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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。 p#w8$Qjp  
插入排序: Hd;NvNS  
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package org.rut.util.algorithm.support; Tv'1IE  
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import org.rut.util.algorithm.SortUtil; 6X9$T11Vc  
/** An#[ +?  
* @author treeroot Y?1T XsvF  
* @since 2006-2-2 uSYI X  
* @version 1.0 Y*pXbztP  
*/ V?*fl^f  
public class InsertSort implements SortUtil.Sort{ v+xrn z  
8J&9}@y  
/* (non-Javadoc) z[ ;n2o|s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +C;;4s)  
*/ [4C_iaE  
public void sort(int[] data) { 2k=|p@V n~  
int temp; %pWJ2J@  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }R}M>^(R4  
} >0:3CpO*  
} O[$X36z  
} n~ $S  
N:Q.6_%^  
} 0sSBwG  
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冒泡排序: ~sn3_6{  
NG3:=  
package org.rut.util.algorithm.support; :j3^p8]  
J ?aJa  
import org.rut.util.algorithm.SortUtil; > .}G[C  
rtJ@D2Hj^  
/** ]U~{?K'g@j  
* @author treeroot e`][zx  
* @since 2006-2-2 4J`-&05O  
* @version 1.0 K)x6F 15r  
*/ H@zZ[  
public class BubbleSort implements SortUtil.Sort{ % +  
|UlR+'rl  
/* (non-Javadoc) + AjV0#n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c99|+i50  
*/ gO*Gf2AG  
public void sort(int[] data) {  :Kyr}-  
int temp; _}j>  
for(int i=0;i for(int j=data.length-1;j>i;j--){ =>>Dnp  
if(data[j] SortUtil.swap(data,j,j-1); f#AuZ]h  
} :T PG~`k(  
} #p;<X|Hc}8  
} 2=fLb7  
} LjGLi>kI~  
GCQOjqiR  
} jQz^)8)B  
RF6]_-  
选择排序: OAo03KW  
`ba<eT':  
package org.rut.util.algorithm.support; >o p/<?<  
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import org.rut.util.algorithm.SortUtil; tMU10=d  
@ >'Wiq!  
/** S9[Up}`  
* @author treeroot s$9ow<oi]  
* @since 2006-2-2 R.* k7-(;  
* @version 1.0 K; hP0J  
*/ }Dcpe M?  
public class SelectionSort implements SortUtil.Sort { ML$#&Z@ *7  
j&.JAQ*2;  
/* gBI?dw  
* (non-Javadoc) N0D5N(kH%  
* N{RHbSa(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nWYfe-zQxg  
*/ cbou1Ei   
public void sort(int[] data) { uVZm9Sp  
int temp; "/^kFsvp  
for (int i = 0; i < data.length; i++) { s#0m  
int lowIndex = i; T|oDJ]\J  
for (int j = data.length - 1; j > i; j--) { /YwwG;1  
if (data[j] < data[lowIndex]) { Z^mIGy}  
lowIndex = j; %^I 7=  
} R. ryy  
} P:'y}a-  
SortUtil.swap(data,i,lowIndex); RM2feWm  
} 3!*` hQ;s  
} \sVzBHy d  
EG=U](8T  
} c&RiUU7  
R 'mlKe x  
Shell排序: W^:g_  
@ *T8>  
package org.rut.util.algorithm.support; 3e;K5qSeo/  
xU.Ymq& 5  
import org.rut.util.algorithm.SortUtil; aeLIs SEx  
S +73 /Vs  
/** bw#\"uJ  
* @author treeroot }LIf]Y K  
* @since 2006-2-2 9% P$e=Ui#  
* @version 1.0 ONcS,oHW  
*/ -Vg0J6x  
public class ShellSort implements SortUtil.Sort{ kmfz.:j{  
=>TXo@rVN  
/* (non-Javadoc) sh<JB`^$(?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C}XB%:5H5  
*/ K}S=f\Q]  
public void sort(int[] data) { +x:VIi  
for(int i=data.length/2;i>2;i/=2){ k8.,id  
for(int j=0;j insertSort(data,j,i); c3Ig4n0Y>  
} gd31ds!G  
} l_q1h]/   
insertSort(data,0,1); jI}{0LW&F&  
} : SD3  
6Vu??qBy  
/** xdsF! Zb  
* @param data q=BAYZ\`  
* @param j cz>`$Zz  
* @param i "Jyb?5  
*/ y3V47J2o  
private void insertSort(int[] data, int start, int inc) { t&bE/i_T  
int temp; .|kp`-F51  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); exm*p/  
} R&R{I/;i*.  
