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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。 r Ww.(l  
插入排序: [N*`3UZk"  
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package org.rut.util.algorithm.support; 4yRX{Bl|  
@XX7ydG5  
import org.rut.util.algorithm.SortUtil; d>1#|  
/** 7e<\11uI]a  
* @author treeroot v7D3aWoe  
* @since 2006-2-2 2v1dSdX,W  
* @version 1.0 6Nz S<  
*/ #4?:4Im#  
public class InsertSort implements SortUtil.Sort{ &}lRij&`  
N'0fB`:kz  
/* (non-Javadoc) _." X# }W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V4x6,*)e  
*/ *|/kKvN  
public void sort(int[] data) { _zFJ]7Ym.)  
int temp; OMN|ea.O  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5~SBZYI  
} %967#XI[y  
} 1s#GY<<  
} aW$))J)0  
)mRKIM}*W  
} A-qpuI;f  
Fk&A2C}$b  
冒泡排序: hUMFfc ?  
[$%0[;jtS  
package org.rut.util.algorithm.support; DBzF\-  
ZZF\;  
import org.rut.util.algorithm.SortUtil; 0Ewt >~n  
;i;;{j@$i  
/** |#(g 8ua7  
* @author treeroot L~L]MC&  
* @since 2006-2-2 y O?52YO  
* @version 1.0 Zq"wq[GCN  
*/ bR|1* <  
public class BubbleSort implements SortUtil.Sort{ +8V |  
kX]p;C  
/* (non-Javadoc) m?D k(DJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Xw9"wAj  
*/ @NJJ  
public void sort(int[] data) { !fG`xZ~  
int temp; V@1K  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ogKd}qTov  
if(data[j] SortUtil.swap(data,j,j-1); WevXQ-eKm  
} KXga {]G:  
} =?- s azF&  
} ?VT ]bxb  
} Jl^THoEL  
d`4@aoM  
} rwep e5  
G@Vz }B:=  
选择排序: ( 0Z3Ksfj1  
l j*J|%~  
package org.rut.util.algorithm.support; O(f&0h !  
h}(GOY S)  
import org.rut.util.algorithm.SortUtil; t%>x}b"2T  
{:d9q  
/** o[CjRQY]P  
* @author treeroot 4xNzhnp|  
* @since 2006-2-2 O\qY? )  
* @version 1.0 <\5Y~!)  
*/ vH9Gf  
public class SelectionSort implements SortUtil.Sort { t>>\U X  
+S>}<OE  
/* Yo#F;s7  
* (non-Javadoc) 0_5j(   
* }X*.Vv A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )VCRbz"[g  
*/ /2PsC*y  
public void sort(int[] data) { * ;C8g{  
int temp; qfzT8-Y  
for (int i = 0; i < data.length; i++) { db.E-@W.OI  
int lowIndex = i; N?;5%pG <  
for (int j = data.length - 1; j > i; j--) { B[Fuyy?  
if (data[j] < data[lowIndex]) { eFeWjB'<7  
lowIndex = j; O1K~]Nt  
} #>byP?)n  
} {^n\ r^5  
SortUtil.swap(data,i,lowIndex); E$8 4c+  
} /!Kl  
} 7Y(ySW  
ew cgg  
} PNMf5'@m  
x2g P, p-  
Shell排序: a0ze7F<(  
~_Mz05J-\_  
package org.rut.util.algorithm.support; :-kXZe  
IW'2+EGc  
import org.rut.util.algorithm.SortUtil; juuV3et  
iy_\1jB0  
/** \3@AC7  
* @author treeroot r'ydjy  
* @since 2006-2-2 5=.EngG  
* @version 1.0 8QGj:3  
*/ |.Pl[y  
public class ShellSort implements SortUtil.Sort{ 'qg q8  
+t XOP|X  
/* (non-Javadoc) !zNMU$p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C=/nZGG  
*/ #dgWXO  
public void sort(int[] data) { D%Y{(l+X  
for(int i=data.length/2;i>2;i/=2){ z3[0BWXs  
for(int j=0;j insertSort(data,j,i); -f-2!1&<3h  
} :J}@*>c  
} qm)KO 4  
insertSort(data,0,1); 5CsJghTw  
} J12 ZdC'O  
#}A >B  
/** ep<2u x  
* @param data o[!g,Gmoh  
* @param j 4;ig5'U,  
* @param i zSi SZMP"  
*/ =Jx,.|Bf  
private void insertSort(int[] data, int start, int inc) { E*Q><UU  
int temp; zoV-@<Eh  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); jF\J+:5M  
} I!;#Nk>  
} ,e ~@  
} [T.BK:  
.baS mfc  
} ,SAS\!hsE  
q_N8JQg  
快速排序: -vfV;+3  
{-]/r  
package org.rut.util.algorithm.support; 9R"bo*RIS  
ya'@AJS  
import org.rut.util.algorithm.SortUtil; /N ^%=G#  
?eb2T`\0Q  
/** a]465FY  
* @author treeroot [N/[7Q/y  
* @since 2006-2-2 u= K?K  
* @version 1.0 snBC +`-  
*/ n8M/Y}mH   
public class QuickSort implements SortUtil.Sort{ M,Px.@tw.  
