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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。 CK[w0VCT  
插入排序: jQ>~  
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package org.rut.util.algorithm.support; '" MT$MrT  
1ym^G0"s  
import org.rut.util.algorithm.SortUtil; &+0WZ#VI  
/** {`RCh]W  
* @author treeroot py \KY R  
* @since 2006-2-2 ]#$l"ss,  
* @version 1.0 m9~cQ!m  
*/ 6:\0=k5  
public class InsertSort implements SortUtil.Sort{ vs=8x\W  
*vFXe_.  
/* (non-Javadoc) B\WIoz;'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O4`am:@  
*/ 3m;*gOLk6  
public void sort(int[] data) { ?7;_3+T#  
int temp; 0eJqDCmH  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "~V|p3  
} w?eJVi@w{  
} ''p7!V?  
} prypo.RI  
0c{-$K}  
} q>X30g  
JWB3;,S  
冒泡排序: Y8i'=Po%,  
9Rf})$o+  
package org.rut.util.algorithm.support; ^9_4#Ep(  
@%"+;D  
import org.rut.util.algorithm.SortUtil; 3lh^maQ]  
M\m6|P  
/** ,a6Oi=+>/U  
* @author treeroot b=87k  
* @since 2006-2-2 V^S` d8?  
* @version 1.0 G q&[T:  
*/ |$^a"Yd`9  
public class BubbleSort implements SortUtil.Sort{ 0:C^-zrx  
6'Sq|@VOi  
/* (non-Javadoc) itU P%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Aq]*$s2\G  
*/ @Z+(J:Grm5  
public void sort(int[] data) { vV$6fvS  
int temp; $!LL  
for(int i=0;i for(int j=data.length-1;j>i;j--){ +uqP:z  
if(data[j] SortUtil.swap(data,j,j-1); F/ si =%  
} 5w9oMM {  
} :Vnus @#r  
} T[(4z@d`5  
} a_V.mu6h6p  
S\jIs[Dz  
} 9coN >y  
}LA7ku  
选择排序: +$CO  
(_ TKDx_  
package org.rut.util.algorithm.support; qA;!Pql`  
bnZ`Wc*5b  
import org.rut.util.algorithm.SortUtil; b<E0|VW  
9JtPP  
/** EJByYk   
* @author treeroot M[:},?ah0  
* @since 2006-2-2 IKs2.sj"o  
* @version 1.0 -dO9y=?t  
*/ yt 5'2!jc  
public class SelectionSort implements SortUtil.Sort { `VL<pqPP  
>Y)FoHa+/  
/* 9{- Sa  
* (non-Javadoc) 6\5"36&/rQ  
* mo*ClU7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ld4Jp`Zg  
*/ b%_[\((  
public void sort(int[] data) { 7dh--.i  
int temp; hsJS(qEh.'  
for (int i = 0; i < data.length; i++) { <#ZDA/G(  
int lowIndex = i; A5q%yt I  
for (int j = data.length - 1; j > i; j--) { \L5h&  
if (data[j] < data[lowIndex]) { XEpwk,8*g  
lowIndex = j; n38l!m(.  
} 6Gj69Lr  
} |+h8g@;Z  
SortUtil.swap(data,i,lowIndex); _ry7 [/)  
} m&I5~kD  
} q% pjY  
0(h'ZV  
} egHvI&w"o  
( L ]C  
Shell排序: )BX-Y@fpA  
z@tIC^s  
package org.rut.util.algorithm.support; y&(R1Y75  
m2r %m y  
import org.rut.util.algorithm.SortUtil; iosL&*'8  
:G/.h[\R|  
/** w=}R'O;k  
* @author treeroot PvkHlb^x%  
* @since 2006-2-2 4+2hj*I  
* @version 1.0 G ]JWd  
*/ LQ'VhNU  
public class ShellSort implements SortUtil.Sort{ qJ5gdID1_  
*<IQ+oat,a  
/* (non-Javadoc) ;Y@"!\t}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zKf.jpF^  
*/ D  Kng.P  
public void sort(int[] data) { )an,-EIX%  
for(int i=data.length/2;i>2;i/=2){ V+dFL9  
for(int j=0;j insertSort(data,j,i); g| M@/D l  
} ^hIKDc!.m  
} 4SGF8y@WU  
insertSort(data,0,1); eT ZQ[qMp  
} lKA2~o  
K4|{[YpPB  
/** I/Q5Y-atg  
* @param data ]>"q>XgnI  
* @param j /sa\Ze;E  
* @param i 0Ik}\lcn  
*/ L\/YS;Y  
private void insertSort(int[] data, int start, int inc) { = k|hH~  
int temp; "PtOe[Xk  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 9xZ?}S:d  
} (U@uJ  
} h"849c;C.  
