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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。 `C*!de]Y%  
插入排序: VNYLps@4H  
@Qs-A^.  
package org.rut.util.algorithm.support; 1=;QWb6  
m|]^f;7z  
import org.rut.util.algorithm.SortUtil; D+SpSO7yg  
/**  Nr[Rp  
* @author treeroot \OU+Kl<  
* @since 2006-2-2 YjX=@  
* @version 1.0 O h" ^  
*/ i9xv`Ev=R  
public class InsertSort implements SortUtil.Sort{ W1@;94Sb~  
X#3<hN*v  
/* (non-Javadoc) `U g.c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6#KI? 6  
*/ Dz50,*}J  
public void sort(int[] data) { *cf"l  
int temp; 8zc!g|5"  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); + kF[Oh#  
} P+b^;+\1s  
} Oq2H>eW`f  
} *SY4lqN  
Yjl0Pz .q  
} }-L@AC/\#  
5{g9Wh[  
冒泡排序: JG<3,>@%  
/J+)P<_A  
package org.rut.util.algorithm.support; @}?D<O8#"#  
=N{eiJ.(p  
import org.rut.util.algorithm.SortUtil; &tgvE6/V  
2:N_c\Vi  
/** 6g"<i}_|  
* @author treeroot P\ s+2/  
* @since 2006-2-2 O2,g]t~C  
* @version 1.0 W<LaR,7  
*/ >ek%P;2w>  
public class BubbleSort implements SortUtil.Sort{ od}x7RI%m  
'YR5i^:t  
/* (non-Javadoc) w+37'vQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yo.SPd="Vx  
*/ ,>UmKrYo  
public void sort(int[] data) { *i{.@RX?  
int temp; 8QN8bGxK   
for(int i=0;i for(int j=data.length-1;j>i;j--){ d*>k ]X@G  
if(data[j] SortUtil.swap(data,j,j-1); JKT+ q*V  
} ,jnRt%W  
} 3kQ^f=Wd  
} >slN:dr0:  
} (RmED\.]4  
:(b3)K  
} 8e@JvAaa$  
7S2F^,w  
选择排序: |+:ZO5FaO  
z= p  
package org.rut.util.algorithm.support; 4LjSDgA  
oPy zk7{  
import org.rut.util.algorithm.SortUtil; ]R{"=H'  
+2}(]J=-  
/** ,&?q}M  
* @author treeroot t lERis  
* @since 2006-2-2 y|Y3,s  
* @version 1.0 1Kh?JH  
*/ 7h]R{_  
public class SelectionSort implements SortUtil.Sort { 'c[LTpn4=  
[U(&Ae0V>  
/* zzQH@D1  
* (non-Javadoc) 'q'Y:A?,  
* 8~ )[d!'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vEe  
*/ ++!E9GU{  
public void sort(int[] data) { 'TrrOq4  
int temp; i`aG  
for (int i = 0; i < data.length; i++) { YB{E= \~  
int lowIndex = i; mY 8=qkZE  
for (int j = data.length - 1; j > i; j--) { >ij4z N  
if (data[j] < data[lowIndex]) { /V<`L  
lowIndex = j; tMZ(s  
} ?+O|mX}`-  
} d95N$n   
SortUtil.swap(data,i,lowIndex);  GQ0(&I  
} W79A4l<  
} c '+r[rSn1  
;]M67ma7C  
} 'D"K`Vw  
1ysLZ;K  
Shell排序: ]XG n2U\  
9BD|uU;0  
package org.rut.util.algorithm.support; }PIB b  
(I[h.\%  
import org.rut.util.algorithm.SortUtil; '(pd k  
d+2O^of:T  
/** J8v:a`bX&  
* @author treeroot h==GdS4  
* @since 2006-2-2 M y"!j,Up  
* @version 1.0 C9g~l}=$&  
*/ 9T,QW k  
public class ShellSort implements SortUtil.Sort{ '}`hY1v  
a61eH )a  
/* (non-Javadoc) {qWG^Db  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?SOF n  
*/ m=iov 2K>  
public void sort(int[] data) { P>T*:!s;  
for(int i=data.length/2;i>2;i/=2){ h!N&gZ[0  
for(int j=0;j insertSort(data,j,i); y]YS2^  
} wt.{Fqm  
} M}oj!xGB  
insertSort(data,0,1); c^Gwri4  
} , q@(L  
&/hr-5k  
/** T{H#]BF<E  
* @param data aho<w+l@  
* @param j HA.NZkq.tV  
* @param i EOnp!]Y  
*/ ?> MoV5  
private void insertSort(int[] data, int start, int inc) { YeExjC  
int temp; ua|Z`qUyq  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); fA M4Q  
} jbhJ;c:  
} x\bRj>%(  
} W8yfa[z~J  
;Q>3N(  
} W3V{Xk|  
LYy:IBI7_  
快速排序: T3t~=b>&L  
Ul713Bjz  
package org.rut.util.algorithm.support; Fma`Cm.  
