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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。 hiO:VA  
插入排序: |TM&:4D]^  
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package org.rut.util.algorithm.support; Au3> =x`  
$.{CA-~%[  
import org.rut.util.algorithm.SortUtil; hd{Vz{;W  
/** Hbwjs?Vq?]  
* @author treeroot >`L)E,=/  
* @since 2006-2-2 \)Jv4U\;  
* @version 1.0 rw_T&>!  
*/ hpp>+=  
public class InsertSort implements SortUtil.Sort{ =qPk'n9i8  
Q-;ltJ  
/* (non-Javadoc) N5 ITb0Tv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y8!T4dkn  
*/ [GKSQt{)  
public void sort(int[] data) { G tI]6t  
int temp; B198_T!  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wUkLe-n,dE  
} KQ'fp:5|/@  
} k<W n  
} p_h)|*W{  
dv3+x\`9  
} L-ans2?  
/?X1>A:*  
冒泡排序: Cr0 \7  
XgY( Vv  
package org.rut.util.algorithm.support; N_S>%Z+  
o %#Z  
import org.rut.util.algorithm.SortUtil; !g:UkU\J  
;-84cpfu  
/** )US|&> o8  
* @author treeroot CORX .PQ  
* @since 2006-2-2 ?3 J  
* @version 1.0 f:iK5g  
*/ 'G z>X :  
public class BubbleSort implements SortUtil.Sort{ [{3WHS.  
lSP{9L6  
/* (non-Javadoc) bh=d'9B@&J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xTQV?g J  
*/ 7Cf%v`B4D  
public void sort(int[] data) { xo{f"8}^  
int temp; E:BEQ:(~L  
for(int i=0;i for(int j=data.length-1;j>i;j--){ !ZP1?l30  
if(data[j] SortUtil.swap(data,j,j-1); ]e+IaZ[Wo  
} TnET1$@qr*  
} y@g{:/cmO  
} rXo2MX@u  
} A(AyLxB47*  
0^44${bA  
} AfvTStwr  
2 =tPxO')B  
选择排序: Wo5G23:xz  
YN 4P >d  
package org.rut.util.algorithm.support; @'[w7HsJ  
gOw|s1`2,  
import org.rut.util.algorithm.SortUtil; }8Wp X2U  
~h-G  
/** &|<~J (L;  
* @author treeroot R =HN>(U  
* @since 2006-2-2 ,u QLXF2  
* @version 1.0 EVmQ"PKL'  
*/ xD#PM |I  
public class SelectionSort implements SortUtil.Sort { R7T"fN  
[ANit0-~  
/* :7Mo0,Bw,  
* (non-Javadoc) jM J[6qj  
* j-$aa;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qcke8Q  
*/ 'ntb.S)  
public void sort(int[] data) { aq"E@fb  
int temp; 18w[T=7)  
for (int i = 0; i < data.length; i++) { Zx25H"5j  
int lowIndex = i; Cq1t[a  
for (int j = data.length - 1; j > i; j--) { t&SJ!>7_c  
if (data[j] < data[lowIndex]) { S6}_Z  
lowIndex = j; S}e*~^1J  
} Wf_aEW&n  
} /6F 1=O(c>  
SortUtil.swap(data,i,lowIndex); @FkNT~OZ  
} &dvJg  
} QHr 3J  
DLyHC=%{+h  
} ;~z>GJox  
8s8q`_.)(  
Shell排序: uW;Uq=UN  
=B1t ?( "  
package org.rut.util.algorithm.support; h0n0Dc{4  
k_V1x0sZ  
import org.rut.util.algorithm.SortUtil; ,Z_nV+l_  
|NtT-T)7  
/** i#lvt#2J0  
* @author treeroot 8q7KqYu  
* @since 2006-2-2 doc5;?6   
* @version 1.0 psRm*,*O  
*/ ~'fa,XZ<  
public class ShellSort implements SortUtil.Sort{ BO[Q"g$Kon  
X_s;j5ur  
/* (non-Javadoc) #CV(F$\1{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2)RW*Qu;+  
*/ e_]1e 7t  
public void sort(int[] data) { i )3Y\ u  
for(int i=data.length/2;i>2;i/=2){ i[3$Wi$  
for(int j=0;j insertSort(data,j,i); #2yOqUO\  
} nIph[Vs-Z  
} r_)-NOp  
insertSort(data,0,1); NL&g/4A[a  
} g/z9bOgIX  
&[cL%pP  
/** >jl"Yr#  
* @param data +Q-~~v7,  
* @param j q*{"6"4(  
* @param i Zy*}C,Z  
*/ AaTtY d  
private void insertSort(int[] data, int start, int inc) { vW$] :).  
