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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。 4zBcq<R7  
插入排序: ashVV~\8A  
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package org.rut.util.algorithm.support; s>>lf&7  
,d=Dicaz  
import org.rut.util.algorithm.SortUtil; b+CvA(*  
/** gKPqU@$*  
* @author treeroot : 9zEne4  
* @since 2006-2-2 k9\n='OI  
* @version 1.0  f|yq~3x)  
*/ 3zM>2)T-  
public class InsertSort implements SortUtil.Sort{ WS@8Z0@RD  
Dl}va  
/* (non-Javadoc) S|IDFDn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ??P3gA  
*/ sP8_Y,  
public void sort(int[] data) {  |FFM Q"  
int temp; g^\>hjNX  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2Myz[)<P_  
} i.ivHV~ -  
} ty9(mtH+  
} aprgThoD  
@XKVdtG  
} 0=OvVU;P  
Ftu d6  
冒泡排序: o 7&q  
f_QZ ql  
package org.rut.util.algorithm.support; f{]W*!VV-  
GMob&0l8_  
import org.rut.util.algorithm.SortUtil; ~@D!E/hZx  
l~*d0E-$  
/** M3)Id?|]6  
* @author treeroot Vt4,?"  
* @since 2006-2-2 2-"`%rE  
* @version 1.0 MPsm)jqX  
*/ 9v}vCg  
public class BubbleSort implements SortUtil.Sort{ fEyc3K'5V  
$[(FCS  
/* (non-Javadoc) ;, u7)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?T[K{t;~jo  
*/ M;@/697G  
public void sort(int[] data) { `{J(S'a`  
int temp; >9Y0t^Fl  
for(int i=0;i for(int j=data.length-1;j>i;j--){ \Q,5Ne'o  
if(data[j] SortUtil.swap(data,j,j-1); *eUxarI  
} "LVN:|!  
} +n<;);h  
} yf e4}0}  
} 0:>C v<N  
Yp9%u9tNq  
} bLz('mUY  
Ng1[y4R}  
选择排序: X.ZY1vO  
Z3A"GWY  
package org.rut.util.algorithm.support; 62/tg*)  
)7N$lY<  
import org.rut.util.algorithm.SortUtil; B]cV|S|  
5U JMiwP{  
/** <d3N2  
* @author treeroot t$U eks  
* @since 2006-2-2 +r__>V,  
* @version 1.0 Be0v&Q_NK  
*/ |DoD.?v  
public class SelectionSort implements SortUtil.Sort { ,#80`&\%  
)/?s^D$,  
/* 4= hz4(5a  
* (non-Javadoc) YR68'Sft[  
* GG`;c?d@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6C*4' P9>  
*/ jR,3 -JQ  
public void sort(int[] data) { dv \aP  
int temp; k.#[h@Pm  
for (int i = 0; i < data.length; i++) { #K[6Ai=We}  
int lowIndex = i; VK$s+"  
for (int j = data.length - 1; j > i; j--) { ,6^V)F  
if (data[j] < data[lowIndex]) { e&XJK*Wf   
lowIndex = j; ~2U5Wt  
} )%(H'omvl  
} T Z@S?r>^  
SortUtil.swap(data,i,lowIndex); uB3Yl =P  
} @>hXh +!2h  
} -- |L?-2k,  
u]QG^1.qYe  
} 'xc=N  
o7s<G8;?  
Shell排序: UL\gcZ Zkl  
IgtTYxI  
package org.rut.util.algorithm.support; aboA9pwH  
NpxND0  
import org.rut.util.algorithm.SortUtil; -D,kL  
JAcNjzL  
/** e!O:z   
* @author treeroot n%:&N   
* @since 2006-2-2 Gw}b8N6E  
* @version 1.0 Yu9.0A_) :  
*/ U10:@Wzh  
public class ShellSort implements SortUtil.Sort{ H=7Nh6v  
RB/;qdqR  
/* (non-Javadoc) 4>I;^LHn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HpTX6}^  
*/ -#"7F:N1  
public void sort(int[] data) { {,CvWL  
for(int i=data.length/2;i>2;i/=2){ .ID9Xd$fky  
for(int j=0;j insertSort(data,j,i); %(n^re uP  
} GF awmNZ  
} ?$rH yI  
insertSort(data,0,1); 7e`h,e=  
} L k]/{t0  
0@PI=JZ%  
/** 5QJ FNE  
* @param data BpZ17"\z  
* @param j @k,}>Tk  
* @param i LDv>hzo  
*/ )1S"D~j-  
private void insertSort(int[] data, int start, int inc) { \{M/Do:  
int temp; 5Gsjt+ o  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); [+Y;w`;Fq  
} SB2Ij',  
} `z!?!"=  
} _i+7O^=d6X  
?o6\>[O  
} CaqMLi%  
05Go*QvV  
快速排序: rA#Ji~  
Cu +u'&U!  
