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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。 W@S>#3,  
插入排序: QAN :  
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package org.rut.util.algorithm.support; &}}UdJ`  
fib#)KE  
import org.rut.util.algorithm.SortUtil; d!>.$|b  
/** 8);G'7O  
* @author treeroot l5; SY  
* @since 2006-2-2 TQ hu$z<  
* @version 1.0 .:dy  d  
*/ R(.5Hs  
public class InsertSort implements SortUtil.Sort{ PqUjBP\  
gu:8+/W8L  
/* (non-Javadoc) T)N_~f|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) my1FW,3  
*/ U0X,g(2'  
public void sort(int[] data) { k9Pwf"m|](  
int temp; gs/ i%O  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); g_8A1lt  
} e97Ll=>  
} vU(uu:U9  
} 5ub|r0&M  
o,(]w kF  
} cl,\N\  
=o_Ua^mr  
冒泡排序: ;YGCsLT<xt  
RV@'$`Q  
package org.rut.util.algorithm.support; ;-]' OiS;  
)SjhOvm  
import org.rut.util.algorithm.SortUtil; SHcFnxEAIH  
9Su4nt`i  
/** FUTD/y]Lu  
* @author treeroot u([|^~H]  
* @since 2006-2-2 [T}Lq~  
* @version 1.0 *h([ai"1-  
*/ LZR x>q^  
public class BubbleSort implements SortUtil.Sort{ fGtYvl O-5  
~9ZW~z'  
/* (non-Javadoc) "/ 9EUbca  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q vc$D{z  
*/ 3fBV SFVS  
public void sort(int[] data) { =(aA`:Nl  
int temp; qz_'v{uAj  
for(int i=0;i for(int j=data.length-1;j>i;j--){ >v?&&FhHK<  
if(data[j] SortUtil.swap(data,j,j-1); "O (N=|b  
} sd m4zV]&  
} ),!1B%  
} Nv[MU@Tv  
} L|hoA9/]  
bfV&z+Rv-5  
} Vf*Z}'  
or<n[<D-C  
选择排序: iY[+BI:  
3bU(ea^e$  
package org.rut.util.algorithm.support; Bz+zEXBC  
}w_r(g?\  
import org.rut.util.algorithm.SortUtil; U\'HB.P\  
fV(WUN+  
/** n Y)H-u^  
* @author treeroot 7$ze RYD+  
* @since 2006-2-2 ; <NK  
* @version 1.0 '( ( pW  
*/ {3LAK[ C  
public class SelectionSort implements SortUtil.Sort { [C-4*qOaa2  
.91@T.  
/* R` HC EX)  
* (non-Javadoc) ;n\$'"K&;  
* ;07>ZH%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T1~G {@"  
*/ E:$EK_?:t  
public void sort(int[] data) { Y W9+.Dc`  
int temp; hj4mbL  
for (int i = 0; i < data.length; i++) { 7B@ 1[  
int lowIndex = i; ;udV"7C  
for (int j = data.length - 1; j > i; j--) { ~[@gu,Wb  
if (data[j] < data[lowIndex]) { w\}@+w3b~  
lowIndex = j; GZt L-   
} OaH1xZNOC`  
} ?:AD&Dn  
SortUtil.swap(data,i,lowIndex); qG)M8xk  
} yQz6K6p  
} ;Pw\p^wz  
A||,|He~  
} 6"djX47j  
AY x*Ngn  
Shell排序: P]^ BE;7T  
YZdV0 -S  
package org.rut.util.algorithm.support; 1Qk]?R/DN  
,L&d\M"f  
import org.rut.util.algorithm.SortUtil; $o%:ST4  
% |^V)  
/** pf8M0,AY  
* @author treeroot (ebC80M  
* @since 2006-2-2 `EdZ  
* @version 1.0 4 \Ig<C9  
*/ q]2t3aY%  
public class ShellSort implements SortUtil.Sort{ p6c&vEsNj  
1DR ih>+#  
/* (non-Javadoc) kMx^L;:n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) , G2( l  
*/ dTrz7ayH  
public void sort(int[] data) { 5Y4#aq  
for(int i=data.length/2;i>2;i/=2){ xf4CM,Z7(  
for(int j=0;j insertSort(data,j,i); %y|L'C,ge"  
} 1=L5=uz1d:  
} UP .4#1I  
insertSort(data,0,1); r "uQ|  
} 0&$,?CL?  
