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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。 3P N<J  
插入排序: V\vt!wBcB  
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package org.rut.util.algorithm.support; =~15q=XY0  
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import org.rut.util.algorithm.SortUtil; RR |Z,  
/** 9=TjSRS  
* @author treeroot Lk#8G>U  
* @since 2006-2-2 ) G a5c  
* @version 1.0 x5jd2wS Dx  
*/ sQwRlx  
public class InsertSort implements SortUtil.Sort{ Z4KYVHD,  
lsq\CavbM  
/* (non-Javadoc) Y#7sDd!N|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #\1)Tu%-  
*/ > >%m,F[  
public void sort(int[] data) { bS7%%8C  
int temp; 3e,"B S)+  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /3#)  
} V96:+r  
} Bc&Y[u-n  
} jJbS{1z  
'8Wu9 phT  
} @KJ~M3d0l  
o&-D[|E|  
冒泡排序: pd^"MG  
q!f'?yFYK  
package org.rut.util.algorithm.support; ;T hn C>U  
Ndmki 7A  
import org.rut.util.algorithm.SortUtil; ?hBjq  
^J~5k,7jX  
/** !KC4[;Y  
* @author treeroot N.'-9hv  
* @since 2006-2-2 ze"`5z26|  
* @version 1.0 R/EpfYOX  
*/ ;suY  
public class BubbleSort implements SortUtil.Sort{ q8 SHFKE  
?'I-_9u  
/* (non-Javadoc) !:2_y'hA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fD3>g{  
*/ F81Kxcs  
public void sort(int[] data) { pgd9_'[5  
int temp; =j^>sg]  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 2=,O)g  
if(data[j] SortUtil.swap(data,j,j-1); F e1^9ja  
} hm, H3pN  
} <I 0EjV  
} <g$bM;6%  
} thLx!t  
z?<Xx?Kk  
} a! gj_  
&0x;60b  
选择排序: VV-%AS6;  
HC!5AJ&+}v  
package org.rut.util.algorithm.support; y/Ui6D  
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import org.rut.util.algorithm.SortUtil; @+>t]jyz  
s{uSU1lQn  
/** b?,''t  
* @author treeroot JuDadIrd{  
* @since 2006-2-2 X"!tx  
* @version 1.0 EG!Nsb^,  
*/ "M}3T?0 O  
public class SelectionSort implements SortUtil.Sort { tS3!cO\  
OE/r0C<&  
/* ,5& Rra/  
* (non-Javadoc) wd*V,ZN7  
* JD)wxoeg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @Zzg^1Ilpu  
*/ "Wg5eML 0  
public void sort(int[] data) { o*5b]XWw  
int temp; 7Vo[zo  
for (int i = 0; i < data.length; i++) {  Il]p >B  
int lowIndex = i; 4Q(w D  
for (int j = data.length - 1; j > i; j--) { \*mKctpz]6  
if (data[j] < data[lowIndex]) { jO.c>C[?  
lowIndex = j; /_Fi4wZ  
} /u~L3Cp(  
} ~,m5dP#[bV  
SortUtil.swap(data,i,lowIndex); Um!LF"Z  
} D\Fu4Eg  
} t vp kc;  
Dc9Fb^]QOG  
} W~& QcSWqD  
R-6km Tex>  
Shell排序: QE6L_\l  
3Vk<hBw2  
package org.rut.util.algorithm.support; awgS5We|  
vhrURY.  
import org.rut.util.algorithm.SortUtil; =>*9"k%m  
LG vPy  
/** ^f] 9^U{  
* @author treeroot _^h?JTU^  
* @since 2006-2-2 wV q4DE  
* @version 1.0 QSx4M  
*/ %GigRA@no  
public class ShellSort implements SortUtil.Sort{ $r1{N h  
/6FPiASbS  
/* (non-Javadoc) X\|h:ce  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .*Axr\x3  
*/ Of;$ VK'  
public void sort(int[] data) { r)gtx!bx  
for(int i=data.length/2;i>2;i/=2){ COL_c<\  
for(int j=0;j insertSort(data,j,i); `08}y*E  
} /h,-J8[  
} 2NF#mWZ(s  
insertSort(data,0,1); es1'z.UJ  
} -+n? Q;  
7#sb },J{  
/** ^ux"<?  