} ?D]qw4J  
+`$[h2Z=:  
} otSF8[  
-_xC,dwK  
快速排序: ;d{lvKk  
c:f++||  
package org.rut.util.algorithm.support; =F>nqklc  
v>]^wH>/"  
import org.rut.util.algorithm.SortUtil; Ymr\8CG/  
[-*8 S1  
/** $ix*xm. 4m  
* @author treeroot 8C4 =f  
* @since 2006-2-2 O,A}p:Pgs  
* @version 1.0 wG2-,\:  
*/ 1WbawiG}  
public class QuickSort implements SortUtil.Sort{ J"W+9sI0  
R$xkcg2(  
/* (non-Javadoc) u, Rhm-`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vo-]&u&cr  
*/ 4}t&AW4  
public void sort(int[] data) { x|oa"l^JZ"  
quickSort(data,0,data.length-1); 2`]_c=  
} Qx%]u8s  
private void quickSort(int[] data,int i,int j){ z,#3YC{'  
int pivotIndex=(i+j)/2; Me|+)}'p5h  
file://swap i@|.1dWh  
SortUtil.swap(data,pivotIndex,j); xgQ]#{ tG  
|Sf` Cs  
int k=partition(data,i-1,j,data[j]); ko<iG]Dv'  
SortUtil.swap(data,k,j); T.j&UEsd  
if((k-i)>1) quickSort(data,i,k-1); g0~3;y  
if((j-k)>1) quickSort(data,k+1,j); }^/;8cfLY  
`9yR,Xk=l  
} \ mt> R[  
/** dS[="Set  
* @param data H@R2mw  
* @param i xw%'R-  
* @param j %hqhi@q#  
* @return GOeYw[Vh  
*/ U~Ai'1?xz  
private int partition(int[] data, int l, int r,int pivot) { $={WtR  
do{ }{(|^s=  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ie+746tFW  
SortUtil.swap(data,l,r); Bhnwb0b<  
} NXyuv7%5=  
while(l SortUtil.swap(data,l,r); te b~KM  
return l; 1n86Mp1.e  
} gUq)M  
{=Ku9\  
} v8L&F9 o  
At#'q>Dn  
改进后的快速排序: rH<iUiA?O  
$CY B&|d  
package org.rut.util.algorithm.support; 8(Y=MW;g  
m#oZu {  
import org.rut.util.algorithm.SortUtil; I;!zZ.\  
}M I9?\"q  
/** 6$JRV  
* @author treeroot i%R2#F7I  
* @since 2006-2-2 :8<\]}J  
* @version 1.0 +J~q:b.  
*/ XS'0fq a  
public class ImprovedQuickSort implements SortUtil.Sort {  8/|~E  
oQvG3(.  
