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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。 ;g8v7>p  
插入排序: 8aHE=x/TL  
[L-wAk:Fb  
package org.rut.util.algorithm.support; Kn$t_7AF^  
?`Z:vqp>Z  
import org.rut.util.algorithm.SortUtil; {Pe&J2 +  
/** 7_3 PM 3C  
* @author treeroot M^\`~{*T  
* @since 2006-2-2 1E!.E=Y ?M  
* @version 1.0 ylos6]zS8  
*/ -}4CY\d6'  
public class InsertSort implements SortUtil.Sort{ fk15O_#3  
fX:q ]  
/* (non-Javadoc) n}Eu^^d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2?LPr  
*/ :mDOqlXW/  
public void sort(int[] data) { k;<@ 2C  
int temp; ,V j&  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :55a9d1bL  
} S=S/]]e  
} 13 L&f\b  
} 2V;{@k  
%w>3Fwj`z  
}   +fM8  
G"3KYBN>  
冒泡排序: \nyqW4nTm  
%I`'it2d  
package org.rut.util.algorithm.support; m["e7>9G  
;uc3_J]  
import org.rut.util.algorithm.SortUtil; ?#<'w(^%#  
\H>Psv{  
/** MV3K'<Y  
* @author treeroot kz}Bc F  
* @since 2006-2-2 )$1j"mV  
* @version 1.0 #ZPF&u"  
*/ -]}#Z:&  
public class BubbleSort implements SortUtil.Sort{ lmUCrs37  
5`&@3 m9/  
/* (non-Javadoc) 4`o0?_.'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /T  {R\  
*/ ~C>;0a;<:  
public void sort(int[] data) { W\0u[IV.x  
int temp; ' xaPahx;  
for(int i=0;i for(int j=data.length-1;j>i;j--){ I AUc.VH  
if(data[j] SortUtil.swap(data,j,j-1); *qL'WrB1  
} M`Wk@t6>  
} q},,[t  
} _d7;Z%  
} v1+.-hO  
y+$vHnS/jC  
} wPYeKOh'  
"fv+}'  
选择排序: HLthVc w  
=d@)*W 6  
package org.rut.util.algorithm.support; _7u&.l<;  
E}%Pwr  
import org.rut.util.algorithm.SortUtil; 5cM%PYU4:v  
R)N^j'R~=  
/** +-TEB  
* @author treeroot 3NZK$d=4  
* @since 2006-2-2 K5bR7f:  
* @version 1.0 [giw(4m#y  
*/ "WmsBdO  
public class SelectionSort implements SortUtil.Sort { oPBKPGD  
=B+dhZ+#S$  
/* t{s>B]i^_w  
* (non-Javadoc) ] !1HN3  
* OU/3U(%n]e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -;8a* F  
*/ OhaoLmA}6  
public void sort(int[] data) { N&G(`]  
int temp; wNl6a9#  
for (int i = 0; i < data.length; i++) { *'-C/  
int lowIndex = i; ;#Qv )kS*  
for (int j = data.length - 1; j > i; j--) { v`'Iew }  
if (data[j] < data[lowIndex]) { h(~of (  
lowIndex = j; 4/\Ynb.L  
} @@R&OR  
} &\5bo=5V  
SortUtil.swap(data,i,lowIndex); fTX|vy<EMI  
} vd^Z^cpi p  
} Xg USJ*  
ub1~+T'O  
} MUtM^uY  
<WmjjD  
Shell排序: .MDSP/s  
*yZta:(w-W  
package org.rut.util.algorithm.support; >}0H5Q8@  
MVQ6I/EA4  
import org.rut.util.algorithm.SortUtil; =D?HL?  
qKeR}&b  
/** MYxuQ|w  
* @author treeroot DuAix)#FN9  
* @since 2006-2-2 pnuwj U-  
* @version 1.0 N5#j}tT  
*/ ,G?Kb#  
public class ShellSort implements SortUtil.Sort{ DBu8}2R  
xf8e"mD  
/* (non-Javadoc) ,0nrSJED  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6r%i=z  
*/ c":2<:D&  
public void sort(int[] data) { I3Z\]BI  
for(int i=data.length/2;i>2;i/=2){ @3b@]l5  
for(int j=0;j insertSort(data,j,i); %/nDG9l  
} .DnG}884  
}  cFjD*r-  
insertSort(data,0,1); zw5Ol%JF  
} 4 8; b  
c\szy&W  
/** RMs8aZCa  
* @param data cj2^wmkB  
* @param j 4}0YLwgJ  
* @param i NYxL7:9  
*/ 8U]mr+  
private void insertSort(int[] data, int start, int inc) { 09Q5gal  
int temp; "~Kph0-  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); >wYmx4W>  
} UT 7'-  
} S5L0[SZ$!  
