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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。 /]iv9e{uh(  
插入排序: p@>_1A}qh_  
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package org.rut.util.algorithm.support; lhJT&  
gb8nST$r  
import org.rut.util.algorithm.SortUtil; ,Q >u N  
/** I.1zD aP  
* @author treeroot `'.u$IBW  
* @since 2006-2-2 EZE/~$`3   
* @version 1.0 )\'U$  
*/ |"vqM)V$  
public class InsertSort implements SortUtil.Sort{ $w#C;2k]N  
jA<v<oV  
/* (non-Javadoc) mgh,)=2cE(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )m \}ITf  
*/ :Y ~fPke  
public void sort(int[] data) { bgL`FW i3  
int temp; C]\r~f  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _`*x}  
} Y)g<> }F  
} pZ%/;sxYa  
} fQ 'P2$  
vw>O;u.]B  
} ,]42v?  
D />REC^  
冒泡排序: tWdj"n%  
KP -g<Zc  
package org.rut.util.algorithm.support; wT3QS J  
_:?)2NV  
import org.rut.util.algorithm.SortUtil; \y"!`.E7\d  
i~PN(h  
/** -Q<3Q_  
* @author treeroot MjQKcL4%7  
* @since 2006-2-2 Uw)?u$+ P  
* @version 1.0 Dwe_ytjpc  
*/ |wQ|h$|  
public class BubbleSort implements SortUtil.Sort{ +_3> T''_  
.~4%TsBaY  
/* (non-Javadoc) E<>n0",  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M)!8 `]  
*/ i/NY86A  
public void sort(int[] data) { FzXVNUMP  
int temp; K%1'zSAyK  
for(int i=0;i for(int j=data.length-1;j>i;j--){ xT#j-T  
if(data[j] SortUtil.swap(data,j,j-1); "=MRzSke3  
} o{(-jhR  
} (|Y[5O)  
} qXn %c"  
} mrS:|| ,_  
w*eO9k  
} I)U|~N  
"9Sxj  
选择排序: .fk!~8b[Q+  
5YQ4]/h  
package org.rut.util.algorithm.support; X25cU{  
9(dbou  
import org.rut.util.algorithm.SortUtil; 24}r;=U  
LZqx6~]O  
/** wv # 1s3  
* @author treeroot   lCr  
* @since 2006-2-2 hug8Hhf_&  
* @version 1.0 H^Ik FEVs  
*/ 8B"jvrs  
public class SelectionSort implements SortUtil.Sort { 22a$//}E  
WFocA:  
/* (x2I*<7P  
* (non-Javadoc) KA# 4iu{  
* -\:pbR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y?=+A4v  
*/ BI?M/pIm  
public void sort(int[] data) {  P 1X8  
int temp; B5hk]=Ud  
for (int i = 0; i < data.length; i++) { P ^R224R  
int lowIndex = i; Q+*o-  
for (int j = data.length - 1; j > i; j--) { MM"{ehd{^a  
if (data[j] < data[lowIndex]) { _'JKPD[  
lowIndex = j; U-6b><  
} zHw[`"[  
} A_6b 4T  
SortUtil.swap(data,i,lowIndex); M$dDExd~  
} ~T7\lJ{%G  
} ~Aq;g$IJZ  
ZY-W~p1:G  
} ev7Y^   
Sp: `Z1kH  
Shell排序: '9>z4G*Td  
BaIH7JLZ8  
package org.rut.util.algorithm.support; qP-*  
6H\3  
import org.rut.util.algorithm.SortUtil; Q7zg i  
I:Wrwd  
/** Gt{~u^<  
* @author treeroot N%'=el4L  
* @since 2006-2-2 % zHsh  
* @version 1.0 ^P >; %  
*/ :jKD M  
public class ShellSort implements SortUtil.Sort{ UaA6  
f8'D{OP"G  
/* (non-Javadoc) wyeiz7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "l6v[yv  
