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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。 Jw^+t)t  
插入排序: X >**M  
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package org.rut.util.algorithm.support; xM*v!J,  
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import org.rut.util.algorithm.SortUtil; k~gQn:.Cx  
/** b6i0_fOO  
* @author treeroot E=B9FIx~<  
* @since 2006-2-2 COT;KC6 n  
* @version 1.0 3! +5MsR+  
*/ QO,y/@Ph  
public class InsertSort implements SortUtil.Sort{ "K@os<  
`?$R_uFh:  
/* (non-Javadoc) #8RQ7|7b|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z4e?zY  
*/ a0n F U  
public void sort(int[] data) { RsY<j& f  
int temp; !!QMcx_C#/  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5p>a]gp  
} +]__zm/^  
} vS X 6~m  
} 0#q_LB  
ZNUV Bi  
} a@7we=!  
"[8](3\v  
冒泡排序: tSm|U<  
8'?e4;O  
package org.rut.util.algorithm.support; D( _a Xy  
)~5`A*Ku  
import org.rut.util.algorithm.SortUtil; Ve=0_GR0  
dRu@5 :BP  
/** FCI T+ 8K  
* @author treeroot H"-p^liw  
* @since 2006-2-2 8Yj(/S3y  
* @version 1.0 !Khsx  
*/ Sd)D-S  
public class BubbleSort implements SortUtil.Sort{ )jH"6my_  
,:#prT[P"  
/* (non-Javadoc) !qcR5yk`2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W<x2~HW(  
*/ ;Y~;G7  
public void sort(int[] data) { L7KHs'c*  
int temp; 9<Bf5d   
for(int i=0;i for(int j=data.length-1;j>i;j--){ jf})"fz-*  
if(data[j] SortUtil.swap(data,j,j-1); K=~h1qV:  
} >g F  
} ZSbD4 |_  
} +J^}"dG  
} vI+PL(T@  
rbJ-vEzo.#  
} 2V  
Ek 4aC3  
选择排序: {o]OxqE@  
2{ptV\f]D  
package org.rut.util.algorithm.support; SKYS6b  
$GYy[-.`  
import org.rut.util.algorithm.SortUtil; JL*-L*|Zcl  
8gx^e./  
/** 3)T5}_  
* @author treeroot \Q3m?)X=Gd  
* @since 2006-2-2 K_My4>~Il  
* @version 1.0 R{*p \;  
*/ 8Mp  
public class SelectionSort implements SortUtil.Sort { mB!81%f%|  
;z[yNW8  
/* mMa7Eyaf  
* (non-Javadoc) CjO/q)vV  
* #4|?;C)u\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9,9( mbWJv  
*/ fs`<x*}K  
public void sort(int[] data) { xXyzzr1[  
int temp; }b+=,Sc"  
for (int i = 0; i < data.length; i++) { k1%Ek#5  
int lowIndex = i; (57x5qP X  
for (int j = data.length - 1; j > i; j--) { `HHbQXB  
if (data[j] < data[lowIndex]) { fygy#&}~  
lowIndex = j; - BocWq\  
} %i^%D  
} htkyywv  
SortUtil.swap(data,i,lowIndex); 7u!p.kN  
} t%=ylEPW  
} *rqih_j0  
"PlM{ZI\  
} t=U[ ;?  