} #+h#b%8  
s nNd7v.U6  
} 3:sx%Ci/2  
 0,#n_"  
快速排序: a>Aq/=  
weGsjy(b]N  
package org.rut.util.algorithm.support; \7o7~pll  
>G[:Q s  
import org.rut.util.algorithm.SortUtil; %\'G2  
X$%W&:  
/** L&|^y8  
* @author treeroot `6NcE-oJ  
* @since 2006-2-2 @L607[!?  
* @version 1.0 Sq2 8=1%  
*/ %l%2 hvGZ  
public class QuickSort implements SortUtil.Sort{ ?d3<GhzlR3  
CNWA!1n^Hy  
/* (non-Javadoc) i}|jHlv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @o<B>$tbu4  
*/ o=lZl_5/u;  
public void sort(int[] data) { v}!^RW 'X  
quickSort(data,0,data.length-1); ='e_9b\K  
} F,mStw:  
private void quickSort(int[] data,int i,int j){ |1(L~g  
int pivotIndex=(i+j)/2; 9RK.+ 2  
file://swap lEQj62zIQ  
SortUtil.swap(data,pivotIndex,j); iK5[P  
}-Nc}%5  
int k=partition(data,i-1,j,data[j]); vMJ_n=Vf  
SortUtil.swap(data,k,j); X VKRT7U  
if((k-i)>1) quickSort(data,i,k-1); X VH( zJ  
if((j-k)>1) quickSort(data,k+1,j); FId,/la  
NJ$Qm.S  
} :yw(Co]f  
/** -0k{O@l"  
* @param data ^`$-c9M?'  
* @param i C(xsMO'k,,  
* @param j #>z!ns  
* @return Xoq -  
*/ ;<F^&/a|yQ  
private int partition(int[] data, int l, int r,int pivot) { uaLjHR0  
do{ E;k$ICOXA  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); }1a(*s,s-^  
SortUtil.swap(data,l,r); XZTH[#MqeI  
} ':=20V  
while(l SortUtil.swap(data,l,r); m.5@q mQ  
return l; eG dFupfz  
} g\49[U}[~F  
SHnMqaq  
} Y$ KR\ m  
=|c7#GaiF  
改进后的快速排序: (@* %moo  
W:}t%agis  
package org.rut.util.algorithm.support; ATV|M[B  
&!+1GI9z  
import org.rut.util.algorithm.SortUtil; !bX   
tI.ho  
/** \SJX;7 ST  
* @author treeroot 3?+t%_[  
* @since 2006-2-2 w H`GzB"  
* @version 1.0 Ty;^3  
*/ kH[thR k}  
public class ImprovedQuickSort implements SortUtil.Sort { R3#| *)q  
ZxCXru1  
private static int MAX_STACK_SIZE=4096; + :b"0pu-H  
private static int THRESHOLD=10; '+GYw$  
/* (non-Javadoc) Nk$|nn9#'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W=n Hi\jLV  
*/ @cG+ D  
public void sort(int[] data) { |b!Bb<5  
int[] stack=new int[MAX_STACK_SIZE]; zTn.#-7y  
VAdUd {  
int top=-1; g/i.b&  
int pivot; wjKc!iB  
int pivotIndex,l,r; Q[T)jo,j%  
D~2n8h"2ye  
stack[++top]=0; g6][N{xW0  
stack[++top]=data.length-1; S} &1_I  
T7?z0DKi  
while(top>0){ 5m>f1`4JS  
int j=stack[top--]; t<^7s9r;I  
int i=stack[top--]; 3)(uC+?[  
7G Jhc  
pivotIndex=(i+j)/2; H.t fn>N|  
pivot=data[pivotIndex]; 0^d<@\  
|g<l|lqz|  
SortUtil.swap(data,pivotIndex,j); R0q|{5S  
DKNcp8<J  
file://partition #)%X0%9.*<  
l=i-1; &5%~Qw..  