8P3EQY -  
/* (non-Javadoc) d*lnXzQor  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <oS k!6*  
*/ oWpy ^=D_  
public void sort(int[] data) { S`"M;%T  
quickSort(data,0,data.length-1); 8fdK|l w  
} F~ n}Ep~1  
private void quickSort(int[] data,int i,int j){ }q(IKH\&  
int pivotIndex=(i+j)/2; iw(\]tMt  
file://swap :!1B6Mc  
SortUtil.swap(data,pivotIndex,j); yVxR||e  
]*^mT&$7  
int k=partition(data,i-1,j,data[j]); NdQXQa?,  
SortUtil.swap(data,k,j); H3.WAg[`  
if((k-i)>1) quickSort(data,i,k-1); [JGa3e  
if((j-k)>1) quickSort(data,k+1,j); 'C~NQ{1TV  
(0qdU;  
} 0n_Cuh\  
/** O4&/g-  
* @param data (o\:rLZu  
* @param i '7W?VipU  
* @param j m4n J9<-  
* @return IrXC/?^h  
*/ n\ma5"n0=\  
private int partition(int[] data, int l, int r,int pivot) { F,e_`  
do{ I/GZ  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); %f@VOSs  
SortUtil.swap(data,l,r); C/[2?[  
} Z$,1Tk"O/s  
while(l SortUtil.swap(data,l,r); doxQS ohS  
return l; "$#x+|PyC  
} r&\}E+  
odquAqn  
} (G"b)"Qum  
5jg^12EP  
改进后的快速排序: EPr{1Z  
U$pHfNTH  
package org.rut.util.algorithm.support; j*$GP'Df3  
{P(Z{9u%  
import org.rut.util.algorithm.SortUtil; oa`,|dA"  
/+J?Ep(_  
/** -Tk~c1I#`  
* @author treeroot ha'oLm#  
* @since 2006-2-2 6[c LbT0  
* @version 1.0 $+ZO{ (  
*/ ,KIa+&vJW@  
public class ImprovedQuickSort implements SortUtil.Sort { 0ldde&!p  
g?i_10Xlp  
private static int MAX_STACK_SIZE=4096; m7e$ Z  
private static int THRESHOLD=10; d<qbUk3;  
/* (non-Javadoc) &^4W+I{H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /,= wP)  
*/ U;6~]0^K  
public void sort(int[] data) { tGd9Cs9D<  
int[] stack=new int[MAX_STACK_SIZE]; }x-~>$:"  
7 s5?^^  
int top=-1; cCU'~  
int pivot; OR( )D~:n  
int pivotIndex,l,r; "^<:7_Y  
lV$U!v: b  
stack[++top]=0; (XRj##G{  
stack[++top]=data.length-1; T |'Ur #  
Tc\^=e^N?  
