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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。 P1mg;!tq  
插入排序: 3NpB1lgh&:  
q}P@}TE  
package org.rut.util.algorithm.support; %l7[eZ{Y  
QXkA%'@'  
import org.rut.util.algorithm.SortUtil; <T_3s\  
/** bTD?uX!^@  
* @author treeroot cT'Bp)a  
* @since 2006-2-2 uE's&H  
* @version 1.0 4EqThvI{  
*/ kZw"a*6  
public class InsertSort implements SortUtil.Sort{ C^ )Imr  
gs'M^|e)  
/* (non-Javadoc) -%` ~3*L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (TT=i  
*/ 6|jZv~rS$  
public void sort(int[] data) { 2`f{D~w  
int temp; eg;7BZim{  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Fv~lasW[  
} _RIU,uJs  
} !J7`frv"(  
} z(\a JW  
[{7#IZL  
}  _<S!tW  
st RM *.  
冒泡排序: = 7y-o  
yLC[-.H  
package org.rut.util.algorithm.support; 7H3v[ f^Q  
]M5~p^ RB  
import org.rut.util.algorithm.SortUtil; R0-0  
bB_LL  
/** T3{O+aRt  
* @author treeroot TWRP|i!i  
* @since 2006-2-2 z0 9Gp}^;  
* @version 1.0 oV%:XuywT  
*/ VExhN';  
public class BubbleSort implements SortUtil.Sort{ B"GC|}N )v  
:'p)xw4K|  
/* (non-Javadoc) *J-pAN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *$eH3nn6g  
*/ O)dnr8*  
public void sort(int[] data) { 6eSo.@*l  
int temp; CQWXLQED>  
for(int i=0;i for(int j=data.length-1;j>i;j--){ j[r}!;O  
if(data[j] SortUtil.swap(data,j,j-1); -$Fj-pO\  
} k$kE5kh,S  
} tRoSq;VrS  
} !eyLh&]5  
} ;73S;IPR  
FSEf0@O:  
} W>pe-  
vvxxwZa=O  
选择排序: Nn05me"X  
^EUR#~b5iy  
package org.rut.util.algorithm.support; MLdwf}[  
wsQnjT>  
import org.rut.util.algorithm.SortUtil; qf0pi&q  
Nh!`"B2B  
/** oXG_6E!^  
* @author treeroot [\ao#f0WR  
* @since 2006-2-2 .Pm5nS  
* @version 1.0 UXct+l  
*/ 1-gM)x{Jr  
public class SelectionSort implements SortUtil.Sort { tyR?A>F4  
 y<Koc>8  
/* KtQs uL%  
* (non-Javadoc) ^?lpY{aa  
* KTm^}')C8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^OV; P[  
*/ P'<i3#;7X  
public void sort(int[] data) { ,l>w9?0Z  
int temp; E'WXi!>7p  
for (int i = 0; i < data.length; i++) {  kORWj<  
int lowIndex = i; /!Rva"  
for (int j = data.length - 1; j > i; j--) { x@  =p  
if (data[j] < data[lowIndex]) { >fC&bab  
lowIndex = j; ']nIa7  
} TQn!MUj/^  
} 5=TgOS]R  
SortUtil.swap(data,i,lowIndex); \g34YY^L3  
} )g:5}+  
} tb&?BCp  
9 /H~hEVK  
} 31G:[;g  
\lK?f]qJq  
Shell排序: L~ &S<5?  
,Q"'q0hM=  
package org.rut.util.algorithm.support; ; <FAc R  
ei= 4u'  
import org.rut.util.algorithm.SortUtil; {-5)nS^_  
)w].m  
/** uc,>VzdB  
* @author treeroot #*A&jo'E  
* @since 2006-2-2  LDg9@esi  
* @version 1.0 WDw<kX6p  
*/ B!&5*f}*  
public class ShellSort implements SortUtil.Sort{ 1| sem(t  
n{QyqI  
/* (non-Javadoc) MXSD8]je  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g (&cq  
*/ NO*, }aeG  
public void sort(int[] data) { :a*>PMTn  
for(int i=data.length/2;i>2;i/=2){ "Da 1BuX\  
for(int j=0;j insertSort(data,j,i); T, #-: }  
} *8)?ZZMM  
} C1-U2@  
insertSort(data,0,1); iF`_-t/k  
} 1EV bGe%b  
nFni1cCD  
/** 7@{%S~TN  
* @param data ^JY {<   
* @param j 1L <TzQ  
* @param i U 4d7-&U  
*/ "W5MZ  
private void insertSort(int[] data, int start, int inc) {  hE:~~ox  
int temp; `he# !"  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Z.${WZW  
} @* hv|zjs  
} XGZZKvp  
} Ny"9!3V   
l4RqQ+[KA;  
} ~?NCmU=3  
8ve-g\C8 H  
快速排序: /o4_rzR?  
j"jssbu}  
package org.rut.util.algorithm.support; 0Px Hf*  
`O7vPE  
import org.rut.util.algorithm.SortUtil; ]{tWfv|Xg8  
]:f.="  
/** gxhp7c182  
* @author treeroot 'N{1b_v?  
