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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。 }Kv h`@CiJ  
插入排序: :3111}>c  
C-s>1\I  
package org.rut.util.algorithm.support; {c v;w  
:[y]p7;{f  
import org.rut.util.algorithm.SortUtil; D+| K%_Qq  
/** .@y{)/  
* @author treeroot f|- m ^/y  
* @since 2006-2-2 @IEI%vH  
* @version 1.0 qg^(w fI  
*/ Nc G,0K  
public class InsertSort implements SortUtil.Sort{ e%PC e9  
k-{yu8*';  
/* (non-Javadoc) =}~NRmmF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l\K%  
*/ 6!4';2Q  
public void sort(int[] data) { +:Lk^Ny  
int temp; y<O@rD8iA  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,]0S4h67  
} 5."5IjZu  
} ^36M0h|R  
} ]WTf< W<  
Z 6 tE{/  
} kxwNbxC  
1Z\(:ab13  
冒泡排序: m,\i  
J$1j-\KS  
package org.rut.util.algorithm.support; =YWT|%^uX  
"4 'kb  
import org.rut.util.algorithm.SortUtil; qIB>6bv#x  
Bx+d3  
/** A|2 <A !  
* @author treeroot )J;ny!^2  
* @since 2006-2-2 6,B-:{{e"  
* @version 1.0 :lgHL3yl  
*/ {?w"hjy  
public class BubbleSort implements SortUtil.Sort{ J cP~-cp  
S  <2}8D  
/* (non-Javadoc) yPSVwe|g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L_E^}^1!  
*/ wHA/b.jH  
public void sort(int[] data) { Y [4vRzc  
int temp; PoJmW^:}  
for(int i=0;i for(int j=data.length-1;j>i;j--){ cZ^wQ5=  
if(data[j] SortUtil.swap(data,j,j-1); Kl2}o|b   
} k}X[u8A  
} *U M! (  
} f(!E!\&n^  
} FH4u$ g+  
K*[9j 0  
} l(gJLjTH%  
DUqJ y*F(  
选择排序: FQ U\0<5  
pG(Fz0b{  
package org.rut.util.algorithm.support; Jms=YLIAA  
:]yg  
import org.rut.util.algorithm.SortUtil; = PV/`I_h  
A1Ka(3"  
/** juH wHt  
* @author treeroot FtN}]@F  
* @since 2006-2-2 "2%>M  
* @version 1.0 <3lUV7!  
*/ FW_G\W.  
public class SelectionSort implements SortUtil.Sort { UkZ\cc}aC/  
 U7E  
/* bQ<b[  
* (non-Javadoc) 0D<TF>M;pn  
* Ey'J]KVW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -/zp&*0gcx  
*/ xHHV=M2l(s  
public void sort(int[] data) { Gbn4 *<N  
int temp; 6%E~p0)i%  
for (int i = 0; i < data.length; i++) { j AQU~Ol_  
int lowIndex = i; *!Y- !  
for (int j = data.length - 1; j > i; j--) { a&C.=  
if (data[j] < data[lowIndex]) { zFywC-my@  
lowIndex = j; |:N>8%@6c  
} ~H u"yAR  
} Z^*NnL.'  
