2vb  
SortUtil.swap(data,l,j); MV<!<Qmj  
~y)bYG!G  
if((l-i)>THRESHOLD){ {M@@)27gW  
stack[++top]=i; 9si}WqAw  
stack[++top]=l-1;   ^RV  
} _3.G\/>[K  
if((j-l)>THRESHOLD){ W{A #]r l  
stack[++top]=l+1; w<Yv`$-`  
stack[++top]=j; 0F+ zG)G"  
} W`N}  
>:jM}*dnL  
} -MrtliepW*  
file://new InsertSort().sort(data); skI(]BDf  
insertSort(data); $7UoL,N>  
} /bmXDDYH4  
/** -SvTg{Q{la  
* @param data Q54r?|'V  
*/ ^`rpf\GX(  
private void insertSort(int[] data) { d@4rD}_Z  
int temp; \TbsoWX  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +5HnZ?E\  
} V#NG+U.B  
} ~!ZmF(:  
} T A\4uy6o  
K$GRJ  
} ^qeY9O  
?GO SeV  
归并排序: j2 }  
j,C,5l=  
package org.rut.util.algorithm.support; j0iAU1~_VX  
1yBt/U2  
import org.rut.util.algorithm.SortUtil; :xFu_%7  
hIuMHq7h  
/** oTCzYY  
* @author treeroot `/O`OrZ1K  
* @since 2006-2-2 6 Wpxp\  
* @version 1.0 WR/o @$/  
*/ V#0 dGP-Z  
public class MergeSort implements SortUtil.Sort{ U@6jOZ  
PS=e\(6QC  
/* (non-Javadoc) JiFA]M`^Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S \e& ?Y`  
*/ V @D]bV@4  
public void sort(int[] data) { 0n:?sFY>  
int[] temp=new int[data.length]; ?;|@T ty%  
mergeSort(data,temp,0,data.length-1); b!0DH[XKV  
} oW 1"%i%  
yiV G ]s  
private void mergeSort(int[] data,int[] temp,int l,int r){ L[?nST18%  
int mid=(l+r)/2; Kt W6AZJ  
if(l==r) return ; "z^(dF|  
mergeSort(data,temp,l,mid); q,B3ru.?d  
mergeSort(data,temp,mid+1,r); e~{^oM  
for(int i=l;i<=r;i++){ FR x6c  
temp=data; _eJXi,  
} w6T[hZ 9  
int i1=l; 5@P%iBA4(3  
int i2=mid+1; X^}A*4j  
for(int cur=l;cur<=r;cur++){ Rj[ hhSx 2  
if(i1==mid+1) TUh&d5a9H  
data[cur]=temp[i2++]; ]^=|Zd-  
else if(i2>r) gmh5 %2M  
data[cur]=temp[i1++]; KRYcCn  
else if(temp[i1] data[cur]=temp[i1++];  fb\DiKsW  
else EgTFwEj  
data[cur]=temp[i2++];  ep+  
} ao#!7F  
} M[, D  *  
`SV"ElRV  
} c juZB Fl  
/X4yB"J>  
改进后的归并排序: zfhTc=(/  
v`JF\"}S  
package org.rut.util.algorithm.support; N.Dhu~V  
Q48+O?&  
import org.rut.util.algorithm.SortUtil; }e<'BIM E  
}N3V5cab  
/** kG/X"6pZ  
* @author treeroot c=6ahX}d  
* @since 2006-2-2 2-++i:, g  
* @version 1.0 t|}O.u-&;~  
*/ AZ[75>  
public class ImprovedMergeSort implements SortUtil.Sort { )kYOHS  
'b^l'KN:S  
private static final int THRESHOLD = 10; ~eP  
'>@4(=I  
/* LP:nba :  
* (non-Javadoc) |h}B{D  
* h T<n1q~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N{8"s&  
*/ >1 @Ltvm  
public void sort(int[] data) { `)32&\  
int[] temp=new int[data.length]; ueDvMP  
mergeSort(data,temp,0,data.length-1); St@l]u9  
} Ekv89swl`i  
$X*mdji  
private void mergeSort(int[] data, int[] temp, int l, int r) { #~^btL'dHF  
int i, j, k; #,L~w  
int mid = (l + r) / 2; 7^$)VBQ/  
if (l == r) XS?gn.o\  
return; "PMQyzl  
if ((mid - l) >= THRESHOLD) +t98 @  
mergeSort(data, temp, l, mid); ?aBj#  
