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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。 ZZ!6O/M  
插入排序: Oa@SyroF=  
+ZE"pA^C  
package org.rut.util.algorithm.support; E'8XXV^I?P  
J$jLGy&'  
import org.rut.util.algorithm.SortUtil; 1,Pg^Xu  
/** d--6<_q  
* @author treeroot (l2n%LL]*  
* @since 2006-2-2 DBvozTsF~  
* @version 1.0 yswf2F  
*/ 5|bfrc  
public class InsertSort implements SortUtil.Sort{ ~ U8#yo  
9K&YHg:1  
/* (non-Javadoc) )r*F.m{&:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |N^8zo :  
*/ ;uZq_^?:9&  
public void sort(int[] data) { %_5?/H@%3z  
int temp; iY sQ:3s  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); a{By U%  
} +]H!q W:  
} 9a1R"%Z  
} \)MzUOZn  
Esj1Vv#  
} ^q}phj3E  
b|k(:b-G&.  
冒泡排序: a[!:`o1U  
 V2 ;?  
package org.rut.util.algorithm.support; pnv)D}"  
ESS1 L$y  
import org.rut.util.algorithm.SortUtil; +H? XqSC  
##] `  
/** ?6MUyH]a  
* @author treeroot 9I1`*0A  
* @since 2006-2-2 j{ri]?p  
* @version 1.0 RSjcOQ8&.w  
*/ v] q"{c/  
public class BubbleSort implements SortUtil.Sort{ O6q5qA  
{ ux'9SA  
/* (non-Javadoc) !.|A}8nK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) te>Op 1R  
*/ x+Ly,9nc$  
public void sort(int[] data) { RtaMrG=D  
int temp; \:Hh'-77q  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 3Z}m5f`t  
if(data[j] SortUtil.swap(data,j,j-1); mI;\ UOh'  
} NeewV=[%  
} (I1^nrDP.  
} H,!yG5yF  
} K1- 3!G  
sa"!ckh  
} ~Bt >Y  
)o::~ eu  
选择排序: u@4khN: ^p  
b|.<rV'BTt  
package org.rut.util.algorithm.support; j#VR>0oC]\  
|Yi_|']#  
import org.rut.util.algorithm.SortUtil; 8tT/w5  
a7z% )i;Z  
/** w (odgD  
* @author treeroot z Hl+P*)  
* @since 2006-2-2 mP +H C)2  
* @version 1.0 %L  nG^L  
*/ kxY9[#:<fB  
public class SelectionSort implements SortUtil.Sort { y(**F8>?xE  
!3*%-8bp  
/* 17ynFHMd,  
* (non-Javadoc) m]VOw)mBF  
* t1o_x}z4.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )},/=#C0  
*/ P`n"E8"ab<  
public void sort(int[] data) { 55Ye7P-d  
int temp; -wnBdL  
for (int i = 0; i < data.length; i++) { PW*[(VX  
int lowIndex = i; qD}O_<_1ym  
for (int j = data.length - 1; j > i; j--) { P[P]oT.N  
if (data[j] < data[lowIndex]) { AT"!Ys|  
lowIndex = j; jXyK[q&O&  
} kl5Y{![/&f  
} RXhT{Ho(>  
SortUtil.swap(data,i,lowIndex); d]^\qeG^p  
} B}d)e_uLj  
} 4+N9Ylh  
ENZYrWl  
} &WVRh=R  
>% E=l  
Shell排序: *iVv(xXgN  
<TEDs4 C  
package org.rut.util.algorithm.support; 8H{9  
8-Z|$F"  
import org.rut.util.algorithm.SortUtil; >td\PW~X  
<IQ}j^u-F  
/** e[.JS6  
* @author treeroot hJoh5DIE95  
* @since 2006-2-2 E@)9'?q  
* @version 1.0 ]7%+SH,RdD  
*/ TmgSV#G  
public class ShellSort implements SortUtil.Sort{ J/A UOInh  
a +`;:tX,  
/* (non-Javadoc) F#l!LER^1g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N8`q.;qewz  
*/ 0F[+rh"x  
public void sort(int[] data) { U0dhr;l  
for(int i=data.length/2;i>2;i/=2){ )s8{|)-  
for(int j=0;j insertSort(data,j,i); pRh)DM#9  
} e:iqv?2t  
} 9Ui|8e~=  
insertSort(data,0,1); .:TSdusr~  
} BHIC6i%  
2NWQiSz  
/** R-BN}ZS  
* @param data m)xz_Plc  
* @param j !;&{Q^}  
* @param i MZ <BCRB  
*/ (L7%V !  
