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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。 `9-Zg??8r  
插入排序: b~gF,^w  
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package org.rut.util.algorithm.support; W}RR_Gu  
3fPv71NVtt  
import org.rut.util.algorithm.SortUtil; [7V]=] p  
/** brWt  
* @author treeroot E`|qFG<  
* @since 2006-2-2 l&B'.6XKs  
* @version 1.0 ;j=1 oW  
*/ @Xmk Im  
public class InsertSort implements SortUtil.Sort{ H JiP:{  
ks D1NB;9  
/* (non-Javadoc) BE~[%6T7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $w\, ."y  
*/ LnGSYrx1  
public void sort(int[] data) { 5MJ'/Fy(  
int temp; 3:Wr)>l}#  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =&b[V"  
} j`B{w   
} c29Z1Zs2)  
} /3]|B%W9  
Ysu/7o4  
} Oe`t!&v  
+bW|Q>u  
冒泡排序: 3;:V1_JA  
S)yV51^B  
package org.rut.util.algorithm.support; Qs:r@"hE  
}c%y0)fL  
import org.rut.util.algorithm.SortUtil; W<"\hQI  
*\",  qMp  
/** \<**SSN  
* @author treeroot |U $-d^ZJ  
* @since 2006-2-2 G>QTPXcD  
* @version 1.0 B:cOcd?p  
*/ UI C? S  
public class BubbleSort implements SortUtil.Sort{ uszSFe]E  
+;;%Atgn  
/* (non-Javadoc) IviQ)h p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2]=I'U<E!  
*/ )7g_v*  
public void sort(int[] data) { =fK'Ep[  
int temp; 4tJ4X' U  
for(int i=0;i for(int j=data.length-1;j>i;j--){ [dlH t;S  
if(data[j] SortUtil.swap(data,j,j-1); <|3v@  
} 3ohcHQ/a  
} Ws)X5C=A  
} W+e*(W|d6  
} P1stL,  
: "te-  
} [[h)4H{T  
)OC[;>F7  
选择排序: v qMk)htIz  
4!vUksM  
package org.rut.util.algorithm.support; #l#[\6  
6xh#;+e }  
import org.rut.util.algorithm.SortUtil; ok%!o+nk.  
1Z8Oh_D C  
/** OB^?cA>  
* @author treeroot GD{fXhgk  
* @since 2006-2-2 E :=KH\2f  
* @version 1.0 zB" `i  
*/ ,9wenr  
public class SelectionSort implements SortUtil.Sort { h!av)nhM  
IC.<)I  
/* wn|@D<  
* (non-Javadoc) :;q_f+U  
* IPi<sE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kah3Uhr~  
*/ "4uUI_E9F;  
public void sort(int[] data) { U4l*;od  
int temp; }"B? 8T@_~  
for (int i = 0; i < data.length; i++) { 2$zq (  
int lowIndex = i; f\_!N "HW  
for (int j = data.length - 1; j > i; j--) { 0k 0c   
if (data[j] < data[lowIndex]) { ?En| _E_C  
lowIndex = j; pkfOM"5'  
} 1 lCikS^c  
} )  v5n "W  
SortUtil.swap(data,i,lowIndex); 0$ 9;p zr  
} m2q;^o:J  
} *r,&@UB  
6Y_O^f  
} roj04|  
,x"yZ  
Shell排序: >l< ~Z;  
}42qMOi#w1  
package org.rut.util.algorithm.support; |5B,cB_  
q\'P1~  
import org.rut.util.algorithm.SortUtil; @W\4UX3dK  
&#PBww  
/** Ms'TC; &PS  
* @author treeroot P[I*%  
* @since 2006-2-2 Z++Z@J"  
* @version 1.0 @S"pJeP/f  
*/ acYoOW1G  
public class ShellSort implements SortUtil.Sort{ pG F5aF7T  
w^rb|mKo  
/* (non-Javadoc) M`+e'vdw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RTgA[O4J  
*/ J={OOj  
public void sort(int[] data) { OT}Yr9h4  
for(int i=data.length/2;i>2;i/=2){  @6YBK+"  
for(int j=0;j insertSort(data,j,i); nl-t<#z[  
} ;;w6b:}-c  
} @Tfwh/UN  
insertSort(data,0,1); Z"n'/S:q  
} : >wQwf  
()nKug`.@  
/** 0qL V(L  
* @param data 2 ]DCF  
* @param j aFr!PQp4{  
* @param i or%gTVZ  
*/ 2c"N-c&A  
private void insertSort(int[] data, int start, int inc) { juYA`:qE&  
int temp; ),;D;LI{S  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); :,%J6Zh?  
