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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。 H;|:r[d!  
插入排序: ~J{[]wi  
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package org.rut.util.algorithm.support; X$iJ|=vW  
E_1I|$  
import org.rut.util.algorithm.SortUtil; A]%t0>EL<  
/** arKmc@"X  
* @author treeroot S)@vl^3ec  
* @since 2006-2-2 >o#wP  
* @version 1.0 A i){,nh`0  
*/ >wO$Vu `t  
public class InsertSort implements SortUtil.Sort{ "nno)~)u  
_i@eOqoC  
/* (non-Javadoc) TeCpT2!5j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .<^Y E%  
*/ /'fDXSdP  
public void sort(int[] data) { f\U&M,L\ '  
int temp; @[lc0_ b  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); oImgj4C2L  
} AWXpA1(  
} eSNSnh]'  
} xcvr D  
E0^%|Mh]b  
} "IS^a jaq  
3,L3C9V'  
冒泡排序: u7P+^A97L_  
_JTxm>  
package org.rut.util.algorithm.support; uo'31V0  
 0(/D|  
import org.rut.util.algorithm.SortUtil; /NX7Vev  
yL x .#kx6  
/** vSC0D7BlG  
* @author treeroot OrEuQ-,i@  
* @since 2006-2-2 .`>l.gmi&  
* @version 1.0 q,+kPhHEgy  
*/ (e3Gs+;  
public class BubbleSort implements SortUtil.Sort{ TTZxkK  
F*JvpI[7n  
/* (non-Javadoc) )(Mr f{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x>,F*3d3  
*/ #3yw   
public void sort(int[] data) { "=\_++  
int temp; +VLe'|  
for(int i=0;i for(int j=data.length-1;j>i;j--){ @ PoFxv  
if(data[j] SortUtil.swap(data,j,j-1); ViwpyC'v  
} (S)E|;f%C  
} k;_KKvQ  
} EH*ym#Y  
} zB6u-4^wT  
,' r L'Ys  
} \y H3Y  
 /E{dM2  
选择排序: -N7L #a  
3R%UPT0>  
package org.rut.util.algorithm.support; #>m, Cm  
 ;[KriW  
import org.rut.util.algorithm.SortUtil; Jhsv2,8 {  
q X%vRf0  
/** n~)HfY  
* @author treeroot !\#Wk0Ku  
* @since 2006-2-2 %:w% o$  
* @version 1.0 yvoo M'R  
*/ "vOfAo]`  
public class SelectionSort implements SortUtil.Sort { 5u|=;Hz*)  
u2-@?yt  
/* Ly)(_Tp@+  
* (non-Javadoc) {#1j"  
* v=.z|QD^1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @9uYmkcV  
*/ OVUs]uK  
public void sort(int[] data) { -M:hlwha  
int temp; ..]*Ao2  
for (int i = 0; i < data.length; i++) { ewAH'H]o  
int lowIndex = i; UGmuX:@y76  
for (int j = data.length - 1; j > i; j--) { :Dk@?o@2;C  
if (data[j] < data[lowIndex]) { 833 %H`jQc  
lowIndex = j; O| 1f^_S/  
} g>!:U6K  
} pdi=6<?bd  
SortUtil.swap(data,i,lowIndex); j(%gMVu  
} %|*nmIPq(  
} ," C[Qg(  
xi?P(s A  
} r}oURy,5  
`&u<aLA  
Shell排序: rmPne8D=c(  
A-a17}fta  
package org.rut.util.algorithm.support; i5 L:L  
<o&o=Y8  
import org.rut.util.algorithm.SortUtil; *b Ci2mbm@  
a1g6}ym\  
/** VelB-vy&  
* @author treeroot vXy uEEe  
* @since 2006-2-2 &\1'1`N1  
* @version 1.0 E[jXUOu-  
*/ Q(IJD4  
public class ShellSort implements SortUtil.Sort{ )@Zc?Da  
/`+Hw dk  
/* (non-Javadoc) k<YtoV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8ji^d1G,  
*/ QN_)3lm  
public void sort(int[] data) { aJ :A%+1  
for(int i=data.length/2;i>2;i/=2){ 9Qzjqq:"Li  
for(int j=0;j insertSort(data,j,i); y Y>-MoF/t  
} 1 [Sv  
} u/gm10<OWa  
insertSort(data,0,1); =PNdP  
} w0Fwd  
Yzj%{fkh  
/** x?,~TC4  
* @param data G&x'=dJ  
* @param j p-5P as  
* @param i jDlA<1  
*/ T[0V%Br{d+  
private void insertSort(int[] data, int start, int inc) { kqVg2#<@M  
int temp; 8^/+wa+G  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); cT-K@dg  
} LkJ$aW/  
} T&1-eq>l  
} ]u rK$   
klgv{_b  
} Ro'jM0(KE  
gB]C&Q  
快速排序:  6Xdtr  
 d?:`n 9`  
package org.rut.util.algorithm.support; r0F_;  
aGPqh,<QD  
import org.rut.util.algorithm.SortUtil; Q0V^PDF  
0jR){G9+  
/**  5ZnSA9?  