r=j; +N|t:8qaf  
do{ ndvt $*  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); FaaxfcIfkw  
SortUtil.swap(data,l,r); MJn=  
} %^u e  
while(l SortUtil.swap(data,l,r); ^>y|{;`  
SortUtil.swap(data,l,j); \rH0=~F-P  
0p*Oxsy  
if((l-i)>THRESHOLD){ w)>/fG|;  
stack[++top]=i; $WQm"WAKe  
stack[++top]=l-1; HoZsDs.XZ  
} e "Tr0k  
if((j-l)>THRESHOLD){ 3_J({  
stack[++top]=l+1; <.lt?!.ZH  
stack[++top]=j; :4Y 5  
} R{9G$b1Due  
?:7$c  
} OHH\sA  
file://new InsertSort().sort(data); <CS,v)4,nH  
insertSort(data); @8cn<+"b  
} i06|P I  
/** T4;gF6(0]  
* @param data 78IY&q:v&0  
*/ ]1q`N7  
private void insertSort(int[] data) { #V@vz#bo=  
int temp; L~Xzo  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :M@#.  
} X09i+/ICK  
} <4"Bb_U  
} LiEDTXRz  
W;F=7[h  
} J2!)%mF$  
c <X( S  
归并排序: [3v&j_  
y*-D  
package org.rut.util.algorithm.support; )jw!, "_4  
?oU5H  
import org.rut.util.algorithm.SortUtil; NV\{$*j(|J  
6MQyr2c  
/** v;s^j  
* @author treeroot C]krJse@  
* @since 2006-2-2 sQO>1bh  
* @version 1.0 yk2XfY  
*/ W: 3fLXk+  
public class MergeSort implements SortUtil.Sort{  &/)To  
o4YF,c+>q  
/* (non-Javadoc) ]QF*\2b-I2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V B=jK Mi  
*/ 8y]{I^z}  
public void sort(int[] data) { Lv-M.  
int[] temp=new int[data.length]; ~W_ T3@  
mergeSort(data,temp,0,data.length-1); M"ZeK4qh  
} F^!_!V B  
~AcjB(  
private void mergeSort(int[] data,int[] temp,int l,int r){ _$T.N  
int mid=(l+r)/2; D\z`+TyJ  
if(l==r) return ; p<Vj<6.=?  
mergeSort(data,temp,l,mid); y6>fK@K~  
mergeSort(data,temp,mid+1,r); ~@D{&7@  
for(int i=l;i<=r;i++){ iMF-TR  
temp=data; w#>CYP`0k6  
} OB+QVYk"  
int i1=l; J/c5)IB|  
int i2=mid+1; .R&jRtb/E  
for(int cur=l;cur<=r;cur++){ n-CFB:L  
if(i1==mid+1) /,+&O#SX  
data[cur]=temp[i2++]; 3Io7!:+  
else if(i2>r) xp]_>WGq  
data[cur]=temp[i1++]; B~u`bn,iQ  
else if(temp[i1] data[cur]=temp[i1++];  o^x,JT  
else ^:ehG9  
data[cur]=temp[i2++]; zCj#Nfm  
} 5&}p'6*K  
} s<8|_Dt  
X7)B)r}AG  
} b2hXFwPe  
lkb,UL;V  
改进后的归并排序: [:l=>yJ{(  
KK/siG~O  
package org.rut.util.algorithm.support; 2Jt*s$  
F2',3  
import org.rut.util.algorithm.SortUtil; %5<Xa  
y+M9{[ i/O  
/** @zig{b8  
* @author treeroot >8gb/?z  
* @since 2006-2-2 Q\z9\mMG-  
* @version 1.0 F?4&qbdD  
*/ i5czm?x  
public class ImprovedMergeSort implements SortUtil.Sort { UQJ  
3moDu  
private static final int THRESHOLD = 10; o#V{mm,{Pm  
,BlNj^5f  
/* knRs{1}Pw{  
* (non-Javadoc) ^x}k1F3  
* B?;P:!/1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jy-V\.N>s  
*/ 8LGNV&Edg  
public void sort(int[] data) { OJ<V<=MYZ  
int[] temp=new int[data.length]; l'Uj"9r,  
mergeSort(data,temp,0,data.length-1); {\n?IGP?wd  
} uiaZ@  
17!<8vIV$C  
private void mergeSort(int[] data, int[] temp, int l, int r) { pUeok+k_  
int i, j, k; gO_d!x*  
int mid = (l + r) / 2; )8V=!73  
if (l == r) G4J)o?:m@  
return; uVzvUz{b  
if ((mid - l) >= THRESHOLD) 2E@y0[C?  
