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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。 GV2}K <s  
插入排序: *".7O*jjV  
Fj5^_2MU:  
package org.rut.util.algorithm.support; N2~z&y8.  
Jrffb=+b  
import org.rut.util.algorithm.SortUtil; -p)HH@6a  
/** 8=SNLO  
* @author treeroot >a0;|;hp  
* @since 2006-2-2 HKh)T$IZM  
* @version 1.0 K E^_09  
*/ #?-W.  
public class InsertSort implements SortUtil.Sort{ F^w0TD8  
'shOSB  
/* (non-Javadoc) /R,/hi Kx\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <iMkHch  
*/ 8+!$k!=X  
public void sort(int[] data) { xCQ<G{;C  
int temp; L,l+1`Jz  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &?9.Y,  
} T JVNR_x  
} :2?'mKa7  
} )GR^V=o7,Y  
>!oN+8[~  
} nyDqR#t  
cis ~]x%  
冒泡排序: lE`ScYG  
=B/^c>w2  
package org.rut.util.algorithm.support; s_kI\w4(x1  
xWlB!r<}Gz  
import org.rut.util.algorithm.SortUtil; qD9B[s8  
kg-%:;y.  
/** q|j;dI&  
* @author treeroot 6\]-J*e>  
* @since 2006-2-2 QF^An B  
* @version 1.0 L@+j8[3BX  
*/ 5}By2Tx  
public class BubbleSort implements SortUtil.Sort{ 7kb`o y;(^  
fG.w;Aemv5  
/* (non-Javadoc) ``O\'{o&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HPgMVp'  
*/ ~L1N1Z)Kk  
public void sort(int[] data) { <fyv^e  
int temp; a'A0CQ  
for(int i=0;i for(int j=data.length-1;j>i;j--){ QzS{2Y[OQ  
if(data[j] SortUtil.swap(data,j,j-1); hqE#BnQxP,  
} 6 HEl1FK{@  
} mhs%b4'>  
} ,CvU#ab8$  
} ^oP]@r"qy  
5 )C~L]  
} %tu{`PN<  
11)~!in  
选择排序: w68qyG|wM  
aNwDMd^+  
package org.rut.util.algorithm.support; mki=.l$O  
7>4t{aRf_8  
import org.rut.util.algorithm.SortUtil; !YoKKG~_0  
:3G9YjzC}  
/** f8n'9HOw>  
* @author treeroot C= Zuy^  
* @since 2006-2-2 _}\&;  
* @version 1.0 F )tNA?p)  
*/ U%#=d@?  
public class SelectionSort implements SortUtil.Sort { Pgo5&SQb  
!cq4+0{O;&  
/* :_^YEm+A  
* (non-Javadoc) X31kHK5F_  
* `W/6xm(X5;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?K]k(ZV_+Y  
*/ PK~okz4b  
public void sort(int[] data) { O8lOr(|l  
int temp;  &wj Ob  
for (int i = 0; i < data.length; i++) { |;].~7^  
int lowIndex = i; 71 2i |  
for (int j = data.length - 1; j > i; j--) { FX'W%_f,  
if (data[j] < data[lowIndex]) { [C&c;YNp  
lowIndex = j; :1s1wY3Y  
} J) (pGS@  
} EuAa  
SortUtil.swap(data,i,lowIndex); NfSe(rd  
} 65}:2l2<  
} K[9<a>D`  
0 Hq$h  
} CUtk4;^y#  
Oll\T GXP!  