KRz\ct|  
Shell排序: i1scoxX3\  
O,DA{> *m  
package org.rut.util.algorithm.support; M,<%j  
v|`)~"~  
import org.rut.util.algorithm.SortUtil; z?cRsqf  
}]f)Fz  
/** .&L#%C  
* @author treeroot i/WYjo  
* @since 2006-2-2 D'</eJ  
* @version 1.0 #$#{QEh0}  
*/ mDo]5 i<  
public class ShellSort implements SortUtil.Sort{ ?B[Z9Ef"8l  
w%L0mH2]ng  
/* (non-Javadoc)  m>a6,#I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) < 'T6k\  
*/ VGe/;&1h  
public void sort(int[] data) { |&C.P?q  
for(int i=data.length/2;i>2;i/=2){ (D))?jnC  
for(int j=0;j insertSort(data,j,i); AJq'~fC;I  
} 8mMrGf[Q\  
} H,?AaM[V  
insertSort(data,0,1); 2o{Fp7l  
} J4x1qY)Y&v  
56L>tP  
/** ##FN0|e&  
* @param data !5[?n3  
* @param j E|ZY2&J`4  
* @param i Kr8p:$D};  
*/ %Uuhi&PA-l  
private void insertSort(int[] data, int start, int inc) { =:#$_qR  
int temp; rj,Sk~0Q  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); D3MuP p-v  
} ww[STg  
} ~C[R%%Gu  
} qA*QFQ'-  
uD<*g(R  
} [=XsI]B\  
TCB<fS~U-  
快速排序: & {B,m%G  
)0/ D Y  
package org.rut.util.algorithm.support; `<[Zs]Fe4  
%M ~X:A;4  
import org.rut.util.algorithm.SortUtil; Inr ~9hz  
v6iV#yz3(  
/** jb77uH_  
* @author treeroot 4(o0I~hpB?  
* @since 2006-2-2 X8Gw8^t  
* @version 1.0 A4'v Jk  
*/ "bC8/^  
public class QuickSort implements SortUtil.Sort{ O@Xl_QNxc!  
+-xA/nU.c  
/* (non-Javadoc) _Z2VS"yH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }Z2Y>raA\  
*/ LkJ3 :3O  
public void sort(int[] data) { b7HS 3NYk  
quickSort(data,0,data.length-1); IDcu#Nz`  
} (swP#t5S  
private void quickSort(int[] data,int i,int j){ 0*h\/!e  
int pivotIndex=(i+j)/2; _:=w6jCk  
file://swap E7y<iaA{~  
SortUtil.swap(data,pivotIndex,j); [NJ!  
+dR$;!WB3  
int k=partition(data,i-1,j,data[j]); /k7`TUK  
SortUtil.swap(data,k,j); o#E z_D[  
if((k-i)>1) quickSort(data,i,k-1); -rU *)0PR  
if((j-k)>1) quickSort(data,k+1,j); ?^k-)V  
T w/CJg  
} nuXaZRH  
/** [f^~Z'TIN/  
* @param data b) .@ xS  
* @param i )|\72Z~eq  
* @param j AnIENJ  
* @return 3\6jzD  
*/ :0#!=  
private int partition(int[] data, int l, int r,int pivot) { eF:6k qg  
do{ G4ZeO:r  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); :m-HHWMN  
SortUtil.swap(data,l,r); 6ffrV  
} 2Xgn[oI{  
while(l SortUtil.swap(data,l,r); B*,9{g0m/  
return l; /ptIxe  
} i7*4hYY  
^D/*Hp _  
} 5GC{)#4  
YAd.i@^  
改进后的快速排序: aS:17+!  
82>zu}  
package org.rut.util.algorithm.support; ~pwp B2c  
7nfQ=?XNK  
import org.rut.util.algorithm.SortUtil; =7#)8p[  
v-&^G3  
/** 2I6c7H s  
* @author treeroot BQt!L1))  
* @since 2006-2-2 TQYud'u/  
* @version 1.0 Rl<~:,D  
*/ ~(G]-__B<  
public class ImprovedQuickSort implements SortUtil.Sort { F|Jo|02  
A*E$_N  
private static int MAX_STACK_SIZE=4096; g9p#v$V  
private static int THRESHOLD=10; \tU91 VIj  
/* (non-Javadoc) 1+Ja4`o,iS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0=7C-A1(D  
*/ Xg#Dbf4  
public void sort(int[] data) { e6#^4Y/+`  
int[] stack=new int[MAX_STACK_SIZE]; .2Gn)dZU  
d\xh>o  
int top=-1; -KbT[]  
int pivot; Cv~t~  
int pivotIndex,l,r; Ca]vK'(  
9A)(K,  
stack[++top]=0; =as]>?<  
stack[++top]=data.length-1; rVFAwbR  
N!r@M."  