private void insertSort(int[] data, int start, int inc) { M}!E :bv'  
int temp; S>EO6z#   
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); sKL"JA T  
} @D=i|f  
} EceD\}  
} A@ 4Oq  
Qr*7bE(a  
} +bcJm  
^$J.l+<hy  
快速排序: Ku]<$uo  
95BRZ!ts  
package org.rut.util.algorithm.support; xayd_RB9  
s!j vBy  
import org.rut.util.algorithm.SortUtil; a^Lo;kHY  
[7=?I.\Cr7  
/** rPoq~p[Y  
* @author treeroot tD3v`Ke  
* @since 2006-2-2 [O^mG 9  
* @version 1.0 <FU1|  
*/ =_9grF-  
public class QuickSort implements SortUtil.Sort{ 4*_.m9{  
$or8z2d1  
/* (non-Javadoc) 9{n?Jy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |Ht~o(]&&/  
*/ fTV}IP  
public void sort(int[] data) { ?8@EBPpC  
quickSort(data,0,data.length-1); kk7M$)>d  
} {{e+t8J??  
private void quickSort(int[] data,int i,int j){ 1<&nHFJ;[  
int pivotIndex=(i+j)/2; >$N ?\\#  
file://swap %&S :W%qm?  
SortUtil.swap(data,pivotIndex,j); APL #-`XC  
OmC F8:\/  
int k=partition(data,i-1,j,data[j]); )W$@phY(I  
SortUtil.swap(data,k,j); $|!@$Aj  
if((k-i)>1) quickSort(data,i,k-1); 9i/VvW  
if((j-k)>1) quickSort(data,k+1,j); _J33u3v  
[5s4Jp$+  
} C!S( !Z,  
/** Tyt1a>! qA  
* @param data JAP4Vwj%j  
* @param i s<fzk1LZ  
* @param j n*vhCeL  
* @return K6@9=_A  
*/ ~ZZJ/Cu  
private int partition(int[] data, int l, int r,int pivot) { hYU4%"X  
do{ Y|N.R(sAs&  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); w2o5+G=  
SortUtil.swap(data,l,r); p& +w  
} Tn(c%ytN  
while(l SortUtil.swap(data,l,r); iP+3)  
return l; V75P@jv5J  
} *S{fyYyM  
xBK is\b  
} /&g~*AL  
]R8JBnA  
改进后的快速排序: 7q|51rZz  
8d*W7>rq  
package org.rut.util.algorithm.support; jp P'{mc  
Wd/m]]W8Q  
import org.rut.util.algorithm.SortUtil; r@]iy78 j  
.3< sv  
/** ?D`h[ai  
* @author treeroot I 7s}{pG  
* @since 2006-2-2 t{Xf3.  
* @version 1.0 g~Agy  
*/ ,)7y? *D}  
public class ImprovedQuickSort implements SortUtil.Sort { a) 5;Od  
Vo:Gp  
private static int MAX_STACK_SIZE=4096; =hDFpb,mr  
private static int THRESHOLD=10; m #}%l3$  
/* (non-Javadoc) (SGU]@)g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rk .tLk  
*/ Z^SF $+UN  
public void sort(int[] data) { !_#2$J*s^D  
int[] stack=new int[MAX_STACK_SIZE];  /DN!"  