mergeSort(data, temp, l, mid); 'A'[N :i  
else jJe?pT]o  
insertSort(data, l, mid - l + 1); _{?-=<V'_  
if ((r - mid) > THRESHOLD) m 8P`n  
mergeSort(data, temp, mid + 1, r); ;~n^/D2.  
else 8]l(D  
insertSort(data, mid + 1, r - mid); \s,~|0_V  
$u::(s} x<  
for (i = l; i <= mid; i++) { mN1n/LNi  
temp = data; '~AR|8q?  
} tIo b  
for (j = 1; j <= r - mid; j++) { ^8 cq qu  
temp[r - j + 1] = data[j + mid]; /vw$3,*z  
} e9rgJJ  
int a = temp[l]; }k_'a^;C1  
int b = temp[r]; !5>PZ{J  
for (i = l, j = r, k = l; k <= r; k++) { %G'P!xQhy  
if (a < b) { ?l^NKbw  
data[k] = temp[i++]; 8]xYE19=  
a = temp; S.*LsrSV  
} else { _''9-t;n,  
data[k] = temp[j--]; k6(0:/C  
b = temp[j]; J(Zz^$8]<?  
} }KR"0G[f  
} |_%q@EID  
} T< o8lL  
*JiI>[  
/** qR9!DQc'  
* @param data uevhW  
* @param l !qug^F  
* @param i #?7g_  
*/ ?~tx@k$;Es  
private void insertSort(int[] data, int start, int len) { f<3lxu  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); af}JS2=$  
} E[c6*I  
} Dh)(?"^9A  
} m tVoA8(6  
} h<bCm`qj  
j-7aJj%  
堆排序: 8_T9[ ]7V8  
\n^;r|J7k  
package org.rut.util.algorithm.support; m Q^SpK #  
yhd]s0(!  
import org.rut.util.algorithm.SortUtil; W@Rb"5Gy+  
@81N{tg-  
/** * 5(%'3  
* @author treeroot TPNKvv!s  
* @since 2006-2-2 ev1:0P  
* @version 1.0 rYrvd[/*&(  
*/ %g~zE a-g  
public class HeapSort implements SortUtil.Sort{ lec3rv0)  
.a9f)^  
/* (non-Javadoc) W'R^GIHs  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T (? CDc+  
*/ (9v%66y  
public void sort(int[] data) { q5\iQ2f{WV  
MaxHeap h=new MaxHeap(); #E#Fk3-ljQ  
h.init(data); &A~hM[-  
for(int i=0;i h.remove(); hY|-l%2f  
System.arraycopy(h.queue,1,data,0,data.length); 05o<fa2HE  
} W;|%)D)y  
'q1cc5(ueV  
private static class MaxHeap{ \W 7pSV-U  
t@q==VHF  
void init(int[] data){ DY1"t7 9E  
this.queue=new int[data.length+1]; Hh* KcIRX  
for(int i=0;i queue[++size]=data; UHBMl>~z  
fixUp(size); #q6#nfi"  
} > O~   
} lg*?w/JX+  
S%jFH4#  
private int size=0; 5TLE%#G@+  
iKG,"  
private int[] queue; )&qr2Cm*  
e//jd&G  
public int get() { )a<MW66  
return queue[1]; {TaYkuWS  
} F[>Y8e<[  
nBwDq^  
public void remove() { D&G^|: G  
SortUtil.swap(queue,1,size--); \Yh*ywwP#  
fixDown(1); |g1Pr9{wy  
} I/go$@E"  
file://fixdown p;~oIy\,  
private void fixDown(int k) { .pIO<ZAFT  
int j; %$67*pY'JH  
while ((j = k << 1) <= size) { +NVXFjPC  
if (j < size %26amp;%26amp; queue[j] j++; Cm9#FA  
if (queue[k]>queue[j]) file://不用交换 2IXtIE  
break; $J#Z`%B^y  
SortUtil.swap(queue,j,k); ,@\z{}~v  
k = j; e<+b?@}=B  
} -?NAA]P5c@  
} \s7/`  
private void fixUp(int k) { /4KHf3Nr  
while (k > 1) { kc<5wY_t  
int j = k >> 1; lLLPvW[Q  
if (queue[j]>queue[k]) WG +]  
break; ~bz$]o-<  
SortUtil.swap(queue,j,k); 9K-,#a  
k = j; uo bQS!  