while(top>0){ xlS t  
int j=stack[top--]; ~ia#=|1}  
int i=stack[top--]; a)[tkjU  
$UO7AHk  
pivotIndex=(i+j)/2; ; #e-pkV  
pivot=data[pivotIndex]; ) T 3y,*  
d v"  
SortUtil.swap(data,pivotIndex,j); |L<oKMZY  
\S1WF ?<,  
file://partition ogDyrY}]  
l=i-1; V#C[I~l  
r=j; t9W_ [_a9  
do{ Vz51=?75  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); js'* :*7  
SortUtil.swap(data,l,r); Xpjk2[,  
} !9OAMHa*9  
while(l SortUtil.swap(data,l,r); My Af~&Y+  
SortUtil.swap(data,l,j); ,7k)cNstW  
;]+kC  
if((l-i)>THRESHOLD){ NuW9.6$Jrf  
stack[++top]=i; 2}' &38wMT  
stack[++top]=l-1; RhXX/HFk  
} + ECV|mkk  
if((j-l)>THRESHOLD){ .K;*uq:0  
stack[++top]=l+1; \d%&_rp  
stack[++top]=j; ` _[\j]  
} $Ob]JAf}  
23&;28)8  
} {Km|SG[-q  
file://new InsertSort().sort(data); XR]]g+Z  
insertSort(data); J4xt!RW!  
} ${0Xq k  
/** ,Ix7Yg[  
* @param data JKGUg3\~  
*/ jpT!di  
private void insertSort(int[] data) { [t,grdw  
int temp; A&)P_B1|  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); W)$;T%u  
} o7&Z4(V  
} !5Z?D8dcx  
} Su6ZO'[)  
:G,GHU'/78  
}  H[fD >  
u;J9aKD  
归并排序: R~[ u|EC}  
,|?B5n&  
package org.rut.util.algorithm.support; ^L<1S/~)  
L&q~5 9  
import org.rut.util.algorithm.SortUtil; ps_CQh0  
?r2Im5N  
/** I&1h/  
* @author treeroot R qOEQ*k  
* @since 2006-2-2 SL>>]A,E<`  
* @version 1.0 >c8zMd  
*/ VBBqoyP h  
public class MergeSort implements SortUtil.Sort{ "?}QwtUW  
 Js'COO  
/* (non-Javadoc) l?Bv9k.^?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3eFD[c%mN  
*/ ir3iW*5k  
public void sort(int[] data) { l{_>?]S5  
int[] temp=new int[data.length]; Pg|q{fc  
mergeSort(data,temp,0,data.length-1); m -7^$  
} VS1gg4tCv  
ex&&7$CXc  
private void mergeSort(int[] data,int[] temp,int l,int r){ MoO jM&9  
int mid=(l+r)/2; laKMQLtv  
if(l==r) return ; NJLU +b yU  
mergeSort(data,temp,l,mid); d #y{eV$Q  
mergeSort(data,temp,mid+1,r); ^5QSV\X  
for(int i=l;i<=r;i++){ RkP7}ZA;  
temp=data; ^V_vpr]}P  
} z2wR]G5!  
int i1=l; Q^ bG1p//.  
int i2=mid+1; h&;\   
for(int cur=l;cur<=r;cur++){ fb&K.6"  
if(i1==mid+1) ~|R"GloUw  
data[cur]=temp[i2++]; OKxPf]~4E  
else if(i2>r) ?Ju=L|  
data[cur]=temp[i1++]; C Vyq/X  
else if(temp[i1] data[cur]=temp[i1++]; dD@T}^j *|  
else sW@4r/F>:D  
data[cur]=temp[i2++]; UOT~L4 G  
} +twJHf_U  
} e8--qV#<  
ib ;:*  
} c]t =#  
+q1 @8  
改进后的归并排序: =y[eQS$  
/XtxgO\T.  