while(top>0){ #joU}Rj|  
int j=stack[top--]; u3 ?+Hu|*T  
int i=stack[top--]; A@_F ;4X  
"`,PLC  
pivotIndex=(i+j)/2; S,3e|-&$  
pivot=data[pivotIndex]; J(M0t~RZ  
ez86+  
SortUtil.swap(data,pivotIndex,j); f8N  
xvjHGgWSxc  
file://partition +B_q? 6pR  
l=i-1; QD<^VY6  
r=j; !V@Y \M d  
do{ v<tH 3I+   
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Iu(T@",Q#  
SortUtil.swap(data,l,r); N!"GwH  
} >H5BY9]I  
while(l SortUtil.swap(data,l,r); v>)[NAY9  
SortUtil.swap(data,l,j); +tkd($//  
',6QL4qV/  
if((l-i)>THRESHOLD){ M5exo   
stack[++top]=i; 2v`VtV|B  
stack[++top]=l-1; *xU^e`P  
}  mbd  
if((j-l)>THRESHOLD){ v2EM| Q xp  
stack[++top]=l+1; w>H!H6Q  
stack[++top]=j; \ fU{$  
} lbT<HWzNH  
%MbjKw  
} ,$vc*}yI0  
file://new InsertSort().sort(data); 4VaUa8 D  
insertSort(data); x;Dr40wD@y  
} k%:]PQjYT  
/** #&r^~>,#L-  
* @param data Q-O:L  
*/ A~I}[O~(pb  
private void insertSort(int[] data) { %r6~5_A  
int temp; ]v94U b   
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); WU#bA|Cf  
} ( rZq0*  
} w6R=r n  
} +#1WOQfAD  
$./JA) `  
} SP HeI@i  
~LO MwMHl  
归并排序: 3'u%[bx E  
 T_jwj N  
package org.rut.util.algorithm.support; !pw%l4]/t  
"@GopD  
import org.rut.util.algorithm.SortUtil; yW|yZ(7  
z O$SL8U  
/** cdzzS?$)  
* @author treeroot v]U[7 j  
* @since 2006-2-2 YZpF*E;6t  
* @version 1.0 "H%TOk7l  
*/ CL9p/PJ%e  
public class MergeSort implements SortUtil.Sort{ fn#b3ee  
dWD9YIYf  
/* (non-Javadoc) wOHK dQ'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Iy|]U&`  
*/ EW#.)@-  
public void sort(int[] data) { xC<OFpI\  
int[] temp=new int[data.length]; NO`a2HR$  
mergeSort(data,temp,0,data.length-1); ]wa?~;1^&  
} 8-juzL}  
=kZPd>&L  
private void mergeSort(int[] data,int[] temp,int l,int r){ ?h K+h.{  
int mid=(l+r)/2; \^N9Q9{7]  
if(l==r) return ; 6=A ++H @  
mergeSort(data,temp,l,mid); j*W]^uT,  
mergeSort(data,temp,mid+1,r); 5>}L3r>a;  
for(int i=l;i<=r;i++){ {U^mL6=&v  
temp=data; oc\rQ?  
} RFg$N@g,  
int i1=l; 4y 582u6^  
int i2=mid+1; dHf_&X2A  
for(int cur=l;cur<=r;cur++){ rS(693kb  
if(i1==mid+1) nF A7@hsm  
data[cur]=temp[i2++]; \e'>$8%T  
else if(i2>r) SAThY$)6  
data[cur]=temp[i1++]; f} } Bb8  
else if(temp[i1] data[cur]=temp[i1++]; "St,4 b  
else _QY0j%W  
data[cur]=temp[i2++]; 8"8sI  
} n8zUL1:R  
} ~+3f8%   
 `9S<E  
} x3wyIio*  
I+`~6  
改进后的归并排序: Cd|V<BB9  
6sQ"go$}  
package org.rut.util.algorithm.support; QnaMjDh$6  
w4(DR?[nC  
import org.rut.util.algorithm.SortUtil; w`>xK sKW>  
d<7xSRC   
/** )_xM)mH  
* @author treeroot qZ_^#%zO  
* @since 2006-2-2 uO7Ti]H  
* @version 1.0 \vFkhm  
*/ H[]j6D  
public class ImprovedMergeSort implements SortUtil.Sort { ]C)PZZI='  
En5I  
private static final int THRESHOLD = 10; bB)EJCPq>  
xOTm-Cm9L  
/* ih ,8'D4  
* (non-Javadoc) : ]CZS  
* Xg,E;LSF8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /Pg66H#RUf  
*/ 2{+\\.4Evk  
public void sort(int[] data) { J&8l1{gd  
int[] temp=new int[data.length]; zq{L:.#ha  
mergeSort(data,temp,0,data.length-1); ,"j |0Q  
} .O1g'%  
:Q?xNY%  
private void mergeSort(int[] data, int[] temp, int l, int r) { )vuxy  
int i, j, k; fKrOz! b  
int mid = (l + r) / 2; jew?cnRmd  
if (l == r) 5"XcVH4g  
return; oh& P Q{  
if ((mid - l) >= THRESHOLD) {T:2+iS9:  
mergeSort(data, temp, l, mid); ]lZ!en  
else ?1OS%RBF  
insertSort(data, l, mid - l + 1); InPq1AH  
if ((r - mid) > THRESHOLD) ;"joebZ/  
mergeSort(data, temp, mid + 1, r); E@ t~juF!  