int temp; -<z'f){gb  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ~w]1QHA'f  
} h:bs/q+-  
} p6=#LwL'  
} <S$y=>.9  
l'16B^  
} W]Ph:O ^5c  
-m'a%aog  
快速排序: &<UOi@  
^;@Bz~Z  
package org.rut.util.algorithm.support; '3hvR4P  
)1x333.[c  
import org.rut.util.algorithm.SortUtil; 0l 3RwWj  
4QI vxH  
/** $ @1&G~x  
* @author treeroot `SW`d<+L  
* @since 2006-2-2 -IX;r1UD  
* @version 1.0 MeplM$9  
*/ {{EQM +  
public class QuickSort implements SortUtil.Sort{ RuRJjcnY  
gu:..'V  
/* (non-Javadoc) N,[M8n,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?J6hiQvL  
*/ qA30z%#z_  
public void sort(int[] data) { /=r&9P@Ay<  
quickSort(data,0,data.length-1); \17)=W  
} ?,%N?  
private void quickSort(int[] data,int i,int j){ ?q,x?`|(8  
int pivotIndex=(i+j)/2; .!6ufaf$  
file://swap sg6cq_\  
SortUtil.swap(data,pivotIndex,j); ,MvvW{EY  
IB;y8e,  
int k=partition(data,i-1,j,data[j]); &P+cTN9)  
SortUtil.swap(data,k,j); P2s0H+<  
if((k-i)>1) quickSort(data,i,k-1); wK\SeX  
if((j-k)>1) quickSort(data,k+1,j); dO8Z {wfs  
[FCNW0NV  
} A|a\pL`@  
/** Hd2_Cg FB  
* @param data EhVnt#`Si  
* @param i x)Th2es\  
* @param j 4@W.{|2~  
* @return K 6G n  
*/ fsmH];"GD  
private int partition(int[] data, int l, int r,int pivot) { Sqge5v  
do{ X0P$r6 ;  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); PCIC*!{  
SortUtil.swap(data,l,r); LnyA5T  
} v0xi(Wu  
while(l SortUtil.swap(data,l,r); 6R,;c7Izhd  
return l; #UI`G3w<  
} }}xR?+4A  
-OW$  
} oz0-'_  
:m~lgb<  
改进后的快速排序: Fwqv 1+  
_j2`#|oG  
package org.rut.util.algorithm.support; gSv<.fD"  
d)AkA\neWo  
import org.rut.util.algorithm.SortUtil; M1>a,va8Zq  
G^OSXf5  
/** 2>r.[  
* @author treeroot wvYxL c#p0  
* @since 2006-2-2 tw(2V$J  
* @version 1.0 %B?5l^W@  
*/ z>&D~0  
public class ImprovedQuickSort implements SortUtil.Sort { d+w<y~\ q  
u,]yd*  
private static int MAX_STACK_SIZE=4096; df)1} /*L  
private static int THRESHOLD=10; g bh:Y}_FU  
/* (non-Javadoc) $R5-JvJJH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~iSW^mi  
*/ axl?t|~I  
public void sort(int[] data) { "LWp/  
int[] stack=new int[MAX_STACK_SIZE]; Eg:p_F*lr  
2#[Y/p  
int top=-1; ~@O4>T+VW  
int pivot; . =5Jpo  
int pivotIndex,l,r; iUKj:q:  
h=tY 5]8  
stack[++top]=0; E}GSii%S  
stack[++top]=data.length-1; .edZKmC6  
.`p_vS9  
while(top>0){ -I*A  `M  
int j=stack[top--]; /l`XJs  
int i=stack[top--]; O^:h_L  
GwV FD%  
pivotIndex=(i+j)/2; gdT_kb5HL8  
pivot=data[pivotIndex]; K|/a]I":  
.s?OKy  
SortUtil.swap(data,pivotIndex,j); }X?*o `sW  
#+G2ZJxL|  
file://partition QUDVsN#  
l=i-1; )X/Faje  
r=j; w;(gi  
do{ rifxr4c[X>  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Gpu?z- )  
SortUtil.swap(data,l,r); #.)>geLC>9  
} lN'/Z&62  
while(l SortUtil.swap(data,l,r); M&FuXG%  
SortUtil.swap(data,l,j); 8iNAs#s  
(?!0__NN;  
if((l-i)>THRESHOLD){ 1sjn_fPz  
stack[++top]=i; \_E.%K  
stack[++top]=l-1; Wd AGZUp  
} m{ fQL  
if((j-l)>THRESHOLD){ ar|[D7Xrq\  
stack[++top]=l+1; \gkajY-?  