*/ 73OFFKbsk  
public void sort(int[] data) { E#X(0(A)  
for(int i=data.length/2;i>2;i/=2){ $q.% 4  
for(int j=0;j insertSort(data,j,i); q|0Lu  
} +K,]#$k  
} _@wXh-nc  
insertSort(data,0,1); `O ?61YUQH  
} PB*m D7"  
xhLVLXZ9  
/** tYK 5?d  
* @param data 9E~=/Q=  
* @param j |pqc(B u  
* @param i MX2 Zm  
*/ Cg^=&1 |  
private void insertSort(int[] data, int start, int inc) { $x#0m  
int temp; i;>Yx#  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `Nmw  
} %H Pwu &  
} 2&7:JM~#  
} RuSKJ,T:9  
yU]NgG=z:-  
} ~{lSc/SP|  
w'E&w)Z]  
快速排序: {?yZdL:m)  
aGY R:jR$  
package org.rut.util.algorithm.support; 31v0V:j  
_3v6c  
import org.rut.util.algorithm.SortUtil; NN\>( =  
]/&qv6D*d  
/** Tl>D=Vnhh  
* @author treeroot 5nC#<EE  
* @since 2006-2-2 r&6X|2@  
* @version 1.0 1h_TG.YL9>  
*/ [xW;5j<87  
public class QuickSort implements SortUtil.Sort{ xe9E</M_  
sI>I  
/* (non-Javadoc) =Ji+GJ <,9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lr[U6CJY  
*/ WrJgU&H{  
public void sort(int[] data) { p,#t[K  
quickSort(data,0,data.length-1); g:&YSjO>G  
} &5k$ v^W5  
private void quickSort(int[] data,int i,int j){ 62BT3/~  
int pivotIndex=(i+j)/2; CWF(OMA  
file://swap Ik W 8$>  
SortUtil.swap(data,pivotIndex,j); R|4a9G  
3azyqpwU$  
int k=partition(data,i-1,j,data[j]); I_ O8 9Sgn  
SortUtil.swap(data,k,j); $=&a 0O#  
if((k-i)>1) quickSort(data,i,k-1); Ed">$S  
if((j-k)>1) quickSort(data,k+1,j); %a\!|/;6  
[{R^!Az&b<  
} ^!a4!DGVT  
/** n[|*[II  
* @param data ITpo:"X g  
* @param i B8J_^kd  
* @param j Z9S5rPHEL  
* @return ,v<GSiO  
*/ p~LTu<*S  
private int partition(int[] data, int l, int r,int pivot) { (^),G-]  
do{ w~+C.4=7  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 5t('H`,2  
SortUtil.swap(data,l,r); K+WbxovXU  
} 0Ncx':]5  
while(l SortUtil.swap(data,l,r); [2~^~K  
return l; >]/RlW[  
} ,$4f#)  
$G UCVxs  
} 10gh4,z[  
1:Sq?=&  
改进后的快速排序: p"'knZ G  
V= wWY*C  
package org.rut.util.algorithm.support; MP LgE.n  
0R21"]L_M  
import org.rut.util.algorithm.SortUtil; P0 4Q_A  
+Oxw?`I$  
/** 0pfgE=9  
* @author treeroot e9\eh? bPU  
* @since 2006-2-2 Cf~ vT"  
* @version 1.0 . .5s 2  
*/ ]cmq  
public class ImprovedQuickSort implements SortUtil.Sort { :abpht  
a62'\wF>D  
private static int MAX_STACK_SIZE=4096; w %2|Po5  
private static int THRESHOLD=10; z JBcz,  
/* (non-Javadoc) H6.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  k00&+C  
*/ \Bvy~UeE)>  
public void sort(int[] data) { O)FkpZc@9c  
int[] stack=new int[MAX_STACK_SIZE]; Zws[C  
oR@emYL  
int top=-1; bxc!x>)  
int pivot; H~1o^ gU  
int pivotIndex,l,r; 8 *Y(wqH  
A [hvT\X  
stack[++top]=0; ^D]y<@01  
stack[++top]=data.length-1; "KHe6otmi_  
^1\[hyZ!  