* @param data OSkBBo]~z  
* @param j gmCB4MO  
* @param i V4. }wz_Y  
*/ \eCQL(_  
private void insertSort(int[] data, int start, int inc) { Wdp4'rB  
int temp; ]4[^S.T=  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); #{~3bgY  
} gcF V$  
} .~%,eF;l$  
} *40Z }1ng  
15cgmZsS  
} xHaoSs*C9  
i>PKE.  
快速排序: }-PV%MNud  
$ItPUYi";  
package org.rut.util.algorithm.support; oN[# C>#(  
#1[Q?e4,0  
import org.rut.util.algorithm.SortUtil; M(.]?+  
;f[@zo><r  
/** H8$";T(I  
* @author treeroot |"Fm<  
* @since 2006-2-2 QD^"cPC)mM  
* @version 1.0 t_iZ\_8  
*/ 7VA6J-T  
public class QuickSort implements SortUtil.Sort{ rm!.J0 X  
^"4u1  
/* (non-Javadoc) HE*P0Y f=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fj[tm  
*/ ZowPga  
public void sort(int[] data) { A5YS "i  
quickSort(data,0,data.length-1); <Q?_],ip  
} .GuZV'  
private void quickSort(int[] data,int i,int j){ g&L $5  
int pivotIndex=(i+j)/2; }\d3   
file://swap $F~hL?"?  
SortUtil.swap(data,pivotIndex,j); Ffr6P }I  
n$jf($*  
int k=partition(data,i-1,j,data[j]); V2*m/JyeB  
SortUtil.swap(data,k,j); 5YgUk[J  
if((k-i)>1) quickSort(data,i,k-1); 0u8(*?  
if((j-k)>1) quickSort(data,k+1,j); 5U.,iQ(d  
6N'HXL UlQ  
} }9>X M  
/** &>z}u&oF  
* @param data Bk8 '*O/)  
* @param i ;/ao3Q   
* @param j 1a;&&!X  
* @return zNQ|G1o  
*/ <P<^,aC/j  
private int partition(int[] data, int l, int r,int pivot) { E3E$_<^  
do{ Lz;E/a}s  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); g<PdiVp+  
SortUtil.swap(data,l,r); Z.mnD+{  
} *,oZ]!   
while(l SortUtil.swap(data,l,r); ;@I}eZ,f$  
return l; 2s8(r8AI  
} 0%5x&vx'S  
jY5BVTWnV  
} M ^~  
l%9nA.M'  
改进后的快速排序: b}jLI_R{  
U-GV^j  
package org.rut.util.algorithm.support; oxL4* bqZ  
e3{L%rQE  
import org.rut.util.algorithm.SortUtil; _Rnq5y  
Ab f=b<bu  
/** a3oSSkT  
* @author treeroot m&Lc."  
* @since 2006-2-2  kn|z  
* @version 1.0 rFR2c?j8  
*/ M)!:o/!cS  
public class ImprovedQuickSort implements SortUtil.Sort { s\ i.pd:Q  
Ue0Q| h  
private static int MAX_STACK_SIZE=4096; 7Om)uUjU4  
private static int THRESHOLD=10; P;!4 VK  
/* (non-Javadoc) QprzlxB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <jRs/?1R  
*/ Gq r(.  
public void sort(int[] data) { ]qk/V:H:  
int[] stack=new int[MAX_STACK_SIZE]; 44kb  
UT7".1H  
int top=-1; =m= utd8  
int pivot; Gg9NG`e6I  
int pivotIndex,l,r; 7<VfE`Q3  
~+Da`Wp  
stack[++top]=0; wuTCdBu6hU  
stack[++top]=data.length-1; iiZK^/P$  
Q{Lsr,  
while(top>0){ IRQ3>4hI  
int j=stack[top--]; u3H2\<  
int i=stack[top--]; `?L-{VtM3*  
VClw!bm  
pivotIndex=(i+j)/2; dc0Ro,  
pivot=data[pivotIndex]; RU'DUf  
6axm H~_  
SortUtil.swap(data,pivotIndex,j); C&ivjFf  
v`$9;9  
file://partition WtTwY8HC  
l=i-1; P'6(HT>F?  