* @author treeroot Y 3o^Euou  
* @since 2006-2-2 +w "XNl  
* @version 1.0 =m`l%V[  
*/ JAc@S20v\  
public class QuickSort implements SortUtil.Sort{ .Qd}.EG  
DVObrL)znL  
/* (non-Javadoc) S?*^>Y-e;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KHvIN}V5?3  
*/ "@.Z#d|Y  
public void sort(int[] data) { MWM +hk1fs  
quickSort(data,0,data.length-1); |]^l^e 6m  
} |vv]Z(_  
private void quickSort(int[] data,int i,int j){ \). Nag+  
int pivotIndex=(i+j)/2; za,6 du6  
file://swap fC_zX}3  
SortUtil.swap(data,pivotIndex,j); }%eDEM  
&oA~ Tx  
int k=partition(data,i-1,j,data[j]); k_]\(myq  
SortUtil.swap(data,k,j); 7egq4gN]2Y  
if((k-i)>1) quickSort(data,i,k-1); lZ}P{d'f.  
if((j-k)>1) quickSort(data,k+1,j); !q!"UMiG  
,# ]+HS^B  
} $zdd=.!KiK  
/** X*0k>j  
* @param data wi>DZkR  
* @param i Y|mW.  
* @param j 1{^CfamF  
* @return x'@W=P 7   
*/ R;WW f.#  
private int partition(int[] data, int l, int r,int pivot) { qtO1hZ  
do{ 9*' &5F=  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ]de\i=?|  
SortUtil.swap(data,l,r); Ujf,6=M  
} WPIZi[hBs  
while(l SortUtil.swap(data,l,r); &9RH}zv6  
return l; Q\H_t)-  
} v' C@jsx M  
JlUb0{8PE  
} sTiYf  
Q*gnAi&.#  
改进后的快速排序: oWI!u 5  
}@wVW))6$  
package org.rut.util.algorithm.support; Ddb-@YD&+0  
?fV?|ZGZI  
import org.rut.util.algorithm.SortUtil; v{r1E]rY  
iecWa:('  
/** [~COYjp  
* @author treeroot +@e }mL\8  
* @since 2006-2-2 J<rlz5':  
* @version 1.0 :i.t)ES  
*/  m;c3Z-  
public class ImprovedQuickSort implements SortUtil.Sort { Wj&nUp{  
$|k%@Q>  
private static int MAX_STACK_SIZE=4096; 975 _d_U  
private static int THRESHOLD=10; xpAok]  
/* (non-Javadoc) &Y+e=1a+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QCWf.@n  
*/  7SaiS_{:  
public void sort(int[] data) { ^_sQG  
int[] stack=new int[MAX_STACK_SIZE]; 0Q7MM6  
[P{a_(  
int top=-1; )AI?x@  
int pivot; 40u7fojg2  
int pivotIndex,l,r; !~)90Z!  