private static int MAX_STACK_SIZE=4096;  xedbr  
private static int THRESHOLD=10; sN `NZyG  
/* (non-Javadoc) bof{R{3q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }Pj3O~z  
*/ m )2t<  
public void sort(int[] data) { &Z^,-Y  
int[] stack=new int[MAX_STACK_SIZE]; {=NHidi~  
X[cSmkp7  
int top=-1; gl4|D  
int pivot; CbA2?(1o1  
int pivotIndex,l,r; $ZPiM  
]v^;]0vcr  
stack[++top]=0; U/JeEI%L  
stack[++top]=data.length-1; *<**rY*  
Z`l97$\  
while(top>0){ EPz$`#Sh"  
int j=stack[top--]; -pRyN]YD  
int i=stack[top--]; X%1fMC  
8'2lc  
pivotIndex=(i+j)/2; PG1#Z?_  
pivot=data[pivotIndex]; mYudUn4Wo  
k_=~ObA$g  
SortUtil.swap(data,pivotIndex,j); ~la=rh3  
Wh,{|R[  
file://partition :q2tda  
l=i-1; ;NrkX?Y  
r=j; _faI*OY8  
do{ V^t5 Y+7  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); s1!_zf_  
SortUtil.swap(data,l,r); .bm#|X)RO  
} l_!.yV{  
while(l SortUtil.swap(data,l,r); KJwkkCE/=  
SortUtil.swap(data,l,j); S"iQQV{)Z  
vYD>m~Qc^  
if((l-i)>THRESHOLD){ {9<2{$Og  
stack[++top]=i; I [J0r  
stack[++top]=l-1; *mM+(]8US  
} bT@7&  
if((j-l)>THRESHOLD){ [G/q*a:K  
stack[++top]=l+1; H]. 4~ 8  
stack[++top]=j; eXaa'bTx  
} GRC=G&G  
\kiCczW_  
} H7e/6t<x  
file://new InsertSort().sort(data); fuQ|[tpvQG  
insertSort(data); eo4<RDe<  
} ]]s_ 8u 3  
/** sX3Vr&r  
* @param data j~G^J  
*/ F6T@YSP  
private void insertSort(int[] data) { bp6 La`+  
int temp; $a6&OH/  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [)`9euR%  
} *|x2"?d-F:  
} C.{*|#&GAt  
} icF -`m  
_c|>m4+X  
} Y"mD)\Bw?  
,>%AEN6N2  
归并排序: 3:a}<^DuCS  
y @AKb  
package org.rut.util.algorithm.support; S{Au%Rs  
xXK7i\ny  
import org.rut.util.algorithm.SortUtil; [Bp[=\  
5FHpJlFK,  
/** $2F*p#l(<Z  
* @author treeroot :&dY1.<N+  
* @since 2006-2-2 :y'D] ,_  
* @version 1.0 }[PbA4l.g  
*/ Y9m'RFZr  
public class MergeSort implements SortUtil.Sort{ {=7W;uL  
V|{ )P@Q  
/* (non-Javadoc) #kX=$Bzk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I0O)MR<  
*/ Zg7~&vs$  
public void sort(int[] data) { ~Xnq(}?ok  
int[] temp=new int[data.length]; dCcV$BX,K  
mergeSort(data,temp,0,data.length-1); p;) ;Vm+8  
} -o F#a 8  
>ofS'mp  
private void mergeSort(int[] data,int[] temp,int l,int r){ :Qu!0tY  
int mid=(l+r)/2; 1+o>#8D  
if(l==r) return ;  "t8mQ;n  
mergeSort(data,temp,l,mid); {!B0&x  
mergeSort(data,temp,mid+1,r); O#7fkL  
for(int i=l;i<=r;i++){ C["^%0lj  
temp=data; dH!k {3bL  
} @6i^wC  
int i1=l; eF"7[_+D  
int i2=mid+1; 1,W%t\D  
for(int cur=l;cur<=r;cur++){ "Q+'lA[}  
if(i1==mid+1) 3l>P>[<o  
data[cur]=temp[i2++]; IqEY.2KN  
else if(i2>r) neQ2+W%oj  
data[cur]=temp[i1++]; E]_lYYkA  
else if(temp[i1] data[cur]=temp[i1++]; uavts9v<  
else 7(~^6Ql!  