SortUtil.swap(data,i,lowIndex); c yP,[?N  
} Ssf+b!e]  
} b~*i91)\  
v77fQ0w3  
}  &+G; R  
=-Nsc1&  
Shell排序: a8zZgIV  
L7}i q0  
package org.rut.util.algorithm.support; 0cFn{q'u  
\Tyf*:_F>  
import org.rut.util.algorithm.SortUtil; 5,R`@&K3D  
E M Q4yK  
/** j=9ze op %  
* @author treeroot x,\!DLq:p  
* @since 2006-2-2 !R6ApB4ZI  
* @version 1.0 csDQva\  
*/ Xu6K%]i^  
public class ShellSort implements SortUtil.Sort{ bAiJn<  
_=EZ `!%  
/* (non-Javadoc) r|fO7PD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kYlg4 .~M  
*/ B.*"Xfr8  
public void sort(int[] data) { !y. $J<  
for(int i=data.length/2;i>2;i/=2){ ;& |qSa'  
for(int j=0;j insertSort(data,j,i); qjAh6Q/E`  
} A=X-;N#  
} Y)Tl<  
insertSort(data,0,1); @5E,:)T*wR  
} 7$7n71o  
7"cv|6y|  
/** ^A!$i$NON  
* @param data k':s =IXW  
* @param j 2h q>T&8  
* @param i ]Ik%#l.G_  
*/ CGZ^hoh/  
private void insertSort(int[] data, int start, int inc) { >DP:GcTG  
int temp; {/|qjkT&W  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `!i-#~n  
} Y(r@v  
} +EkW>$  
}  ;:OsSq&  
<2<87PU  
} c AEokP  
Mu2`ODe]  
快速排序: !h:  Q  
Z0* %Rq  
package org.rut.util.algorithm.support; <kbyZXV@K  
t&}6;z 3  
import org.rut.util.algorithm.SortUtil; Vz"u>BP3~  
c-8!#~M(  
/** 5<+KR.W  
* @author treeroot &&7r+.Y  
* @since 2006-2-2 %e_"CS  
* @version 1.0 -^SA8y  
*/ 4!%F\c46  
public class QuickSort implements SortUtil.Sort{ v}[dnG  
f/y`  
/* (non-Javadoc) euQ.ArF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v(O=IUa  
*/ _0(7GE13p  
public void sort(int[] data) { DC:)Ysuj  
quickSort(data,0,data.length-1); ]KuMz p!  
} 4c159wsnQ  
private void quickSort(int[] data,int i,int j){ RU&_j* U  
int pivotIndex=(i+j)/2; (OmH~lSO.  
file://swap {{!Y]\2S  
SortUtil.swap(data,pivotIndex,j); %*W<vu>H  
F L=,YP  
int k=partition(data,i-1,j,data[j]); lA;a  
SortUtil.swap(data,k,j); _[K#O,D,  
if((k-i)>1) quickSort(data,i,k-1); 1*Ar{:+ua  
if((j-k)>1) quickSort(data,k+1,j); '2nqHX D  
ig_2={Q@  
} ziEz.Wn"  
/** `<fh+*  
* @param data lE5v-z? &|  
* @param i Ph,- sR  
* @param j 0 f/.>1M=  
* @return ]axh*J3`i  
*/ !#x=JX  
private int partition(int[] data, int l, int r,int pivot) { )S@jDaU<  
do{ MI#mAg<  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); `-UJ /{  
SortUtil.swap(data,l,r); m~`>`4  
} Is.WZY a  
while(l SortUtil.swap(data,l,r); *}! MOqP  
return l; |m G7XL,  
} }e]f  
buMq F-j  
} lU2c_4  
=o=1"o[  
改进后的快速排序: yTBS=+X  
}1H=wg>\  
package org.rut.util.algorithm.support; 5OP`c<  
}_OM$nzj  
import org.rut.util.algorithm.SortUtil; s(2GFc  
!|G(Yg7C  
/** \5><3*\  
* @author treeroot ^ 4hO8  
* @since 2006-2-2 UlovXb  
* @version 1.0 RW7(r/C  
*/ 2k -+^}r  
public class ImprovedQuickSort implements SortUtil.Sort { 9.+/~$Ht  
9w4sSj`  
private static int MAX_STACK_SIZE=4096; FG-L0X  
private static int THRESHOLD=10; !u;>Wyd W  
/* (non-Javadoc) Ob<W/-%5tH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RDQ^dui  
*/ +: Ge_-  
public void sort(int[] data) { <:;^'x>!  
int[] stack=new int[MAX_STACK_SIZE]; KLQ!b,=q  
j|(Z#3J  
int top=-1; WE!vSZ3R  
int pivot; h y-cG%f  
int pivotIndex,l,r; n&XGBwgW  
K%g;NW  
stack[++top]=0; SW?p?<  
stack[++top]=data.length-1; \E4B&!m  
 u\e\'\  
while(top>0){ 1cJsj  
int j=stack[top--]; -V<t-}h.  
int i=stack[top--]; +C{p%`<  
^y_fRP~  
pivotIndex=(i+j)/2; CnF |LTi  
pivot=data[pivotIndex]; pw020}`  
t-e5ld~a  
SortUtil.swap(data,pivotIndex,j); \F6LZZ2Lv  
(M-ZQ -  
file://partition %b!-~ Y.  