\0nlPXk?G  
stack[++top]=0; })P O7:  
stack[++top]=data.length-1; >zQOK-  
88+ =F XG  
while(top>0){ T<P0T<  
int j=stack[top--]; ]w!0u2K<Q\  
int i=stack[top--]; fH[Wkif  
G{+2x N a(  
pivotIndex=(i+j)/2; FNC[59   
pivot=data[pivotIndex]; 1eHe~p ,  
+Juh:1H  
SortUtil.swap(data,pivotIndex,j); 6|5H=*)DH  
W2hA-1  
file://partition )&:L'N  
l=i-1; "kU]  
r=j; 1 DqX:WM6  
do{ o,1Dqg4P3  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); %&h c"7/k  
SortUtil.swap(data,l,r); ya.n'X14  
} QjJfE<h  
while(l SortUtil.swap(data,l,r); Z5$fE7ba+  
SortUtil.swap(data,l,j); LL.x11 o3  
wG8 nw;  
if((l-i)>THRESHOLD){ f0DK>L  
stack[++top]=i; 0elxA8Z~e  
stack[++top]=l-1; wx*1*KZ  
} BZ+;n |<r  
if((j-l)>THRESHOLD){ 6WeM rWx  
stack[++top]=l+1; !p',Za   
stack[++top]=j; 7 \X$7  
} &?y7I Pp  
RkA8  
} +P)ys#=  
file://new InsertSort().sort(data); {~'H  
insertSort(data); &iBNO,v  
} CW p#^1F  
/** 1'Rmg\(  
* @param data W:vr@e6  
*/ FY4T(4#  
private void insertSort(int[] data) { F?BS717qS%  
int temp; <( EyXV  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wt?o 7R2  
} UFw](%=&M  
} bq NP#C  
} U*\17YU6h  
YG`? o  
} kAo.C Nj7  
e)b%`ntF  
归并排序: gi$XB}L+X  
Ac`;st%l.  
package org.rut.util.algorithm.support; {$33B'wk  
KmmQ,e%  
import org.rut.util.algorithm.SortUtil; 2khh4?|\  
e;h,V(  
/** 4-^[%&>}  
* @author treeroot 0[Eb .2I  
* @since 2006-2-2 )+EN$*H  
* @version 1.0 |>+uw|LtZ  
*/ 59lj7  
public class MergeSort implements SortUtil.Sort{ sJU`u'w  
qybxXK:  
/* (non-Javadoc) ^2C>L}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jn=:G+0  
*/ Ilq=wPD}j  
public void sort(int[] data) { R5(T([w'  
int[] temp=new int[data.length]; [E|uY]DR  
mergeSort(data,temp,0,data.length-1); fd1C {^c  
} q7_+}"i  
0BK5qz  
private void mergeSort(int[] data,int[] temp,int l,int r){ ?\y%]1  
int mid=(l+r)/2; [_.n$p-  
if(l==r) return ; 24B<[lSK  
mergeSort(data,temp,l,mid); iKAusWj  
mergeSort(data,temp,mid+1,r); 3i=Iu0  
for(int i=l;i<=r;i++){ |8U;m:AS  
temp=data; B<,YPS8w  
} Z h'&-c_J  
int i1=l; d1G8*YO@  
int i2=mid+1; /{*$JF  
for(int cur=l;cur<=r;cur++){ Qihdn66  
if(i1==mid+1) VteEDL/w  
data[cur]=temp[i2++]; # {PmNx%M  
else if(i2>r) ppN} k)m  
data[cur]=temp[i1++]; KY.ZT2k  
else if(temp[i1] data[cur]=temp[i1++]; 76@qHTh }  
else Q2QY* A  
data[cur]=temp[i2++]; f~ U.a.Fb  
} >5ChcefH  
} , ;jGJr  
v("wKHWTI@  
} 6N" l{!  
(CE7j<j  
改进后的归并排序: MKg,!TELe  
2*1ft>Uty  
package org.rut.util.algorithm.support; 7x k|+!  