} jW1YTQ  
} ])QO%  
} e>,9]{N+$  
%uz|NRB=  
} bQXc IIa{  
gY>;|),  
快速排序: *dG}R#9Nv  
Sqdc1zC  
package org.rut.util.algorithm.support; $(KIB82&  
qu<B%v  
import org.rut.util.algorithm.SortUtil; ~}$\B^z+  
OAW=Pozr9  
/** ?z5ne??  
* @author treeroot rw5#e.~V  
* @since 2006-2-2 oN[Fza>  
* @version 1.0 - - i&"  
*/ 5?3Isw`v2  
public class QuickSort implements SortUtil.Sort{ L,b|Iq  
XN~#gm#  
/* (non-Javadoc) ^ea RgNz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k1f3?l vlU  
*/ &\"Y/b]  
public void sort(int[] data) { VMxYZkMNd_  
quickSort(data,0,data.length-1); ?jNF6z*M6  
} 8/Et&TJ`  
private void quickSort(int[] data,int i,int j){ J0?$v6S  
int pivotIndex=(i+j)/2; 8^<c,!DM  
file://swap CdBthOPX)  
SortUtil.swap(data,pivotIndex,j); ";)r*UgR{B  
I"8d5a}  
int k=partition(data,i-1,j,data[j]); ~@[(N]=q  
SortUtil.swap(data,k,j); [^?13xMb  
if((k-i)>1) quickSort(data,i,k-1); >vD['XN,  
if((j-k)>1) quickSort(data,k+1,j); wUZQB1$F  
|u^)RB  
} i(M(OR/4  
/** JdaFY+f :  
* @param data (MgL"8TS  
* @param i kF(Ce{;z  
* @param j `"xk,fVYd  
* @return 9nng}em>.  
*/ Y H<$ +U  
private int partition(int[] data, int l, int r,int pivot) { _L*f8e8  
do{ ^H5w41  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); /{fZH,!L  
SortUtil.swap(data,l,r); Fy 4Tvg  
} H/^ ~<U#p  
while(l SortUtil.swap(data,l,r); u{g]gA8s  
return l; * T JBPM,  
} 5"1!p3`\D{  
DapQ}2'_  
} 9Tzc(yCY  
hf_R\C(c  
改进后的快速排序: ..??O^   
"%:7j!#X|I  
package org.rut.util.algorithm.support; \# 7@a74  
i'M^ez)u  
import org.rut.util.algorithm.SortUtil; ge^!F>whr  
rU; g0'4e  
/** d>^~9X  
* @author treeroot i Bi7|  
* @since 2006-2-2 _TZW|Dh-2F  
* @version 1.0 2#'rk'X,K  
*/ L&:M8xiA~$  
public class ImprovedQuickSort implements SortUtil.Sort { I") H~  
B1y<.1k  
private static int MAX_STACK_SIZE=4096; lN);~|IOv7  
private static int THRESHOLD=10; :_MP'0QP  
/* (non-Javadoc) ;rNd701p"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !$D&6M|C8l  
*/ ,`D/sNP ,q  
public void sort(int[] data) { i B%XBR  
int[] stack=new int[MAX_STACK_SIZE]; 1T!cc%ah  
''_,S,.a20  
int top=-1; H9sZR>(^  
int pivot; grGhN q  
int pivotIndex,l,r; zs4>/9O  
?x:m;z/  
stack[++top]=0; ~q{\;  
stack[++top]=data.length-1; {*sGhGwr  
D`V6&_. p  
while(top>0){ SrSG{/{  
int j=stack[top--]; \.5F](:  
int i=stack[top--]; sjSi;S4  
b([:,T7  
pivotIndex=(i+j)/2; 1JIG+ZNmd  
pivot=data[pivotIndex]; Pl_^nFm0  
JK[T]|G  
SortUtil.swap(data,pivotIndex,j); NK8<= n%"  
$6W3EOl  
file://partition HB%K|&!+  
l=i-1; sD{ j@WEZ  
r=j; S3ErH,XB.  
