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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。 Yv}V =O%  
插入排序: ~,199K#'  
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package org.rut.util.algorithm.support; EfTuHg$pe  
XeGtge/}T  
import org.rut.util.algorithm.SortUtil; w 0V=49  
/** Uc j eB  
* @author treeroot e.8(tEqZ1  
* @since 2006-2-2 cjTV~(i'4A  
* @version 1.0 1 uKWvp0\  
*/ 8SJi~gV  
public class InsertSort implements SortUtil.Sort{ 4T]n64Yid  
+:JyXF u  
/* (non-Javadoc) =Zg%& J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vh%=JL sK  
*/ Gw\-e;,  
public void sort(int[] data) { F;I %9-R  
int temp; _{d0Nm  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _A[k&nO!&J  
} U6 4WTS@  
} X>0$zE@0  
} Q db~I#}m'  
epWTZV(1x  
} n/>^!S  
!!jitFHzb  
冒泡排序: ,};UD  W  
DU@ZLk3  
package org.rut.util.algorithm.support; Q Pel n)  
GI]sE]tZ  
import org.rut.util.algorithm.SortUtil; 9e`.H0  
]HpKDb0+  
/** A7|CG[wZ  
* @author treeroot W.B;Dy,Y  
* @since 2006-2-2 8$c_M   
* @version 1.0 n!nXM  
*/ N+l 0XjZD9  
public class BubbleSort implements SortUtil.Sort{ Rh=,]Y  
fR:BF47  
/* (non-Javadoc) ^rHG#^hA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r)9&'m.:  
*/ 3G4N0{i  
public void sort(int[] data) { ZQ&A '(tt4  
int temp; s8/sH];  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ,KM-DCwcG  
if(data[j] SortUtil.swap(data,j,j-1); `oDs]90  
} KGVAP  
} qIO<\Y l  
} xK8n~.T('  
} lphELPh  
E[z8;A^:0  
} $p(,Qz(.8  
AGH7z  
选择排序: %Ydzzr3  
x_C#ALq9  
package org.rut.util.algorithm.support; w<m) T  
cz2guUu  
import org.rut.util.algorithm.SortUtil; qtqTLl@u  
8 |@WuD  
/** 't3@dz_dG  
* @author treeroot [(hB%x_"  
* @since 2006-2-2 /SXms'C  
* @version 1.0 Sxj _gn  
*/ SGZ]_  
public class SelectionSort implements SortUtil.Sort { YTQom!O  
ZPM,ZGlu:  
/* 0+i\j`O&  
* (non-Javadoc) SP&Y|I$:  
* X_j=u1*5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X5(S+;v"^  
*/ #Cwzk{p(  
public void sort(int[] data) { Eyv|~D  
int temp; isdEs k#A.  
for (int i = 0; i < data.length; i++) { L>,j*a_[  
int lowIndex = i; d%"?^e  
for (int j = data.length - 1; j > i; j--) { #4?(A[]>H  
if (data[j] < data[lowIndex]) { C< :F<[H  
lowIndex = j; ~#doJ:^H3  
} _n[4+S*v(  
} cH5@Jam  
SortUtil.swap(data,i,lowIndex); *zf@J'  
} AADvk_R  
} E^RPK{zO  
NXwlRMbo  
} ,P?R 3  
v4:g*MD?~  
Shell排序: aCL_cVOMR  
Is87 9_Z  
package org.rut.util.algorithm.support; ";)SA,Z  
j3!]wolY  
import org.rut.util.algorithm.SortUtil;  >%~E <  
@Ju!|G9z/p  
/** 5`ma#_zk|f  
* @author treeroot m &U $V  
* @since 2006-2-2 [vIHYp  
* @version 1.0 JD\:bI  
*/ m[@7!.0=  
public class ShellSort implements SortUtil.Sort{ `7;I*|  
a]-.@^:_i  
/* (non-Javadoc) ]Z@+ |&@L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }F*u 9E  
*/ F-=W7 D:[c  
public void sort(int[] data) { G 4jaHpPi  
for(int i=data.length/2;i>2;i/=2){ :QSCky*i  
for(int j=0;j insertSort(data,j,i); *mqoyOa  
} #-QQ_  
} ++s=$D  
insertSort(data,0,1); IZ2c<B5&  
} 8Nr,Wq  
uW.)(l  
/** AT#&`Ew  
* @param data qR W WG&  
* @param j [WOLUb  
* @param i ~%6GF57gC  
*/ jLULf+ 8&  
private void insertSort(int[] data, int start, int inc) { zU+` o?al  
int temp; KcGM=z?:  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); -3M6[`/  
} hM!D6: t  
} [l+1zt0w0  
} t"0Z=`Wi  
py,B6UB5  
} w$JG:y#  
d83K;Ryd  
快速排序: 1|za>N6[yu  
=6mnXpM.  