stack[++top]=j; dWy1=UQfP  
} Z]f2&  
L'Zud,JKg  
} d@tr]v5 B  
file://new InsertSort().sort(data); `[CJtd2\  
insertSort(data); <3 }l8Z  
} AF$o >f  
/** j%;)CV G"  
* @param data ArYF\7P  
*/ Z L</  
private void insertSort(int[] data) { ([*t.  
int temp; DcA'{21  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !&lPdEc@T  
} njMy&$6a##  
} ~P_kr'o  
} P{eRDQ=  
u2]g1XjeG  
} %ZyPK,("  
!@ {[I:5  
归并排序: 6sl<Z=E#  
Ba0D"2CgY  
package org.rut.util.algorithm.support; dA/o4co  
AFTed?(  
import org.rut.util.algorithm.SortUtil; v s|6w w  
|:+pPh!-  
/** 8 -;ZPhN&  
* @author treeroot {Ch"zuPX  
* @since 2006-2-2 >-lL -%N_  
* @version 1.0 IGT_ 5te  
*/ f+Medc~  
public class MergeSort implements SortUtil.Sort{ W;dzLgc  
2gAdZE&Y  
/* (non-Javadoc) FM"BTA:C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~#_$?_/(  
*/ lMez!qx,=  
public void sort(int[] data) { N>%KV8>{L  
int[] temp=new int[data.length]; y=xe<#L  
mergeSort(data,temp,0,data.length-1); g/Jj]X#r  
} cGta4;  
$L8s/1up  
private void mergeSort(int[] data,int[] temp,int l,int r){ K)UOx#xe1  
int mid=(l+r)/2; a=.db&;vY  
if(l==r) return ; 8M+F!1-#  
mergeSort(data,temp,l,mid); I%>]!X  
mergeSort(data,temp,mid+1,r); ?{,)XFck  
for(int i=l;i<=r;i++){ j jT 2k  
temp=data; dG>Wu o  
} OCO,-(  
int i1=l; EJaaW&>[  
int i2=mid+1; u6I0<i_KZ  
for(int cur=l;cur<=r;cur++){ X1[R*a/p  
if(i1==mid+1) ;To+,`?E;q  
data[cur]=temp[i2++]; '3UIriY6  
else if(i2>r) x ETVt q  
data[cur]=temp[i1++]; soQzIx  
else if(temp[i1] data[cur]=temp[i1++]; ; :\,x  
else GVc[p\h(  
data[cur]=temp[i2++]; | ,l=v`/  
} I u~aTgHX%  
} QqK{~I|l  
VE"0 VB.  
