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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。 1G`zwfmh~  
插入排序: Pk/3oF  
9?38/2kX4  
package org.rut.util.algorithm.support; e754g(|>b  
O]VHX![Y$  
import org.rut.util.algorithm.SortUtil; .u3Z*+  
/** LCMZw6p  
* @author treeroot $az9Fmta  
* @since 2006-2-2 +"GBuNh  
* @version 1.0 @wPyXl  
*/ |y.^F3PE  
public class InsertSort implements SortUtil.Sort{ U-:"Wx%G  
\m%Z;xKG  
/* (non-Javadoc) %n)H(QPW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vlVHoF;&  
*/ { YMO8  
public void sort(int[] data) { ,vs#(d6G  
int temp; ArVW2gL  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); uWDWf5@  
} q~6a$8+t  
} }CGA)yK~3  
} VxW>Xx G0  
8{DW$Z tR  
} Ge^(Ag}vE  
%pj T?G7  
冒泡排序: zJH:`~GxE  
tb/`*Yl@  
package org.rut.util.algorithm.support; 9(pF!}1 %\  
(;cKv  
import org.rut.util.algorithm.SortUtil; c0f8*O4i  
BK)3b6L=%  
/** W'{o`O=GGr  
* @author treeroot ]47!Zo,  
* @since 2006-2-2 )'i n}M  
* @version 1.0 pv"QgH  
*/ 'BX U '  
public class BubbleSort implements SortUtil.Sort{ iT=h }>  
B+4WnR1%T  
/* (non-Javadoc) RXw }Tb/D8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &|I{ju_  
*/ -58Sb"f  
public void sort(int[] data) { S5/p3;O\c  
int temp; qlm7eS"sy  
for(int i=0;i for(int j=data.length-1;j>i;j--){ q_86nvB<  
if(data[j] SortUtil.swap(data,j,j-1); oCSJ<+[(C  
} &6&$vF65c  
} l&{+3aC:  
} OICH:(t_  
} MmH(dp+  
63HtZ=hO7  
} r*f:%epB%  
[vn"r^P  
选择排序: WXFC e@  
(Qd@Q,@(s  
package org.rut.util.algorithm.support; 4Ul*`/d  
-'rb+<v  
import org.rut.util.algorithm.SortUtil; hh8U/dVk*  
 Q5 =  
/** F@<^  
* @author treeroot "sJ@_lp  
* @since 2006-2-2 }e-D&U  
* @version 1.0 U[G5<&Z^  
*/ &UIS17cT  
public class SelectionSort implements SortUtil.Sort { F5 7Kr5X  
1 EwCF  
/* jhB+ ]  
* (non-Javadoc) Z> <,t~o}  
* S.|%dz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;nw}x4Y[  
*/ H,Yrk(O-  
public void sort(int[] data) { f{+X0Oj  
int temp; tvOyT6]  
for (int i = 0; i < data.length; i++) { M5c *vs  
int lowIndex = i;  U92?e}=]  
for (int j = data.length - 1; j > i; j--) { .(Tf$V  
if (data[j] < data[lowIndex]) { $D;-;5[-/r  
lowIndex = j; :wz]d ~)  
} QRHM#v S  
} cF}9ldc  
SortUtil.swap(data,i,lowIndex); T)mh  
} |vY|jaV}  
} kb[+II  
,+!|~1  
} 5"z~BE7  
TGzs|-  
Shell排序: >K*TgG6!X  
rnQ9uNAu  
package org.rut.util.algorithm.support; o?><(A|  
)F m'i&F_  
import org.rut.util.algorithm.SortUtil; } QpyU%  
sfR0wEqI  
/** Fiaeo0  
* @author treeroot rq|>z.  
* @since 2006-2-2 9 =D13s(C  
* @version 1.0 9d8U@=  
*/ %B(E;t63W  
public class ShellSort implements SortUtil.Sort{ K}8wCS F  
\9k{h08s  
/* (non-Javadoc) Y0g6zHk7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4 IXa[xAm  
*/ xPMX\aI|l  
public void sort(int[] data) { <5npVm  
for(int i=data.length/2;i>2;i/=2){ ZG)6{WS  
for(int j=0;j insertSort(data,j,i); I 8 Ls_$[  
} `! _mIh}  
} X;d 1@G  
insertSort(data,0,1); 'J:xTp  
} ?<~P)aVVj  
[cT7Iqip  
/** LEA^o"NW.  