package org.rut.util.algorithm.support; 0]dL;~0y.  
bK)gB!  
import org.rut.util.algorithm.SortUtil; =[O;/~J%:  
UB3b  
/** LL~bq(b  
* @author treeroot 8:j8>K*6  
* @since 2006-2-2 3pSkk  
* @version 1.0 x(e =@/qp  
*/ Z4\$h1tl  
public class QuickSort implements SortUtil.Sort{ _)q,:g~fu  
\W<r`t4v  
/* (non-Javadoc) +U(m b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mVYLI!n}0#  
*/ 6Xjr0 C+  
public void sort(int[] data) { zwAkXj  
quickSort(data,0,data.length-1); c k=  
} 3P1OyB  
private void quickSort(int[] data,int i,int j){ \R >!HY  
int pivotIndex=(i+j)/2; ?#F}mOVAa  
file://swap )'{:4MX  
SortUtil.swap(data,pivotIndex,j); q]%c 6{w  
UR~9*`Z ,  
int k=partition(data,i-1,j,data[j]); .P[ %t=W  
SortUtil.swap(data,k,j); Z5/g\G[  
if((k-i)>1) quickSort(data,i,k-1); :tu_@3bg-  
if((j-k)>1) quickSort(data,k+1,j); V$Y5EX  
:@6,|2b e=  
} kcd~`+C  
/** J4 yT|  
* @param data 9}`A_KzFx  
* @param i ~Co7%e V  
* @param j D.2HM  
* @return b {e nD  
*/ e2~i@vq  
private int partition(int[] data, int l, int r,int pivot) { (,<ti):  
do{ 5b_[f(  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Zy2@1-z6  
SortUtil.swap(data,l,r); fu/v1Nhm  
} [@@Ovv  
while(l SortUtil.swap(data,l,r); 4  |$|]E  
return l; > m GO08X  
} GI}h )T  
pQaP9Y{OK  
} XDvT#(Pu  
jV^Dj  
改进后的快速排序: kI974:e42  
QE7 r{  
package org.rut.util.algorithm.support; S8+Xk= x  
;|v6^2H"  
import org.rut.util.algorithm.SortUtil; QKYGeT7&Y'  
WP1>)  
/** ``o:N`  
* @author treeroot I(r^q"  
* @since 2006-2-2 ^+:_S9qst  
* @version 1.0 #2c-@),  
*/ MjMPbGUX{  
public class ImprovedQuickSort implements SortUtil.Sort { =4 &/Pr  
x\j6=|  
private static int MAX_STACK_SIZE=4096; 5fS89?/?  
private static int THRESHOLD=10; .}.5|z} A  
/* (non-Javadoc) ]@bo;.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v7VJVLH,I7  
*/ 4NxtU/5-sU  
public void sort(int[] data) { fG O.wb  
int[] stack=new int[MAX_STACK_SIZE]; ~SkdP7 )  
i*j[j~2>C;  
int top=-1; EAq/Yw2$  
int pivot; j r6)K;:.  
