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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。 JJ/1daj  
插入排序: HYjMNj0  
b&lN%+%}  
package org.rut.util.algorithm.support; f {y]  
/OQK/ t63  
import org.rut.util.algorithm.SortUtil; :vc[/<  
/** <i_> y~v`  
* @author treeroot x],8yR)R  
* @since 2006-2-2 O!+nF]V4f  
* @version 1.0 L@{!r=%_>  
*/ )p$\gwr=2  
public class InsertSort implements SortUtil.Sort{ M11"<3]D  
4meidKw]  
/* (non-Javadoc) ] vC=.&]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1Yc%0L(  
*/ hD nM+4D  
public void sort(int[] data) { )Qh>0T+(  
int temp; cS<TmS!  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Qw24/DJK  
} Z69+yOJI  
} N#(jK1` y  
} 8{R_6BS  
! jbEm8bt  
} )!'n&UxPo$  
)\{'fF  
冒泡排序: IK*oFo{C=K  
Y%<`;wK=^  
package org.rut.util.algorithm.support; UF@IBb}0  
#*!+b  
import org.rut.util.algorithm.SortUtil; t *{,Gk  
![^EsgEB*  
/** z 0~j  
* @author treeroot _9D|u<D  
* @since 2006-2-2 #|qm!aGs  
* @version 1.0 #F_'}?09%  
*/ FE/$(7rM  
public class BubbleSort implements SortUtil.Sort{  f>.4-a?  
`WH[DQ  
/* (non-Javadoc) F\>oxttS1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZlthYuJ  
*/ K!3{M!B   
public void sort(int[] data) { Y)$52m5rM  
int temp; blJIto '  
for(int i=0;i for(int j=data.length-1;j>i;j--){ MV%Xhfk  
if(data[j] SortUtil.swap(data,j,j-1); )-=2w-ZX  
} {mNdL J  
} "XCU'_k=  
} f#@S*^%V$  
} \% }raI;Y@  
}<vvxi  
} CV'&4oq  
+0VG[ c\8  
选择排序: A#<vG1  
$bk>kbl P  
package org.rut.util.algorithm.support; aK]7vp+  
E@:Q 'g%  
import org.rut.util.algorithm.SortUtil; KwS`3 6:  
zQ,f5x  
/** 2 =>*O  
* @author treeroot Z.!g9fi8>  
* @since 2006-2-2 egfi;8]E  
* @version 1.0 Osnyd+dJY  
*/ ya:sW5fk  
public class SelectionSort implements SortUtil.Sort { f%c06Un=  
^w>&?A'!  
/* f2NA=%\  
* (non-Javadoc) '<TD6jBs  
* 9oEpPL5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |Eb&}m:E$  
*/ brntE:  
public void sort(int[] data) { ~%`EeJwT  
int temp; |VK:2p^ u  
for (int i = 0; i < data.length; i++) { |V lMma z  
int lowIndex = i; 8=:A/47=J  
for (int j = data.length - 1; j > i; j--) { 'f 3HKn<L  
if (data[j] < data[lowIndex]) { \I;cZ>{u"}  
lowIndex = j; h-7A9:  
} &`\ep9  
} 9qEOgJ  
SortUtil.swap(data,i,lowIndex); [6H}/_nD  
} ]3}feU+  
} bZ/ hgqS  
h0|[etaf  
} V{!lk]p}a  
z OtkC3hY  
Shell排序: f3 !n$lj  
_74UdD{^o  
package org.rut.util.algorithm.support; m=H_?W;  
Vn'?3Eb<  
import org.rut.util.algorithm.SortUtil; >rKhlUD  
zhX;6= X2  
/** 7{-@}j`  
* @author treeroot W,Ty=:qm*  
* @since 2006-2-2 3Y`>6A=  
* @version 1.0 zO%w_7 w  
*/ [UoqIU  
public class ShellSort implements SortUtil.Sort{ Rs2-94$!5  
M+0x;53nz  
/* (non-Javadoc) wazP,9W?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Wm(:P  
*/ 6+iK!&+=  
public void sort(int[] data) { n'yl)HA~>`  
for(int i=data.length/2;i>2;i/=2){ 8)pB_en3sO  
for(int j=0;j insertSort(data,j,i); L?HF'5o  
} ~ 7}]  
} ilv_D~|  
insertSort(data,0,1); >Fyu@u  
} vO]J]][  
'*4iqP R;  
/** ,ijW(95{k  
* @param data )A"jVQjI%w  
* @param j PK+ x6]x  
* @param i gKWzFnW  
*/ uN9e:;  
private void insertSort(int[] data, int start, int inc) { ailG./I+  
int temp; KSc~GP _  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); j{)~QD?  