else mEFw|M{  
insertSort(data, l, mid - l + 1); Yd:Q`#7A  
if ((r - mid) > THRESHOLD) f1mHN7hxW  
mergeSort(data, temp, mid + 1, r); !VwmPAMr#v  
else y4@gGC=  
insertSort(data, mid + 1, r - mid); Yi(1^'Bi  
d?A}qA[(  
for (i = l; i <= mid; i++) { -v+&pG?m  
temp = data; B5ea(j  
} w u)Wg-dT  
for (j = 1; j <= r - mid; j++) {  ~,"N[Q  
temp[r - j + 1] = data[j + mid]; B8T\s)fxnX  
} +4et7  
int a = temp[l]; $&hN*7Ts  
int b = temp[r]; p3c"ZPO~z  
for (i = l, j = r, k = l; k <= r; k++) { %r%So_^  
if (a < b) { Qzqc .T  
data[k] = temp[i++]; a+`D'?z  
a = temp;  PWH^=K  
} else { =E(#YCx  
data[k] = temp[j--]; }aF  
b = temp[j]; jk*tL8?i  
} w{!(r  
} ExVDkt0  
} E{4 e<%Y,  
gbDX7r-  
/** cWMUj K/N  
* @param data yto[8;)_  
* @param l F";.6%;AC  
* @param i F;8*H1  
*/  c 6"Ib)  
private void insertSort(int[] data, int start, int len) { Xc*U+M >U  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); %'bJ:  
} n[,XU|2  
} |a-fE]{7  
} 6)qp*P$L  
} rh!;|xB|+  
#(KDjnP[  
堆排序: HeLG?6  
p@~ic#X  
package org.rut.util.algorithm.support; m^V5*JIh  
, sjh^-;  
import org.rut.util.algorithm.SortUtil; thc <xxRP  
_Mk7U@j+9  
/** +D&Pp0xe  
* @author treeroot uo2'"@[e  
* @since 2006-2-2 ! zL1;d  
* @version 1.0 tF7hFL5f  
*/ tGjhHp8}c  
public class HeapSort implements SortUtil.Sort{ D+JAK!W  
h!gk s-0  
/* (non-Javadoc) WBr59@V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) > Lft9e   
*/ 8`=v.   
public void sort(int[] data) { s@8w-]"  
MaxHeap h=new MaxHeap(); -TO\'^][X  
h.init(data); t~``md4  
for(int i=0;i h.remove(); 3Fs5RC~a  
System.arraycopy(h.queue,1,data,0,data.length); &c>?~-!W  
} / 3!fA=+  
o]ePP,  
private static class MaxHeap{ ]fBUT6  
:Y P#  
void init(int[] data){ d\]Yk]r  
this.queue=new int[data.length+1]; ;Hmp f0$  
for(int i=0;i queue[++size]=data; wSEWwU[  
fixUp(size); 0hY{<^"Y  
} v6GPS1:a  
} i#/]KsSp  
! | #83  
private int size=0; HCWNo  
Y}s@WJ  
private int[] queue; {pL+2%`~  
[sF(#Y:I  
public int get() { G2Vv i[c  
return queue[1]; P 43P]M2  
} 0[Ht_qxb  
3djC;*,9,  
public void remove() { xtfBfA  
SortUtil.swap(queue,1,size--); i,I B!x  
fixDown(1); H/+B%2Zj  
} z^<L(/rg9"  
file://fixdown UC HZ2&  
private void fixDown(int k) { 3]RyTQ  
int j; +Q$h ]^>~  
while ((j = k << 1) <= size) { tM4 Cx  
if (j < size %26amp;%26amp; queue[j] j++; TX=yPq  
if (queue[k]>queue[j]) file://不用交换 T4)fOu3]  
break; nUS| sh  
SortUtil.swap(queue,j,k); ) ZfdQ3  
k = j; y5r4+2B  
} T 20&F  
} Fqy\CMC  
private void fixUp(int k) { t.p~\6Yi  
while (k > 1) { 5 Xn.CBd]  
int j = k >> 1; lVOu)q@l7g  
if (queue[j]>queue[k]) @$9'@")  
break; F$BbYf2i  
SortUtil.swap(queue,j,k); V#REjsf,t-  
k = j; Zf$Np50@(  
} d?wc*N3  
} rf~Y6U?7  
8N&+7FK  
} 1u3, '8F  
L){iA-k;Ec  
} \K`L3*cBKK  
5GA C`}}  
SortUtil: v6.t{6zYgY  
M?m,EQh.  