l=i-1; h#}YKWL  
r=j; Jobiq]|>  
do{ Z@rN_WXx  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 773/#c  
SortUtil.swap(data,l,r); 6tjcAsV  
} 2&(sa0*y  
while(l SortUtil.swap(data,l,r); |$lwkC)O  
SortUtil.swap(data,l,j); !fkep=  
r64u31.)  
if((l-i)>THRESHOLD){ R MYP"  
stack[++top]=i; 3K0tC=  
stack[++top]=l-1; 9h,u6e  
} -M5=r>1;  
if((j-l)>THRESHOLD){ Owv +1+B  
stack[++top]=l+1; )h$NS2B`  
stack[++top]=j; Vy)hDa[&  
} Uu p(6`7  
] gb=  
} f<jb=\}x  
file://new InsertSort().sort(data); r4 dOK] 0  
insertSort(data); T5lQIr@a  
} v6a]1B   
/** K`:=]Z8  
* @param data `(4pu6uT  
*/ F1azZ (  
private void insertSort(int[] data) { V~{ _3YY  
int temp; @Cq? :o<  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Zf*r2t1&P  
} =d;Vk  
} %,*$D} H  
} @]CF&: P A  
N1EezC'^  
} vFmJ;J  
nY?  
归并排序: x<(b|2qf  
%kI} [6J_  
package org.rut.util.algorithm.support; 0Ce]V,i6C>  
!|wzf+V  
import org.rut.util.algorithm.SortUtil; 3HV%4nZLf  
<!^ [~`  
/** :Waox"#=g  
* @author treeroot ENh8kD l5  
* @since 2006-2-2 _uxPx21g}  
* @version 1.0 f?fKhu2  
*/ `i!wq&1g7  
public class MergeSort implements SortUtil.Sort{ &rq{v!=7  
;I6s-moq_  
/* (non-Javadoc) QOFvsJ<s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H. ,;-  
*/ "u^EleE!  
public void sort(int[] data) { P!g-X%ngo  
int[] temp=new int[data.length]; T8J4C=?/  
mergeSort(data,temp,0,data.length-1); _cqy`p@"  
} 0OZMlt%z  
< +`(\  
private void mergeSort(int[] data,int[] temp,int l,int r){ 6Y*;{\Rd  
int mid=(l+r)/2; T`YwJ6N  
if(l==r) return ; +JdZPb  
mergeSort(data,temp,l,mid); ~9o6 W",  
mergeSort(data,temp,mid+1,r); Ws[D{dS/  
for(int i=l;i<=r;i++){ cA`4:gp  
temp=data; +=@^i'  
} EYzg%\HH  
int i1=l; 'VnwG  
int i2=mid+1; 3x*z\VJ  
for(int cur=l;cur<=r;cur++){ -e-e9uP  
if(i1==mid+1) <>&=n+i  
data[cur]=temp[i2++]; y2Bh?>pg  
else if(i2>r) qk{'!Ii  
data[cur]=temp[i1++]; h BMH)aU  
else if(temp[i1] data[cur]=temp[i1++]; '?Bg;Z'L%  
else a' FN 3  
data[cur]=temp[i2++]; `^F: -  
} /I{R23o  
} 7qIB7_K5  
ETw]! br  
} 8v_C5d\  
:- +4:S  
改进后的归并排序: 0&w0a P`Y  
7} O;FX+x  
package org.rut.util.algorithm.support; zQ)+/e(8  
Pe^ !$  
import org.rut.util.algorithm.SortUtil; gT52G?-  
I."p  
/** [Eq<":)  
* @author treeroot 'imU `zeo  
* @since 2006-2-2 tai Vk4  
* @version 1.0 F 1W+o?B  
*/ /XpSe<3  
public class ImprovedMergeSort implements SortUtil.Sort { :h5J r8  
n'w,n1z7  
private static final int THRESHOLD = 10; n Y w\'c  
/'&;Q7!)  
/* G?)vWM`j  
* (non-Javadoc) ;Rnhe_A.  