mf;^b.mKh  
import org.rut.util.algorithm.SortUtil; h [|zs>p  
dI ZTLb"a  
/** C3 b0`|5  
* @author treeroot mf]( 3ZL  
* @since 2006-2-2 X\^& nLa  
* @version 1.0 svq9@!go  
*/ t2 -nCRXEP  
public class QuickSort implements SortUtil.Sort{ k`7.p,;}U  
zUEfa!#?  
/* (non-Javadoc) 4=F]`Lql  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  `\|3 ~_v  
*/ ptWG@"j/b  
public void sort(int[] data) { BtpjQNN  
quickSort(data,0,data.length-1); x:n9dm  
}  TCKI  
private void quickSort(int[] data,int i,int j){ 2 .Eu+*UC  
int pivotIndex=(i+j)/2; >.O*gv/ _  
file://swap ok>P [ &!  
SortUtil.swap(data,pivotIndex,j); `m@]  
#1jtprc  
int k=partition(data,i-1,j,data[j]); SCh7O}  
SortUtil.swap(data,k,j); 61+pryW%g  
if((k-i)>1) quickSort(data,i,k-1); K* _{Rs0P  
if((j-k)>1) quickSort(data,k+1,j); _> |R-vQ8  
V:F+HMBk  
} Ef_F#X0#  
/** H7tQ#  
* @param data 93^(O8.  
* @param i Hc&uE3=%sL  
* @param j S QM(8*:X  
* @return WJY4>7}{B@  
*/ R%)2(\  
private int partition(int[] data, int l, int r,int pivot) { RlslF9f  
do{ j""y2c1  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); .,ppGc| *  
SortUtil.swap(data,l,r); "doU.U&u  
} o! 2 n}C  
while(l SortUtil.swap(data,l,r); 3!"b guE  
return l; u_p7Mcb  
} |`k1zc)9  
Vyq#p9Q  
} -lP )  
w$b+R8.n)  
改进后的快速排序: y= oVUsG  
(N*<\6kr  
package org.rut.util.algorithm.support; BS-:dyBw  
! =\DC,-CB  
import org.rut.util.algorithm.SortUtil; s#+"5&!s  
_d\u!giy  
/** C"U[ b%  
* @author treeroot rTP5-4  
* @since 2006-2-2 HeT6Dv  
* @version 1.0 /jjW/ lr  
*/ Ere?d~8  
public class ImprovedQuickSort implements SortUtil.Sort { o8};e  
1Es*=zg  
private static int MAX_STACK_SIZE=4096; Y0Hq+7x  
private static int THRESHOLD=10; C>Omng1>^  
/* (non-Javadoc) 2xL!PR-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Mz/]DJ8  
*/ +gbX}jF0%  
public void sort(int[] data) { Q{.{#G  
int[] stack=new int[MAX_STACK_SIZE]; -'O Q-5  
>/!7i3Ow-  
int top=-1; f%Z;05  
int pivot; L@1,7@  
int pivotIndex,l,r; I=4Xv<F  
8 l'bRyuS  
stack[++top]=0; >bX-!<S  
stack[++top]=data.length-1; `N|U"s;  
Xr@l+zr  
while(top>0){ ih+*T1#:(  
int j=stack[top--]; IFd )OZ5  
int i=stack[top--]; ,YP1$gj  
Qq,i  
pivotIndex=(i+j)/2; 6?1s`{yy  
pivot=data[pivotIndex]; l)tTg+:  
Ie G7@  
SortUtil.swap(data,pivotIndex,j);  _DPB?)!x  
e5qrQwU  
file://partition L,Ao.?j  
l=i-1; P3>..fhoW  
r=j; S3ab0JM  
do{ &Q-[;  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); H Z;ZjC*  
SortUtil.swap(data,l,r); w+Z--@\  
} Kcscz,  
while(l SortUtil.swap(data,l,r); %sOWg.0_  
SortUtil.swap(data,l,j); 5u2{n rc  
<ICZ"F`S  
if((l-i)>THRESHOLD){ 1A7%0/K-]  
stack[++top]=i; ~w Zl2I  
stack[++top]=l-1; ]dPVtk  
} T[5gom  
if((j-l)>THRESHOLD){ P &;y] ,)E  
stack[++top]=l+1; Od0S2hHO  