} jB!W2~Z  
} ZOuR"9]  
} eQ<xp A  
OF8WDo`  
} HyEa_9  
"R23Pi  
快速排序: LJWTSf"f?  
_dr*`yXi  
package org.rut.util.algorithm.support; 3za`>bUN  
E67XPvo1+@  
import org.rut.util.algorithm.SortUtil; MKC$;>i  
7/?DPwbx  
/** Y%g "Y  
* @author treeroot V9T 4 +  
* @since 2006-2-2 aM$=|%9/  
* @version 1.0 K_>/lirE?  
*/ '0RRFO  
public class QuickSort implements SortUtil.Sort{ Ff<)4`J  
B'p5M.6d#:  
/* (non-Javadoc) 4 \ F P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) < eQ[kM  
*/ J)*8|E9P  
public void sort(int[] data) { s`c?:  
quickSort(data,0,data.length-1); j=W@P-  
} ufP Cx|x~  
private void quickSort(int[] data,int i,int j){ >)^N J2Fd  
int pivotIndex=(i+j)/2; < Y>3  
file://swap o8{<qn|  
SortUtil.swap(data,pivotIndex,j); W`x)=y]Z  
skR,-:"8  
int k=partition(data,i-1,j,data[j]); JpK[&/Ct  
SortUtil.swap(data,k,j); +_~,86  
if((k-i)>1) quickSort(data,i,k-1); ~^$MA$/p  
if((j-k)>1) quickSort(data,k+1,j); :!O><eQw  
pds*2p)2  
} 3]^'  
/** <Oa9oM},d  
* @param data Rg&19 }BU  
* @param i -NzTqLBn  
* @param j :Fw?{0  
* @return Vv4H:BK$  
*/ SA+d&H}Fc  
private int partition(int[] data, int l, int r,int pivot) { u!Bk,}CE`  
do{ l3p3tT3+  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); &SmXI5>Bo0  
SortUtil.swap(data,l,r); U:n*<l-k}  
} JYV\oV{  
while(l SortUtil.swap(data,l,r); &XQZs`41+  
return l; ltSh'w0  
} @.ZL7$|d  
76u{!\Jo/{  
} X$V|+lTk  
-~O/NX  
改进后的快速排序: o/1JO_41  
RZh}:  
package org.rut.util.algorithm.support; (6R4 \8z2  
d}-'<Z#G  
import org.rut.util.algorithm.SortUtil; xNX'~B^4d  
j#3m|dQ  
/** 7Z0/(V.-  
* @author treeroot }g{_AiP rv  
* @since 2006-2-2 S+ebO/$>  
* @version 1.0 {ma;G[!  
*/ 4SR(->@  
public class ImprovedQuickSort implements SortUtil.Sort { kA^A mfba  
{|6z+vR  
private static int MAX_STACK_SIZE=4096; gz61FW  
private static int THRESHOLD=10; e$|VG* d  
/* (non-Javadoc) o&$hYy"<.L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c'0 5{C  
*/ 2~FPw{]j  
public void sort(int[] data) { VR4%v9[1  
int[] stack=new int[MAX_STACK_SIZE]; gS$A   
4AHL3@x  
int top=-1; <%KUdkzEP  
int pivot; ? )_7U  
int pivotIndex,l,r; i03gX<=*  
t`u!]DHv  
stack[++top]=0; ~@P)tl>  
stack[++top]=data.length-1; I4il R$jg  
YPszk5hn  
while(top>0){ 1[DS'S  
int j=stack[top--]; UX_I6_&  
int i=stack[top--]; kcS6_l  
3LW[H+k  
pivotIndex=(i+j)/2; _7@z_i_c  
pivot=data[pivotIndex]; ^i`*Wm@!  