int pivotIndex,l,r; F9]j{'#  
DJlY~}v#_  
stack[++top]=0; Zs!)w9y&V  
stack[++top]=data.length-1; D,+I)-k<  
6.|f iQs ]  
while(top>0){ M:h~;+s  
int j=stack[top--]; HPs$R [  
int i=stack[top--]; H@er"boi  
6/9 A'!4C  
pivotIndex=(i+j)/2; Ftj3`Mu  
pivot=data[pivotIndex]; &;7\/m*W1  
V 0R;q  
SortUtil.swap(data,pivotIndex,j); r7sPFM  
, %X~/V  
file://partition r?d601(fa  
l=i-1; ,WbO8#z+  
r=j; uD_|/(  
do{ E]6C1C&K  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); :h1itn  
SortUtil.swap(data,l,r); nK Rx_D$d  
} [Fe`}F}Co8  
while(l SortUtil.swap(data,l,r); o9~Z! &p  
SortUtil.swap(data,l,j); $Y][-8{t  
nn$,|/  
if((l-i)>THRESHOLD){ [|V<e+>T/  
stack[++top]=i; he&*N*of:  
stack[++top]=l-1; RH^8"%\  
} [-_u{j  
if((j-l)>THRESHOLD){ a9}cpfG=)  
stack[++top]=l+1; 2 5h.u>6@{  
stack[++top]=j; e4Ol:V  
} dNG>:p  
& :x_  
} -gH1`*YL  
file://new InsertSort().sort(data); | "DQ^)3Pi  
insertSort(data); n_sCZ6uXEQ  
} =dUeQ?>t=  
/** mYXe0E#6  
* @param data em<(wJ-Y  
*/ fZH:&EP  
private void insertSort(int[] data) { ?n>h/[/  
int temp; fb4/LVg'J  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); OT{wqNI  
} $/nU0W  
} +j&4[;8P:  
} #0"Fw$Pc  
Hb=4k)-/]  
} [GZ%K`wx  
rgdDkWLXC  
归并排序: ^KhA\MzY  
a_w# ,^/P  
package org.rut.util.algorithm.support; <i`Ipj  
Jj_E/c"  
import org.rut.util.algorithm.SortUtil; IIUoB!`  
X a#`VDh  
/** z%(m:/N70  
* @author treeroot Y~hBVz2g  
* @since 2006-2-2 ?SRG;G1  
* @version 1.0 D`,W1Z#  
*/ ?kX$Y{M}  
public class MergeSort implements SortUtil.Sort{ L|EvI.f  
R8Nr3M9 )  
/* (non-Javadoc) y|Tb&XPD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :% )va  
*/ %fnL  
public void sort(int[] data) { '@i/?rNi%N  
int[] temp=new int[data.length]; sL75C|f9  
mergeSort(data,temp,0,data.length-1); x6\EU=,  
} $(K[W}  
CEq0ZL-W  
private void mergeSort(int[] data,int[] temp,int l,int r){ k?3NF:Yy7  
int mid=(l+r)/2; ob05:D_bc9  
if(l==r) return ; UUc{1"z{  
mergeSort(data,temp,l,mid); ({i}EC7{  
mergeSort(data,temp,mid+1,r); XT> u/Z)  
for(int i=l;i<=r;i++){ .z4 fJx  
temp=data; cm@q{(r  
} :{bvCos<)  
int i1=l; |RS9N_eRt  
int i2=mid+1; Pky/fF7e  
for(int cur=l;cur<=r;cur++){ "MQy>mD6  
if(i1==mid+1) 3Cmbt_WV  
data[cur]=temp[i2++]; X|fl_4NC>  
else if(i2>r) luRtuXn[8  
data[cur]=temp[i1++]; pyYm<dn  
else if(temp[i1] data[cur]=temp[i1++]; dc.9:u*w  
else W5PNp%+KE  
data[cur]=temp[i2++]; dU<\ FW_  
} ]=!wMn**  
} N^z4I,GV(  
8 9o&KF]  
} I ,8   
>uT,Z,7O  
改进后的归并排序: s :ig;zb  
6U~AKq"+f  
package org.rut.util.algorithm.support; ZFwUau  
7.mY@  
import org.rut.util.algorithm.SortUtil; 4Bg"b/kF  
qM78s>\-h  
/** $2uk;&"?A=  
* @author treeroot nX%b@cOXj  
* @since 2006-2-2 3}R}|Ha J#  
* @version 1.0 Wd "<u2  
*/ ,yc_r= _  
public class ImprovedMergeSort implements SortUtil.Sort { U[7 &   
w3l2u1u  
private static final int THRESHOLD = 10; c IK  
Z 0&=Lw  
/* N~NUBEKcp  
* (non-Javadoc) ^f6p w!  