do{ {&E?<D2_&  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); I[@ts!YD  
SortUtil.swap(data,l,r); *K`x;r  
} [9LxhPi  
while(l SortUtil.swap(data,l,r); Ih; aBS  
SortUtil.swap(data,l,j); `4_c0 q)N4  
qbH %Hx  
if((l-i)>THRESHOLD){ V)=Z6ti  
stack[++top]=i; Qy/uB$q{A  
stack[++top]=l-1; )GK+  
} OH>r[,z0  
if((j-l)>THRESHOLD){ &i)helXs]  
stack[++top]=l+1; )Q~C4C-j  
stack[++top]=j; nMkOUW:T!  
} xg?auje  
ti}f&w ICJ  
} Vu=] O/ =P  
file://new InsertSort().sort(data); _FT6]I0  
insertSort(data); h 5Hr[E1  
} axtb<5&  
/** ><cU7 ja[^  
* @param data @`6}`k  
*/ ubi~%  
private void insertSort(int[] data) { +N7"EROc  
int temp; >:A<"wZ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); oooS s&t  
} ;uK";we  
} .8K6C]gw  
} ewpig4  
Gy9 $Wj  
} lirNYJ]tO  
^,`M0g\$  
归并排序: Oo1ecbY  
g>_OuQ|c  
package org.rut.util.algorithm.support; oXdel Ju?  
W+K.r?G<j  
import org.rut.util.algorithm.SortUtil; *Z; r B  
w763 zi{  
/** ^zg acn  
* @author treeroot /9Z!p  
* @since 2006-2-2 NZ+7p{&AN  
* @version 1.0 JYQ.EAsr!  
*/ @`S.@^%7fO  
public class MergeSort implements SortUtil.Sort{ (n,N8k;  
7*/J4MN  
/* (non-Javadoc) }3J=DCtS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x}|+sS,g  
*/ YQYX,b  
public void sort(int[] data) { ' Rc#^U*n  
int[] temp=new int[data.length]; T<6GcI>A  
mergeSort(data,temp,0,data.length-1); p31oL{D  
} )b9_C O}  
`c9'0*-  
private void mergeSort(int[] data,int[] temp,int l,int r){ -=a[J;'q  
int mid=(l+r)/2; nE$ f  
if(l==r) return ; zqf[Z3  
mergeSort(data,temp,l,mid); T pD;  
mergeSort(data,temp,mid+1,r); 7h`^N5H.q  
for(int i=l;i<=r;i++){ P$OUi!"  
temp=data; Bzw19S6y  
} GyK(Vb"h6  
int i1=l; #Kl}= 1 4  
int i2=mid+1; ' %&z.{  
for(int cur=l;cur<=r;cur++){ |z*>ixK  
if(i1==mid+1) >Nh`rkR2[  
data[cur]=temp[i2++]; (:n|v%  
else if(i2>r) E30Z`$cz:  
data[cur]=temp[i1++]; }LQC.!  
else if(temp[i1] data[cur]=temp[i1++]; \<V)-eB   
else {OP~8e"  
data[cur]=temp[i2++]; y42#n  
} 9@'4P  
} b i~=x  
F&az":  
} Y{+3}drJE  
G "brT5:  
改进后的归并排序: q:]Q% IC^  
E-SG8U;  
package org.rut.util.algorithm.support; d}+W"j;  
l!@ 1u^v2  
import org.rut.util.algorithm.SortUtil; #U"1 9@|}  
J@Yj\9U  
/** gr+Pl>C{  
* @author treeroot BIj   
* @since 2006-2-2 wE6A 7\k%  
* @version 1.0 p+Lv=e)0u  
*/ Mk5RHDh  
public class ImprovedMergeSort implements SortUtil.Sort { lDN?|YG  
3{RL \gh$"  
private static final int THRESHOLD = 10; EO:avH.*0  
MGaiTN^_<  
/* K*+6`z#fMF  
* (non-Javadoc) L!y"d!6C  
* -?fR|[\[U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `D2Mss$!  