} `) !2E6 =  
+6)kX4  
改进后的归并排序: C+]q  
7U )qC}(  
package org.rut.util.algorithm.support; \v P2B  
27 YLg c  
import org.rut.util.algorithm.SortUtil; *o\Y~U-so  
dms:i)L2  
/** zV(tvt  
* @author treeroot i~Ob( YIH  
* @since 2006-2-2 2N8sq(LK{  
* @version 1.0 ^@LhUs>3  
*/ V?V)&y] 4  
public class ImprovedMergeSort implements SortUtil.Sort { Nw$[a$^n  
KYmWfM3^  
private static final int THRESHOLD = 10; l)rvh#D  
bb0McEQy  
/* (T#(A4:6S  
* (non-Javadoc) ocA'goI-  
* ?r'TH/>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yZ~eLWz  
*/ IJBJebqL  
public void sort(int[] data) { p<0kmA<B/  
int[] temp=new int[data.length]; )>X|o$2  
mergeSort(data,temp,0,data.length-1); . I&)MZ>n  
} + yP[(b/  
)bCG]OM7<  
private void mergeSort(int[] data, int[] temp, int l, int r) { >7(~'#x8A"  
int i, j, k; 0@e}hv;  
int mid = (l + r) / 2; bR8 HGH28  
if (l == r) PxVI {:Uz  
return; )3`  
if ((mid - l) >= THRESHOLD) EBDC'^  
mergeSort(data, temp, l, mid); xX&>5 "  
else zEPx  
insertSort(data, l, mid - l + 1); z1SMQLk  
if ((r - mid) > THRESHOLD) rb}wv16?  
mergeSort(data, temp, mid + 1, r); 23\j1?  
else 77&^$JpM  
insertSort(data, mid + 1, r - mid); 400Tw`AiJ  
G0; EbJ/&  
for (i = l; i <= mid; i++) { WP@JrnxO\`  
temp = data; vrm{Ql&  
} .1z$ A  
for (j = 1; j <= r - mid; j++) { J.e8UQ@=5  
temp[r - j + 1] = data[j + mid]; D@r n@N  
} qvfAG 0p  
int a = temp[l]; @a.6?.<L  
int b = temp[r]; Uygw*+  
for (i = l, j = r, k = l; k <= r; k++) { U3|&Jee  
if (a < b) { $G-N0LV  
data[k] = temp[i++]; ox\B3U%`p}  
a = temp;  fBWJ%W  
} else { 5Du>-.r  
data[k] = temp[j--]; hDD~,/yVxs  
b = temp[j]; y5AXL5  
} +%le/Pg@  
} X~)V)'R  
} \A3>c|  
Ky '3z"  
/** THbtu*El  
* @param data 32bkouq  
* @param l v-7Rb )EP  
* @param i gSv[4,hXd  
*/ L%o65  
private void insertSort(int[] data, int start, int len) { 8W1K3[Jj<  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); .y;\puNq  
} 9OQ0Yc!3  
} kP}hUrDX5  
} Fyh?4!/.  
} -M>K4*%K  
5}d/8tS  
堆排序: SN[L4}{  
'!yS72{$2  
package org.rut.util.algorithm.support; g@k#J"Q '[  
,2 g M-  
import org.rut.util.algorithm.SortUtil; ]4 K1%ZV  
.n)!ZN  
/** az \<sWb#  
* @author treeroot ,yM}]pwlB  
* @since 2006-2-2 b5n]Gp  
* @version 1.0 ].k+Nzf_  
*/ $xUzFLh=`  
public class HeapSort implements SortUtil.Sort{ B.Zm$JZ:  
veX"CY`hn  
/* (non-Javadoc) z*dQIC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) * Y%<b86U  
*/ !0!U01SWa  
public void sort(int[] data) { Hn#GS9d_?  
MaxHeap h=new MaxHeap(); C`yvBt40r  
h.init(data); u^aFj%}]L  
for(int i=0;i h.remove(); EZ%w=  
System.arraycopy(h.queue,1,data,0,data.length); {w |dM#  
} Z92iil;t  
Bg 7j5  
private static class MaxHeap{ jIx8k8  
O2`oe4."vd  
void init(int[] data){ I+Ncmg )>  
this.queue=new int[data.length+1]; Z#OhYm+y  
for(int i=0;i queue[++size]=data; F}6DB*  
fixUp(size); X6LhM  
} !cEbz b  
} eq@am(#&kY  
<THZ2`tTK3  
private int size=0; d}{LM!s  
)h>\05|T  
private int[] queue; ,]PyDq6  
i}/e}s<-6  
public int get() { (|0.m8D~D  
return queue[1]; BR& Aq  
} hzT{3YtY2  
nabBU4;h  
public void remove() { 99l>CYXd  
SortUtil.swap(queue,1,size--); /~3N@J  
fixDown(1); y*VQ]aJ  
} zb>f;[  
file://fixdown P"(z jG9-  
private void fixDown(int k) { heE}_,$|  
int j; ia%z+:G  
while ((j = k << 1) <= size) { @uI?  