stack[++top]=j; zY7*[!c2  
} (v|r'B9 b  
BA~a?"HS  
} T"L0Iy!k;  
file://new InsertSort().sort(data); Ys"|</;dbj  
insertSort(data); ,vY)n6  
} B<|:K\MA  
/** .ocx(_3G  
* @param data LYd}w(}  
*/ xN#bzma  
private void insertSort(int[] data) { vOos*&  
int temp; $x?NNS_ "J  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?8 SK\{9r6  
} AuoxZ?V  
} DJm oW  
} A)\>#Dv  
;;ER"N  
} y bo#K  
DRH'A!r!  
归并排序: 7%{R#$F  
kP7a:(P_g  
package org.rut.util.algorithm.support; 7cIC&(h5  
i LF^%!:X%  
import org.rut.util.algorithm.SortUtil; k4S} #!  
l% rx#;=u  
/** p]wP36<S!  
* @author treeroot uz]E_&2  
* @since 2006-2-2 :|Z$3q  
* @version 1.0 . _1jk  
*/ g d z  
public class MergeSort implements SortUtil.Sort{ .CVUEK@Z4  
k1wCa^*gc  
/* (non-Javadoc) "e~k-\^Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %4j&H!y-w;  
*/ ;knd7SC   
public void sort(int[] data) { :ar?0  
int[] temp=new int[data.length]; xKY$L*  
mergeSort(data,temp,0,data.length-1); cvKV95bn  
} Q m $(  
-u6}T!  
private void mergeSort(int[] data,int[] temp,int l,int r){ }KK2WJp#M  
int mid=(l+r)/2; }0$mn)*k  
if(l==r) return ; 3>i>@n_  
mergeSort(data,temp,l,mid); ;4!=DFbU  
mergeSort(data,temp,mid+1,r); I^WIa"u_  
for(int i=l;i<=r;i++){ BR;QY1  
temp=data; %m oJF1  
} Iph3%RaE  
int i1=l; \;-qdV_JB  
int i2=mid+1; ;SfNKu  
for(int cur=l;cur<=r;cur++){ U);OR  
if(i1==mid+1) 6^Ph '  
data[cur]=temp[i2++]; {]=v]O |,  
else if(i2>r) IQT cYl  
data[cur]=temp[i1++]; 3=Z<wD s  
else if(temp[i1] data[cur]=temp[i1++]; {] O`g G  
else 2-~a P  
data[cur]=temp[i2++]; wDDxj  
} gF3TwAr  
} lY.B  
B]1HS`*7  
} QjLji +L  
(zY *0lN  
改进后的归并排序: kGm:VYf%  
So#dJ>   
package org.rut.util.algorithm.support; iSlFRv?a  
o w2$o\hC  
import org.rut.util.algorithm.SortUtil; =HMmrmz:  
Raefj(^V  
/** 1  o|T  
* @author treeroot <{giHT  
* @since 2006-2-2 BBvZeG $Y  
* @version 1.0 L!gDFZr  
*/ jPnO@ H1  
public class ImprovedMergeSort implements SortUtil.Sort { z!:'V]  
M`~!u/D7  
private static final int THRESHOLD = 10; sMH#BCC  
va5FxF*%  
/* _F izgs  
* (non-Javadoc) \83sSw  
* "IG+V:{ou  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k^^:;OR  
*/ uArR\k(  
public void sort(int[] data) { 2/@D7>F&g  
int[] temp=new int[data.length]; >\Z R*CS  
mergeSort(data,temp,0,data.length-1); k5@d! }#c  
} E:FO_R(Xq  
%w7m\nw@  
private void mergeSort(int[] data, int[] temp, int l, int r) { S8%n.<OB  
int i, j, k; JvkL37^ n:  
int mid = (l + r) / 2; ^n9a " qz  
if (l == r) ,-@5NY1q  
return; |z~LzSJv  
if ((mid - l) >= THRESHOLD) &3Tx@XhO  
mergeSort(data, temp, l, mid); x5OC;OQc  
else 1kmQX+f  
insertSort(data, l, mid - l + 1); O% -h&C3  
if ((r - mid) > THRESHOLD) 7 jjU  
mergeSort(data, temp, mid + 1, r); VFO \4:.  