package org.rut.util.algorithm.support; xAon:58m{  
*`=V"nXw$|  
import org.rut.util.algorithm.SortUtil; lf[ (  
NrhU70y  
/** ^h4Q2Mv o  
* @author treeroot *.ZV.(  
* @since 2006-2-2 8.'%wOU @A  
* @version 1.0 /'!F \ kz  
*/ +w%MwPC7`  
public class ImprovedMergeSort implements SortUtil.Sort { ){L`hQ*=w  
v|CRiwx  
private static final int THRESHOLD = 10; J:M^oA'N:>  
P_lk4 0X  
/* f:=q=i  
* (non-Javadoc) {*yhiE,  
* *"q ~z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q J@XVN4   
*/ 0_,V}  
public void sort(int[] data) { _N.ZpKVu  
int[] temp=new int[data.length]; hXmW,+1  
mergeSort(data,temp,0,data.length-1); I>C;$Lp]  
} L+9a4/q  
*-Z JF6  
private void mergeSort(int[] data, int[] temp, int l, int r) { !H~G_?Mf\O  
int i, j, k; 0waQw7 E  
int mid = (l + r) / 2; [1G4he%  
if (l == r) Mp7r`A,6  
return; Y[ a$~n^:n  
if ((mid - l) >= THRESHOLD) Vdh5s292h  
mergeSort(data, temp, l, mid); W 29@`93  
else ;_1D-Mf  
insertSort(data, l, mid - l + 1); :&9#p% /  
if ((r - mid) > THRESHOLD) N=)N   
mergeSort(data, temp, mid + 1, r); y*2:(nI  
else KR?-<  
insertSort(data, mid + 1, r - mid); (VU: &.  
;~tKNytD`B  
for (i = l; i <= mid; i++) { dHg[0Br)r  
temp = data; f*p=]]y  
} Y{f;qbEQH'  
for (j = 1; j <= r - mid; j++) { u2@:[:Ao  
temp[r - j + 1] = data[j + mid]; +p>tO\mo  
} @0-<|,^]  
int a = temp[l]; J XbG|L  
int b = temp[r]; )zz"DH  
for (i = l, j = r, k = l; k <= r; k++) { Jd7+~isu~  
if (a < b) { ,M5zhp$  
data[k] = temp[i++]; #92MI#|n9  
a = temp; <vhlT#p   
} else { m7cp0+Peo  
data[k] = temp[j--]; [Xg?sdQCI  
b = temp[j]; u\Tq5PYXt  
} "b|qyT* Sl  
} = 0Z}s  
} ./rNq!*a  
:>\i  
/** m';:):  
* @param data @'7'3+ c  
* @param l ,4)zn6tC  
* @param i C8e{9CF  
*/ qI5_@[S*  
private void insertSort(int[] data, int start, int len) { 3tA6r  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 8%U+y0j6b  
} 0\k2F,:%4  
} "!+q0l1]@  
} p*8=($j4  
} ?2E@)7  
-'*B%yy  
堆排序: N0vr>e`  
K*d+pImrV  
package org.rut.util.algorithm.support; Vyf r>pgW1  
G  ZDyw9  
import org.rut.util.algorithm.SortUtil; 8I$>e (  
*/u_RJ  
/** F $^RM3  
* @author treeroot `!K(P- yB?  
* @since 2006-2-2 +A>>Ak|s  
* @version 1.0 <V5(5gx  
*/ ^"(C Zvq  
public class HeapSort implements SortUtil.Sort{ O>IY<]x>L  
:uSo 2d  
/* (non-Javadoc) H"=%|/1M0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @aAB#,  
*/ @ 4#q  
public void sort(int[] data) { '-N `u$3Y  
MaxHeap h=new MaxHeap(); HQCxO?  
h.init(data); *:{s|18Pj  
for(int i=0;i h.remove(); mCb(B48]%X  
System.arraycopy(h.queue,1,data,0,data.length); F>d B@V-  
} sf<S#;aYqn  
YC8wo1;Y!  
private static class MaxHeap{ K`{P/w  
? %XTD39  
void init(int[] data){ C& BRyo  
this.queue=new int[data.length+1]; A<fKO <d  
for(int i=0;i queue[++size]=data; WYSqnmi  
fixUp(size); WXV(R,*Tc  
} WK)hj{k  
} PV$)k>H-  
't.I YBHx  
private int size=0; n?!XNXb  
S81% iz.n  
private int[] queue; BZ* ',\o  
2FU+o\1 %  
public int get() { 1LYz X;H1  
return queue[1]; t(AW2{%}  
} VHyH't_&s  
X'Q?Mh  
public void remove() { ]Wr2 IM  
SortUtil.swap(queue,1,size--); %A64AJZ  
fixDown(1); T$rhz)_q  
} v3PtiKS  
file://fixdown `@TWZ%f6  
private void fixDown(int k) { d9e_slx  
int j; Kh&W\\K  
while ((j = k << 1) <= size) { 'K&^y%~py,  
if (j < size %26amp;%26amp; queue[j] j++; VRU"2mQ.P6  
if (queue[k]>queue[j]) file://不用交换 d!0iv'^t  
break; ,.DTJ7H+  
SortUtil.swap(queue,j,k); E:vgG|??  