2C_/T8  
int top=-1; *Z C$DW!-  
int pivot; Hlye:.$  
int pivotIndex,l,r; KJ;NcUq  
!Au9C   
stack[++top]=0; a>XlkkX  
stack[++top]=data.length-1; $3Srr*  
qJf=f3  
while(top>0){ :Vl2\H=P  
int j=stack[top--]; ;Alw`'  
int i=stack[top--]; EwH_k  
<\C/;  
pivotIndex=(i+j)/2; } qn@8}  
pivot=data[pivotIndex]; i*-L_!cc:  
H_<hZ UB  
SortUtil.swap(data,pivotIndex,j); > lIQM3  
/$,~|X;&  
file://partition EoD[,:*  
l=i-1; Ec;{N  
r=j; ;^Hg\a  
do{ &$+nuUA  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); dE0 p>4F  
SortUtil.swap(data,l,r); Vv3{jn6%  
} +U];  
while(l SortUtil.swap(data,l,r); 9 9S-P}xd  
SortUtil.swap(data,l,j); `U[s d*C"  
?ta(`+"  
if((l-i)>THRESHOLD){ ej9|Y5D"S  
stack[++top]=i; X9oxni#  
stack[++top]=l-1; {X'D07q  
} .|Zt&5osI  
if((j-l)>THRESHOLD){ A,'JmF$d  
stack[++top]=l+1; B>"O~ gZ{#  
stack[++top]=j; 1hnw+T<<W  
} xU_Dg56z'&  
3iC$ "9!p  
} $X%'je  
file://new InsertSort().sort(data); a2tRmil  
insertSort(data); 6 (@U+`  
} 6~_ TXy/  
/** FG[YH5  
* @param data bQFMg41*w7  
*/ mz kv/  
private void insertSort(int[] data) { rp^G k  
int temp; <>tQa5;  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \uT y\KA  
} 4Cl41a  
} ~gA p`Q  
} ;mw$(ZKa#  
_K5R?"H0  
} C+=8?u<  
S"wn0B$"  
归并排序: .3 JLa8y  
xOAA1#   
package org.rut.util.algorithm.support; ~$\9T.tre2  
Fw!TTH6l0  
import org.rut.util.algorithm.SortUtil; 6*]g~)7`Q~  
q;<=MO/  
/** m5/d=k0l  
* @author treeroot B"rfR_B2M#  
* @since 2006-2-2 f8c'`$O  
* @version 1.0 _R 6+bB$  
*/ ySEhi_)9^  
public class MergeSort implements SortUtil.Sort{ Xi~%,~  
2l#c?]TA  
/* (non-Javadoc) vL,:Yn@b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &+v!mw>  
*/ Xbp~cn  
public void sort(int[] data) { v3`k?jAaI  
int[] temp=new int[data.length]; ZFNn(n  
mergeSort(data,temp,0,data.length-1); &rmXz6 F  
} l9eCsVQ~V  
I}S~,4  
private void mergeSort(int[] data,int[] temp,int l,int r){  9AgTrP  
int mid=(l+r)/2; X>W2aDuEZ  
if(l==r) return ; h/a|-V}m&  
mergeSort(data,temp,l,mid); -~'{WSJ  
mergeSort(data,temp,mid+1,r); ZgP~VB0)$  
for(int i=l;i<=r;i++){ 1'G&PX   
temp=data; n8dJ6"L<"  
} >A RZ=x[  
int i1=l; +Kz baBK  
int i2=mid+1; `,O#r0m  
for(int cur=l;cur<=r;cur++){ c6@7>PM  
if(i1==mid+1) %gb4(~E+N  
data[cur]=temp[i2++]; 1K`7  
else if(i2>r) z9B" "ws  
data[cur]=temp[i1++]; bkvm-$/  
else if(temp[i1] data[cur]=temp[i1++]; ^-&BGQM  
else PS=N]e7k'  
data[cur]=temp[i2++]; 4|#@41\ B  
} jrKRXS  
} UbnX%2TW  
Hido[  
} &# ?2zbZ  
v, VCbmc  
改进后的归并排序: $xK2M  
'fGB#uBt  
package org.rut.util.algorithm.support; $gv3Up"U  
9 Y-y?Y  
import org.rut.util.algorithm.SortUtil; J:!m49fF  
p!OCF]r  
/** abW[hp  
* @author treeroot ruKm_j#J  
* @since 2006-2-2 +=:*[JEK,U  
* @version 1.0 pp2,d`01[L  
*/ R iPxz=kr  
public class ImprovedMergeSort implements SortUtil.Sort { !)1gGXRY  
M:9 6QM~  
private static final int THRESHOLD = 10; {%"n[DLps  
$q iY)RE  
/* pr) `7VuKp  
* (non-Javadoc) R'udC}  
* !pqfx93R*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XDtMFig  
*/ fK %${   
public void sort(int[] data) { uSl&d  
int[] temp=new int[data.length]; u3B[1Ae:K  
mergeSort(data,temp,0,data.length-1); YXi'^GU@  
} UBm L:Qv  
0,z3A>C  
private void mergeSort(int[] data, int[] temp, int l, int r) { dx&!RK+  
int i, j, k; P"%QFt,  
int mid = (l + r) / 2; e` QniTkT  
if (l == r) .T63:  
return; =1vl-*uYh  
if ((mid - l) >= THRESHOLD) WEnI[JGe  
mergeSort(data, temp, l, mid); {PTB]D'  
else L2,.af6+  
insertSort(data, l, mid - l + 1); Ki,SFww8r  
if ((r - mid) > THRESHOLD) >]!8f?,  
mergeSort(data, temp, mid + 1, r); cUH. ^_a  
else ,'nd~{pX"(  
insertSort(data, mid + 1, r - mid); wOLDHg_  
VbG#)>"F  
for (i = l; i <= mid; i++) { ieL7jN,'m  
temp = data; ]VCVV!G_=n  
} 9Ev<t \B  
for (j = 1; j <= r - mid; j++) { 5Qh$>R4!"  