if (j < size %26amp;%26amp; queue[j] j++; (O)\#%,@R  
if (queue[k]>queue[j]) file://不用交换 {fGd:2dh  
break; B ~fSMB6h  
SortUtil.swap(queue,j,k); g>2aIun_Q  
k = j; N$\ bg|v  
} doP$N3Zm  
} % v;e  
private void fixUp(int k) { w)+wj[6 E  
while (k > 1) { ?PBa'g  
int j = k >> 1; :J^qjAV  
if (queue[j]>queue[k]) z$JX'(<Z7  
break; +hE',i.  
SortUtil.swap(queue,j,k); bA}AD`5  
k = j; {Ge+O<mD  
} v8ba~  
} 2 ;JQX!  
Vy-28icZ`  
} '3A+"k-}mh  
2O eshkE  
} K(<$.  
8zhBA9Y#~  
SortUtil: y }\r#"Z`  
x^A7'ad0  
package org.rut.util.algorithm; ""co6qo#>  
1HMUHZT  
import org.rut.util.algorithm.support.BubbleSort; >\V6+$cNp  
import org.rut.util.algorithm.support.HeapSort; ]UDd :2yt  
import org.rut.util.algorithm.support.ImprovedMergeSort; q[7CPE0n  
import org.rut.util.algorithm.support.ImprovedQuickSort; 9<yAQ?7 L  
import org.rut.util.algorithm.support.InsertSort; *)u?~r(F  
import org.rut.util.algorithm.support.MergeSort; bS>R5*Zp  
import org.rut.util.algorithm.support.QuickSort; HF"Eys  
import org.rut.util.algorithm.support.SelectionSort; >~_J q|KBB  
import org.rut.util.algorithm.support.ShellSort; 6+.>5e  
a:85L!~:l  
/** *HR +a#o  
* @author treeroot 9B /s  
* @since 2006-2-2 >lrhHU  
* @version 1.0 8z Y)J#  
*/ .*BA 1sjE  
public class SortUtil { #~L!pKM  
public final static int INSERT = 1; 5sCFzo<=vh  
public final static int BUBBLE = 2; ;HDZ+B  
public final static int SELECTION = 3; v? L  
public final static int SHELL = 4; "!O1j r;  
public final static int QUICK = 5; >c<pDNt?  
public final static int IMPROVED_QUICK = 6; z v>Oh#  
public final static int MERGE = 7; e@E17l-  
public final static int IMPROVED_MERGE = 8; _a](V6  
public final static int HEAP = 9; )l&D]3$6K  
zh\$t]d<I  
public static void sort(int[] data) { c!It ^*  
sort(data, IMPROVED_QUICK); B MM--y@  
} ',7a E@PJ  
private static String[] name={ zJ+3g!  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" "+)K |9T#  
}; B{C_hy-fw  
iK#/w1`  
private static Sort[] impl=new Sort[]{ ldGojnS  
new InsertSort(), wJe?t$ac?  
new BubbleSort(), UUeB;'E+  
new SelectionSort(), >c4/ ?YV  
new ShellSort(), _T5)n=|  
new QuickSort(), ?s?$d&h  
new ImprovedQuickSort(), =7%o E[  
new MergeSort(), V|'1tB=;*1  
new ImprovedMergeSort(), !nd*W"_gQ/  
new HeapSort() qi(*ty  
}; b7HffO O  
d H? ScXM=  
public static String toString(int algorithm){ .Pe9_ZH$W  
return name[algorithm-1]; ZtK\HDdp  
} Gh}yb-$N`&  
0w %[  
public static void sort(int[] data, int algorithm) { UL( lf}M  
impl[algorithm-1].sort(data); D'b#,a;V  
} %T!J$a)qf  
?P/AC$:|I  
public static interface Sort { 6BocGo({  
public void sort(int[] data); tu0aD%C  
} \}5p0.=  
d,0 }VaY=D  
public static void swap(int[] data, int i, int j) { PE"v*9k  
int temp = data; Ya#h'+}  
data = data[j]; paW@\1Q  
data[j] = temp; .$!{-v[  
} eS'yGY0b  
} fKHE;A*>%  
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