Shell排序: ;uJVY)7a  
{k)MC)%  
package org.rut.util.algorithm.support; t2E_y6  
zL{KK9Or  
import org.rut.util.algorithm.SortUtil; 9*x9sfCv9  
%AJdtJ@0H  
/** \gzNMI*  
* @author treeroot -8TLnl~[  
* @since 2006-2-2 /RMep8 &  
* @version 1.0 =]"PSY7p  
*/ 59)PJ0E  
public class ShellSort implements SortUtil.Sort{ t EN%mK  
rUuM__;d  
/* (non-Javadoc) vbWX`skU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vu1:8j  
*/ j jwY{jV  
public void sort(int[] data) { 5H5< ft,  
for(int i=data.length/2;i>2;i/=2){ ClEtw   
for(int j=0;j insertSort(data,j,i); P--#5W;^oB  
} 1\3n   
} y<gmp  
insertSort(data,0,1); Q[k}_1sWs$  
} |5W u0T  
+yYz;, \  
/** Vw,dHIe(3  
* @param data } o=g)  
* @param j )D@ NX/}  
* @param i sQ_{zOUPh  
*/ [k.<x'#  
private void insertSort(int[] data, int start, int inc) { Y`_6Ny="  
int temp; |+[ bKqI5  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); wvgX5P>  
} [3\}Ca1  
} NTn-4iJy  
} ^ sz4rk  
cLXMq"?C  
} k muF*0Bjk  
+DU}f;O8v  
快速排序: {? 6]_J  
{% ;tN`{M  
package org.rut.util.algorithm.support; $V@IRBm  
u6D>^qF}@'  
import org.rut.util.algorithm.SortUtil; {5RM)J1  
('>!dXA$  
/** p( z.[  
* @author treeroot "d{ |_Cf  
* @since 2006-2-2 ;8ugI  
* @version 1.0 d#A.A<p*  
*/ uRp-yu[nt%  
public class QuickSort implements SortUtil.Sort{ = i `o+H  
<Nkj)`%5iK  
/* (non-Javadoc) g4U%(3,>D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "zYlddh  
*/ .)Du ;  
public void sort(int[] data) { oo<,hOv   
quickSort(data,0,data.length-1); LB-4/G$  
} /5SBLp}Sy  
private void quickSort(int[] data,int i,int j){ Es)Kw3^a  
int pivotIndex=(i+j)/2; Y68oBUd_E  
file://swap _O)~<Sk-*z  
SortUtil.swap(data,pivotIndex,j); }]/"auk  
V:yia^1  
int k=partition(data,i-1,j,data[j]); 0<fN<iR`  
SortUtil.swap(data,k,j); Z}WMpp^r  
if((k-i)>1) quickSort(data,i,k-1); 6=iz@C7r  
if((j-k)>1) quickSort(data,k+1,j); 1_f(;WOg  
)88z=5.  
} $(G.P!/  
/** #5=Yg5   
* @param data QYDSE  
* @param i U+URj <)  
* @param j y&UcTE2;%(  
* @return K&\xbT  
*/ RlC|xj"l%  
private int partition(int[] data, int l, int r,int pivot) { l7nc8K  
do{ ,d$V-~2,  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 5hg:@i',  
SortUtil.swap(data,l,r); R8sj>.I9j  
} %?^IS&]Z  
while(l SortUtil.swap(data,l,r); 1@egAo)  
return l; P|l62!m<   
} Jt  ^a  
+7.\>Ucq`  
} ^cn%]X#.  
"@#^/m)  
改进后的快速排序: JgEPzHgx  
9rf6,hF  
package org.rut.util.algorithm.support; ]MKW5Kq  
xk7 MMRb  
import org.rut.util.algorithm.SortUtil; p D-k<8|  
;p)RMRMg  
/** )[oegfnn-  
* @author treeroot !{>'jvH  
* @since 2006-2-2 ibAZ=RD  
* @version 1.0 =^\yE"a  
*/ %-1-y]R|  
public class ImprovedQuickSort implements SortUtil.Sort { D=Jj!;  
G)t_;iNL|  
private static int MAX_STACK_SIZE=4096; UuPXo66F ]  
private static int THRESHOLD=10; 6Cfu19Dx  
/* (non-Javadoc) C9OEB6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^hiIMqY_{`  
*/ j*Uz.q?  
public void sort(int[] data) { 3dheT}XV?p  
int[] stack=new int[MAX_STACK_SIZE]; Vq-W|<7C=  
79`OB##  
int top=-1; 4} .PQ{  
int pivot; kD;1+lNz  
int pivotIndex,l,r; Fj;];1nt  
IyK^` y  
stack[++top]=0;  S1$lNB  
stack[++top]=data.length-1; MD|T4PPz,}  
SbLm  
while(top>0){ X\4d|VJ?m  
int j=stack[top--]; v'RpsCov  
int i=stack[top--]; b'r</ncZ  
Cfs2tN  
pivotIndex=(i+j)/2; W>#[a %R  
pivot=data[pivotIndex]; >^:*x_a9  
p>oC.[:4a  
SortUtil.swap(data,pivotIndex,j); {=I:K|&  
f4 k  
file://partition :Oiz|b(  
l=i-1; 0Wkk$0h9  
r=j; tq$L* ++O  
do{ JkShtLEr  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); +P! ibHfP  
SortUtil.swap(data,l,r); ~ECIL7,  
} =Gv*yR*]t  
while(l SortUtil.swap(data,l,r); *c<6 Er>s  
SortUtil.swap(data,l,j); d4~;!#<  
r=Tz++!  