r=j; !S',V&Yb  
do{ #UH7z 4u  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ^ok;<fJ  
SortUtil.swap(data,l,r); (N\Zz*PLz  
} `'`T'+0  
while(l SortUtil.swap(data,l,r); WwDxZ>9jw  
SortUtil.swap(data,l,j); S Yvifgp  
V F'! OPN  
if((l-i)>THRESHOLD){ hOx">yki  
stack[++top]=i; 3f :I<S7  
stack[++top]=l-1; U;:,$]+  
} +xlxhF  
if((j-l)>THRESHOLD){ ~4iI G}Y<  
stack[++top]=l+1; Th%1eLQ  
stack[++top]=j; Tl3{)(ezx  
} 0R2 AhA#  
0Fh*8a}?b  
} 5!*5mtI  
file://new InsertSort().sort(data); z,oqYU\:  
insertSort(data); wQ,RZO3  
} "ppT<8Qi'  
/** xW,(d5RtZ  
* @param data A2"xCJ0`  
*/ >cD+&h34  
private void insertSort(int[] data) { c])b?dJ*  
int temp; r\"O8\  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); RfwTqw4@  
} sy` : wp  
} #7U,kTj9  
} (K+TqJw  
MNiu5-g5  
} sHrpBm&O4  
(;a O%  
归并排序: J7.bFW'  
1h+!<c q  
package org.rut.util.algorithm.support; GfU+'k;9  
G1~|$X@@  
import org.rut.util.algorithm.SortUtil; k[ Iwxl;/  
8Db~OYVJG  
/** bhSpSul  
* @author treeroot z[S,hD\w  
* @since 2006-2-2 \wNn c"  
* @version 1.0 t{>66jm\R  
*/ ZjEO$ ts=@  
public class MergeSort implements SortUtil.Sort{ 9VN@M  
<E BgHD)  
/* (non-Javadoc) Prhq ~oI4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4T9hT~cT7  
*/ %~ecrQ;  
public void sort(int[] data) { z>i D  
int[] temp=new int[data.length]; x[}e1sXXs  
mergeSort(data,temp,0,data.length-1); C)z[Blt  
} &u"*vG (U[  
vO{ijHKE  
private void mergeSort(int[] data,int[] temp,int l,int r){ ?/)5U}*M0T  
int mid=(l+r)/2; =O)JPo&iwY  
if(l==r) return ; ok\+$+ $ju  
mergeSort(data,temp,l,mid); GKY:"q&h  
mergeSort(data,temp,mid+1,r); nHKEtKDd  
for(int i=l;i<=r;i++){ #fGb M!3p  
temp=data; 7"xd'\c@  
} _ |TE )h  
int i1=l; n/?5[O-D]  
int i2=mid+1; 5.[{PJ]bq  
for(int cur=l;cur<=r;cur++){ 9$Mi/eLG2N  
if(i1==mid+1) dY\"'LtF  
data[cur]=temp[i2++]; e|Sg?ocR  
else if(i2>r) d0 V>;Q  
data[cur]=temp[i1++]; XU9=@y+|v  
else if(temp[i1] data[cur]=temp[i1++]; \Zf&&7v  
else Ip4NkUI3T  
data[cur]=temp[i2++]; sp**Sg)  
} g@Ni!U"_c  
} ITc/aX  
aG}9Z8D  
} h0.Fstf]  
;6b#I$-J-  
改进后的归并排序: @gi Y  
+H&_Z38n  
package org.rut.util.algorithm.support; iW"L!t#\|  
1wc -v@E  
import org.rut.util.algorithm.SortUtil; -'PpY302  
;@d %<yMf@  
/** XFu@XUk!K  
* @author treeroot N0vd>b  
* @since 2006-2-2 xk|$Oa  
* @version 1.0 ~#a1]w  
*/ @IiT8B  
public class ImprovedMergeSort implements SortUtil.Sort { HnP;1Gi  
RaU.yCYyu  
private static final int THRESHOLD = 10; dWqFP  
4(aesZ8h  
/* 7-o=E=  
* (non-Javadoc) \aZ(@eF@@Q  
* 0='DDy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) : l>Ue&  
*/ CY>NU  
public void sort(int[] data) { rIb[gm)Rk  
int[] temp=new int[data.length]; uCu,'F,6Y  
mergeSort(data,temp,0,data.length-1); 3(5RUI-  
} 2/7=@>|  
 +rT(  
private void mergeSort(int[] data, int[] temp, int l, int r) { <go~WpA|r  
int i, j, k; qz0v1057#  
int mid = (l + r) / 2; 4[J3HLQ  
if (l == r) ,#wVqBEk  
return; L|q<Bpz  
if ((mid - l) >= THRESHOLD) #h3+T*5} 6  
mergeSort(data, temp, l, mid); 4{vd6T}V!  