package org.rut.util.algorithm.support; M-+= t8  
piKR*|F  
import org.rut.util.algorithm.SortUtil; 07tSXl5!  
{oc7Chv=/H  
/** 23=SXA!  
* @author treeroot ZpQ8KY$ 5  
* @since 2006-2-2 ?e+$?8l[3  
* @version 1.0 n"c3C)  
*/  #mcU);s  
public class QuickSort implements SortUtil.Sort{ Kf-rthO  
maTZNzy  
/* (non-Javadoc) TdH~ sz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gdfG3d$4  
*/ *Me{G y  
public void sort(int[] data) { bv8GJ #  
quickSort(data,0,data.length-1); T hLR<\  
} !`F^LXGA  
private void quickSort(int[] data,int i,int j){ f'3sT(1&  
int pivotIndex=(i+j)/2; Kw ^tvRt'*  
file://swap f.y~Sew  
SortUtil.swap(data,pivotIndex,j); j>t*k!db  
-S%)2(f^  
int k=partition(data,i-1,j,data[j]); KdB9Q ;  
SortUtil.swap(data,k,j); |;6l1]hk6  
if((k-i)>1) quickSort(data,i,k-1); K~JXP5`(  
if((j-k)>1) quickSort(data,k+1,j); <FFaaGiE>  
@:"GgkyDl#  
} koAM",5D  
/** [v$NxmRu  
* @param data #[{xEVf  
* @param i J=qPc}+  
* @param j bP,_H  
* @return gELb(Y\ak  
*/ <"XDIvpc%L  
private int partition(int[] data, int l, int r,int pivot) { F"M$ "rC]  
do{ +O,h<* y  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); =q-HR+  
SortUtil.swap(data,l,r); ,"W.A  
} hu+% X.F4  
while(l SortUtil.swap(data,l,r); _C97G&  
return l; I!1nB\l  
} {b6g!sE  
aY7.<p*a  
} XUyoZl?  
=wy3h0k^  
改进后的快速排序: Z*rA~`@K6  
z.7'yJIP#  
package org.rut.util.algorithm.support; op%?V :  
TGJ\f  
import org.rut.util.algorithm.SortUtil; on q~wEr  
Xqac$%[3  
/** \!tS|h  
* @author treeroot :>t? ^r(  
* @since 2006-2-2 @GiR~bKZ  
* @version 1.0 U 0M>A  
*/ E0i_sB~T  
public class ImprovedQuickSort implements SortUtil.Sort { dIR6dI   
<C'S#5,2  
private static int MAX_STACK_SIZE=4096; K{&b "Ba1  
private static int THRESHOLD=10; G Riu]   
/* (non-Javadoc) +RO=a_AS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KrFV4J[  
*/ j8G>0f)  
public void sort(int[] data) { '\2lWR]ndd  
int[] stack=new int[MAX_STACK_SIZE]; PUN.nt  
X; gN[  
int top=-1; nAp7X-t  
int pivot; L^`oJ9k!  