if((l-i)>THRESHOLD){ 0 i'bo*  
stack[++top]=i; @vZeye  
stack[++top]=l-1; q\pI&B  
} 6b2Z}B  
if((j-l)>THRESHOLD){ |`|#-xu  
stack[++top]=l+1; YjCHKI"e  
stack[++top]=j; q@Aw]Kh  
} 6,;dU-A+  
VQ"Z3L3-4  
} !n7'TM '  
file://new InsertSort().sort(data); ?kIyo  
insertSort(data); "hmLe(jo}  
} '@/1e\-y  
/** -1{f(/  
* @param data ;A6%YY  
*/ ,xw1B-dx  
private void insertSort(int[] data) { Tbp;xv_qo  
int temp; f@@7?5fW  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); l"zA~W/  
} ;~-ZN?8   
} G{.[o6>  
} Ct][B{  
jj&mRF0gCb  
} 2U|"]tpM&  
3q W](  
归并排序: B[ .$<$}G  
nR]*RIp5  
package org.rut.util.algorithm.support; v<@3&bot  
F;bkV}^  
import org.rut.util.algorithm.SortUtil; J@o_-\@  
7{Lp/z%r  
/** o:'@|(&<  
* @author treeroot EQWRfx?d  
* @since 2006-2-2 7qSnP 30}  
* @version 1.0 ;E_Go&Vd  
*/ g`z;:ao  
public class MergeSort implements SortUtil.Sort{ 2qdc$I&$  
sYhHh$mwA  
/* (non-Javadoc) *sQ.y {  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GrUpATIx  
*/ P{L S +.  
public void sort(int[] data) { Y\Z6u)  
int[] temp=new int[data.length]; `_k_}9Fr  
mergeSort(data,temp,0,data.length-1); hg %iv%1B'  
} 8J#xB  
@HzK)%@  
private void mergeSort(int[] data,int[] temp,int l,int r){ j8oX9 Yo0=  
int mid=(l+r)/2; ;Fo7 -kK  
if(l==r) return ; Yy~xNj5OS  
mergeSort(data,temp,l,mid); #Iu "qu  
mergeSort(data,temp,mid+1,r); S{RRlR6Z  
for(int i=l;i<=r;i++){ ,.kmUd  
temp=data; QOX'ZAB`  
} <&^[?FdAa  
int i1=l; Im?/#tX  
int i2=mid+1; k8\ KCKql  
for(int cur=l;cur<=r;cur++){ PR/>E60H  
if(i1==mid+1) '>ASr]Q  
data[cur]=temp[i2++]; /d+v4GIB  
else if(i2>r) |}2/:f#Iz*  
data[cur]=temp[i1++]; kbL7Xjk  
else if(temp[i1] data[cur]=temp[i1++]; deQ {  
else b# Dd  
data[cur]=temp[i2++]; pIV |hb!G  
} <FX ]n<  
} rK3KxG  
.sc80i4  
} ^W(ue]j}o  
[,MaAB  
改进后的归并排序: YZ]}l%e  
g&S> Wq%L  
package org.rut.util.algorithm.support; LGw-cX #  
H<}|n1w<  
import org.rut.util.algorithm.SortUtil; )Tieef*Q~  
k.7!)jL7  
/** VDro(?p8Z  
* @author treeroot *<:6A&'D9  
* @since 2006-2-2 /0cm7[a?  