*/ 6t m \L  
public void sort(int[] data) { onnugj3  
int[] temp=new int[data.length]; !*vBW/  
mergeSort(data,temp,0,data.length-1); B^q<2S;  
} U=m=1FYaG  
wOg,SMiq  
private void mergeSort(int[] data, int[] temp, int l, int r) { PeNF+5s/K  
int i, j, k; a+ GJVJ  
int mid = (l + r) / 2; {y-`QS  
if (l == r) h<NRE0-  
return; ,YB1 y)x  
if ((mid - l) >= THRESHOLD) A3q*$.[  
mergeSort(data, temp, l, mid); Pa&4)OD  
else j^ EbO3  
insertSort(data, l, mid - l + 1); ]w[ThHRJ  
if ((r - mid) > THRESHOLD) 6fGK (r  
mergeSort(data, temp, mid + 1, r); (U9a@ 1  
else Oy$<QXj/  
insertSort(data, mid + 1, r - mid); D=&K&6rr  
GOVAb'  
for (i = l; i <= mid; i++) { n9] ~  
temp = data; W[|[;{  
} DsQ/aG9c%  
for (j = 1; j <= r - mid; j++) { fj+O'X  
temp[r - j + 1] = data[j + mid]; ~L'nz quF  
} } 0{B  
int a = temp[l]; E {>`MNj  
int b = temp[r]; KlO(o#&N  
for (i = l, j = r, k = l; k <= r; k++) { xZ+]QDKC  
if (a < b) { P']Y( !L  
data[k] = temp[i++]; .@k*p>K  
a = temp; c#pj:f*H  
} else { o;QZe&  
data[k] = temp[j--]; )`Ed_F}k  
b = temp[j]; ?OsS`)T  
} 7zGMkl  
} GAp!nix6h  
} g^j7@dum  
Z*eoA  
/** ?D=8{!R3  
* @param data p;`N\.ld  
* @param l aQ|hi F}  
* @param i ps+:</;Z  
*/ #T"64%dX  
private void insertSort(int[] data, int start, int len) { 3cThu43c  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Le&;g4%  
} [H^ X"D  
} 968^ "T#  
} 9h&yuS'Yj  
} N-QCfDao  
sN]Z #7  
堆排序: gZ`DT  
CQ>]jQ,2  
package org.rut.util.algorithm.support; %3G;r\|r]  
U~/ID  
import org.rut.util.algorithm.SortUtil; v#Upw\!  
/ O)6iJ  
/** voh^|(:(TH  
* @author treeroot SRWg[H  
* @since 2006-2-2 uV77E*+7\  
* @version 1.0 ]l&'k23~p  
*/ 0;cuX@A/a?  
public class HeapSort implements SortUtil.Sort{ } 07r  
iZC`z }  
/* (non-Javadoc) 6b#~;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P` ]ps?l  
*/ j_c+.iET  
public void sort(int[] data) { G_(ct5:_"!  
MaxHeap h=new MaxHeap(); J6auUm` `  
h.init(data); #(dhBEXPW;  
for(int i=0;i h.remove(); ^c'f<<z|7r  
System.arraycopy(h.queue,1,data,0,data.length); !I7?  
} 7d9Z/J@>  
K~@`o-Z[  
private static class MaxHeap{ "tX7%(  
hBy*09Sv  
void init(int[] data){ 0BDS_Rx  
this.queue=new int[data.length+1]; 8&?p  
for(int i=0;i queue[++size]=data; {(0Id!  
fixUp(size); XtzOFx/  
} {aIZFe}B  
} 8Fx]koP.  