while(top>0){ 3vc2t6S%*  
int j=stack[top--]; KvvG H-]  
int i=stack[top--]; IM(=j  
Qd"R@+i  
pivotIndex=(i+j)/2; Q2LAXTF]y  
pivot=data[pivotIndex]; $5r1Si)  
E%&E<<nhZ  
SortUtil.swap(data,pivotIndex,j); CBu$8]9=  
Aq*,cOF+  
file://partition +ab#2~,)  
l=i-1; KB`">zq$u  
r=j; b8O }XB  
do{ vO 3-B   
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 8h{;*Wr-  
SortUtil.swap(data,l,r); b/g~;| <  
} 8eDKN9kq  
while(l SortUtil.swap(data,l,r); Y{`hRz`  
SortUtil.swap(data,l,j); # n\|Q\W  
/zTx+U.\I  
if((l-i)>THRESHOLD){ btDPP k'  
stack[++top]=i; _h1:{hF  
stack[++top]=l-1; |Qz"Z<sNYw  
} Sd?+j;/"  
if((j-l)>THRESHOLD){ (jtkY_  
stack[++top]=l+1; FV>xAU$  
stack[++top]=j; G_5E#{u  
} NVG`XL  
|n %<p  
} v>' mW  
file://new InsertSort().sort(data); 1g1gu=|Q  
insertSort(data); ?{KC@c*c  
} BDc "0XH  
/** 1IeB_t  
* @param data 7p+uHm  
*/ 9 ?(P?H  
private void insertSort(int[] data) {  |7wiwdD"  
int temp; od`:w[2\  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); h@D</2>  
} 2@+ MT z  
} I3D#wXW  
} m9li%p  
("rIz8b  
} Fwfe5`9'  
jY8u1z  
归并排序:  0ZpWfL  
o](nK5?  
package org.rut.util.algorithm.support; K$Yc!4M  
*N?y<U  
import org.rut.util.algorithm.SortUtil; -E>se8%"  
K)n0?Q_>  
/** #^;^_  
* @author treeroot hXM2B2[  
* @since 2006-2-2 :>GT<PPD;  
* @version 1.0 "K$ y(}C  
*/ o]@g%_3X  
public class MergeSort implements SortUtil.Sort{ :fE*fU@  
Ea2&7  
/* (non-Javadoc) *|Fl&`2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KqT~MPl  
*/ ne\N1`AU  
public void sort(int[] data) { ?FRQ!R  
int[] temp=new int[data.length]; 2\1\Jn#q  
mergeSort(data,temp,0,data.length-1); ~*Ir\wE  
} dk9nhS+faJ  
R WU,v{I9  
private void mergeSort(int[] data,int[] temp,int l,int r){ ALY% h!L  
int mid=(l+r)/2; p; ZEz<M  
if(l==r) return ; w_ po47S4  
mergeSort(data,temp,l,mid); JI}p{ yI  
mergeSort(data,temp,mid+1,r); R(sa.Q\D4  
for(int i=l;i<=r;i++){ 3tTz$$-#  
temp=data;  p3r1lUw  
} I NE,/a=  
int i1=l; E~|`Q6&Y  
int i2=mid+1; vDAv/l9  
for(int cur=l;cur<=r;cur++){ 4c_F>Jw[  
if(i1==mid+1) _\Cd.  
data[cur]=temp[i2++]; UW[{Y|oE  
else if(i2>r) ]Zf@NY  
data[cur]=temp[i1++]; 2)^[SpZ  
else if(temp[i1] data[cur]=temp[i1++]; !jDqRXi(  
else 'k9hzk(*  
data[cur]=temp[i2++]; Z0e+CEzq  
} S hM}w/4  
} _(\\>'1q!  