* @version 1.0 <)pPq+  
*/ ^rs{1S  
public class ImprovedMergeSort implements SortUtil.Sort { |)v}\-\ #  
mU(v9Jpf7  
private static final int THRESHOLD = 10; rizjH+  
]#[4eaCg  
/* |)xWQ KzA  
* (non-Javadoc) E2 FnC}#W  
* o~9sO=-O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7IFZK\V  
*/ wpp!H<')  
public void sort(int[] data) { Y}xM&%  
int[] temp=new int[data.length]; 7NT0]j(w-  
mergeSort(data,temp,0,data.length-1); \[qxOZ{  
} {\`y)k 7  
e$teh` p3  
private void mergeSort(int[] data, int[] temp, int l, int r) { DE7y\oO]  
int i, j, k; AOkG.u-k  
int mid = (l + r) / 2; TV0sxod6  
if (l == r) T{2)d]Y  
return; !Pz#czo  
if ((mid - l) >= THRESHOLD) FGPqF;  
mergeSort(data, temp, l, mid); #6 ni~d&0  
else $IS!GS&:  
insertSort(data, l, mid - l + 1); C~ A`h=A<  
if ((r - mid) > THRESHOLD)  }D+ b`,  
mergeSort(data, temp, mid + 1, r); s?s ,wdp  
else $9j>oUG  
insertSort(data, mid + 1, r - mid); |Xm$O1Wa  
S,C c0)j>  
for (i = l; i <= mid; i++) { ,}khu  
temp = data;  3Z`"k2k  
} -T;^T1  
for (j = 1; j <= r - mid; j++) { #?+[|RS|  
temp[r - j + 1] = data[j + mid]; FZ}^)u}o  
} K2e68GU  
int a = temp[l]; 4DDBf j  
int b = temp[r]; E|>-7k")  
for (i = l, j = r, k = l; k <= r; k++) {   NV-l9  
if (a < b) { WO{7/h</  
data[k] = temp[i++]; pouXt-%2X  
a = temp; q.<)0nk  
} else { /P-#y@I  
data[k] = temp[j--]; 9D &vxKE  
b = temp[j]; *5 9|  
} r7].48D  
} cl1ygpf(  
} vE8BB$D  
oH&@F@r:+  
/** eub}+~_?[  
* @param data [mQ1r*[j  
* @param l si)>:e  
* @param i Nd"IW${Kg  
*/ *!TQC6b$  
private void insertSort(int[] data, int start, int len) { @%*2\8}C!  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); !s^XWsb8  
} z. X hE \  
} M9o/6  
} fzw:[z:%  
} X`EVjK  
bM5V=b_H  
堆排序: k0N>J8y  
po'b((q  
package org.rut.util.algorithm.support; ?%su?L  
xo?'L&%  
import org.rut.util.algorithm.SortUtil; V=5S=7 Z:  
cr<j<#(Z}  
/** Y3~z#<  
* @author treeroot uYWgNNxdmo  
* @since 2006-2-2 }y+Qj6dP  
* @version 1.0 ZA. S X|m  
*/ 1ig*Xp[  
public class HeapSort implements SortUtil.Sort{  oJ*,a  
` L 1+j  
/* (non-Javadoc) N8df1>mW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R&6@*Nn  
*/ $M4Z_zle)  
public void sort(int[] data) { ybsw{[X>M  
MaxHeap h=new MaxHeap(); %7 yQ0'P  
h.init(data); ,u^{zYoW  
for(int i=0;i h.remove(); rv(N0p/  
System.arraycopy(h.queue,1,data,0,data.length); aem gGw<  
} R`DzVBLl  
kr~n5WiAZ  
private static class MaxHeap{ boCi*]  
R4VX*qkB  
void init(int[] data){ 5@r6'Z  
this.queue=new int[data.length+1]; u-y?i`  
for(int i=0;i queue[++size]=data; ,SNrcwv  
fixUp(size); Ipq0 1 +  
} )`{m |\b  
} xM!9$v  
!4D?X\~"%  
private int size=0; %XeN_ V  
.)+c01  
private int[] queue; {4A,&pR  
gED|2%BXb  
public int get() { G/FDD{y  
return queue[1]; uq-`1m }  
} CJCxL\  
WkE="E}  
public void remove() { Li|~%E1  
SortUtil.swap(queue,1,size--); Zzg zeT+bv  
fixDown(1); {DKZ ~  
} )-1e} VF(U  
file://fixdown YLTg(*  
private void fixDown(int k) { T%& vq6  
int j; zj] g^c;  
while ((j = k << 1) <= size) { f OR9N/  
if (j < size %26amp;%26amp; queue[j] j++; u&c%L0)E&  
if (queue[k]>queue[j]) file://不用交换 jQ'g'c!  