h|p[OecG  
SortUtil.swap(data,pivotIndex,j); J]fS({(\I  
IN^_BKQt  
file://partition V@Wcb$mgk  
l=i-1; #DUh(:E'`  
r=j; |C D}<r(N  
do{ nwf7M#3d  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); [5Y<7DS  
SortUtil.swap(data,l,r); <&U!N'CE  
} (WE,dY+.  
while(l SortUtil.swap(data,l,r); D9-Lg%  
SortUtil.swap(data,l,j); =M<z8R  
O,mip  
if((l-i)>THRESHOLD){ Of`c`-<j  
stack[++top]=i; ~G `J r  
stack[++top]=l-1; C3S`}o.  
} -t4 [oB  
if((j-l)>THRESHOLD){ e<5Y94YE  
stack[++top]=l+1; xvDI 4x&  
stack[++top]=j; uvB1VV4  
} };sMU6e  
HmV /> 9  
} \ e,?rH  
file://new InsertSort().sort(data); 5@P-g  
insertSort(data); !kXeO6X@m  
} G9RP^  
/** (F8AL6  
* @param data {oWsh)[x2  
*/ c_1/W{  
private void insertSort(int[] data) { mP-2s;q  
int temp; Y {c5  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <xn;bp[  
} de YyaV  
} aws"3O% uW  
} .7Kk2Y  
& iSD/W  
} Nn#u%xvJt  
9#rt:&xo0  
归并排序: Z@J.1SaB  
5 =Z!hQ}  
package org.rut.util.algorithm.support; Uix{"  
qI2'u%  
import org.rut.util.algorithm.SortUtil; "l,UOv c  
=!,Gst_  
/** O3%[dR  
* @author treeroot s#^pC*,'  
* @since 2006-2-2 f=I:DkR  
* @version 1.0 ~O4|KY  
*/ ~L4eZ  
public class MergeSort implements SortUtil.Sort{ D;js.ZF  
s[c^"@HT  
/* (non-Javadoc) eb!_ie"D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^l!L)iw  
*/ !k<:k "7  
public void sort(int[] data) { ]rW8y%yD  
int[] temp=new int[data.length]; /F~X,lm*~  
mergeSort(data,temp,0,data.length-1); +R[4\ hC0Y  
} J_xG}d  
T:!MBWYe|  
private void mergeSort(int[] data,int[] temp,int l,int r){ 5 09Q0 [k  
int mid=(l+r)/2; K/Y Agg  
if(l==r) return ; zWIeHIt  
mergeSort(data,temp,l,mid); "=|t~`  
mergeSort(data,temp,mid+1,r); T[.[ g/`  
for(int i=l;i<=r;i++){ QzthTX<  
temp=data; yFM>T\@  
} i_U}{|j  
int i1=l; 8$}OS-  
int i2=mid+1; Oif,|:  
for(int cur=l;cur<=r;cur++){ Vxh.<b6&'  
if(i1==mid+1) :oa9#c`L  
data[cur]=temp[i2++]; Y<LNQ]8\G  
else if(i2>r) h&'=F)5  
data[cur]=temp[i1++]; AcC8)xRpk4  
else if(temp[i1] data[cur]=temp[i1++]; O&$0&dhc  
else Iql5T#K+  
data[cur]=temp[i2++]; `Q%NSU?  
} ,Y!zORv<7  
}  Q_4Zb  
OE"<!oIs  
} ((MLM3zJ  
nl@E[yA9[  
改进后的归并排序: xncwYOz  
ybvI?#  
package org.rut.util.algorithm.support; B\_[R'Pf&  
f a5]a  
import org.rut.util.algorithm.SortUtil; OFy,B-`A{  
+1@AGJU3  
/** Rd! 2\|  
* @author treeroot b5 Q NEi  
* @since 2006-2-2 \Ph7(ik  
* @version 1.0 C\Ayv)S #2  
*/ W_<4WG  
public class ImprovedMergeSort implements SortUtil.Sort { iBvOJs  
arj$dAW  
private static final int THRESHOLD = 10; Q}P-$X+/ n  
j Z'&0x"U  
/* ?q Xs-  
* (non-Javadoc) l3J$md|f  
* ;~/4d-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JR1 *|u  
*/ H/jm f5  
public void sort(int[] data) { l{%a&/  
int[] temp=new int[data.length]; dlD}Ub  
mergeSort(data,temp,0,data.length-1); :p-Y7CSSu  
} - ]Y wl  
kwar}:`  
private void mergeSort(int[] data, int[] temp, int l, int r) { (@Zcx9  
int i, j, k; yJ/#"z=h?  