int pivotIndex,l,r; ibOXh U  
Wsr #YNhx|  
stack[++top]=0; R<!WW9IM  
stack[++top]=data.length-1; N!fp;jvG  
n]B)\D+V^  
while(top>0){ YSuw V)Y  
int j=stack[top--]; !HXdUAKu  
int i=stack[top--]; V#TA%>  
 5m+:GiI  
pivotIndex=(i+j)/2; g(:y_EpmLH  
pivot=data[pivotIndex]; ;D/'7f7.}  
|yI?}zyR  
SortUtil.swap(data,pivotIndex,j); nDvny0^a  
;e0>.7m  
file://partition 'FBvAk6  
l=i-1; K@{jY\AZNx  
r=j; aAko-,URC  
do{ IEzZ$9,A5  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); IBVP4&}x$  
SortUtil.swap(data,l,r); $gZ|=(y&r  
} }}qR~.[  
while(l SortUtil.swap(data,l,r); \Mlj 7.u]  
SortUtil.swap(data,l,j); s=huOjKL]  
nX Qz  
if((l-i)>THRESHOLD){ #%e`OA(b  
stack[++top]=i; /]xd[^  
stack[++top]=l-1; !*%3um  
} qRB7I:m-Wi  
if((j-l)>THRESHOLD){ !wrl.A/P  
stack[++top]=l+1; %h%r6EB1F  
stack[++top]=j; McnP>n  
} kX1hcAa  
=GR Em5  
} y i@61XI  
file://new InsertSort().sort(data); /gFyow1W  
insertSort(data); cDTDim1F  
} *pasI.2s#  
/** !#iP)"O  
* @param data Q|G[9HBI  
*/ 6ldDt?iSg  
private void insertSort(int[] data) { r9vC&pWZ  
int temp; #3CA  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); G>_ZUHd I  
} % 9WWBxS  
} K->p&6s  
} F37,u|  
U3U eTa_  
} 4t8 Hy  
E>V8|Hz;  
归并排序: |R[m&uOib  
rz.`$b  
package org.rut.util.algorithm.support; TOuFFR  
4*dT|NU  
import org.rut.util.algorithm.SortUtil; |]]fcJOBP  
)US) -\^  
/** /n_HUY  
* @author treeroot be@MQ}6>  
* @since 2006-2-2 P 2Eyqd8  
* @version 1.0 |F=^Cu,  
*/ D>1Dao  
public class MergeSort implements SortUtil.Sort{ I%s/h4x^B[  
%Mu dc  
/* (non-Javadoc) 0+H"$2/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <=`@`rm{  
*/ _6[NYv$"  
public void sort(int[] data) { D6m>>&E['  
int[] temp=new int[data.length]; u@|yw)  
mergeSort(data,temp,0,data.length-1); bBQp:P?E  
} U--ER r8  
l-npz)EM  
private void mergeSort(int[] data,int[] temp,int l,int r){ ~lL($rE  
int mid=(l+r)/2; s-DtkO  
if(l==r) return ; ':[y]ep(~|  
mergeSort(data,temp,l,mid); /[-hJ=< Yb  
mergeSort(data,temp,mid+1,r); D;E&;vP6%  
for(int i=l;i<=r;i++){ cP Y^Bf5)  
temp=data; AuCVpDH  
} s0h)~z  
int i1=l; $200?[  
int i2=mid+1; !`WuLhB`  
for(int cur=l;cur<=r;cur++){ g?`J,*y  
if(i1==mid+1) O//e0?]W  
data[cur]=temp[i2++]; Psv!`K  
else if(i2>r) | jkmh6  
data[cur]=temp[i1++]; Il642#Gh  
else if(temp[i1] data[cur]=temp[i1++]; ,)RdXgCs  
else t Z%?vY~!  
data[cur]=temp[i2++]; nGt8u4gcP  
} j{PX ~/  
} o?3R HP47  
wfdFGoy(  
} 8+ u8piG  
Dn[1BWM/7  
改进后的归并排序: s5pY)6)  
ZUu^==a  
package org.rut.util.algorithm.support; yV8).4  
cm]]9z_<  
import org.rut.util.algorithm.SortUtil; sHF vzE%  
7I|%GA_  
/** X_qXH5^%  
* @author treeroot =6sXZ"_Tw  
* @since 2006-2-2 %Z7!9+<  
* @version 1.0 E;qwoTmul  
*/ o;[oy#aWl_  
public class ImprovedMergeSort implements SortUtil.Sort { WdT|xf.Q&  
(Ka# 6   
private static final int THRESHOLD = 10; |(S W  
+6=!ve}  
/* BUb(BzC  
* (non-Javadoc) <-F"&LI{<  
* .*j+?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QP#Wfk(C  
*/ $c}0L0  
public void sort(int[] data) { asg>TO W  
int[] temp=new int[data.length]; k@L~h{`Mc\  
mergeSort(data,temp,0,data.length-1); =r~. I  
} yShHFlO=  
.N=hA  
private void mergeSort(int[] data, int[] temp, int l, int r) { mw[4<vfB0a  
int i, j, k; qx)k1QY  
int mid = (l + r) / 2; ZhsZy wM  
if (l == r) O[ !o1.  