break; T(Q ~b  
SortUtil.swap(queue,j,k); dmXfz D  
k = j; wT- <#+L\  
} =H23eOS_#  
} J ;z`bk^  
private void fixUp(int k) { l3ogMRq@  
while (k > 1) { Kw;gQk~R!  
int j = k >> 1; u6?9#L(  
if (queue[j]>queue[k]) *S.FM.r  
break; 8@LWg d  
SortUtil.swap(queue,j,k); x:~XZX\mwH  
k = j; Rvu5#_P  
} %Rf9 KQ  
} =^rp= Az  
$V`1<>4  
} csLbzDg  
1Dc6v57  
} KMkD6g  
RD)Vb$.B:  
SortUtil: u0arJU_.)  
CUG"2K9  
package org.rut.util.algorithm; /bo=,%wJ[  
b\H&E{Gn|x  
import org.rut.util.algorithm.support.BubbleSort; 0AffD:  
import org.rut.util.algorithm.support.HeapSort; "5k 6FV  
import org.rut.util.algorithm.support.ImprovedMergeSort; G%l')e)9Gq  
import org.rut.util.algorithm.support.ImprovedQuickSort; v!ai_d^  
import org.rut.util.algorithm.support.InsertSort; fU ;H  
import org.rut.util.algorithm.support.MergeSort; c CDT27 @  
import org.rut.util.algorithm.support.QuickSort; |5dNJF8;Q  
import org.rut.util.algorithm.support.SelectionSort; 6Y\TVRR  
import org.rut.util.algorithm.support.ShellSort; @{fwM;me]P  
oz.z>+Q  
/** bcy  
* @author treeroot v'?o#_La+  
* @since 2006-2-2 U7jDm>I  
* @version 1.0 o[ks-C>jw  
*/ k*6"!J%A  
public class SortUtil { v@GhwL  
public final static int INSERT = 1; -(WRhBpw  
public final static int BUBBLE = 2; 'v0rnIsI?  
public final static int SELECTION = 3; }PBL  
public final static int SHELL = 4; $'5rS$]a/  
public final static int QUICK = 5; ;a@riPqx!  
public final static int IMPROVED_QUICK = 6; >lqo73gM9  
public final static int MERGE = 7; RV{%@1Pu  
public final static int IMPROVED_MERGE = 8; c-(dm:  
public final static int HEAP = 9; H<fi,"X^  
# }}6JM  
public static void sort(int[] data) { r^msJ|k8[  
sort(data, IMPROVED_QUICK); H c>yZ:c;  
} @|t]9  
private static String[] name={ w0j'>4  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Ag+B*   
}; UcB&p t&  
"\}h  
private static Sort[] impl=new Sort[]{ CEw%_U@8  
new InsertSort(), .),9q z`  
new BubbleSort(), #prYZcHv:_  
new SelectionSort(), .5s58H cg,  
new ShellSort(), D]"W|.6@  
new QuickSort(), Da8gOZ  
new ImprovedQuickSort(), Xp06sl7 M  
new MergeSort(), ic!% }S?  
new ImprovedMergeSort(), 4[kyzz x  
new HeapSort() N;-%:nC  
}; o^(I+<el  
uK(]@H7~!c  
public static String toString(int algorithm){ n CX{tqy   
return name[algorithm-1]; eXnSH$uI  
} $,/E"G`  
wy:Gy9\  
public static void sort(int[] data, int algorithm) { '-N 5F  
impl[algorithm-1].sort(data); H?Sv6W.~  
} <>f;g "qS  
O:rf DO  
public static interface Sort { {j`8XWLZZN  
public void sort(int[] data); L;M@]  
} s1::\&`za  
)i:*r8*~  
public static void swap(int[] data, int i, int j) { O#[bNLV  
int temp = data; | Z7 j s"  
data = data[j]; :5j+^/   
data[j] = temp; ZQKo ]Kdr  
} JM/\n 4ea:  
} &0bq3JGW  
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