* N+Sq}hI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s@@1 *VQ  
*/ Z5)eREi=  
public void sort(int[] data) { $[CA&Y.  
int[] temp=new int[data.length]; ,@CfVQz  
mergeSort(data,temp,0,data.length-1); d0UZ+ RR#  
} KCqqJ}G  
HtBF=Boq  
private void mergeSort(int[] data, int[] temp, int l, int r) { iD_T P  
int i, j, k; i57( $1.  
int mid = (l + r) / 2; 4<gJ2a3  
if (l == r) %v=!'?VT  
return; ,)#.a%EKA  
if ((mid - l) >= THRESHOLD) otriif@+Z  
mergeSort(data, temp, l, mid); x-Z^Q C  
else aj7dH5SZl  
insertSort(data, l, mid - l + 1); ~<O,Vs_C/  
if ((r - mid) > THRESHOLD) 'EX4.h a5  
mergeSort(data, temp, mid + 1, r); A~71i&  
else W<'<'z5  
insertSort(data, mid + 1, r - mid); 7'j9rmTXs  
IC~ljy]y_  
for (i = l; i <= mid; i++) { O% $O(l  
temp = data; Q"}s>]k3_  
} &HF]\`RNr  
for (j = 1; j <= r - mid; j++) { L|67f4  
temp[r - j + 1] = data[j + mid]; /bcY6b=:  
} a@ W7<9fY;  
int a = temp[l]; SMO*({/  
int b = temp[r]; #5{sglC"|F  
for (i = l, j = r, k = l; k <= r; k++) { n t HT  
if (a < b) { "$@,n7 k  
data[k] = temp[i++]; 'lQYJ0  
a = temp; I'A:J  
} else { bXvbddu)}  
data[k] = temp[j--]; Bl4 dhBZoO  
b = temp[j]; P(_(w 9  
} qZsnd7o{l.  
} Phlk1*1n  
} 1n3$V:00  
Wem?{kx0  
/** Xw(3j)xQ  
* @param data IwRQL%  
* @param l 4*8&[b  
* @param i B9W/bJ6%  
*/ %UG/ak%z  
private void insertSort(int[] data, int start, int len) { A$m<@%Sz  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 04\Ta  
} 5"2@NL  
} FV8\ +ep  
}  T{Hf P  
} gMay  
p">WK<N  
堆排序: _LsYMUe  
ULu O0\W  
package org.rut.util.algorithm.support; .+uVgSN  
.f%vDBJS  
import org.rut.util.algorithm.SortUtil; ]ut?&&*  
l#ygb|=x  
/** Ou!)1UFI  
* @author treeroot `skH-lk,  
* @since 2006-2-2 &<t79d%{  
* @version 1.0 I1v@\Rb  
*/ !ABLd|tP  
public class HeapSort implements SortUtil.Sort{ GZ,j?@  
]!-R<[b 6  
/* (non-Javadoc) )BpIxWd?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e sGlMq  
*/ x{j+}'9  
public void sort(int[] data) { iz(m3k:w  
MaxHeap h=new MaxHeap(); m&ZJqsZIL  
h.init(data); CQ jV!d0j  
for(int i=0;i h.remove(); Tz2x9b\82  
System.arraycopy(h.queue,1,data,0,data.length); lXw;|dGF  
} &gJW6 <  
rNxG0^k(  
private static class MaxHeap{ d4V 2[TX  
IY~ {)X  
void init(int[] data){ fGG 9zB6  
this.queue=new int[data.length+1]; % dYI5U89  
for(int i=0;i queue[++size]=data; v$Dh.y  
fixUp(size); \Qp}|n1JY  
} [e1\A&T  
} 35}P0+  
|<'10  
private int size=0; _3I3AG0e  
[(!Q-8  
private int[] queue; %{Xm5#m  
?'T"?b<  
public int get() { 83B\+]{hD  
return queue[1]; $=7H1 w  
} #%qqL  
V02309Y  
public void remove() { 1RmBtx\<  
SortUtil.swap(queue,1,size--); p-a]"l+L  
fixDown(1); i4 P$wlO  
} @f-0X1C."N  
file://fixdown #T Z!#,q  
private void fixDown(int k) { N4' .a=1  
int j; p$B)^S%0i  
while ((j = k << 1) <= size) { d"z *Nb  
if (j < size %26amp;%26amp; queue[j] j++; W&Y4Dq^  