int mid = (l + r) / 2; b UvK  
if (l == r) l)8sw=  
return; 7/>a:02  
if ((mid - l) >= THRESHOLD) abWl ut  
mergeSort(data, temp, l, mid); =kFuJ x)f  
else hKksVi  
insertSort(data, l, mid - l + 1); g42T#p8^  
if ((r - mid) > THRESHOLD) IJPgFZ7  
mergeSort(data, temp, mid + 1, r); se,Z#H  
else 9} *$n&B  
insertSort(data, mid + 1, r - mid); ~3=2=Uf  
/DU*M,  
for (i = l; i <= mid; i++) { kxo.v|)8  
temp = data; ;|30QUYh  
} KO,_6>8]U  
for (j = 1; j <= r - mid; j++) { iz`jDa Q|1  
temp[r - j + 1] = data[j + mid]; V^En8  
} cU+>|'f &  
int a = temp[l]; d8:C3R  
int b = temp[r]; kZ[mM'u#  
for (i = l, j = r, k = l; k <= r; k++) { ]^@0+!  
if (a < b) { e@j8T gI)  
data[k] = temp[i++]; #:{6b *}  
a = temp; @ER1zKK?  
} else { %dmfBf Ev  
data[k] = temp[j--]; Uu5C%9^s  
b = temp[j]; pULsGb  
} Ae3,^  
} e2Jp'93o'  
} 8^X]z|2  
},PBqWe  
/** UC|JAZL  
* @param data fn1pa@P  
* @param l G (\Ckf:  
* @param i RgGA$HN/  
*/ g1qi\axm  
private void insertSort(int[] data, int start, int len) { 8]C1K Zs  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 7) 0q--B  
} 2U%qCfh6|  
} }n95< {  
} [TCRB`nTQF  
} _,Q[2gQ5N  
!K\itOEP-  
堆排序: 8c).8RLf  
mP!N<K  
package org.rut.util.algorithm.support; ) `I=oB  
an KuTI  
import org.rut.util.algorithm.SortUtil; h5!d  
T.@sq  
/** qLRE}$P  
* @author treeroot |nm2Uy/0  
* @since 2006-2-2 $ !5f"<FCB  
* @version 1.0 K:w]> a  
*/ (1 yGg==W.  
public class HeapSort implements SortUtil.Sort{ %#9P?COs&W  
h,]+>`b  
/* (non-Javadoc) xjrlc9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A& =pw#  
*/ stXda@y<p  
public void sort(int[] data) { owM mCR  
MaxHeap h=new MaxHeap(); oD,C<[(p  
h.init(data);  UTX](:TC  
for(int i=0;i h.remove(); wlVvxX3%  
System.arraycopy(h.queue,1,data,0,data.length); BWEv1' v  
} .. UoyBV  
<[9?Rj@  
private static class MaxHeap{ (nz}J)T&  
:c<*%*e  
void init(int[] data){ SG`)PW?  
this.queue=new int[data.length+1]; #eLN1q&Z  
for(int i=0;i queue[++size]=data; O PiaG!3<  
fixUp(size); M.[wKGX(  
} Ff)@L-Y\K  
} P;c0L;/  
(H-cDsh;c  
private int size=0; {]["6V6W  
*(nJX.7  
private int[] queue; +-P<CCvWz  
i[_| %'p  
public int get() { o=mo/N4  
return queue[1]; wA",SBGX  
} y.ql#eQ,  
.C?GW1[c~@  
public void remove() { 4d-q!lRpa  
SortUtil.swap(queue,1,size--); :<UtHf<=k  
fixDown(1); 4k$0CbHx0  
} 97]4 :Zv  
file://fixdown `Sx.|`x8  
private void fixDown(int k) { Yj3*)k  
int j; QQ~23TlA  
while ((j = k << 1) <= size) { yM|g|;U  
if (j < size %26amp;%26amp; queue[j] j++; qmID-t"  
if (queue[k]>queue[j]) file://不用交换 xFX&9^Uk  
break; ['t8C  
SortUtil.swap(queue,j,k); ;q &0,B  
k = j; /f]/8b g>  
} K @C4*?P  
} hiIya WU  
private void fixUp(int k) { ,`"K  
while (k > 1) { 9'X@@6b*'  
int j = k >> 1; _XWnS9  
if (queue[j]>queue[k]) <S{7Ro  
break; e?1KbJ?.  