* Xb#!1hA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )1?#q[x  
*/ cG!\P:re  
public void sort(int[] data) { (Y i 1U~{:  
int[] temp=new int[data.length]; oP >+2.i  
mergeSort(data,temp,0,data.length-1); >,%or cN  
} zI-]K,!  
u7||]|2  
private void mergeSort(int[] data, int[] temp, int l, int r) { (|O9L s7N  
int i, j, k; 9r2l~zE  
int mid = (l + r) / 2; I;xSd.-  
if (l == r) rfo7\'yk  
return; \dAs<${(  
if ((mid - l) >= THRESHOLD) ,f*Q3 S/I  
mergeSort(data, temp, l, mid); H@, h$$  
else T)c<tIr6  
insertSort(data, l, mid - l + 1); (8"advc6  
if ((r - mid) > THRESHOLD) oRkh>yj'  
mergeSort(data, temp, mid + 1, r); Cb}I-GtO  
else a gk w)#  
insertSort(data, mid + 1, r - mid); j!c~%hP  
6W\G i>  
for (i = l; i <= mid; i++) { J2 ZV\8t  
temp = data; i}Q"'?  
} [&(~{#}M:  
for (j = 1; j <= r - mid; j++) { ^sVr#T  
temp[r - j + 1] = data[j + mid]; gOy;6\/  
} {,+{,Ere  
int a = temp[l]; = Ed0vw  
int b = temp[r]; T W#s)iDi  
for (i = l, j = r, k = l; k <= r; k++) { 0u) m9eg  
if (a < b) { Xb<>AzEM  
data[k] = temp[i++]; {gz-w|7  
a = temp; LvqWA}  
} else { Y_zMj`HE  
data[k] = temp[j--];  CK+t6Gp  
b = temp[j]; H\fsyxM7  
} FUVp}>#U  
} X $2f)3  
} $c {fPFe-  
oGRd ;hsF  
/** E1j3c :2  
* @param data +)hxYLk&I  
* @param l 5pT8 }?7  
* @param i xx@[ecW  
*/ \483S]_-z{  
private void insertSort(int[] data, int start, int len) { !,|-{":  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); H+{@V B  
} ?$K.*])e  
} >PzZt8e  
} ?W>`skQ  
} b:5-0uxjs  
$cW t^B'  
堆排序: Ht:\ z;cu  
jF-:e;-  
package org.rut.util.algorithm.support; ~&aULY?)]  
..kFn!5(g  
import org.rut.util.algorithm.SortUtil; %8H$62w]  
Ld 0*)rI#  
/** RFLfvD<  
* @author treeroot -2[#1S*  
* @since 2006-2-2 ]$u C~b   
* @version 1.0 C :An  
*/ ;X^#$*=Q  
public class HeapSort implements SortUtil.Sort{ 5 JlgnxRq  
kY?tUpM!TB  
/* (non-Javadoc) K {kd:pr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {+m8^-T  
*/ ]>Ym   
public void sort(int[] data) { l$Vy\CfK3n  
MaxHeap h=new MaxHeap(); Z($i+L%.  
h.init(data); H C=ZcK'W  
for(int i=0;i h.remove(); U9\\8  
System.arraycopy(h.queue,1,data,0,data.length); h% KEg667  
} :%z#s  
Gy[anDE&  
private static class MaxHeap{ et/:vLl13  
Ab]tLz|Z  
void init(int[] data){ BT&R:_:  
this.queue=new int[data.length+1]; "F}dZ  
for(int i=0;i queue[++size]=data; u]Q}jqiq"  
fixUp(size); L2p?] :-  
} .'&pw }F  
} Yj'9|4%+|  
^.R!sQ  
private int size=0; tkH]_cH'w  
"P0!cY8r  
private int[] queue; /7])]vZ_  
$#-rOi /  
public int get() { O PzudO  
return queue[1]; _  xym  
} Y6&v&dA;  
eM{u>n+`F0  
public void remove() { <T?-A}0uO  
SortUtil.swap(queue,1,size--); 4b[bj").A  
fixDown(1); (~eS$8>.  