temp[r - j + 1] = data[j + mid]; VK]cZ%)  
} [B,w\PLub  
int a = temp[l]; l+vD`aJ3  
int b = temp[r]; wqnHaWd*  
for (i = l, j = r, k = l; k <= r; k++) { 6${=N}3Kw  
if (a < b) { ^vHh*Ub  
data[k] = temp[i++]; MP3Vo|}3  
a = temp; ,l47;@kr  
} else { =<;C5kSD  
data[k] = temp[j--]; cEK<CV  
b = temp[j]; `B A'a" $  
} F{*h~7D-|  
} s;ivoGe}  
} &}y?Lt  
\2c 3Nsra  
/** a$AR  
* @param data ++=f7y u  
* @param l vmj'X>Q  
* @param i li37*  
*/ [pRRBMho  
private void insertSort(int[] data, int start, int len) { wU5.t -|`  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); cp)BPg  
} */6lyODf  
} TFAd  
}  3cA '9  
} * @=ZzL  
!\}X?G f  
堆排序: B" 0a5-pkr  
N*`qsv 0  
package org.rut.util.algorithm.support; H,3WdSL`K  
K0usBA  
import org.rut.util.algorithm.SortUtil; rHa*WA;TE  
z @21Z`,  
/** L+X:M/)  
* @author treeroot )vsX (/WU  
* @since 2006-2-2 <0!O'" "J  
* @version 1.0 YctWSfh  
*/ 9R m\@E [  
public class HeapSort implements SortUtil.Sort{ I !J'  
jf^BEz5  
/* (non-Javadoc) EvKzpxCh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X=KC +1e  
*/ W8_$]}G8E  
public void sort(int[] data) { mz|p=[lR|  
MaxHeap h=new MaxHeap(); j>`-BN_  
h.init(data); ~Jh1$O,9o  
for(int i=0;i h.remove(); 3OB=D{$V  
System.arraycopy(h.queue,1,data,0,data.length); x:6c@2  
} 5~[m]   
b]b+PK*h  
private static class MaxHeap{ ~JS BZ@  
h5Ee*D e  
void init(int[] data){ 8CUlE-R5  
this.queue=new int[data.length+1]; 6E-AfY'<  
for(int i=0;i queue[++size]=data; ]SmN}Iq1  
fixUp(size); Miz?t*|{[  
} ;O7Vl5R  
} i*((@:  
#M)+sK$H%f  
private int size=0; ]5r@`%9  
!T#EkMM  
private int[] queue; 1{A K=H')  
jx{wOb~oO)  
public int get() { z*UgRLKZD  
return queue[1]; )*XD"-9  
} v&qL r+_7  
2e9.U/9  
public void remove() { ifcp!l+8  
SortUtil.swap(queue,1,size--); q-s(2C  
fixDown(1); bE;c&g  
} )|=4H>?%  
file://fixdown ;pw9+zo ^M  
private void fixDown(int k) { fKW)h?.Kd  
int j; =NmW}x|n  
while ((j = k << 1) <= size) { .b? Aq^i8  
if (j < size %26amp;%26amp; queue[j] j++; yv|`A2@9  
if (queue[k]>queue[j]) file://不用交换 f_2(`T#  
break; K3iQ/j~aq  
SortUtil.swap(queue,j,k); bC /Ql  
k = j; 8'"=y}]H~  
} tZG l^mA"g  
} N%F4ug@i   
private void fixUp(int k) { suS[P?4  
while (k > 1) { !nsx!M  
int j = k >> 1; %:v<&^oDlm  
if (queue[j]>queue[k]) ?>Ngsp>-P  
break; 2?{'(i ay  
SortUtil.swap(queue,j,k); nTl2F1(sV7  
k = j; e%lxRN"b  
} =4$ErwI_dm  
} PthgxB^  
uBl&{$<  
} l,*5*1lM  
Wu"1M^a  
} g4u 6#.m(  