SortUtil.swap(queue,j,k); e&ts\0  
k = j; +9_,w bF  
} '$*[SauAG  
} D&f!( n  
%r P !  
} WP!il(Gr  
F-tFet  
} dm  2EH  
9.]kOs_  
SortUtil: ,\}k~ U99  
()B7(Y  
package org.rut.util.algorithm; 9R>~~~{-Go  
GVZTDrC  
import org.rut.util.algorithm.support.BubbleSort; "?[7#d])  
import org.rut.util.algorithm.support.HeapSort; -U:2H7  
import org.rut.util.algorithm.support.ImprovedMergeSort; `/c@nxh  
import org.rut.util.algorithm.support.ImprovedQuickSort; I3An57YV].  
import org.rut.util.algorithm.support.InsertSort; 5f{wJb2  
import org.rut.util.algorithm.support.MergeSort; [x|)}P7%s  
import org.rut.util.algorithm.support.QuickSort; ~.H~XK w  
import org.rut.util.algorithm.support.SelectionSort; *F..ZS'$[  
import org.rut.util.algorithm.support.ShellSort; 7P c(<Ui+  
{yU0D*#6  
/** cTy'JT7  
* @author treeroot =G*z 5 3  
* @since 2006-2-2 u9,=po=+7f  
* @version 1.0 aC}p^Nkr"k  
*/ s"N\82z)  
public class SortUtil { Ta^.$O=F  
public final static int INSERT = 1; 2;h+;G  
public final static int BUBBLE = 2; MU*It"@}2  
public final static int SELECTION = 3; cPSti  
public final static int SHELL = 4; pSXEJ 2k  
public final static int QUICK = 5; ?F25D2[(  
public final static int IMPROVED_QUICK = 6; eN4t1 $  
public final static int MERGE = 7; St_S l:m$  
public final static int IMPROVED_MERGE = 8; 1[px`%DR~  
public final static int HEAP = 9; >-eS&rma  
S NN#$8\  
public static void sort(int[] data) { RB *P0  
sort(data, IMPROVED_QUICK); K9^"NS3  
} &AJUY()8  
private static String[] name={ _V&x`ks  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" *cPN\Iu.W  
}; yduuFK  
wZ O@J|  
private static Sort[] impl=new Sort[]{ ^t7_3%%w  
new InsertSort(), 7<vy;"wB  
new BubbleSort(), !9PX\Xbn  
new SelectionSort(), *iYMX[$  
new ShellSort(), ~Z7)x7 z  
new QuickSort(), EFeAr@nj  
new ImprovedQuickSort(), A^t"MYX@  
new MergeSort(), R7,p ukK  
new ImprovedMergeSort(), UL[uh@4  
new HeapSort() z41D^}b  
}; AT-0}9z{  
{x|MA(NO  
public static String toString(int algorithm){ =8@RKG`>;  
return name[algorithm-1]; wzg i @i  
} K` 2i  
16L"^EYq  
public static void sort(int[] data, int algorithm) { |MVV +.X  
impl[algorithm-1].sort(data); ig+k[`W  
} 2G H)iUmc  
:)j7U3u  
public static interface Sort { JOPTc]  
public void sort(int[] data); !#C)99L"F  
} o16d`}/<  
T:Bzz)2/  
public static void swap(int[] data, int i, int j) { KoFv0~8Q  
int temp = data; ? 1GJa]G  
data = data[j]; TX&[;jsj  
data[j] = temp; ~6] )*y  
} $G)&J2zL  
} 75<el.'H  
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