return; !)O$Q}'\  
if ((mid - l) >= THRESHOLD) MbfzGYA2~  
mergeSort(data, temp, l, mid); Aq!['G  
else mB{{o}'<u  
insertSort(data, l, mid - l + 1); PAHlj,n)  
if ((r - mid) > THRESHOLD) tWn m{mF  
mergeSort(data, temp, mid + 1, r); R(sM(x5a`  
else @@wx~|%  
insertSort(data, mid + 1, r - mid); `VtwKt*  
(GG"'bYk  
for (i = l; i <= mid; i++) { l,.?-|Poa  
temp = data; :eW~nI.Vc  
} PQ}%}S7:  
for (j = 1; j <= r - mid; j++) { 1v&Fo2ML  
temp[r - j + 1] = data[j + mid]; |Vi&f5p,@  
} d|]O<]CG_  
int a = temp[l]; +5[oY,^cO  
int b = temp[r]; /y)"j#-eW  
for (i = l, j = r, k = l; k <= r; k++) { Eap/7U1Q  
if (a < b) { m>ycN  
data[k] = temp[i++]; "<x~{BN?  
a = temp; Jwd&[ O  
} else { -l H>8+  
data[k] = temp[j--]; iIaT1i4t.  
b = temp[j]; t i^v%+r1  
} *ldMr{s<R  
} 8e!DDh  
} V<4+g/  
y?n2`l7f  
/** ]"Y%M'  
* @param data _i[)$EgFm  
* @param l Wi[m`#  
* @param i *xg`Kwl5Kl  
*/ }b+QYSt  
private void insertSort(int[] data, int start, int len) { 6@q[tN7_^  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); .3<IOtD=  
} oNB,.:  
} P%sO(_PuT  
} !?o$-+a|  
} g'ZMV6b?K  
vM7vf6  
堆排序: 6_<s=nTX  
H [Lt%:r  
package org.rut.util.algorithm.support; 030U7VT1  
6lmiMU&V  
import org.rut.util.algorithm.SortUtil; 5 n+ e  
4su_;+]  
/** *Z`XG_s5  
* @author treeroot $54=gRo^  
* @since 2006-2-2 .S!>9X,  
* @version 1.0 ;DD>k bd  
*/ 6 W;?8Z_1  
public class HeapSort implements SortUtil.Sort{ /Y[o=Uyl  
ZSPgci  
/* (non-Javadoc) !ml_S)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X#DL/#z k  
*/ sr+gD*@h  
public void sort(int[] data) { tyuk{* Me:  
MaxHeap h=new MaxHeap(); YxEbg(Y  
h.init(data); V+O0k: o  
for(int i=0;i h.remove(); H+VO.s.a  
System.arraycopy(h.queue,1,data,0,data.length); 6!+X.+  
} (@ fa~?v>@  
y98JiNq  
private static class MaxHeap{ m\/,cc@,  
{b'}:aMc  
void init(int[] data){ *O+R|Cdp/  
this.queue=new int[data.length+1]; ;h9-}F  
for(int i=0;i queue[++size]=data; T2DF'f3A  
fixUp(size); JFRpsv  
} mPs%ZC  
} '7Mep ]  
VyecTU"W  
private int size=0; n .f4z<  
-,QKTxwo>  
private int[] queue; ]6{(Hjt  
HKTeqH_:  
public int get() { VY/|WD~"CW  
return queue[1]; =Kc|C~g  
} |*^8~u3J"  
@up&q  
public void remove() { ;w`sz.  