* @param data Y*YV/E.  
* @param j [Y8ot-6  
* @param i G&#l3bkQ  
*/ hSXZu?/  
private void insertSort(int[] data, int start, int inc) { UB7C,:"  
int temp; Xagz(tm/  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 4_w{~  
} |V mQ  
} Vc&xXtm[v  
} D`NQEt"(  
NLZUAtx(  
} M 9/J!s  
YiC_,8A~  
快速排序: ]Ab$IK Y  
Gt;U9k|i  
package org.rut.util.algorithm.support; m-R`(  
c{!XDiT]P  
import org.rut.util.algorithm.SortUtil; 2x:aMWh  
9On(b|mT  
/** ICUI0/J  
* @author treeroot I=|}%WO#  
* @since 2006-2-2 ;xjw'%n,  
* @version 1.0 =EUi| T4:  
*/ ?Bsc;:KF  
public class QuickSort implements SortUtil.Sort{ =:Lc-y>  
6Lz:J:Q)  
/* (non-Javadoc) ::!{f+Up  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &u0on) E  
*/ kx07Ium  
public void sort(int[] data) { #RP7?yGM,  
quickSort(data,0,data.length-1); Df0m  
} i~.9 B7hdE  
private void quickSort(int[] data,int i,int j){ XZ_vbYTj  
int pivotIndex=(i+j)/2; Jl{g"N{2u'  
file://swap e'&<DE)  
SortUtil.swap(data,pivotIndex,j); Pql;5 ~/  
7-[^0qS  
int k=partition(data,i-1,j,data[j]); U&L?IT=x  
SortUtil.swap(data,k,j); UE K$  
if((k-i)>1) quickSort(data,i,k-1); @mu=7_$U  
if((j-k)>1) quickSort(data,k+1,j); D]hwG0Chd  
])mYE }g  
} 5j#XNc)"  
/** RhI>Ak;-  
* @param data ){"-J&@?  
* @param i |"k+j_/+  
* @param j 8&++S> <  
* @return we2D!Ywr  
*/ c8M'/{4rH  
private int partition(int[] data, int l, int r,int pivot) { TbR!u:J  
do{ (kZ2D  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); R% )7z)~  
SortUtil.swap(data,l,r); kT4Oal+4  
} a'YK1QX  
while(l SortUtil.swap(data,l,r); |v= */e  
return l; |H4f&& Wd  
} Uf<IXx&;  
H1a<&7  
} Rx.dM_S  
3L-}B#tI  
改进后的快速排序: P{o/ /M  
I] 0 D*z  
package org.rut.util.algorithm.support; K5:>  
.u&GbM%Ga  
import org.rut.util.algorithm.SortUtil; IGcYPL\&  
fz`\-"f]  
/** LABLT;c  
* @author treeroot yn KgNi  
* @since 2006-2-2 (-esUOB.  
* @version 1.0 ]B9Ut&mF;  
*/ [:bYd}J  
public class ImprovedQuickSort implements SortUtil.Sort { mE3M$2}  
ec"+Il  
private static int MAX_STACK_SIZE=4096; QHbjZJ N  
private static int THRESHOLD=10; E~eSHJ(oR7  
/* (non-Javadoc) nfA#d-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LLW xzu!<  
*/ -%>.Z1uj  
public void sort(int[] data) { cA25FD  
int[] stack=new int[MAX_STACK_SIZE]; =Vi>?fWpn=  
AJR`ohh  
int top=-1; cj9<!"6  
int pivot; W5zlU2  
int pivotIndex,l,r; UN7J6$!Cx7  
^HI}bS1+|  
stack[++top]=0; <ly.l]g  
stack[++top]=data.length-1; [E4#|w  
qn#f:xltu  
while(top>0){ Nt P=m @  
int j=stack[top--]; FOD_m&+  
int i=stack[top--]; !; COFR  
z.]  