} Q 8Hl7__^  
file://fixdown mZ2CG O R  
private void fixDown(int k) { >O<a9wz  
int j; JRi:MWR<r  
while ((j = k << 1) <= size) { ?)J/uU2w  
if (j < size %26amp;%26amp; queue[j] j++; \c<;!vkZ04  
if (queue[k]>queue[j]) file://不用交换 pHoHngyi&  
break; 1Xo0(*O  
SortUtil.swap(queue,j,k); f*<Vq:N=\  
k = j; u.|%@  
} J/jkb3  
} Y ~g\peG7  
private void fixUp(int k) { W03mdRW  
while (k > 1) { {j9TzR  
int j = k >> 1; pJvPEKN  
if (queue[j]>queue[k]) XrM+DQ;  
break;  t1 YB  
SortUtil.swap(queue,j,k); u{_,S3Aa  
k = j; #lrwKHZ+  
} },j |eA/W  
} P4q5#r  
`X5!s  
} uUg;v/:  
+Ps.HW#NY  
} a51e~mg Z`  
m{Vd3{H40  
SortUtil: aSvv(iV  
b"A,q  
package org.rut.util.algorithm; QZ l#^-on  
UP^8Yhdo  
import org.rut.util.algorithm.support.BubbleSort; j{OA%G(I  
import org.rut.util.algorithm.support.HeapSort; 4?1Qe\A^  
import org.rut.util.algorithm.support.ImprovedMergeSort; #0r~/gW  
import org.rut.util.algorithm.support.ImprovedQuickSort; n!4\w>h  
import org.rut.util.algorithm.support.InsertSort; @KK6JyOTQ  
import org.rut.util.algorithm.support.MergeSort; ,_u7@Ix  
import org.rut.util.algorithm.support.QuickSort; salC4z3  
import org.rut.util.algorithm.support.SelectionSort; ekvs3a^  
import org.rut.util.algorithm.support.ShellSort; v1 8<~  
a*y9@RC}  
/** #+1|O;PB#  
* @author treeroot ?{qUn8f2  
* @since 2006-2-2 gLX<> |)*  
* @version 1.0 7. <jdp  
*/ 9$\s v5  
public class SortUtil { 4j=3'Z|  
public final static int INSERT = 1; Cw+boB_tip  
public final static int BUBBLE = 2; D_d>A+  
public final static int SELECTION = 3; t|iN Sy3  
public final static int SHELL = 4; U`q keNd  
public final static int QUICK = 5; 4C=W~6~  
public final static int IMPROVED_QUICK = 6; ^wolY0p  
public final static int MERGE = 7; Ncz4LKzt  
public final static int IMPROVED_MERGE = 8; zG#5lzIu,  
public final static int HEAP = 9; _li3cXE  
%3a-@!|1<  
public static void sort(int[] data) { mcV<)UA}  
sort(data, IMPROVED_QUICK); f256;3n  
} }_'5Vb_  
private static String[] name={ !:|*!  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" JJd qdX;  
}; X(ph$,[  
"tCTkog3]  
private static Sort[] impl=new Sort[]{ @q'kKVJs  
new InsertSort(), J#..xJ?XRD  
new BubbleSort(), " #iJ/vy  
new SelectionSort(), {nV/_o$$  
new ShellSort(), `3F#k[IR  
new QuickSort(), .rtA sbp.!  
new ImprovedQuickSort(), 8 ??-H0P  
new MergeSort(), XYo,5-  
new ImprovedMergeSort(), '0D$C},^|8  
new HeapSort() `DY yK?R  
}; +X/a+y-  
^!1!l-  
public static String toString(int algorithm){ Ocdy;|&  
return name[algorithm-1]; P4[kW}R  
} |'?vlUCd  
>B{NxL3->  
public static void sort(int[] data, int algorithm) { :oIBJ u%/  
impl[algorithm-1].sort(data); u(f   
} % Ln`c.C  
q}P@}TE  
public static interface Sort { Rml'{S  
public void sort(int[] data); ~*iF`T6  
} %y6Q3@  
N1~bp?$1  
public static void swap(int[] data, int i, int j) { kZw"a*6  
int temp = data; gI^&z  
data = data[j]; NpH8=H9  
data[j] = temp; 6|jZv~rS$  
} |owr?tC  
} h]oUY.Pf  
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