SortUtil.swap(queue,1,size--); I %|@3=Yc  
fixDown(1); h@*lWi2K7  
} +"cRhVR  
file://fixdown i`[#W(m  
private void fixDown(int k) { l`@0zw+  
int j; .E+OmJwD  
while ((j = k << 1) <= size) { [ rQMD^:M$  
if (j < size %26amp;%26amp; queue[j] j++; 1.'(nKoq  
if (queue[k]>queue[j]) file://不用交换 F:M>z=  
break; 2E$^_YT C  
SortUtil.swap(queue,j,k); /8xH$n&xoC  
k = j; 9wL!D3e {Q  
} tT;8r8@  
} X<(6T  
private void fixUp(int k) { !|:RcH[  
while (k > 1) { ~?#~Ar  
int j = k >> 1; f:]u`ziM  
if (queue[j]>queue[k]) i<%m Iq1L  
break; A-Mj|V  
SortUtil.swap(queue,j,k); -Q6(+(7_|  
k = j; ,09DBxQq,  
} l+%Fl=Q2em  
} }N?g|  
?RHn @$g8M  
} R.K?  
& x`&03X  
} Qh*)pt]n  
o&~dGG4J  
SortUtil: |2O')3p"9  
tl|ijR  
package org.rut.util.algorithm; )1WMlG  
wfE^Sb3  
import org.rut.util.algorithm.support.BubbleSort; iQqqs`K  
import org.rut.util.algorithm.support.HeapSort; z<!O!wX_aI  
import org.rut.util.algorithm.support.ImprovedMergeSort; Tr~sieL  
import org.rut.util.algorithm.support.ImprovedQuickSort; xA92 C  
import org.rut.util.algorithm.support.InsertSort; 6 Ew@L<v  
import org.rut.util.algorithm.support.MergeSort; zX98c  
import org.rut.util.algorithm.support.QuickSort; 1I ""X]I_  
import org.rut.util.algorithm.support.SelectionSort; ]% K' fXj$  
import org.rut.util.algorithm.support.ShellSort; _BbvhWN&+  
Lbcy:E*g  
/** SAR= {/  
* @author treeroot K*1.'9/  
* @since 2006-2-2 /,!<Va;~  
* @version 1.0 V@[rf<,  
*/ z`4c 4h]I  
public class SortUtil { AotCX7T2T  
public final static int INSERT = 1; YScvyh?E  
public final static int BUBBLE = 2; 8] `Ru5nd  
public final static int SELECTION = 3; :|rPT)yT]  
public final static int SHELL = 4; M%I@<~wl  
public final static int QUICK = 5; +"dv7  
public final static int IMPROVED_QUICK = 6; \|.7-X  
public final static int MERGE = 7; J? .F\`N)  
public final static int IMPROVED_MERGE = 8; cL G6(<L  
public final static int HEAP = 9; `<U5z$^QTw  
V^TbP.  
public static void sort(int[] data) { zyFUl%  
sort(data, IMPROVED_QUICK); $5NKFJc  
} 1Ipfw  
private static String[] name={ I`T1Pll  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" wksl0:BL  
}; 5wv fF.v  
rQb7?O@-  
private static Sort[] impl=new Sort[]{ nls   
new InsertSort(), 1_hW#I\'  
new BubbleSort(), $=)gpPT  
new SelectionSort(), VL\t>n  
new ShellSort(), 1& ^?U{  
new QuickSort(), rzUlO5?R=  
new ImprovedQuickSort(), T.ML$"f  
new MergeSort(), g9~]s 9  
new ImprovedMergeSort(), UE.4q Y_7  
new HeapSort() ]JXKZV8$0  
}; `XKVr  
3I  $>uR  
public static String toString(int algorithm){ H C0w;MG)  
return name[algorithm-1]; oyvKa g  
} Mxl]"?z  
LT VF8-v  
public static void sort(int[] data, int algorithm) { mbxbEqz  
impl[algorithm-1].sort(data); />44]A<  
} *F`A S>  
t9cl"F=  
public static interface Sort { Qdf=XG5  
public void sort(int[] data); -7{ $ Vj  
} ,xfO;yd  
gckI.[!b  
public static void swap(int[] data, int i, int j) { 2%u;$pj  
int temp = data; 4 %W:  
data = data[j]; &(N+.T5cp  
data[j] = temp; ~j9O$s~)  
} ep/Y^&$M  
} ?OlV"zK  
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