pivotIndex=(i+j)/2; V] 0~BV  
pivot=data[pivotIndex]; O`Ge|4  
KImazS^  
SortUtil.swap(data,pivotIndex,j); +!)v=NY  
GN@(!V#/4  
file://partition wU)vJsOq  
l=i-1; +N>&b%  
r=j; /GMT  
do{ Mh*^@_h?  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); GsvB5i  
SortUtil.swap(data,l,r); }^}ep2^  
} Jevr.&;O  
while(l SortUtil.swap(data,l,r); \KT}T  
SortUtil.swap(data,l,j); 9ld'SB:#  
*/E5<DO  
if((l-i)>THRESHOLD){ #ybtjsu'"U  
stack[++top]=i; I.RmBUq):s  
stack[++top]=l-1; WR@TH bU  
} >Mc,c(CvU  
if((j-l)>THRESHOLD){ Pq)C(Z  
stack[++top]=l+1; MPF;P&6  
stack[++top]=j; =r1 @?x  
} .m_-L Y-  
|)IS[:X  
} [SX>b"L  
file://new InsertSort().sort(data); KiO1l{.s8n  
insertSort(data); KL6FmL)HH  
} *:hHlH* t1  
/** 5p`.RWls  
* @param data k\`~v$R3  
*/ YQ#o3 sjs  
private void insertSort(int[] data) { TEt+At`]  
int temp; %W:]OPURK  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); F)^:WWVc#  
} ~Bs=[TNd[  
} >{huaN B  
} ew{(@p+$  
Qg' {RAV8  
} (2fWJ%7VG  
0N(o)WRv  
归并排序: Kzz]ZO*3  
!e0~|8  
package org.rut.util.algorithm.support; yttIA/  
tf_<w?~  
import org.rut.util.algorithm.SortUtil; >)p8^jX   
^YwTO/Q|  
/** |Wzdu2T  
* @author treeroot *='J>z.]  
* @since 2006-2-2 j65qIw_Z  
* @version 1.0 z~y=(T  
*/ :q,tmk h  
public class MergeSort implements SortUtil.Sort{ o9#8q_D9  
R@Kzdeo  
/* (non-Javadoc) BT8L'qEj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >V1v.JH  
*/ Y6r<+#V  
public void sort(int[] data) { ,z+7rl  
int[] temp=new int[data.length]; X23#y7:  
mergeSort(data,temp,0,data.length-1); F ;;\I  
} %an&lcoX  
C!Oz'~l  
private void mergeSort(int[] data,int[] temp,int l,int r){ .PJCBT e  
int mid=(l+r)/2; SWrP0Qjc  
if(l==r) return ; j`A3N7;  
mergeSort(data,temp,l,mid); x\MzMQ#Bf  
mergeSort(data,temp,mid+1,r); xgV(0H}Mf  
for(int i=l;i<=r;i++){ 0.}WZAYy~  
temp=data; !w }cKm  
} l'0fRQc  
int i1=l; ^B`*4  
int i2=mid+1; FyV)Nmc%t  
for(int cur=l;cur<=r;cur++){ B8sc;Z.  
if(i1==mid+1) B%Vz -t  
data[cur]=temp[i2++]; -AcVVK&  
else if(i2>r) cgevP`*]  
data[cur]=temp[i1++]; Y~%9TC  
else if(temp[i1] data[cur]=temp[i1++]; _Nmc1azS  
else Iurb?  