} Q},uM_" +  
} fV/  
LTD;  
} <8Q?kj  
H&ZsMML/%  
快速排序: '&xRb*  
6 ^p>f:5  
package org.rut.util.algorithm.support; v".u#G'u  
n-lDE}K9%B  
import org.rut.util.algorithm.SortUtil; @)@hzXQ  
!.={p8X-x  
/** 9c@\-Z'  
* @author treeroot lFM'F[-?-  
* @since 2006-2-2 bzMs\rj\  
* @version 1.0 "l09Ae'V  
*/ oxqD/fY  
public class QuickSort implements SortUtil.Sort{ dG]s_lb9H  
5HbPS%^.  
/* (non-Javadoc) Vuo 8[h>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n)teX.ck)  
*/ A832z`  
public void sort(int[] data) { K* 0]*am|v  
quickSort(data,0,data.length-1); m4T` Tg#P  
} nr9c G/"  
private void quickSort(int[] data,int i,int j){ G|]39/OO3{  
int pivotIndex=(i+j)/2; 6sRKbp|r7  
file://swap h<2O+"^  
SortUtil.swap(data,pivotIndex,j); T/l2B1  
=:'a)o  
int k=partition(data,i-1,j,data[j]); #T)gKp  
SortUtil.swap(data,k,j); i_;]UvP  
if((k-i)>1) quickSort(data,i,k-1); x~O_v  
if((j-k)>1) quickSort(data,k+1,j); n1)m(,{  
,7Lu7Q  
} oG;;='*  
/** s%qK<U4@;Q  
* @param data ]+0I8eerd  
* @param i thSo,uGlW  
* @param j )wY bcH  
* @return 80ms7 B  
*/ d~J4&w  
private int partition(int[] data, int l, int r,int pivot) { wms8z  
do{ u>-!5=D8  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 'xp&)g L  
SortUtil.swap(data,l,r); Q|}Pc>ae  
} [I` 6F6  
while(l SortUtil.swap(data,l,r); PizPsJ|&  
return l; ! =c&U.B  
} {utIaMb]&v  
nK9A=H'Hc  
} 6|:]2S  
!23#Bz7  
改进后的快速排序: Y|iALrx  
PUViTb  
package org.rut.util.algorithm.support; ^Ru/7pw 5  
#nh;KlI 0  
import org.rut.util.algorithm.SortUtil; K:eP Il{JE  
8.Ty ,7Z  
/** 6,|)%~VUm  
* @author treeroot *m sW4|=^2  
* @since 2006-2-2 D~Y 3\KP  
* @version 1.0 xem:#>&r  
*/ bP 2IX  
public class ImprovedQuickSort implements SortUtil.Sort { U= PG0  
>m{)shBX  
private static int MAX_STACK_SIZE=4096;  HRKe 7#e  
private static int THRESHOLD=10; 3E361?ubM  
/* (non-Javadoc) Z*|qbu)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v2Bks 2  
*/ OC]_b36v  
public void sort(int[] data) { i'%:z]hp9  
int[] stack=new int[MAX_STACK_SIZE]; q|%(47}z  
^\<1Y''  
int top=-1; GZ]; U] _  
int pivot; daZY;_{"o  
int pivotIndex,l,r; ATU 2\Y  
=kvYE,,g_  
stack[++top]=0; WVf>>E^1  
stack[++top]=data.length-1; ~l@SGHx  
AjZ@hid  
while(top>0){ G =+sW  
int j=stack[top--]; i=<N4Vx  
int i=stack[top--]; b&Sk./ J6  
bg)yl iX  
pivotIndex=(i+j)/2; 9c1n  
pivot=data[pivotIndex]; DPNUm<>  
XoaBX2  
SortUtil.swap(data,pivotIndex,j); t$Z#zx X  
!f \y3p*j  
file://partition E0}jEl/{  
l=i-1; bd2"k;H<o  
r=j; `1KZ14K  
do{ .;n<k  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); T%xB|^lf  
SortUtil.swap(data,l,r); zRJopcE<  
} :R<n{%~  
while(l SortUtil.swap(data,l,r); yl%F}kBR  
SortUtil.swap(data,l,j); 56m|gZcC  
$vdGkz@6  
if((l-i)>THRESHOLD){ Z;W`deA  
stack[++top]=i; fmvv q1G&  
stack[++top]=l-1; '+ |{4-V  
} m(8t |~S  
if((j-l)>THRESHOLD){ @fbB3  
stack[++top]=l+1; H0s,tTK8  
stack[++top]=j; g!O(@Sqp1  
} m4 *Rr  
cV5Lp4wY?  