else ,6a'x~y<r  
insertSort(data, mid + 1, r - mid); <bGSr23*  
~(I\O?k>H  
for (i = l; i <= mid; i++) { zpg*hlv  
temp = data; WNd(X}  
} RMLs(?e  
for (j = 1; j <= r - mid; j++) { DJrA@hm/Y  
temp[r - j + 1] = data[j + mid]; s'} oVx]  
} gtCd#t'(V  
int a = temp[l]; mKxQ U0`  
int b = temp[r]; 17<\Q(YQ=  
for (i = l, j = r, k = l; k <= r; k++) { }4eSB  
if (a < b) { +sgishqn9  
data[k] = temp[i++]; gR~XkU  
a = temp; xQaN\):^8  
} else { @xO< ~  
data[k] = temp[j--]; uiDR}   
b = temp[j]; 47 m:z5;  
} Dyt}"r\  
} (MNbABZQ  
} v>7=T 8  
||qsoF5B]  
/** sEhdkN}6  
* @param data A5?[j QT0  
* @param l nW{7L  
* @param i -] J V  
*/ 3( AgUq  
private void insertSort(int[] data, int start, int len) { AbLOq@lrK  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ;znIY&Z  
} tM{t'WU  
} --  _,;  
} ZHw)N&Qn  
} _Y}(v( (;  
e[R364K  
堆排序: #XC\= pZX  
oqUtW3y  
package org.rut.util.algorithm.support; g<}K^)x  
uWi+F)GS^K  
import org.rut.util.algorithm.SortUtil; :[\}Hn=  
7CM<"pV  
/** Q> @0'y=s  
* @author treeroot a{Tv#P*!  
* @since 2006-2-2 1_GUi  
* @version 1.0 MlS<txFPS  
*/ (y#8z6\dx  
public class HeapSort implements SortUtil.Sort{ uF@Q8 7G  
8~rD#8`6j  
/* (non-Javadoc) {!'AR`|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _j <46^  
*/ #Du1(R  
public void sort(int[] data) { 7c4\'dt#  
MaxHeap h=new MaxHeap(); z#bO FVg#  
h.init(data); hof ZpM  
for(int i=0;i h.remove(); 9:YiLoz?  