 MU>6s`6O  
/** 5< $8.a#  
* @param data = 9!|%j  
* @param j 93VbB[w~7F  
* @param i `8lS)R!  
*/ w.o>G2u  
private void insertSort(int[] data, int start, int inc) { K6EG"Vv!  
int temp; @#QaaR;4  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `e[>S  
} <Toy8-kj  
} 6>NK2} `  
} q@&6&cd  
H8!)zZ  
} 5"9 '=LV~  
OK" fFv  
快速排序: ?1.W F}X'  
34F;mr"yp  
package org.rut.util.algorithm.support; j"r7M|Z+V  
(.pi,+Ws  
import org.rut.util.algorithm.SortUtil; !O 0{ .k  
],-(YPiAD  
/** )}$]~ f4R  
* @author treeroot 7h#*dj ef  
* @since 2006-2-2 2DNB?,uP,'  
* @version 1.0 A}4 ",  
*/ mFrDV,V  
public class QuickSort implements SortUtil.Sort{ `$t|O&z  
po@Agyg5  
/* (non-Javadoc) 3|Y2BA d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0dW*].Gi:  
*/ m*'hHt n  
public void sort(int[] data) { 'm^]X3y*  
quickSort(data,0,data.length-1); {YK7';_E*  
} +z|@K=d#|  
private void quickSort(int[] data,int i,int j){ qM18 Ji*  
int pivotIndex=(i+j)/2; #h}a   
file://swap ;_ S D W  
SortUtil.swap(data,pivotIndex,j); M2Jb<y]  
hem>@Bp'V  
int k=partition(data,i-1,j,data[j]); n{I1ZlEeh  
SortUtil.swap(data,k,j); 7{lWg x  
if((k-i)>1) quickSort(data,i,k-1); : "^/?Sd  
if((j-k)>1) quickSort(data,k+1,j); 37 b6w6{D  
5t,X;  
} i`}!<{k  
/** WBWIHv{j  
* @param data (L*<CV  
* @param i \SN>Yy  
* @param j $ftxid8  
* @return YSbe Cyv  
*/ -Q6Vz=ku  
private int partition(int[] data, int l, int r,int pivot) { H=*lj.x  
do{ *?pnTQs^  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); YYhN>d$  
SortUtil.swap(data,l,r); _>J`e7j+  
} F~sUfqiJ'  
while(l SortUtil.swap(data,l,r); f^)iv ]p  
return l; JAX`iQd  
} \h/)un5  
fTt\@" V  
} VVbFn9+V  
V an=dz G  
改进后的快速排序: N~ajrv}kd  
'Q"Mu  
package org.rut.util.algorithm.support; eD|"?@cE  
mwutv8?  
import org.rut.util.algorithm.SortUtil; =I0J1Ob  
f#McTC3C  
/** wb>"'%  
* @author treeroot qr(t_qR&  
* @since 2006-2-2 yqC158 P  
* @version 1.0 @JPz|  
*/ sI6I5  
public class ImprovedQuickSort implements SortUtil.Sort { 7+;.Q  
M8R/a[ -A  
private static int MAX_STACK_SIZE=4096; "R\D:Olb#  
private static int THRESHOLD=10; ,3 [FD9  
/* (non-Javadoc) t?H sfN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mNlbiB  
*/ TBZhL  
public void sort(int[] data) { 3hVuC1;"  
int[] stack=new int[MAX_STACK_SIZE]; `CRF E5  
0oe2X1.%  
int top=-1; j;I( w [@P  
int pivot; @&x'.2[nv  
int pivotIndex,l,r; %]1te*_  
|]~],  
stack[++top]=0; |\xTcS|d  
stack[++top]=data.length-1; Aho-\9/x%  
mV0u:ws  
while(top>0){ 7x]q>Y8T  
int j=stack[top--]; -jzoGzC3  
int i=stack[top--]; U]W "  
{55f{5y3 c  
pivotIndex=(i+j)/2; H<tU[U=G  
pivot=data[pivotIndex]; "xNP"S  
i91k0q*di  
SortUtil.swap(data,pivotIndex,j); TR%8O;  
yg6o#;  
file://partition wq|7sk{  
l=i-1; &dPI<HlM  
r=j; N85ZbmU~  
do{ FNs$k=* 8  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot));  @{Dfro  