/+[63=fl  
import org.rut.util.algorithm.SortUtil; 1@qgF  
[Qj;/  
/** <]d LX}C)  
* @author treeroot E=w3=\JP  
* @since 2006-2-2 nc?B6IV  
* @version 1.0 lm0N5(XP  
*/ c$h9/H=~  
public class ImprovedMergeSort implements SortUtil.Sort { h"W8N+e\  
5zB~4u  
private static final int THRESHOLD = 10; g0&\l}&%U  
qTmD '2  
/* ,hRN\Kt)p  
* (non-Javadoc) $>q@SJ1q  
* !#N\ b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N#k61x  
*/ r{K;|'d%h  
public void sort(int[] data) { (f#b7O-Wn  
int[] temp=new int[data.length]; 'EhBRU%  
mergeSort(data,temp,0,data.length-1); L%h/OD  
} >I'% !E;  
-x*2t;%z{U  
private void mergeSort(int[] data, int[] temp, int l, int r) { MesRa(  
int i, j, k; ,o#kRWRG  
int mid = (l + r) / 2; |i7a@'0)  
if (l == r) 8%:]W^  
return; C9~~O~7x  
if ((mid - l) >= THRESHOLD) #R&H &1  
mergeSort(data, temp, l, mid); 4N>>+]MWc  
else TqAPAHg  
insertSort(data, l, mid - l + 1); 1hmc,c  
if ((r - mid) > THRESHOLD) )!W45"l-3M  
mergeSort(data, temp, mid + 1, r); CIC[1,  
else Lx[ ,Z,kD  
insertSort(data, mid + 1, r - mid); Wf26  
|ys0`Vb=$  
for (i = l; i <= mid; i++) { %,q. ),F  
temp = data; anN#5jt  
} '%;\YD9  
for (j = 1; j <= r - mid; j++) { #x@eDnb_  
temp[r - j + 1] = data[j + mid]; =Lp7{09u  
} 3$/ 4wH^  
int a = temp[l]; q3w1GD  
int b = temp[r]; +OHGn;C  
for (i = l, j = r, k = l; k <= r; k++) { .*/Fucr  
if (a < b) { nk=$B (h  
data[k] = temp[i++]; \2e0|)aF6  
a = temp;  zGlZ!t:  
} else { L}k/9F.5  
data[k] = temp[j--]; K_&MoyJJ9f  
b = temp[j]; 9S7A!AKE  
} h2q/mi5{  
} >Aq:K^D/3F  
} zJN7<sv  
BlC<`2S  
/** +[-i%b3q  
* @param data 5Fw - d  
* @param l }IaA7f  
* @param i ]uh3R{a/  
*/ LHYLC>J  
private void insertSort(int[] data, int start, int len) { X$n(-65  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); zu\`1W^  
} 0 p uY"[c  
} HIvZQQW|  
} j}JZ  
} q6d~V] 4:  
,FSrn~-j9  
堆排序: ^+|De}`u  
| A)\ :  
package org.rut.util.algorithm.support; b^CNVdo'  
L"(4R^]  
import org.rut.util.algorithm.SortUtil; {]N3f[w  
:#t*K6dz  
/** *%FA:Y  
* @author treeroot y/_XgPfWU  
* @since 2006-2-2 S ZU \i*  
* @version 1.0 0y#Ih {L  
*/ |V,<+BEi  
public class HeapSort implements SortUtil.Sort{ *f+: <=i  
/bRg?Q  
/* (non-Javadoc) Xl-e !  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E8[T   
*/ v3[@1FQ"  
public void sort(int[] data) { TLa]O1=Bf.  
MaxHeap h=new MaxHeap(); }j {!-&  
h.init(data); pox, Im  
for(int i=0;i h.remove(); R{hf9R,  
System.arraycopy(h.queue,1,data,0,data.length); I/J7rkf  
} sy5 Fn~\R  
?}P5p^6  
private static class MaxHeap{ ^"8wUsP  
Hf gz02Z$  
void init(int[] data){ G;iEo4\?  
this.queue=new int[data.length+1]; y' C-[nk  
for(int i=0;i queue[++size]=data; Tny> D0Z#  
fixUp(size); Z}6^ve  
} R W/z1  
} xyh.N)  
$7Jo8^RE  
private int size=0; 4_?7&G0(  
pbXi9|bI  
private int[] queue; AONDx3[   
clO,}Ph>  
public int get() {  k+ o|0  
return queue[1]; 7A$B{  
}  vb{i  
r#i?j}F}  
public void remove() { \_6OCVil  
SortUtil.swap(queue,1,size--); ,El!fgL  
fixDown(1); 2\D8.nQr  
} ;t#]2<d*  
file://fixdown LJlZ^kh  
private void fixDown(int k) { aBuoHdg;  
int j; V&{MQWy  
while ((j = k << 1) <= size) { S_(d9GK<  
if (j < size %26amp;%26amp; queue[j] j++; KFRw67^  
if (queue[k]>queue[j]) file://不用交换 (]2H7X:b  
break; kma?v B  
SortUtil.swap(queue,j,k); coE&24,0  
k = j; .x83Ah`  
} Pt,ebL~  
} CB\{!  