} ?zNv7Bj  
file://new InsertSort().sort(data); (+9_nAgZ,  
insertSort(data); HQ+:0" B  
} xS,#TU;)Ol  
/** GjA;o3(  
* @param data 52>?l C  
*/ kG+CT  
private void insertSort(int[] data) { c|Nv^V*2  
int temp; d3(T=9;f2  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); - iS\3P.  
} mD)_quz.sk  
} oZ@_o3VG  
} Y2w 9]:J  
M*E4:A9_M  
} r$6z{Na\[  
2|#3rF  
归并排序: ue$\ i=jw  
y2^r.6"O  
package org.rut.util.algorithm.support; Sj}@5 X6 C  
y^:g"|q  
import org.rut.util.algorithm.SortUtil; ;EE*#"IJ  
xk}YeNVj  
/**  OXzJ%&h  
* @author treeroot Ni GK| Z   
* @since 2006-2-2 1z$;>+g<  
* @version 1.0 >0SF79-RE  
*/ h]c-x(+  
public class MergeSort implements SortUtil.Sort{ >ea<6&!Ee  
WFg'G>*  
/* (non-Javadoc) q'M-a tE.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oHbEHS61  
*/ ' d1E~A  
public void sort(int[] data) { #Qy*zU#9  
int[] temp=new int[data.length]; Sz"J-3b^  
mergeSort(data,temp,0,data.length-1); gNzQ"W=  
} nKh._bvfX  
kkFE9:[-c&  
private void mergeSort(int[] data,int[] temp,int l,int r){ M>0=A  
int mid=(l+r)/2; ][6$$ Lz  
if(l==r) return ; dLal 15Pb  
mergeSort(data,temp,l,mid); \A5cM\-  
mergeSort(data,temp,mid+1,r); VD +8j29  
for(int i=l;i<=r;i++){ 6,0pkx&Nv  
temp=data; ."PR Z,  
} ;vF8V`f   
int i1=l; "a6 wd  
int i2=mid+1; lbgnO s,  
for(int cur=l;cur<=r;cur++){ wr8n*Du  
if(i1==mid+1) %dS7u$Rnh  
data[cur]=temp[i2++]; (ZjIwA9>  
else if(i2>r) ?Gj$$IAe  
data[cur]=temp[i1++]; 3b{8c8N^  
else if(temp[i1] data[cur]=temp[i1++]; &H,j .~a&l  
else Hv<%_t_/  
data[cur]=temp[i2++]; aM3%Mx?w  
} f| 3`8JU  
} =2)5_/9au  
OsAXHjX}  
} czb(&><  
QO7 > XHn  
改进后的归并排序: Yq#I# 2RD  
y^hpmTB3"  
package org.rut.util.algorithm.support; 9ToM5oQ  
J~DP*}~XK  
import org.rut.util.algorithm.SortUtil; 7~eo^/Pb S  
-^$CGRE6A  
/** bP Er+?fu  
* @author treeroot ]<4Yor}t{;  
* @since 2006-2-2 /[GOs*{zB  
* @version 1.0 f3V&i)w(  
*/ z>&Py(  
public class ImprovedMergeSort implements SortUtil.Sort { #:vosVqG  
WMZa6cH  
private static final int THRESHOLD = 10; =q^o6{d0"  
=5%jKHo+9z  
/* %7O`]ik:  
* (non-Javadoc) "(/|[7D)  
* l?a(=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,<|EoravH  
*/ )dJM  
public void sort(int[] data) { Nt&}T  
int[] temp=new int[data.length]; ]NuY{T&:  
mergeSort(data,temp,0,data.length-1); FI*.2rdSR  
} \"_;rJ{!aE  
M[R, m_p  
private void mergeSort(int[] data, int[] temp, int l, int r) { S]9:3~  
int i, j, k; phbdV8$L  
int mid = (l + r) / 2; t_3)}  
if (l == r) zScV 9,H1  
return; h^~eTi;c]Q  