>=4('  
SortUtil: J5(^VKj  
{- &`@V  
package org.rut.util.algorithm; S=gb y  
O0FUJGuTS  
import org.rut.util.algorithm.support.BubbleSort; wB bCGU  
import org.rut.util.algorithm.support.HeapSort; 3RanAT.nu:  
import org.rut.util.algorithm.support.ImprovedMergeSort; @qpj0i+>*  
import org.rut.util.algorithm.support.ImprovedQuickSort; (:I]v_qEYS  
import org.rut.util.algorithm.support.InsertSort; snWe&-  
import org.rut.util.algorithm.support.MergeSort; 1F_$[iIX]  
import org.rut.util.algorithm.support.QuickSort; \,fa"^8  
import org.rut.util.algorithm.support.SelectionSort; ~yt7L,OQ  
import org.rut.util.algorithm.support.ShellSort; `^] D;RfE  
>(-A"jf  
/** *4e?y  
* @author treeroot \1SC:gN*#  
* @since 2006-2-2 i),bAU!+m  
* @version 1.0 ap8q`a{j^  
*/ 4l7 Ny\J  
public class SortUtil { zn>+ \  
public final static int INSERT = 1; wBvVY3VQ^  
public final static int BUBBLE = 2; =P%&]5ts  
public final static int SELECTION = 3; ;{aGEOP'U  
public final static int SHELL = 4; `U=Jbdc l3  
public final static int QUICK = 5; $H)Q UFyC  
public final static int IMPROVED_QUICK = 6; t.dr<  
public final static int MERGE = 7; |dz"uIrT  
public final static int IMPROVED_MERGE = 8; X 5\xq+Ih  
public final static int HEAP = 9; xKl1DIN[  
/z_]7]  
public static void sort(int[] data) { 'zbvg0T  
sort(data, IMPROVED_QUICK); E#\Oe_eq~N  
} sQJGwZ 7  
private static String[] name={ m8;w7S7,j~  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" |Iwglb!k  
}; |lcp (u*u  
`/Rqt+C  
private static Sort[] impl=new Sort[]{ , /%'""`w  
new InsertSort(), <=V{tl  
new BubbleSort(), `KN>0R2k  
new SelectionSort(), 9|lLce$  
new ShellSort(), WrSc@j&Ycv  
new QuickSort(), KzP{bK5/  
new ImprovedQuickSort(), qDG2rFu&[  
new MergeSort(), T@=C2 1  
new ImprovedMergeSort(), .9J}Z^FD  
new HeapSort() Q`W2\Kod]  
}; 2l O(f+  
^86M 94k  
public static String toString(int algorithm){ f9 \$,7F  
return name[algorithm-1]; YrJUs]A  
} */l;e<E  
aG83@ABx  
public static void sort(int[] data, int algorithm) { "a= Hr4C*r  
impl[algorithm-1].sort(data); "p*'HQ  
} tfN[-3)Z  
@ ?M\[qeF@  
public static interface Sort { Q#G xo  
public void sort(int[] data); i6KB\W2  
} N[e,%heR  
-iS^VzI|I  
public static void swap(int[] data, int i, int j) { *g,ls(r\[  
int temp = data; Uns%6o  
data = data[j]; t^KQ*8clG  
data[j] = temp; . }/8 ]  
} $L 8>Ha}  
} rD~/]y)t  
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