PUKVn+h  
private int size=0; JV%nH! Fs  
@,Jb7V<  
private int[] queue; ;qb Dbg  
8]]@S"ZM,\  
public int get() { .hne)K%={y  
return queue[1]; KBj@V6Q  
} g]4y AV<2  
%I}'Vb{C  
public void remove() { U!NI_uk  
SortUtil.swap(queue,1,size--); @ExLh9  
fixDown(1); WKOI\  
} WL/5 oj  
file://fixdown oX{@'B  
private void fixDown(int k) { >uW^.e "F  
int j; 4 +I 3+a"  
while ((j = k << 1) <= size) { kyu2)L2u  
if (j < size %26amp;%26amp; queue[j] j++; 5\3 swP_7  
if (queue[k]>queue[j]) file://不用交换 E4Zxv*  
break; `GS cRhbh  
SortUtil.swap(queue,j,k); '}CN?f|.  
k = j; UQnBqkE  
} 0<3E  
} R. O  
private void fixUp(int k) { [9J:bD  
while (k > 1) { ?(>k,[n  
int j = k >> 1; 4uPH  
if (queue[j]>queue[k]) L9$&-A9ix  
break; Eo Ko   
SortUtil.swap(queue,j,k); s!aO*\[<h  
k = j; zF?31\GOX  
} "R8.P/ 3  
} y]7%$* <  
@"0uM?_)-  
} @wMQC\Z  
 M$F{N  
} Enu!u~1]F  
[.ey_}X8  
SortUtil: pbPz$Y  
*h:D|4oJ(  
package org.rut.util.algorithm; drbe#FObX  
8<Xq=*J+  
import org.rut.util.algorithm.support.BubbleSort; z>7=k`x`:  
import org.rut.util.algorithm.support.HeapSort; ]I8]mUiUH  
import org.rut.util.algorithm.support.ImprovedMergeSort; 1z3]PA!R  
import org.rut.util.algorithm.support.ImprovedQuickSort; hRa\1Jt>a  
import org.rut.util.algorithm.support.InsertSort; }\>+H  
import org.rut.util.algorithm.support.MergeSort; pL8H8kn  
import org.rut.util.algorithm.support.QuickSort; '!AT  
import org.rut.util.algorithm.support.SelectionSort; }iMXXXBOT  
import org.rut.util.algorithm.support.ShellSort;  k~{Fnkt  
O/(3 87=U  
/** i},d[  
* @author treeroot `|&\e_"DE  
* @since 2006-2-2 gji*Wq  
* @version 1.0 0e)lY='^_  
*/ (x}A_ i  
public class SortUtil { xC'mPcU8  
public final static int INSERT = 1; k]t,q$Vd  
public final static int BUBBLE = 2; ]9#CVv[rq  
public final static int SELECTION = 3; l},dQ4R  
public final static int SHELL = 4; hH#lTye  
public final static int QUICK = 5; eU`;L [  
public final static int IMPROVED_QUICK = 6; )4@M`8  
public final static int MERGE = 7; q)NXyy4BT  
public final static int IMPROVED_MERGE = 8; =[s8q2V  
public final static int HEAP = 9; *3 !(*F@M,  
hK Fk$A  
public static void sort(int[] data) { DE'Xq6#PK  
sort(data, IMPROVED_QUICK); 0,:iE\  
} : 2_ 0L  
private static String[] name={ tp7oc_s?.  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" C?8PT/  
}; O5u cI$s  
m\_+)eI|  
private static Sort[] impl=new Sort[]{ LFl2uV"  
new InsertSort(), *@CVYJ'<  
new BubbleSort(), !&qx7eOSpP  
new SelectionSort(), +d.u##$  
new ShellSort(), Rk}\)r\  
new QuickSort(), W&HF?w}s  
new ImprovedQuickSort(), 3xRM 1GgO  
new MergeSort(), :b.3CL\.6  
new ImprovedMergeSort(), 0Wjd-rzc,  
new HeapSort() 2=jd;2~  
}; @mvIt  
hT.4t,wa8  
public static String toString(int algorithm){ 4 U3C~J  
return name[algorithm-1]; rH[5~U  
} Dq{:R  
8FAT(f//.  
public static void sort(int[] data, int algorithm) { nUiS<D2  
impl[algorithm-1].sort(data); ;+TMx(  
} c$@`P  
iU.!oeR?  
public static interface Sort { R 4DM_ u  
public void sort(int[] data); AEB/8%l};v  
} -kWO2  
f1)HHUB  
public static void swap(int[] data, int i, int j) { 5T~3$kuO  
int temp = data; @<hF.4,]  
data = data[j]; kJHr&=VO~  
data[j] = temp; {CW1t5$*  
} K4iI:  
} <E D8"~_  
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