k = j; H1>~,zc>E  
} {*mf Is  
} 7+ +Fak  
private void fixUp(int k) { -Pt.  
while (k > 1) { \]<e Lw- v  
int j = k >> 1; G\&9.@`k  
if (queue[j]>queue[k]) mv] .  
break; -UY5T@as  
SortUtil.swap(queue,j,k); : N9,/-s  
k = j; E+z),"QA  
} + OKk~GYf  
} k;/K']4y  
TWE>"8]  
} 2iM]t&^<+  
K|L&mL&8  
} b3.  
[l44,!Z&  
SortUtil: E$SYXe[,  
2_T2?weD5  
package org.rut.util.algorithm; Ig&H0S  
WbJ|]}hJ\  
import org.rut.util.algorithm.support.BubbleSort; pPL)!=o!  
import org.rut.util.algorithm.support.HeapSort; HQ /D)D  
import org.rut.util.algorithm.support.ImprovedMergeSort; CWT#1L=  
import org.rut.util.algorithm.support.ImprovedQuickSort; ]2E#P.-!b  
import org.rut.util.algorithm.support.InsertSort; +MZsL7%  
import org.rut.util.algorithm.support.MergeSort; dCA| )  
import org.rut.util.algorithm.support.QuickSort; 9K!kU6Gh  
import org.rut.util.algorithm.support.SelectionSort; .`p,pt;  
import org.rut.util.algorithm.support.ShellSort; gGZ-B<  
5 EhOvt8  
/** 3JYhF)G  
* @author treeroot :1asY:)vNP  
* @since 2006-2-2 B(|*u  
* @version 1.0 @ TJx U  
*/ tTEw"DL_-  
public class SortUtil { 5 w-Pq&q  
public final static int INSERT = 1; $8>kk  
public final static int BUBBLE = 2; f \ E9u}  
public final static int SELECTION = 3; +Vv+<M  
public final static int SHELL = 4; l bs0i  
public final static int QUICK = 5; Xwp6]lx  
public final static int IMPROVED_QUICK = 6; m^!Kthq  
public final static int MERGE = 7; 0<i8 ;2KD  
public final static int IMPROVED_MERGE = 8; i?wEd!=w  
public final static int HEAP = 9; T.(C`/VM  
ZLDO&}  
public static void sort(int[] data) { "DO|B=EejP  
sort(data, IMPROVED_QUICK); |N5r_V  
} ~ =GwNo_  
private static String[] name={ P2Jo^WS  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" RGgePeaw  
}; ^F)t>K$0m  
Mz7qC3Z  
private static Sort[] impl=new Sort[]{ knn9s0'Q  
new InsertSort(), nsL"'iQ  
new BubbleSort(), b>h L*9  
new SelectionSort(), gmqA 5W~y  
new ShellSort(), &]"Z x0t5%  
new QuickSort(), 'XJqh|G  
new ImprovedQuickSort(), LZtO Q__B)  
new MergeSort(), &|-jU+r}B  
new ImprovedMergeSort(), ?B+]Ex(\B,  
new HeapSort() {x,d9I  
}; )\KU:_l  
~xLo0EV "  
public static String toString(int algorithm){ oRo[WQla  
return name[algorithm-1]; ~4+ICCbH  
} M!YGv   
A$g'/QM  
public static void sort(int[] data, int algorithm) { BT)PD9CN(  
impl[algorithm-1].sort(data); WA6reZ  
} P5KpFL`B  
'4Drs}j5  
public static interface Sort { P3!JA)p6a  
public void sort(int[] data); `pb=y}  
} D\^mh{q(  
5BJn_<  
public static void swap(int[] data, int i, int j) { H Y~[/H+:  
int temp = data; vA"LV+@  
data = data[j]; ."Kp6s`k  
data[j] = temp; gy1R.SN  
} 9Y:Iha`$w  
} L\hid /NL  
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