else \PLV]%3,  
insertSort(data, l, mid - l + 1); 34oL l#q*  
if ((r - mid) > THRESHOLD) <Y orQ>  
mergeSort(data, temp, mid + 1, r); 44W3U~1  
else <Y#R]gf1  
insertSort(data, mid + 1, r - mid); !GIsmqVY  
HQ s)T  
for (i = l; i <= mid; i++) { Z@[,"{Sn  
temp = data;  Nr[Rp  
} \OU+Kl<  
for (j = 1; j <= r - mid; j++) { YjX=@  
temp[r - j + 1] = data[j + mid]; O h" ^  
} i9xv`Ev=R  
int a = temp[l]; W1@;94Sb~  
int b = temp[r]; X#3<hN*v  
for (i = l, j = r, k = l; k <= r; k++) { `U g.c  
if (a < b) { 6#KI? 6  
data[k] = temp[i++]; Dz50,*}J  
a = temp; s^oNQ}  
} else { &!a 2%%1#N  
data[k] = temp[j--]; WsV3>=@f  
b = temp[j]; ) ,hj7  
} \Zv =?\  
} dI !/:x  
} :7ngVc  
# 0!IUSa  
/** "B}08C,?  
* @param data O0{  
* @param l U]D.z}0  
* @param i K%}I}8M  
*/ Q*C4  q`  
private void insertSort(int[] data, int start, int len) { zrew:5*uZ  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ziycyf.d  
} Uu X"AFy~\  
} e 1loI8  
} '&QT}B  
} X}-H=1T?  
f`,Hr?H  
堆排序: .O#lab`:2  
YgiGI <U  
package org.rut.util.algorithm.support; 8@aS9 th$  
GF!{SO4  
import org.rut.util.algorithm.SortUtil; 12PE{Mut  
lDU:EJ&DHE  
/** !5OMAWNU@  
* @author treeroot |I}+!DDuv  
* @since 2006-2-2 SU'1#$69F  
* @version 1.0 m[{&xF|_  
*/ DP_Pqn8p&M  
public class HeapSort implements SortUtil.Sort{ iFCH$!  
I|IlFu?O=  
/* (non-Javadoc) 4)iEj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ijqdZ+  
*/ &{/>Sv!6#  
public void sort(int[] data) { i`aG  
MaxHeap h=new MaxHeap(); i 9tJHeSm  
h.init(data); wDhcHB  
for(int i=0;i h.remove(); 'h^DI`  
System.arraycopy(h.queue,1,data,0,data.length); W>s'4C`  
} C9H11g7{  
<M OL{jan  
private static class MaxHeap{ ,;P`Mf'YC  
\u _v7g  
void init(int[] data){ 4<g72| y  
this.queue=new int[data.length+1]; >.hGoT!_k  
for(int i=0;i queue[++size]=data; HCIF9{o1j>  
fixUp(size); +Jka:]MW!  