SortUtil.swap(data,l,r); .7M.bpmqE  
} SkmKf~v  
while(l SortUtil.swap(data,l,r); *zMt/d*<&  
SortUtil.swap(data,l,j); Jp c %i8  
/A+5q\8G  
if((l-i)>THRESHOLD){ n5#QQk2  
stack[++top]=i; hj\A-Yf  
stack[++top]=l-1; bYmk5fpRG  
} &fsk ESV0  
if((j-l)>THRESHOLD){ wD /jN:  
stack[++top]=l+1; +-T|ov<  
stack[++top]=j; j`+{FCB7  
} 9Wg;M#c2Y|  
j'OXT<n*  
} At'M? Q@v  
file://new InsertSort().sort(data); $3g M P+  
insertSort(data); "<Yxt"Z4  
} <g&.UW4  
/** ,g4T>7`&U%  
* @param data mi1^hl'2  
*/ $KhD>4^ jL  
private void insertSort(int[] data) { [E+J=L.l  
int temp; &- !$qUli  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); l](!2a=[  
} Dbb=d8utE  
} e}n(mq  
} mmG]|Cl@  
F8#MI G   
} m2&Vm~Py6b  
^Nu j/  
归并排序: KEdqA/F>  
7H|0.  
package org.rut.util.algorithm.support; o2;Eti  
 6@"E*-z$  
import org.rut.util.algorithm.SortUtil; #R7hk5/8n}  
"Pu917_P  
/** ?]aVRmL  
* @author treeroot  8hYl73#  
* @since 2006-2-2 ?2R!n" m-d  
* @version 1.0 76] Z~^Y  
*/ zl|+YjR  
public class MergeSort implements SortUtil.Sort{ Qn~{TZz  
\y6Y}Cv  
/* (non-Javadoc) ko|M2\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _v(5vx_ {  
*/ #s ' `bF^  
public void sort(int[] data) { cm!|A?-<  
int[] temp=new int[data.length]; .l|29{J  
mergeSort(data,temp,0,data.length-1); stMxlG"d  
} tc{l?7P  
Ov4=!o=  
private void mergeSort(int[] data,int[] temp,int l,int r){ @$Yk#N;&(  
int mid=(l+r)/2; {NcJL< ;tS  
if(l==r) return ; VbTX;?  
mergeSort(data,temp,l,mid); ]1eZ<le`6  
mergeSort(data,temp,mid+1,r); hTWZIW@  
for(int i=l;i<=r;i++){ 0!RP7Sx  
temp=data; 7HQL^Q  
} 5!pNo*QK  
int i1=l; bSn={O"M  
int i2=mid+1; rCsC}2O  
for(int cur=l;cur<=r;cur++){ }@/Ox  
if(i1==mid+1) yMzy!b Ky  
data[cur]=temp[i2++]; Qmb+%z  
else if(i2>r) epG]$T![  
data[cur]=temp[i1++]; 1]Cb i7  
else if(temp[i1] data[cur]=temp[i1++]; xFJT&=Af W  
else wWSw0 H/  
data[cur]=temp[i2++]; a8v\H8@X  
} >rSCf=  
} kM@e_YtpY  
bxO[y<|XL  
} :'xZF2  
{<a)+S.6U  
改进后的归并排序: gPA8A>U)[  
\gK'g-)}  
package org.rut.util.algorithm.support; xwW(WHdC]  
!I\eIV>0b  
import org.rut.util.algorithm.SortUtil; P : L6Zo-J  
,7Ejb++/M,  
/** 9UV}`UM3V  
* @author treeroot _/"e'@z  
* @since 2006-2-2 F>^KXq:Z  
* @version 1.0 X\w["! B  
*/ cvf?ID84  
public class ImprovedMergeSort implements SortUtil.Sort { j?T>S]xOX  
OoRg:"9{#  
private static final int THRESHOLD = 10; q&O9W?E8dG  
!)CY\c4}d>  
/* 7h2/8YUgQ  
* (non-Javadoc) m:Rm(ga9  
* ^UhqV"[7k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $FDGHFM  
*/ |`kk mq  
public void sort(int[] data) { ;8f)p9vE  
int[] temp=new int[data.length]; uhnnjI  
mergeSort(data,temp,0,data.length-1); ]JvjM,  
} H|,d`@U  
dd;rne v+  
private void mergeSort(int[] data, int[] temp, int l, int r) { t;0]d7ey'  
int i, j, k; N})vrB;1  
int mid = (l + r) / 2; 0v6Z 4Ahpo  
if (l == r) $ %|b6Gr/&  
return; ;CoD5F!  