data[cur]=temp[i2++]; 96vv85g  
} mn" a$  
} B l'  
v>g1\y Iw  
} XFmnZpqXH  
AY0o0\6cw  
改进后的归并排序: "[H9)aAj7  
s.KJYP  
package org.rut.util.algorithm.support; ]&VD$Z984r  
U%_a@&<  
import org.rut.util.algorithm.SortUtil; RgQ\Cs24Q  
Yq/|zTe{  
/** QE!cf@~n"  
* @author treeroot s Xl7  
* @since 2006-2-2 8pDJz_F!{  
* @version 1.0 .Rc&EO  
*/ ^F`FB..:y  
public class ImprovedMergeSort implements SortUtil.Sort { 4ej$)AdW3  
r7*[k[^[^  
private static final int THRESHOLD = 10; ~srmlBi6  
7z=Ss'O]  
/* u[s+YGS  
* (non-Javadoc) \{G6!dV|S  
* ^gkyi/z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5.VA1  
*/ ~AK!_EOs`  
public void sort(int[] data) { QsDa b4  
int[] temp=new int[data.length]; vD1jxk'fd  
mergeSort(data,temp,0,data.length-1); DfV_08  
} r9s1\7]x  
?ArQ{9c  
private void mergeSort(int[] data, int[] temp, int l, int r) { |=38t8Ge&  
int i, j, k; o|alL-  
int mid = (l + r) / 2; v1 oSf  
if (l == r) jK I+-s  
return; QE)g==d  
if ((mid - l) >= THRESHOLD) .1|'9@]lj4  
mergeSort(data, temp, l, mid); LAf!y"A#  
else 9S6vU7W  
insertSort(data, l, mid - l + 1); Fw"~f5O  
if ((r - mid) > THRESHOLD) s/sH",  
mergeSort(data, temp, mid + 1, r); LC[, K  
else 2HQ'iEu$  
insertSort(data, mid + 1, r - mid); \|j`jsq  
3u{[(W}08  
for (i = l; i <= mid; i++) { f#JLE+0Y  
temp = data; = "c _<?=[  
} $am7 xd  
for (j = 1; j <= r - mid; j++) { 4)'5;|pI  
temp[r - j + 1] = data[j + mid]; uLhamE)  
} (: ZOoL  
int a = temp[l]; Q:-H U bB  
int b = temp[r]; "t"dz'  
for (i = l, j = r, k = l; k <= r; k++) { Uk;SY[mU  
if (a < b) { 4ItXZo  
data[k] = temp[i++]; T X6Ydd  
a = temp; ,=6Eju#P  
} else { @[ :sP  
data[k] = temp[j--]; VWfrcSZg6M  
b = temp[j]; mL6/NSSz  
}  & .(ZO]  
} 7Zu!s]t  
} /B1< N}  
\3)%p('  
/** A%+~   
* @param data >t*zY~R.  
* @param l 7qW:^2y  
* @param i Ubn5tN MK  
*/ i7fpl  
private void insertSort(int[] data, int start, int len) { b>2u>4  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); V!},a@>p  
} Mh_jlgE'd#  
} g4Hq<W"  
} =$BgIt  
} tvb hWYe  
*~&W?i  
堆排序: X:62 )^~'  
} doj4  
package org.rut.util.algorithm.support; Tm3$|+}$f  
)2^OBfl7  
import org.rut.util.algorithm.SortUtil; *^.b}K%  
O=mGL  
/** UBC[5E$  
* @author treeroot dc?Yk3(Y  
* @since 2006-2-2 })!n1kt  
* @version 1.0 ARU,Wtj#  
*/ OvK_CN{  
public class HeapSort implements SortUtil.Sort{ C|!E' 8Rw  
>Q+EqT  
/* (non-Javadoc) |qbJ]v!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]L &_R^  
*/ (V=lK6WQm  
public void sort(int[] data) { O _1}LS!  
MaxHeap h=new MaxHeap(); /#,<> EfT  
h.init(data); UZ] (X/  
for(int i=0;i h.remove(); rSEJ2%iF*  
System.arraycopy(h.queue,1,data,0,data.length); r2sog{R  
} dOiy[4s  
ut\9@>*J=Q  
private static class MaxHeap{ sgB3i`_M  
j6v +S  
void init(int[] data){ &F.lo9JJ  
this.queue=new int[data.length+1]; >eUAHmXQ|  
for(int i=0;i queue[++size]=data; B:x4H}`vh  
fixUp(size); P_ ZguNH  
}  K8 ThZY%  
} Ak}l6{ ..  