} px>> ]>ZMH  
} U9o*6`"o  
Hs}"A,V  
private int size=0; ]A]E)*  
70 UgKE  
private int[] queue; !(_xu{(DL  
K2rS[Kdfaq  
public int get() { z83:a)U  
return queue[1]; 8}oDRN!J  
} :ZfUjqRE  
/Tf*d>Yh;  
public void remove() { :_\!t45  
SortUtil.swap(queue,1,size--); N^yO- xk  
fixDown(1); b#;N!VX  
} To8v#.i  
file://fixdown ;]ShC\1  
private void fixDown(int k) { ;~:Ryl M  
int j; q AVfbcb  
while ((j = k << 1) <= size) { .(dmuV9  
if (j < size %26amp;%26amp; queue[j] j++; _d0-%B 9m  
if (queue[k]>queue[j]) file://不用交换 dezL{:Ya  
break; Vc52s+7=8  
SortUtil.swap(queue,j,k); KO]?>>5S6  
k = j; 7x7r!rSe,  
} txfwLqx  
} Pv-V7`{  
private void fixUp(int k) { lzy$.H"W  
while (k > 1) { DET!br'z5  
int j = k >> 1; VtzmY  
if (queue[j]>queue[k]) y5Wqu9C\Io  
break; 0"<;You  
SortUtil.swap(queue,j,k); %c&A h  
k = j; )|h;J4V  
} <,X+`m&  
} ?tC}M;~  
1yaIV+_y/  
} ~\:j9cC  
Bx}0E  
} &8_f'+i0  
d+m6-4[_k  
SortUtil: VVQ74b  
rI^~9Rz  
package org.rut.util.algorithm; N]s7/s  
>,"D9!  
import org.rut.util.algorithm.support.BubbleSort; !!+/Wgd:6  
import org.rut.util.algorithm.support.HeapSort; 4'{hI;&a&  
import org.rut.util.algorithm.support.ImprovedMergeSort; Fy _<Ui  
import org.rut.util.algorithm.support.ImprovedQuickSort; itC *Z6^  
import org.rut.util.algorithm.support.InsertSort; %I|+_ z&x  
import org.rut.util.algorithm.support.MergeSort; vBnKu  
import org.rut.util.algorithm.support.QuickSort; IQlw 914  
import org.rut.util.algorithm.support.SelectionSort; 3dxnh,]&@  
import org.rut.util.algorithm.support.ShellSort; yrE,,N%I  
w-'D*dOi  
/** _5U%'\5s  
* @author treeroot Rd vPsv} D  
* @since 2006-2-2 ycl>git]  
* @version 1.0 ] EVe@  
*/ o3i,B),K  
public class SortUtil { Xc9p;B>^Ts  
public final static int INSERT = 1; <(bCz>o|  
public final static int BUBBLE = 2; R%)2(\  
public final static int SELECTION = 3; \o62OfF!  
public final static int SHELL = 4; FU (}=5n  
public final static int QUICK = 5; zhA',p@K?_  
public final static int IMPROVED_QUICK = 6; ^iV`g?z  
public final static int MERGE = 7; d#vS E.&  
public final static int IMPROVED_MERGE = 8; 94h_t@Q/1  
public final static int HEAP = 9; 0x]OF8=J  
vNK`Y|u@  
public static void sort(int[] data) { ezg^5o;  
sort(data, IMPROVED_QUICK); p'Y&Z?8  
} '?`@7Eol  
private static String[] name={ 0V>ESyae5  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" BDm88< ]  
}; PzMlua  
u8<&F`7j  
private static Sort[] impl=new Sort[]{ ;* wT,2;  
new InsertSort(), <*A|pns  
new BubbleSort(), /jjW/ lr  
new SelectionSort(), Ere?d~8  
new ShellSort(), o8};e  
new QuickSort(), 1Es*=zg  
new ImprovedQuickSort(), Y0Hq+7x  
new MergeSort(), }DDVGs[  
new ImprovedMergeSort(), r sX$fU8  
new HeapSort() TXd5v#_vo  
}; oeu|/\+HW  
daA47`+d  
public static String toString(int algorithm){ P|e:+G7  
return name[algorithm-1]; }&Wp3EWw  
} |8DH4*y!  
{z5V{M(|w3  
public static void sort(int[] data, int algorithm) { vgh ^fa!/  
impl[algorithm-1].sort(data); j.=UI-&m  
} |<j,Tr1[  
08Pt(kzNA  
public static interface Sort { ,Lt~u_lve  
public void sort(int[] data); .g/ARwM}  
} []A"]p  
]k ::J>84  
public static void swap(int[] data, int i, int j) { YM #  
int temp = data; Qq,i  
data = data[j]; 6?1s`{yy  
data[j] = temp; l)tTg+:  
} 9*}iBs  
} h*;g0QBkl  
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