if ((mid - l) >= THRESHOLD) T00sYoK  
mergeSort(data, temp, l, mid); ~IPATG  
else U%Hcc k'  
insertSort(data, l, mid - l + 1); ;Jb% 2?+=!  
if ((r - mid) > THRESHOLD) PMX'vA`  
mergeSort(data, temp, mid + 1, r); m(dW["8D  
else fZS'e{V  
insertSort(data, mid + 1, r - mid); R?,v:S&i7;  
ew~uOG+  
for (i = l; i <= mid; i++) { 7/fJQM  
temp = data; T,Q7 YI  
} "vkM*HP  
for (j = 1; j <= r - mid; j++) { uZ@qlq8  
temp[r - j + 1] = data[j + mid]; !>wu7u-  
} a+CJJ3T-  
int a = temp[l]; ??|,wIRz  
int b = temp[r]; A[`c+&  
for (i = l, j = r, k = l; k <= r; k++) { WP Gp(X w  
if (a < b) { n{qVF#N_  
data[k] = temp[i++]; (lq%4h  
a = temp; j~=<O<P  
} else { sFvYCRw /  
data[k] = temp[j--]; 0"N4WH O  
b = temp[j]; __uk/2q  
} ar'VoL}  
} m;IKV,  
} {j<?+o5A  
SMU 8U  
/** > PL}7f&:  
* @param data M1k_ldP  
* @param l xF YHv@g  
* @param i Xk:3w,  
*/ q$s)(D  
private void insertSort(int[] data, int start, int len) { \ f VX<L  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); - K"L6m|  
} .b!HEi<F  
} ti]8_vP}*  
} .:B0(4Mj  
} a3z_o)"   
BLt_(S?Z`  
堆排序: (JE&1 @  
/}%C'  
package org.rut.util.algorithm.support; q[Ey!h)xq  
zW hzU|=8  
import org.rut.util.algorithm.SortUtil; aW;)-0+  
t-iQaobF  
/** }dqOE-"I"n  
* @author treeroot .vIRz-S  
* @since 2006-2-2 &$#NV@  
* @version 1.0 vfVF^ WOd  
*/ )7AjRtb!/  
public class HeapSort implements SortUtil.Sort{ _W,?_"[R=  
rJtk4hOF  
/* (non-Javadoc) P.=Dd"La  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F4~O-g.<  
*/ h CV(O2jL  
public void sort(int[] data) { JE@3UXg  
MaxHeap h=new MaxHeap(); zP@\rZ@4  
h.init(data); onS4ZE3B  
for(int i=0;i h.remove(); *13-)yfd  
System.arraycopy(h.queue,1,data,0,data.length); ~H[_=  
} 9I#a{%A:  
%+#l{\z  
private static class MaxHeap{ <~svy)Cz  
Xg;<?g?k  
void init(int[] data){ y.gNjc  
this.queue=new int[data.length+1]; ;7JyL|2  
for(int i=0;i queue[++size]=data; 41rS0QAM  
fixUp(size); &`-e; Xt  
} yV6U<AP$3  
} <K/iX%b?  