sE8.,\  
} "lf_`4  
r4xq%hy  
改进后的归并排序: ab 1\nzpd  
/z4xq'<  
package org.rut.util.algorithm.support; g/q$;cB  
;v6e2NacM'  
import org.rut.util.algorithm.SortUtil; Te#wU e-|  
1LjYV  
/** +Hb6j02#  
* @author treeroot EtH)E)  
* @since 2006-2-2 NwG&uc+Q  
* @version 1.0 B!le=V,@,  
*/ ~^"cq S(  
public class ImprovedMergeSort implements SortUtil.Sort { .6 E7 R  
!+M H?A  
private static final int THRESHOLD = 10; t@/r1u|iq  
,9#G/nF  
/* g-%uw[pf  
* (non-Javadoc) V]PTAhc  
* *qG=p`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "7 )F";_(^  
*/ C_#0Y_O  
public void sort(int[] data) { ^D B0C  
int[] temp=new int[data.length]; $}k"wI[  
mergeSort(data,temp,0,data.length-1); |U^ ff^]  
} ){>;eky  
X5U!25d]  
private void mergeSort(int[] data, int[] temp, int l, int r) { KX<RD|=  
int i, j, k; $vy.BY Fm  
int mid = (l + r) / 2; D 2!ww{t  
if (l == r) {djOU 9]  
return; J&a887  
if ((mid - l) >= THRESHOLD) q{7s.m >  
mergeSort(data, temp, l, mid); 66'TdF]"  
else ]hvB-R16f  
insertSort(data, l, mid - l + 1); o-O/MS   
if ((r - mid) > THRESHOLD) 'KQu z)-  
mergeSort(data, temp, mid + 1, r); &9s6p6 eb  
else T"d]QYJS  
insertSort(data, mid + 1, r - mid); wOi>i`D&  
Gcs+@7!b  
for (i = l; i <= mid; i++) { }UGPEf\  
temp = data; !Q7   
} ]K9 x<@!  
for (j = 1; j <= r - mid; j++) { Z^fF^3x  
temp[r - j + 1] = data[j + mid]; e('c 9 Y  
} 6!"15dPN  
int a = temp[l]; L8j,?u#  
int b = temp[r]; ao-C9|2>NU  
for (i = l, j = r, k = l; k <= r; k++) { s\jLIrG8  
if (a < b) { &6\rKOsn  
data[k] = temp[i++]; CYrL|{M]  
a = temp; t'Q48QAb?  
} else { ;JmD(T7{  
data[k] = temp[j--]; ;%jt;Xv9  
b = temp[j]; [#Yyw8V#<  
} 4_"ZSVq]#  
} u%h<5WNh<  
} Zh(f2urKV  
_?r+SRFn  
/** So8P 8TCK  
* @param data ^2??]R&Q  
* @param l 1Xs! ew)>  
* @param i ,5\n%J:  
*/ 3?geJlD4  
private void insertSort(int[] data, int start, int len) { k{b ba=<  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); !c&^b@ yw  
} 'Aqmf+Mm  
} b]Y,& 8}[+  
} b R6bS7$  
} cu"%>>,,  
y1'/@A1  
堆排序: >'T%=50YH  
Z~nl{P#  
package org.rut.util.algorithm.support; .6"7Xxe]<  
9qW,I|G  
import org.rut.util.algorithm.SortUtil; g/@CESfm'  
)b7mzDp(  
/** v8X&H  
* @author treeroot )} #r"!  
* @since 2006-2-2 }"8_$VDcz  
* @version 1.0 M`<D Z<:<  
*/ j>T''T f  
public class HeapSort implements SortUtil.Sort{ u<8Q[_E&  
.Sn1YAhE  
/* (non-Javadoc) b?^n'0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QCo^#-   
*/ Gs6 #aL}]R  
public void sort(int[] data) { <#Lw.;(U;k  
MaxHeap h=new MaxHeap(); vuZ<'?Nm  
h.init(data); at*=#?M1?  
for(int i=0;i h.remove(); 6vA5L_  
System.arraycopy(h.queue,1,data,0,data.length); cm3Y!p{p"  
} CQ`(,F3(  
s`B'vyoaa  
private static class MaxHeap{ @CmxH(-i-  
J$Q-1fjj  
void init(int[] data){ }rE|\p>  
this.queue=new int[data.length+1]; cTnbI4S;  
for(int i=0;i queue[++size]=data; ,54<U~Lg:  
fixUp(size); O>GP>U?]  
} MH?B .2  
} T42g4j/l~  
w(j9[  
private int size=0; Vk (bU=w  
^sKXn:)  
private int[] queue; >DRs(~|V#  
@_Zx'mTI  
public int get() { B<LavX>F  
return queue[1]; ["}A#cO652  
} fq|2E&&v  
*eP4dGe&  
public void remove() { | #Pc e  
SortUtil.swap(queue,1,size--); "{_"Nj H  
fixDown(1); FQFENq''B  
} v~\45eEA  
file://fixdown I[UA' ~f  
private void fixDown(int k) { \bOjb\ w$  
int j; ?/( K7>`  
while ((j = k << 1) <= size) { p L@zZK0  
if (j < size %26amp;%26amp; queue[j] j++; hYn'uL^~[  
if (queue[k]>queue[j]) file://不用交换 kPH^X}O$  
break; \6hL W_q1  
SortUtil.swap(queue,j,k); 3 ms/v:\  
k = j; j6vZ{Fx;w  
} (NdgF+'=  
} _,FoXf7  
private void fixUp(int k) { noA\5&hqW  
while (k > 1) { 2.D!4+&  
int j = k >> 1; \bic.0-  
if (queue[j]>queue[k]) dV{Hn {(  
break; d~jtWd|?  