data[cur]=temp[i2++]; 3(n+5~{e  
} zEYT,l  
} fce~a\y0  
"fTW2D74  
} AV%t<fDG#  
/$NZj" #  
改进后的归并排序: u^Sa{Jk=  
qe{:9  
package org.rut.util.algorithm.support; |}Wm,J  
./# F,^F2  
import org.rut.util.algorithm.SortUtil; "g=g' W#  
s}5,<|DL  
/** e0; KmQjG  
* @author treeroot SZ'2/#R>  
* @since 2006-2-2 WQ>y;fi5/{  
* @version 1.0 U 3UDA  
*/ \2Atm,#4  
public class ImprovedMergeSort implements SortUtil.Sort { xYUC|c1Q9  
XzF-g*e  
private static final int THRESHOLD = 10; OPtFz6   
YLVZ]fN=>  
/*  wq@{85  
* (non-Javadoc) K.T.?ug;:  
* GjD^\d/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !:<(p  
*/ #Z)8,N  
public void sort(int[] data) { l k?@ =U~  
int[] temp=new int[data.length]; ta'{S=^j  
mergeSort(data,temp,0,data.length-1); 'W2B**}  
} d=v{3*a_4,  
oFC]L1HN&  
private void mergeSort(int[] data, int[] temp, int l, int r) { :,'yHVG\  
int i, j, k; H;.${u^lhd  
int mid = (l + r) / 2; aIXN wnq  
if (l == r) HJ]9e  
return; U6/$CH<pe  
if ((mid - l) >= THRESHOLD) #o/  
mergeSort(data, temp, l, mid); Z>)M{25  
else g&<3Kl  
insertSort(data, l, mid - l + 1); ,VdNP  
if ((r - mid) > THRESHOLD) e [ 9  
mergeSort(data, temp, mid + 1, r); c>}f y  
else (0W)Jd[  
insertSort(data, mid + 1, r - mid); 9yrSCDu00  
oZCjci-  
for (i = l; i <= mid; i++) { xP61^*-2  
temp = data; $ 9%UAqk9  
} _q7mYc  
for (j = 1; j <= r - mid; j++) { dbG5Cf#K\  
temp[r - j + 1] = data[j + mid]; fDU_eyt/Z'  
} ;?K>dWf3f  
int a = temp[l]; } S,KUH.  
int b = temp[r]; 2QN ~E  
for (i = l, j = r, k = l; k <= r; k++) { "1iLfQ  
if (a < b) { nQ5N\RAZ  
data[k] = temp[i++]; z 7 s&7)a  
a = temp; J% mtlA  
} else { C1ZuDL)e  
data[k] = temp[j--]; r]<?,xx [  
b = temp[j]; )'3V4Z&  
} J'H}e F`  
} n&N>$c,T27  
} k`u.:C&  
ObyF~j}j  
/** ["65\GI?  
* @param data t 8,VRFV  
* @param l 4/J"}S  
* @param i lv=rL  
*/ =(cfo_B@K  
private void insertSort(int[] data, int start, int len) { 7(W"NF{r  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); snm1EPj  
} u#^~([ I  
} $FM: 8^  
} A]_5O8<buW  
} G%#M17   
8`GN8 F  
堆排序: ;T,`m^@zf  
A/A; '9  
package org.rut.util.algorithm.support; +{dJGPoY]p  
T_NN.Ol   
import org.rut.util.algorithm.SortUtil; | ycN)zuE  
H b}(.`  
/** T}r}uw`  
* @author treeroot 7LrWS83  
* @since 2006-2-2 i~sW_f+  
* @version 1.0 7~ =r9-&G  
*/ |J:kL3g  
public class HeapSort implements SortUtil.Sort{ @||GMA+|  
d"U'\ID2y  
/* (non-Javadoc) ! a!^'2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xwjiNJ Gj  
*/ dc=~EG-_rM  
public void sort(int[] data) { ^9`S`Bhp  
MaxHeap h=new MaxHeap(); 9tBE=L=  
h.init(data); (D~NW*,9  
for(int i=0;i h.remove(); <Dq7^,}#  
System.arraycopy(h.queue,1,data,0,data.length); {wwkbc*  
} e.l3xwt>$  
t}x^*I$*  
private static class MaxHeap{ mVVL[z2+  
sOb=+u$$9  
void init(int[] data){ m(rd\3d  
this.queue=new int[data.length+1]; ^W*3S[-`g  
for(int i=0;i queue[++size]=data; trm-&e7q?;  
fixUp(size); h4geoC_W2  
} G+V?c1Me  
} :211T&B%A_  
 5JggU  
private int size=0; <F6LC_  
DNmP>~  
private int[] queue; ( *Fb/  
2'T uS?  
public int get() { MNWuw;:v  
return queue[1]; =Yt)b/0b9  
} xI( t!aYp  
>yr1wVS  
public void remove() { < s1  
SortUtil.swap(queue,1,size--); t^5xq8w8  
fixDown(1); ;oGpB#[zO  
} T'${*NVn  
file://fixdown wG}Rh,  
private void fixDown(int k) { Q=n2frW(T  
int j;  Lxqv  
while ((j = k << 1) <= size) { K1_#Jhz  
if (j < size %26amp;%26amp; queue[j] j++; Kk|4  
if (queue[k]>queue[j]) file://不用交换 gBd@4{y6C.  