} vb3hDy  
} 8WC _CAP  
0bteI*L  
} ZtY?X- 4_  
~Gl5O`w(  
} FT!Xr  
:"cKxd  
SortUtil: 8y;gs1d;A  
.@$ A~/ YU  
package org.rut.util.algorithm; LMuDda  
]~ !CJ8d  
import org.rut.util.algorithm.support.BubbleSort; p-H}NQ\  
import org.rut.util.algorithm.support.HeapSort; T[MDjhv'  
import org.rut.util.algorithm.support.ImprovedMergeSort; I]BhkJ  
import org.rut.util.algorithm.support.ImprovedQuickSort; ZO>)GR2S  
import org.rut.util.algorithm.support.InsertSort; [}l#cG6 k  
import org.rut.util.algorithm.support.MergeSort; RDEK=^J  
import org.rut.util.algorithm.support.QuickSort; w:x[ kA  
import org.rut.util.algorithm.support.SelectionSort; 4gZ)9ya   
import org.rut.util.algorithm.support.ShellSort; \["I.gQ  
Wl }J=  
/** 4'Y a-x x  
* @author treeroot taMcm}*T1  
* @since 2006-2-2 a)I>Ns)  
* @version 1.0 pJuD+v  
*/ v# e*RI2}  
public class SortUtil { %,e,KcP'  
public final static int INSERT = 1; _7~q|  
public final static int BUBBLE = 2; x=kJl GT  
public final static int SELECTION = 3; f,ZJFb98  
public final static int SHELL = 4; .o]9 HbIk5  
public final static int QUICK = 5; 6C\WX(@4  
public final static int IMPROVED_QUICK = 6; A (H2Gt D  
public final static int MERGE = 7; VCwC$ts  
public final static int IMPROVED_MERGE = 8; Yv0y8Vz@  
public final static int HEAP = 9; ?Ezy0>j  
wN^^_  
public static void sort(int[] data) { Ao#bREm  
sort(data, IMPROVED_QUICK); trB-(B%5  
}  VF g(:  
private static String[] name={ .[Qi4jm>`  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" \fp'=&tp~a  
};  cp0yr:~  
fYpJ2y-sA  
private static Sort[] impl=new Sort[]{ { ft |*  
new InsertSort(), j8aH*K-l{  
new BubbleSort(), ;#mm_*L%@  
new SelectionSort(), ~+V$0Q;L  
new ShellSort(), i:jns>E  
new QuickSort(), 'H#0-V"=  
new ImprovedQuickSort(), R<ORw]  
new MergeSort(), lCTXl5J5  
new ImprovedMergeSort(), Zr=B8wuT  
new HeapSort() ?FwHqyFVlQ  
}; fzOh3FO+  
mA"[x_  
public static String toString(int algorithm){ piqh7u3~  
return name[algorithm-1]; Ya(3Z_f+VZ  
} #2"'tHf4  
@!}/$[hu1  
public static void sort(int[] data, int algorithm) { A.h0H]*Ma  
impl[algorithm-1].sort(data); \v$zU  
} {Ppb ;  
7U^{xDg.b  
public static interface Sort { N(3Bzd)   
public void sort(int[] data); kDxI7$]E  
} EBiLe;=X  
Z  
public static void swap(int[] data, int i, int j) { O+/{[9s  
int temp = data;  $&1Dl  
data = data[j]; 3to!C"~\K-  
data[j] = temp; J^S!GG'gb  
} ,X;$-.  
} ydj*Jy'  
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