package org.rut.util.algorithm; ^=>Tk$ _2  
?POUtRN  
import org.rut.util.algorithm.support.BubbleSort; oND@:>QBF  
import org.rut.util.algorithm.support.HeapSort; `F<jLU^3  
import org.rut.util.algorithm.support.ImprovedMergeSort; Guz"wY  
import org.rut.util.algorithm.support.ImprovedQuickSort; KlRr8 G!Z  
import org.rut.util.algorithm.support.InsertSort; h/?l4iR*  
import org.rut.util.algorithm.support.MergeSort; ;X*cCb`h   
import org.rut.util.algorithm.support.QuickSort; ) e5 @  
import org.rut.util.algorithm.support.SelectionSort; wLK07e(  
import org.rut.util.algorithm.support.ShellSort; (e(:P~Ry  
<-D/O$q  
/** ^8.]d~j  
* @author treeroot 8J$|NYv_b  
* @since 2006-2-2 9mA{K    
* @version 1.0 .X# `k  
*/ ^[:p|U2mA  
public class SortUtil { 1-lu\"H`  
public final static int INSERT = 1; nRyU]=-X  
public final static int BUBBLE = 2; n]E?3UGD@W  
public final static int SELECTION = 3; Cj~'Lhmv'T  
public final static int SHELL = 4; 2hzsKkrA {  
public final static int QUICK = 5; {~Rk2:gx  
public final static int IMPROVED_QUICK = 6; aDO !  
public final static int MERGE = 7; QQWadVQo  
public final static int IMPROVED_MERGE = 8; EoK~S\dS  
public final static int HEAP = 9; lOtDqb&  
0c}  }Q  
public static void sort(int[] data) { yKO`rtP  
sort(data, IMPROVED_QUICK); vZ.x{"n'~  
} <HbcNE~  
private static String[] name={ ``wSc0\  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" s"t$0cH9  
}; >=[(^l  
'Lu__NfN  
private static Sort[] impl=new Sort[]{ '7XIhN9  
new InsertSort(), z`:lcF{V  
new BubbleSort(), (J z1vEEV  
new SelectionSort(), xlQBe-Wg  
new ShellSort(), 4$P0:  
new QuickSort(), o!)3?  
new ImprovedQuickSort(), On?p 9^9  
new MergeSort(), 8- 2cRs  
new ImprovedMergeSort(), 7(pF[LCF  
new HeapSort() I:mr}mv=i  
}; C.FI~Z  
."9];)2rx  
public static String toString(int algorithm){ Oil?JI Hq  
return name[algorithm-1]; euC&0Ee2  
} Hv2De0W  
j KoG7HH  
public static void sort(int[] data, int algorithm) { V$ ps>  
impl[algorithm-1].sort(data); Z<vKQ4 G  
} tCdqh-   
c@893<_  
public static interface Sort { MdvcnaCG  
public void sort(int[] data); 9jw\s P@  
} V,cBk  
p,eTY[k?  
public static void swap(int[] data, int i, int j) { Ft&]7dT{W  
int temp = data; `\}v#2VJ  
data = data[j]; lhqg$lb  
data[j] = temp; ;C2K~8,  
} #w' kV#  
} [Al&  
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