else [?KJ9~+0  
insertSort(data, mid + 1, r - mid); t+Z`n(>  
?U_9{}r  
for (i = l; i <= mid; i++) { 1TjZ#yP%1  
temp = data; <*u C  
} bD<qNqX$  
for (j = 1; j <= r - mid; j++) { }E;F)=E  
temp[r - j + 1] = data[j + mid]; S5_t1wqBJ  
} wVqd$nsY"  
int a = temp[l]; [9V]On  
int b = temp[r]; F}U5d^!2  
for (i = l, j = r, k = l; k <= r; k++) { #dc1pfL!y{  
if (a < b) { )p8I @E  
data[k] = temp[i++]; B,_`btJh  
a = temp; ''S&e  
} else {   \&a.}t  
data[k] = temp[j--]; . uR M{Bs  
b = temp[j]; m=TJDr-  
} g_w&"=.jBq  
} 9cd8=][  
} K)S;:MLG=  
z856 nl  
/** >|3a 9S  
* @param data rGlRAn#?,  
* @param l 5j{Np,K  
* @param i r7 VXeoX  
*/ NP/>H9Q2%  
private void insertSort(int[] data, int start, int len) { s /%:dnij  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); K=6UK%y A  
} \DA$6w\\  
} \Hwg) Uc{  
} +y&d;0!  
} ?t rV72D  
`.=sTp2rbc  
堆排序: Z0ReWrl;`  
~ y;y(4<  
package org.rut.util.algorithm.support; jxw_*^w"  
R8&|+ya  
import org.rut.util.algorithm.SortUtil; <y)E>Fl  
nrpI5t.b  
/** M3pjXc<O  
* @author treeroot f v LC_'M  
* @since 2006-2-2 +a|/l  
* @version 1.0 }Qrab#v  
*/ '#Dg8/r!  
public class HeapSort implements SortUtil.Sort{ {J]-<:XD  
YQgNv` l}  
/* (non-Javadoc) :Q@)*kQH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /smiopFcq  
*/ dqe7sZl!  
public void sort(int[] data) { [vTMS2  
MaxHeap h=new MaxHeap(); ZA\/{Fw  
h.init(data); @Bs0Avj.  
for(int i=0;i h.remove(); mm[SBiFO\  
System.arraycopy(h.queue,1,data,0,data.length); otr>3a*'  
} B@t'U=@7  
"tu*YNP\Q  
private static class MaxHeap{ 5Qa zHlJ  
]Kde t"+  
void init(int[] data){ Q$ZHv_VLx  
this.queue=new int[data.length+1]; V 0{tap}  
for(int i=0;i queue[++size]=data; w([$@1]  
fixUp(size); sR=/%pVN  
}  k0H#:c}  
} z.)p P'CJo  
P<;7j?  
private int size=0; ?KWj}| %  
I*\^,ow  
private int[] queue; ml u 3K  
~ 3T,&?r  
public int get() { &L4 q10-N  
return queue[1]; J]pa4C`  
} eThy+  
ULBg {e?l8  
public void remove() { UQT'6* !  