System.arraycopy(h.queue,1,data,0,data.length); d t0?4 d  
} KQQR"[z&V  
1 ljgq]($  
private static class MaxHeap{ HtmJIH:  
oACuI|b  
void init(int[] data){ JBi<TDm/  
this.queue=new int[data.length+1]; ,$W7Q  
for(int i=0;i queue[++size]=data; )Hl;9  
fixUp(size);  SvDVxK  
} GG%j+Ed  
} H%Q@DW8~@  
#N@sJyI N  
private int size=0; VJZ   
EvQN(_  
private int[] queue; (ioi !p  
~i6tc d  
public int get() { 3H@TvV/;f  
return queue[1]; ,j9}VnW)  
} R;'Pe>  
UiaY0 .D  
public void remove() { 6D3fkvc Z  
SortUtil.swap(queue,1,size--); TQ>kmHWf/  
fixDown(1); f}  eZX  
} Lgvmk  
file://fixdown Zp l?zI  
private void fixDown(int k) { N;<<-`i  
int j; T4o}5sq}S  
while ((j = k << 1) <= size) { eP[azC"G[  
if (j < size %26amp;%26amp; queue[j] j++; rK}*Uwut  
if (queue[k]>queue[j]) file://不用交换 q.uIZ  
break; q;t T*B W  
SortUtil.swap(queue,j,k); \W}?4kz  
k = j; m cp}F|ws  
} aq,&W q@  
} <iJ->$  
private void fixUp(int k) { )#IiHBF  
while (k > 1) { xREqcH,vU  
int j = k >> 1; @6}c\z@AxM  
if (queue[j]>queue[k]) { S4?L8  
break; r?[PIf  
SortUtil.swap(queue,j,k); '1^\^)&q  
k = j; U#d&#",s  
} t<~riFs]  
} ~U ?cL-`n  
'zi5ihiT  
} &tHT6,Xv(  
"2N3L8?k  
} VO#]IXaP  
K=+w,H# `C  
SortUtil: C&Ow*~  
li%=<?%T  
package org.rut.util.algorithm; ^e<0-uM" s  
WLv( K_3Y  
import org.rut.util.algorithm.support.BubbleSort; %+Mi~k*A'  
import org.rut.util.algorithm.support.HeapSort; `3/,-  
import org.rut.util.algorithm.support.ImprovedMergeSort; $zyY"yWRZ  
import org.rut.util.algorithm.support.ImprovedQuickSort; W&TPrB  
import org.rut.util.algorithm.support.InsertSort; rsOon2|  
import org.rut.util.algorithm.support.MergeSort; s|%mGt &L  
import org.rut.util.algorithm.support.QuickSort; b3<<4Vf  
import org.rut.util.algorithm.support.SelectionSort; g9'50<|J  
import org.rut.util.algorithm.support.ShellSort; K?(ls$  
E;| q  
/** [$OD+@~A2  
* @author treeroot 2 ,E&}a|;b  
* @since 2006-2-2 Pm%ZzU  
* @version 1.0 <P(d%XEl  
*/ QYyF6ht=!  
public class SortUtil { 6wIv7@Y  
public final static int INSERT = 1; kHm1aE<  
public final static int BUBBLE = 2; dkLc"$( O  
public final static int SELECTION = 3; *N[.']#n  
public final static int SHELL = 4; O&E1(M|*>  
public final static int QUICK = 5; FFK79e/5  
public final static int IMPROVED_QUICK = 6; o5i?|HJ  
public final static int MERGE = 7; r-H~MisL  
public final static int IMPROVED_MERGE = 8; E6y/,s^~S_  
public final static int HEAP = 9; gB71~A{J  
Y}(v[QGV  
public static void sort(int[] data) { 6V*@ {  
sort(data, IMPROVED_QUICK); 4US8B=jk  
} V0c*M>V  
private static String[] name={ k2,n:7  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" V.: a6>]  
}; = 14'R4:  
]J5[ZVz  
private static Sort[] impl=new Sort[]{ it D%sKo  
new InsertSort(), `i,ZwnLh{  
new BubbleSort(), %4imlP  
new SelectionSort(),  ORp6  
new ShellSort(), ZgZ}^x  
new QuickSort(), ]cLpLA"  
new ImprovedQuickSort(), Tf21K9+`L  
new MergeSort(), )p(5$AR7  
new ImprovedMergeSort(), zPH1{|H+l  
new HeapSort() uy~5!i&  
}; * 8kg6v%  
4~ZQsw `  
public static String toString(int algorithm){ #W~5M ?+  
return name[algorithm-1]; /n/U)!tp  
} JrOp-ug  
f(|qE(  
public static void sort(int[] data, int algorithm) { 0{gvd"q  
impl[algorithm-1].sort(data); v>~ottQ|  
} lk2F]@_kJH  
tA3]6SIK@  
public static interface Sort { 0$":W  
public void sort(int[] data); ](x4q  
} (GMKIw2  
9'Pyo`hJ#U  
public static void swap(int[] data, int i, int j) { n<"?+bz"<  
int temp = data; J=Ak+  J  
data = data[j]; B.'@~$  
data[j] = temp; 43A6B  
} .hSacd  
} z%`Tf&UL  
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