break; W0;MGBfb  
SortUtil.swap(queue,j,k); (_Ky' .  
k = j; 1!p7N$QR  
} * G0I2  
} $-p#4^dg  
private void fixUp(int k) { kpLx?zW--q  
while (k > 1) { F7lzc)  
int j = k >> 1; 56 [+;*  
if (queue[j]>queue[k]) 6 H' W]T&  
break; .F^372hH3  
SortUtil.swap(queue,j,k); JGG(mrvR  
k = j; q:vc ;y  
} W`gzMx  
} fZNe[|  
k#DMd9  
} l0nm>ps'D  
_,bDv`>Ra  
} s MNhD/bb  
G-Dc(QhU&  
SortUtil: b 67l\L  
cu )w6!f  
package org.rut.util.algorithm; #Zj3SfU~`  
.ovG_O  
import org.rut.util.algorithm.support.BubbleSort; "?r_A*U  
import org.rut.util.algorithm.support.HeapSort; \?~cJMN  
import org.rut.util.algorithm.support.ImprovedMergeSort; Xcw 6mpLt  
import org.rut.util.algorithm.support.ImprovedQuickSort; NGL,j\(~7  
import org.rut.util.algorithm.support.InsertSort; @*^%^ P  
import org.rut.util.algorithm.support.MergeSort; hzV= 7  
import org.rut.util.algorithm.support.QuickSort; ?my2dd,|  
import org.rut.util.algorithm.support.SelectionSort; )=5 ,S~IT  
import org.rut.util.algorithm.support.ShellSort; rPUk%S  
J e.%-7f  
/** DtglPo_(  
* @author treeroot -a`P W  
* @since 2006-2-2 &[qJ=HMm I  
* @version 1.0 lqZUU92;  
*/ wHE1Jqpo  
public class SortUtil { Ta NcnAY>9  
public final static int INSERT = 1; {jOV8SVL  
public final static int BUBBLE = 2; GFfZ TA  
public final static int SELECTION = 3; 3fd?xhWbN  
public final static int SHELL = 4; }2.0e5[  
public final static int QUICK = 5; 9six]T  
public final static int IMPROVED_QUICK = 6; J|.n bSE  
public final static int MERGE = 7; qj1Fj  
public final static int IMPROVED_MERGE = 8; F/w*[Xi Sh  
public final static int HEAP = 9; v/[*Pze,C  
Kw87 0n<  
public static void sort(int[] data) { |h^]`= 3  
sort(data, IMPROVED_QUICK); Yc2dq e>  
} 0}qnq"  
private static String[] name={ Jm[_X  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" mJ JF  
}; -W.bOr  
6S&OE k  
private static Sort[] impl=new Sort[]{ ]*TW%mY  
new InsertSort(), xV>sc;PEb  
new BubbleSort(), {pz7ADK<  
new SelectionSort(), J?_-Dg(=  
new ShellSort(), rt C:3fDy  
new QuickSort(), f(E[jwy  
new ImprovedQuickSort(), &@fW6},iW  
new MergeSort(), xFp?+a  
new ImprovedMergeSort(), 9^1li2zk{  
new HeapSort() @~C C$Y$  
}; h%8C_m A  
o@uZU4MM  
public static String toString(int algorithm){ n0%5mTUN  
return name[algorithm-1]; g[ O6WZ!F_  
}  4 `]  
\ fSo9$  
public static void sort(int[] data, int algorithm) { Rg%Xy`gS  
impl[algorithm-1].sort(data); 3S{3AmKj?  
} ^F g!.X_  
oz&RNB.K  
public static interface Sort { :@#6]W  
public void sort(int[] data); OCv,EZ  
} /amWf^z  
V#TNv0&0  
public static void swap(int[] data, int i, int j) { Z7J4r TA  
int temp = data; Xz\X 8I  
data = data[j]; N?><%fra  
data[j] = temp; ~'VVCtA  
} KS Q*HO)5  
} Ws;X;7tS  
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