private void fixUp(int k) { z`@^5_  
while (k > 1) { jH;Du2w  
int j = k >> 1; `6=-WEo  
if (queue[j]>queue[k]) pL1i|O  
break; hf6f.Z  
SortUtil.swap(queue,j,k); o89( h!  
k = j; <i\A_qqc/  
} C@\{ehG  
} knp>m,w  
-T@`hk`  
} ~EiH-z4U  
PyC0Q\$%  
} ?i\;:<e4  
uYI@ 9U  
SortUtil: y^>Q/H\  
v5}X+'  
package org.rut.util.algorithm; {lG@hN'  
E$s/]wnr[  
import org.rut.util.algorithm.support.BubbleSort; <i?a0  
import org.rut.util.algorithm.support.HeapSort; ^Mkk@F&1  
import org.rut.util.algorithm.support.ImprovedMergeSort; ` TqSQg_l  
import org.rut.util.algorithm.support.ImprovedQuickSort; Qq& W3  
import org.rut.util.algorithm.support.InsertSort; w0m^ &,;#  
import org.rut.util.algorithm.support.MergeSort; @exey  
import org.rut.util.algorithm.support.QuickSort; :fcM:w&  
import org.rut.util.algorithm.support.SelectionSort; c,EBF\r8*  
import org.rut.util.algorithm.support.ShellSort; \/`?  
=JLh?Wx  
/** x+5k <Xi}  
* @author treeroot SUCU P<G  
* @since 2006-2-2 9Ru;`  
* @version 1.0 uLeRZSC  
*/ 5v.DX`"  
public class SortUtil { <~U4*  
public final static int INSERT = 1; gwkb!#A  
public final static int BUBBLE = 2; |H}sYp  
public final static int SELECTION = 3; 66&EBX}  
public final static int SHELL = 4; |iYg >  
public final static int QUICK = 5; zSTR^sgJ  
public final static int IMPROVED_QUICK = 6; qeL pXe0c  
public final static int MERGE = 7; Ji'(`9F&a  
public final static int IMPROVED_MERGE = 8; F'P Qqb{  
public final static int HEAP = 9; Lz9#A.  
9;t]Hp_+K  
public static void sort(int[] data) { M6|I6M<  
sort(data, IMPROVED_QUICK); 5E\#%K[  
} +YY8h>hj  
private static String[] name={ B1 0+*p(  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" #^#Kcg  
}; I`RBj`IF  
vE, 37  
private static Sort[] impl=new Sort[]{ \kIMDg3}  
new InsertSort(), @`"AHt  
new BubbleSort(), y7\"[<E`(V  
new SelectionSort(), .Ce8L&cU  
new ShellSort(), OWjJxORB  
new QuickSort(), . v)mZp  
new ImprovedQuickSort(), 0BPMmk  
new MergeSort(), IakKi4(  
new ImprovedMergeSort(), NUJ~YWO;  
new HeapSort() Wl"0m1G  
}; t G.(flW,  
,<,:8B  
public static String toString(int algorithm){ E|EgB33S  
return name[algorithm-1]; H!IshZfktn  
} 2C^B_FUg|]  
sd re#@n}  
public static void sort(int[] data, int algorithm) { \t4tiCw  
impl[algorithm-1].sort(data); yoe}$f4  
} imL_lw^?  
1$lh"fHU  
public static interface Sort { 1nhtM  
public void sort(int[] data); 5~ 'Ie<Y_  
} *ZSdl 0e  
:\~+#/=:  
public static void swap(int[] data, int i, int j) { ~i;fDQ&!  
int temp = data; zdun,`6  
data = data[j]; #Doq P:  
data[j] = temp; O09ke-lC  
} ,1{Ep`  
} hqSJ(gs{  
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