`L;I/Hp  
private int size=0; n$=n:$`q  
BC4u,4S  
private int[] queue; a[#4Oq/t$  
BO h  
public int get() { Nxt/R%(  
return queue[1]; Hss{Sb(  
} vNtbb]')m  
+ZZiZ&y  
public void remove() { sPZa|AKHb  
SortUtil.swap(queue,1,size--); ?tSY=DK\n  
fixDown(1); 3IJIeG>  
} Qu;AU/Q<([  
file://fixdown }'X}!_9w>  
private void fixDown(int k) { 9td(MZ%i~N  
int j; ~O^_J)  
while ((j = k << 1) <= size) { < )?&Jf>_  
if (j < size %26amp;%26amp; queue[j] j++; _D+7w'8h  
if (queue[k]>queue[j]) file://不用交换 igo7F@_,  
break; W&p-Z"=)  
SortUtil.swap(queue,j,k); 6U""TR!   
k = j; iu1iO;q  
} a\MU5%}\  
} hi ]+D= S  
private void fixUp(int k) { @\q~OyV  
while (k > 1) { "3>#[o  
int j = k >> 1; 2]C0d8=*?  
if (queue[j]>queue[k]) <Jvr mm[  
break; |6;.C1\,  
SortUtil.swap(queue,j,k); K8RloDjk_A  
k = j; $qEJO=v  
} ims *|~{sr  
} (>Yii_Cd  
'x18F#g  
} gM= ~dBz  
kO9yei  
} 4%]{46YnK  
NCsUC  
SortUtil: ]v#T'<Nl  
 #?,cYh+  
package org.rut.util.algorithm; 7u}r^+6_o  
Q^ F-8  
import org.rut.util.algorithm.support.BubbleSort; zzx4;C",u  
import org.rut.util.algorithm.support.HeapSort; r94BEC 2  
import org.rut.util.algorithm.support.ImprovedMergeSort; cN :;ir  
import org.rut.util.algorithm.support.ImprovedQuickSort; ^KhFBed   
import org.rut.util.algorithm.support.InsertSort; Fb}9cpz{  
import org.rut.util.algorithm.support.MergeSort; '1{~y3  
import org.rut.util.algorithm.support.QuickSort; p75w^  
import org.rut.util.algorithm.support.SelectionSort; b"Ulc}$/&  
import org.rut.util.algorithm.support.ShellSort; Vw#07P#A  
WFdS#XfV  
/** \:#b9t{B-  
* @author treeroot 8<G@s`*  
* @since 2006-2-2 v0y7N_U5n  
* @version 1.0 #" OKO6]  
*/ 1|]-F;b  
public class SortUtil { ,L^L uw'7  
public final static int INSERT = 1; K0#tg^z5d  
public final static int BUBBLE = 2; 0I&rZMpF&  
public final static int SELECTION = 3; "8rP?B(  
public final static int SHELL = 4; ae<KUThm.  
public final static int QUICK = 5; W"0#  
public final static int IMPROVED_QUICK = 6;  OkQSqL  
public final static int MERGE = 7; *GDU=D}  
public final static int IMPROVED_MERGE = 8; V]8fn MH  
public final static int HEAP = 9; /bb4nM_E/  
{.2C>p  
public static void sort(int[] data) { yQW\0&a$  
sort(data, IMPROVED_QUICK); `=>Bop)  
} S%4hv*_c  
private static String[] name={ n/6A@C  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" (=\P|iv  
}; xtnB: 3  
v{jl)?`~w  
private static Sort[] impl=new Sort[]{ .xD-eWw3R  
new InsertSort(), l)|CPSN?w  
new BubbleSort(), _]4cY%s  
new SelectionSort(), :[rx|9M6  
new ShellSort(), 'X?`+2wK   
new QuickSort(), o+vf  
new ImprovedQuickSort(), YnMph0\Y^  
new MergeSort(), bw[!f4~  
new ImprovedMergeSort(), >i.+v[)#  
new HeapSort() 8R z=)J  
}; #eaey+~  
f(C0&"4e  
public static String toString(int algorithm){ v ;9s  
return name[algorithm-1]; W,<Vr2J[  
} m&x0,8  
C +IXP  
public static void sort(int[] data, int algorithm) { 'D-imLV<<  
impl[algorithm-1].sort(data); V*AG0@& !  
} qB&*"gf  
a2i   
public static interface Sort { j4l7Tx  
public void sort(int[] data); (I+-wki"e  
} +j<Nu)0iY  
7OZ s~6(  
public static void swap(int[] data, int i, int j) { ^NCH)zK]v  
int temp = data; ,aN/``j=  
data = data[j]; S*]IR"YL  
data[j] = temp;  <O*q;&9  
} !1l2KW<be  
} dfrq8n]  
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