SortUtil.swap(queue,1,size--); .q;ED`G  
fixDown(1); Hl7:*]l7b  
} ijUzC>O+q  
file://fixdown :&VcB$  
private void fixDown(int k) { z4 M1D9iPY  
int j; ftZj}|R!  
while ((j = k << 1) <= size) { @Doyt{|T  
if (j < size %26amp;%26amp; queue[j] j++; .T.5TMiOSq  
if (queue[k]>queue[j]) file://不用交换 NZXjE$<Vr  
break; q'S =Eav8  
SortUtil.swap(queue,j,k); Bw< rp-  
k = j; Z1,gtl ?  
} Hs0pW5oZ  
} >q7 %UK]&  
private void fixUp(int k) { &ak6zM  
while (k > 1) { gPEqjj  
int j = k >> 1; y,m2(V  
if (queue[j]>queue[k]) H{fM%*w  
break; 6C-YyI#s#  
SortUtil.swap(queue,j,k); 8_we: 9A  
k = j; (P@Y36j>N  
} I cF@F>>  
} 85]SC$  
:tGYs8UK  
} 61K"(r~  
< {ru|-9  
} d"T Ht}  
Q9>U1]\  
SortUtil: (f1M'w/OD  
[}o~PN:sT(  
package org.rut.util.algorithm; k%Vv?{g  
H\G{3.T.9  
import org.rut.util.algorithm.support.BubbleSort; jqcz\n d  
import org.rut.util.algorithm.support.HeapSort; GJQc!cqk  
import org.rut.util.algorithm.support.ImprovedMergeSort; Yx)o:#2  
import org.rut.util.algorithm.support.ImprovedQuickSort; I6w~H?ul@*  
import org.rut.util.algorithm.support.InsertSort; B)=~8wsI:Z  
import org.rut.util.algorithm.support.MergeSort; ($!KzxF3  
import org.rut.util.algorithm.support.QuickSort; rVryt<2:@r  
import org.rut.util.algorithm.support.SelectionSort; ZX.TqvK/r  
import org.rut.util.algorithm.support.ShellSort; {aj/HFLNY  
%c/^_.  
/** %:u[MBe,  
* @author treeroot $Ua56Y  
* @since 2006-2-2 i|$z'HK;+  
* @version 1.0 Ax<\jW<  
*/ Z<z;L<tJ 9  
public class SortUtil { VOgi7\  
public final static int INSERT = 1; R p.W,)i  
public final static int BUBBLE = 2; eaZQ2  
public final static int SELECTION = 3; 7 'w0  
public final static int SHELL = 4; Q/^A #l[  
public final static int QUICK = 5; s ic$uT  
public final static int IMPROVED_QUICK = 6; N:BL=} V  
public final static int MERGE = 7; Dpqt;8"2L  
public final static int IMPROVED_MERGE = 8; 2(#Ks's?  
public final static int HEAP = 9; F=wRkU  
:Jxh2  
public static void sort(int[] data) { :nGMtF  
sort(data, IMPROVED_QUICK); \e:d)^cbh  
} ;j} yB  
private static String[] name={ x8N|($1  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" WS0JS'  
}; Ex(3D[WmMW  
;Ss$2V'a  
private static Sort[] impl=new Sort[]{ TMj4w,g4  
new InsertSort(), fEnQE EU~P  
new BubbleSort(), nkY@_N  
new SelectionSort(), !,&yyx.  
new ShellSort(), EESN\_{~.  
new QuickSort(), dbF M,"^  
new ImprovedQuickSort(), j$@tK0P  
new MergeSort(), `rFAZcEj%  
new ImprovedMergeSort(), mP}#Ccji?  
new HeapSort() Np,2j KF(  
}; =,/D/v$m'2  
xAdq+$><  
public static String toString(int algorithm){ d>i13d AI  
return name[algorithm-1]; _a -]?R  
} {BV4h%P]:  
XB\zkf_}Xc  
public static void sort(int[] data, int algorithm) { 6Z! y  
impl[algorithm-1].sort(data); 'ZHdV,dd  
} p+w8$8)  
T[uDZYx  
public static interface Sort { O.+9,4A(  
public void sort(int[] data); $RO$}!  
} wyY*:{lZ  
o'= VZT9  
public static void swap(int[] data, int i, int j) { _6LoVS  
int temp = data; -T_\f?V88  
data = data[j]; _j ;3-m  
data[j] = temp; t&RruwN_;  
} O!F]^'!  
} B;t=B_oK  
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