SortUtil.swap(queue,j,k); ?(q*U!=  
k = j; =h::VB}Lv  
} OLNn3 J  
} l;*lPRoW,  
]B3FTqR{i  
} _]UDmn[C  
m->%8{L  
} 93IOG{OAY  
xzl4v=7  
SortUtil: LGROEn<*d  
d._gH#&v  
package org.rut.util.algorithm; BhW]Oq&  
1qj%a%R  
import org.rut.util.algorithm.support.BubbleSort; &JhIn%=-  
import org.rut.util.algorithm.support.HeapSort; hcd>A vC8  
import org.rut.util.algorithm.support.ImprovedMergeSort; o+-Ge J  
import org.rut.util.algorithm.support.ImprovedQuickSort; udD* E~1q  
import org.rut.util.algorithm.support.InsertSort; 1LE^dS^V  
import org.rut.util.algorithm.support.MergeSort; N~}v:rK>g  
import org.rut.util.algorithm.support.QuickSort; h2|vB+W-  
import org.rut.util.algorithm.support.SelectionSort; Da8$Is;n  
import org.rut.util.algorithm.support.ShellSort; i %hn  
{<}I9D5  
/** tw4am.o1]  
* @author treeroot |:=b9kv  
* @since 2006-2-2 )fd-IYi-3  
* @version 1.0 ?Y0$X>nm  
*/ )_ b@~fC  
public class SortUtil { x-V' 0-#U>  
public final static int INSERT = 1; /cL9 ?k;o  
public final static int BUBBLE = 2; F*4Qa  
public final static int SELECTION = 3;  _WDBG  
public final static int SHELL = 4; =o{: -EKQF  
public final static int QUICK = 5; @0UwI%.  
public final static int IMPROVED_QUICK = 6; Ife,h s  
public final static int MERGE = 7; Sa[EnC  
public final static int IMPROVED_MERGE = 8; 8 g# Y  
public final static int HEAP = 9; mU?&\w=v$  
v;bM.OL  
public static void sort(int[] data) { vN0L( B  
sort(data, IMPROVED_QUICK); .}$`+h8W T  
} nXM9Px!  
private static String[] name={ 2yJ7]+Jd7Y  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" dS3>q<J*a  
}; lk*0c {_L  
'#McY'.D T  
private static Sort[] impl=new Sort[]{ !X\sQNp  
new InsertSort(), [L*[j.r7[  
new BubbleSort(), <nOuyGIZ  
new SelectionSort(), (EOec5qXU  
new ShellSort(), Bt*&L[&57  
new QuickSort(), Sr ztTfY  
new ImprovedQuickSort(), ,<Grd5em.  
new MergeSort(), uGP[l`f|FQ  
new ImprovedMergeSort(), ]} 5I>l  
new HeapSort() fz<|+(_>J  
}; (s V]UGrZ  
YoV^xl6g  
public static String toString(int algorithm){ RR~sEUCo{  
return name[algorithm-1];  r21?c|IP  
} Y'<uZl^aX  
E !Oz|q  
public static void sort(int[] data, int algorithm) { {*M>X}voS  
impl[algorithm-1].sort(data); DJ1XN pm  
} 'uP'P#  
.\ ;l-U  
public static interface Sort { @b ::6n/u  
public void sort(int[] data); ]b0zkoD9<  
} z`86-Ov  
r%g <h T 8  
public static void swap(int[] data, int i, int j) { K)Df}fVOc  
int temp = data; vWqyZ-p,q  
data = data[j]; (B>yaM#5  
data[j] = temp; oglXW8  
} VL_)]LR*)  
} 'WKu0Yi^'  
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