if ((mid - l) >= THRESHOLD) ~0|~Fg  
mergeSort(data, temp, l, mid); L`x:Y>C(  
else _"a(vfl#  
insertSort(data, l, mid - l + 1); {+z+6i  
if ((r - mid) > THRESHOLD) gO4J[_  
mergeSort(data, temp, mid + 1, r); X+P& up06  
else M$%aX,nk'  
insertSort(data, mid + 1, r - mid); vjZX8KAiZ  
EiP_V&\  
for (i = l; i <= mid; i++) { 5xLuuKG  
temp = data; _myam3[W  
} !;'U5[}8  
for (j = 1; j <= r - mid; j++) { EZIMp8^  
temp[r - j + 1] = data[j + mid]; cpFw]w%]  
} kdQ=%  
int a = temp[l]; - CT?JB  
int b = temp[r]; o,D>7|h  
for (i = l, j = r, k = l; k <= r; k++) { >B skw2  
if (a < b) { '8i np[_  
data[k] = temp[i++]; \0(QO8.  
a = temp; mV`Z]-$$i  
} else { # u^FB  
data[k] = temp[j--]; *ta|,  
b = temp[j]; sTeL4g|%{  
} cm-cwPAh  
} Si6%6rAhj  
} -Qiay/tlu  
kd|@.  
/** xlgN}M  
* @param data &{x5 |$SD  
* @param l #?!)-Q%  
* @param i n|SsV  
*/ @ L%3}  
private void insertSort(int[] data, int start, int len) { Cg}cD.  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 8cfxKUS  
} uzho>p[ae  
} H`),PY2  
} +X cB5S>  
} q^( [ & +  
K}`.?6O  
堆排序: kIrME:  
ut& RKr3  
package org.rut.util.algorithm.support; +S^Uw'L$=T  
a`q">T%q  
import org.rut.util.algorithm.SortUtil; cEve70MV  
h+,zfVJu  
/** 2B=yT8  
* @author treeroot :~ zK0v"  
* @since 2006-2-2 9i yNR!  
* @version 1.0 d@7 ]=P:  
*/ WkXa%OZ  
public class HeapSort implements SortUtil.Sort{ 2P!Pbl<  
s7(mNpo  
/* (non-Javadoc) R\A5f\L9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iW-w?!>|m  
*/ 2[r#y1ro  
public void sort(int[] data) { k U*\Fa*E  
MaxHeap h=new MaxHeap(); d=xU f`^  
h.init(data); O6Xu/X]  
for(int i=0;i h.remove(); ~-A5h(  
System.arraycopy(h.queue,1,data,0,data.length); yGZb  
} $khWu>b  
oq^#mJL  
private static class MaxHeap{ s$ &:F4=?  
:f 1*-y  
void init(int[] data){ IObGmc  
this.queue=new int[data.length+1]; QC \8Zy  
for(int i=0;i queue[++size]=data; dL |D  
fixUp(size); 1 c3gHc7{t  
} K>lA6i7?  
} %^2LTK(P  
^7Z)/c`"  
private int size=0; jU@qQ@|  
$ze%! C  
private int[] queue; -PB m@}*  
80![aj}z4G  
public int get() { -% 5*c61  
return queue[1]; (pREo/T  
} < :<E~anH  
9Fv1D  
public void remove() { XBF#ILJ  
SortUtil.swap(queue,1,size--); owmV7E1  
fixDown(1); |@sUN:G4k  
} CS:j->  
file://fixdown k9 .@S  
private void fixDown(int k) { ",w@_}z:  
int j; ['tGc{4  
while ((j = k << 1) <= size) { 7xMvf<1P  
if (j < size %26amp;%26amp; queue[j] j++; g.SFl  
if (queue[k]>queue[j]) file://不用交换 (}V.xi  
break; '.c [7zL  
SortUtil.swap(queue,j,k); Ldf<  
k = j; :+bQPzL  
} F7Mf>."  