>Il{{{\>  
private int size=0; :g-vy9vb  
Y8fel2;  
private int[] queue; !NKPy+v  
[s%uE+``S  
public int get() { g(S4i%\  
return queue[1]; l~@ -oE  
} >{rD3X"d  
r-[YJzf@P  
public void remove() { 9):^[Wkx  
SortUtil.swap(queue,1,size--); }Py Z{yS  
fixDown(1); [Z1,~(3  
} fq):'E)  
file://fixdown bQu@.'O!k  
private void fixDown(int k) { bZ+H u~  
int j; =}e{U&CX  
while ((j = k << 1) <= size) { ws,VO*4  
if (j < size %26amp;%26amp; queue[j] j++; ? fM_Y  
if (queue[k]>queue[j]) file://不用交换  .g=D70  
break; =;?Maexp3$  
SortUtil.swap(queue,j,k); x51xY$M  
k = j; H4M`^r@)'  
} 4]%MrSjS  
} `{}DLaD9  
private void fixUp(int k) { "M %WV>  
while (k > 1) { ! ;Ctz'wz  
int j = k >> 1; @ "C P@^  
if (queue[j]>queue[k]) COH>B1W@  
break; {Z~ze`N/  
SortUtil.swap(queue,j,k); CzmB76zy.  
k = j; K#y CZ2  
} XNl!?*l5?l  
} >[P`$XkXd4  
o4aFgal1  
} _o>?\:A  
;4`%?6%  
} sB'~=1m^  
d! _8+~  
SortUtil: Cg^1(dBd[9  
dQNW1-s  
package org.rut.util.algorithm; 1%N[DA^<\  
jF{\=&fU  
import org.rut.util.algorithm.support.BubbleSort; QG XR<Y  
import org.rut.util.algorithm.support.HeapSort; -}H EV#ev  
import org.rut.util.algorithm.support.ImprovedMergeSort; "?"+1S  
import org.rut.util.algorithm.support.ImprovedQuickSort; iR'Pc3   
import org.rut.util.algorithm.support.InsertSort; j[fY.>yt&  
import org.rut.util.algorithm.support.MergeSort; dp'k$el  
import org.rut.util.algorithm.support.QuickSort; xK_0@6  
import org.rut.util.algorithm.support.SelectionSort;  .V l  
import org.rut.util.algorithm.support.ShellSort; TF@k{_f  
_Oc\hW  
/** su~J:~q  
* @author treeroot nYnv.5  
* @since 2006-2-2 mnq1WU;<  
* @version 1.0 __-V_(/b,x  
*/ !L@a;L  
public class SortUtil { *1U"uJno  
public final static int INSERT = 1; qtS+01o  
public final static int BUBBLE = 2; HQ/ Q"  
public final static int SELECTION = 3; G"*ch$:  
public final static int SHELL = 4; YH0utc  
public final static int QUICK = 5; Ve[&_(fP  
public final static int IMPROVED_QUICK = 6; -8Uz8//A  
public final static int MERGE = 7; } FC(Z-g  
public final static int IMPROVED_MERGE = 8; 'L veCi_  
public final static int HEAP = 9; f;,^ ]mw  
hx;0h&L  
public static void sort(int[] data) { L#u!T)!zW  
sort(data, IMPROVED_QUICK); m Wh   
} aByd,uSe)_  
private static String[] name={ 9Pdol!  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ;0O>$|kg  
}; nSbcq>3  
" VSma  
private static Sort[] impl=new Sort[]{ JP6+h>ft  
new InsertSort(), e/<'HM T  
new BubbleSort(), KhNO xMZ  
new SelectionSort(), JcW<<7R  
new ShellSort(), cdD?QnZ  
new QuickSort(), 2zbV9Bhq  
new ImprovedQuickSort(), 2U'Vq  
new MergeSort(), E~c>LF_]Q  
new ImprovedMergeSort(),  dm{/  
new HeapSort() RjGJfN {  
}; HP[M"u  
}(w9[(K  
public static String toString(int algorithm){ 7[YulC-pH  
return name[algorithm-1]; GFYHt!&[\  
} UiN6-{v<2  
91}kBj  
public static void sort(int[] data, int algorithm) { h@D!/PS  
impl[algorithm-1].sort(data); PKX Tj6hj)  
} ?w>-ya  
/jd.<r=_I  
public static interface Sort { 4cJka~  
public void sort(int[] data); 'a=QCO 0  
} (L !#2Jy  
 *#sY-Gd  
public static void swap(int[] data, int i, int j) { )'axJ  
int temp = data; ~x g#6%<=  
data = data[j]; f9?f!k  
data[j] = temp; =(p]L  
} dC 8,  
} )L$)qfQ~x  
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