if (queue[k]>queue[j]) file://不用交换 ZV0) ."^Z  
break; _Wq7U1v`  
SortUtil.swap(queue,j,k);  n})  
k = j; kVy"+ZebK  
} (69kvA&|q  
} _P>1`IR  
private void fixUp(int k) { 6ch@Be5*  
while (k > 1) { KwY`<t1lA;  
int j = k >> 1; <?{ SU   
if (queue[j]>queue[k]) mI2|0RWI)l  
break; RJQ/y3  
SortUtil.swap(queue,j,k); Kw)C{L5a  
k = j; D-;J;m \  
} c"6Kd$?M  
} $[WN[J  
cKaL K#~  
} 4X<Oux*  
N;%j#(v j  
} ,oy4V^B&  
IO?~b XP  
SortUtil: B(HNB\3u  
PGC07U:B  
package org.rut.util.algorithm; 3 ATN?V@  
{6REfY c  
import org.rut.util.algorithm.support.BubbleSort; vbW\~xf  
import org.rut.util.algorithm.support.HeapSort; +:j4G^V  
import org.rut.util.algorithm.support.ImprovedMergeSort; Ly@U\%.  
import org.rut.util.algorithm.support.ImprovedQuickSort; pmE1EDPag  
import org.rut.util.algorithm.support.InsertSort; 8Xt=eL/P  
import org.rut.util.algorithm.support.MergeSort; h+\$ Z]  
import org.rut.util.algorithm.support.QuickSort; hg)!m\g  
import org.rut.util.algorithm.support.SelectionSort; H{p[Ghp  
import org.rut.util.algorithm.support.ShellSort; Zb5T90s%  
BN bb&]  
/** X7(rg W8  
* @author treeroot rElG7[+)p  
* @since 2006-2-2 )AZ`R8-A  
* @version 1.0 B{=,VwaP_  
*/ #)Id J]  
public class SortUtil { 4c493QOd  
public final static int INSERT = 1; 2b vYF ;<r  
public final static int BUBBLE = 2; 6"#Tvj~-8  
public final static int SELECTION = 3; ^;v.ytO*  
public final static int SHELL = 4; PDa06(t7  
public final static int QUICK = 5; J{v6DYhi  
public final static int IMPROVED_QUICK = 6; 7ipY*DT8  
public final static int MERGE = 7; c{r6a=C  
public final static int IMPROVED_MERGE = 8; -F~9f>  
public final static int HEAP = 9; B%?|br  
V3. vE,  
public static void sort(int[] data) { OmQuAG ^\x  
sort(data, IMPROVED_QUICK); lVO(9sl*i  
} *HfW(C$  
private static String[] name={ *AJezhR  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" "1\RdTw  
}; 6 I>xd  
s2 t-T0;  
private static Sort[] impl=new Sort[]{ 3vEjf  
new InsertSort(), !3gpiQH{  
new BubbleSort(), knj,[7uh  
new SelectionSort(), Ix l"'Q_z  
new ShellSort(), n$Oky-P"  
new QuickSort(), =&<$I  
new ImprovedQuickSort(), :D)&>{?  
new MergeSort(), D6 @4  
new ImprovedMergeSort(), +BTNm66Z  
new HeapSort() 4h0jX 9  
}; ztt%l #  
q=L* 99S  
public static String toString(int algorithm){ LKwUpu!  
return name[algorithm-1]; Tef3 Z6  
} NU 6Kh7  
Y+5A2Z)f[  
public static void sort(int[] data, int algorithm) { kA9 X!)2w  
impl[algorithm-1].sort(data);  z]R!l%`  
} [Z`:1_^0}  
5 <>agK]  
public static interface Sort { @=| b$E  
public void sort(int[] data); s9Q)6=mE  
} fgz'C?  
jn3|9x  
public static void swap(int[] data, int i, int j) { "/]tFY%Y  
int temp = data; jH#^O ;A  
data = data[j]; )*AA9   
data[j] = temp; {UVm0AeUq  
} oVZ8p-  
} JV*,!5  
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