} :~~}|Eu  
private void fixUp(int k) { c/^} =t(  
while (k > 1) { #i%it  
int j = k >> 1; Kxn/@@z>u  
if (queue[j]>queue[k]) |b QKymS  
break; O B_g:T  
SortUtil.swap(queue,j,k); Xg^`fRg =T  
k = j; UP58Cln*  
} X#Y0g`muW  
} =XzrmPu  
\v)Dy)Vhg2  
} QpBgG~h"  
&;&i#ZO  
} +j1s*}8  
`J'xVq#O  
SortUtil: *l)_&p  
?S~HnIn  
package org.rut.util.algorithm; dPc*!xrq  
%nSm 32/t3  
import org.rut.util.algorithm.support.BubbleSort; ;ug& v C  
import org.rut.util.algorithm.support.HeapSort; T4]/w|?G  
import org.rut.util.algorithm.support.ImprovedMergeSort; P6u9Ngay  
import org.rut.util.algorithm.support.ImprovedQuickSort; ONH!ms(kb  
import org.rut.util.algorithm.support.InsertSort; AME3hA  
import org.rut.util.algorithm.support.MergeSort; )^qM%k8  
import org.rut.util.algorithm.support.QuickSort; yAy~|1}  
import org.rut.util.algorithm.support.SelectionSort; g j8rrd |  
import org.rut.util.algorithm.support.ShellSort; ?T3zA2  
^ r-F@$:.  
/** }3E@]"<cVR  
* @author treeroot Oz'x5/%G  
* @since 2006-2-2 EcxPbRg  
* @version 1.0 <1YINkRz  
*/ :1^ R$0d  
public class SortUtil { Oh3AbpTT  
public final static int INSERT = 1; @%d g0F}h  
public final static int BUBBLE = 2; 'Ybd'|t{}  
public final static int SELECTION = 3; t3|If@T  
public final static int SHELL = 4; k@L},Td  
public final static int QUICK = 5; /BjM&v(5/  
public final static int IMPROVED_QUICK = 6; 12`q9Io"  
public final static int MERGE = 7; 'W(+rTFf!  
public final static int IMPROVED_MERGE = 8; %PRG;kR  
public final static int HEAP = 9; (OwAhjHE  
ea kj>7\s  
public static void sort(int[] data) { )r3}9J  
sort(data, IMPROVED_QUICK); :hJHjh  
} n+QUT   
private static String[] name={ Ebw1 %W KC  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" $N'AZY]4]  
}; ]-QY, k  
,pM~Phmp  
private static Sort[] impl=new Sort[]{  J -tOO  
new InsertSort(), *1"xvle  
new BubbleSort(), ZJ}9g(X..g  
new SelectionSort(), S96H`kedZo  
new ShellSort(), mFfw*,M  
new QuickSort(), N[~{'i  
new ImprovedQuickSort(), Xb?:dlu3  
new MergeSort(), tS!Fn Qg4  
new ImprovedMergeSort(), Veo*-sl  
new HeapSort() _0N=~`'  
}; 0zQ"5e?qy  
U_i%@{  
public static String toString(int algorithm){ K&Ner(/X`6  
return name[algorithm-1]; Rah"La  
} Cuu yG8  
d` %8qLIW  
public static void sort(int[] data, int algorithm) { ^0)Mc"&{  
impl[algorithm-1].sort(data); BmR++?L  
} QK%Nt  
5$f vI#NO<  
public static interface Sort { Uc%n{ a-a  
public void sort(int[] data);  ,5!&}  
} +`tl<r g;  
i[_ (0P+Da  
public static void swap(int[] data, int i, int j) { yM aU`z  
int temp = data; 5.m&93P  
data = data[j]; }<R,)ZV^G  
data[j] = temp; iO1ir+B\  
} ;;e\"%}@=q  
} Z/-9G  
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