* @since 2006-2-2 6O/L~Z*t  
* @version 1.0 ~;(\a@ _  
*/ 'Ft81e)/  
public class QuickSort implements SortUtil.Sort{ XB'rh F8rl  
oN}\bK  
/* (non-Javadoc) ~ T}D#}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E zcch1  
*/ Hl$qmq  
public void sort(int[] data) { Q^{TcL8  
quickSort(data,0,data.length-1); .EhC\QpP  
} Yh]a4l0  
private void quickSort(int[] data,int i,int j){ bAt!S  
int pivotIndex=(i+j)/2; 9?Bh8%$  
file://swap hEjvtfM9\-  
SortUtil.swap(data,pivotIndex,j); \WE/#To  
0faf4LzU!  
int k=partition(data,i-1,j,data[j]); VsA_x  
SortUtil.swap(data,k,j); (B\Kb4m  
if((k-i)>1) quickSort(data,i,k-1); y1 a%f.F`  
if((j-k)>1) quickSort(data,k+1,j); nIH(2j  
yi^X?E{WnX  
} 6%EpF;T`  
/** 4"PA7 e  
* @param data <w&'E6mU  
* @param i A#$l;M.3R  
* @param j &# fPJc  
* @return EW]DzL 3  
*/ >0kL9_9{  
private int partition(int[] data, int l, int r,int pivot) { <2*+Y|Lk2  
do{ G,A?yM'Vw  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ,pcyU\68v  
SortUtil.swap(data,l,r); , JH*l:7  
} @{V`g8P>  
while(l SortUtil.swap(data,l,r); 4=q4_ \_T  
return l; Rq1 5AR  
} z .lb(xQ  
h(2{+Y+  
} TFbc@rfB  
n}NUe`E_h  
改进后的快速排序: a\-5tYo`u  
PM*lnd#J  
package org.rut.util.algorithm.support; !o'a]8  
h9S f  
import org.rut.util.algorithm.SortUtil; >o"s1* {  
v*excl~  
/** KXTk.\c  
* @author treeroot hpOY&7QUTD  
* @since 2006-2-2 mmFcch$Jv  
* @version 1.0 )cN=/i  
*/ U;&s=M0[  
public class ImprovedQuickSort implements SortUtil.Sort { mC ]Krnx  
P,S!Z&!  
private static int MAX_STACK_SIZE=4096; 6jr}l  
private static int THRESHOLD=10; SFWS<H(IN  
/* (non-Javadoc) 1|*%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  t":^:i'M  
*/ !OV+2suu1  
public void sort(int[] data) { fpNq  
int[] stack=new int[MAX_STACK_SIZE]; El`G<esX  
S@\&^1;4Hv  
int top=-1; #\~m}O,  
int pivot; {w>ofyqfp&  
int pivotIndex,l,r; ]I~BgE;C9  
5'Mw{`  
stack[++top]=0; %Y`)ZKh  
stack[++top]=data.length-1; ADP[KZO$ 4  
(4l M3clF  
while(top>0){ L-W*h  
int j=stack[top--]; I<lkociUCG  
int i=stack[top--]; $v{s b,  
N}bZdE9F  
pivotIndex=(i+j)/2; PClwGO8'&  
pivot=data[pivotIndex]; Ejf>QIB  
I~ SFY>s  
SortUtil.swap(data,pivotIndex,j); +DT tKj  
AxJf\B8  
file://partition c1%ki%J#  
l=i-1; bB.nevb9p  
r=j; =Oh/4TbW[  
do{ Y$q--JA  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); uN9.U  _  
SortUtil.swap(data,l,r); arPqVMVr  
} IOUzj{G#  
while(l SortUtil.swap(data,l,r); K!jau|FS  
SortUtil.swap(data,l,j); 1p>&j%dk  
kJXy )  
if((l-i)>THRESHOLD){ Re\V<\$J  
stack[++top]=i; Q!Dr3x  
stack[++top]=l-1; Izfj 9h ?  
} +DT)7 koA  
if((j-l)>THRESHOLD){ xI=[=;L  
stack[++top]=l+1; !]f:dWSLB  
stack[++top]=j; [aC2ktI  
} h1_KZ[X  
YF");itH  
} eR1]<Z$W\  
file://new InsertSort().sort(data); n@e|PWu  
insertSort(data); $/i;UUd  
} 2L2)``*   
/** fl9J  
* @param data N'5!4JUI  
*/ M\9p-%"L  
private void insertSort(int[] data) { 0Ioa;XgOn  
int temp; ]\R%@FCYc  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }WkR-5N  
} T8QRO%t  
} *O-si%@]  
} Y6%O9b  
zI>,A|yy  
} ;@u+b0 j  
8>^O]5Wo`X  
归并排序: g60r m1b  
2ap0/l[  
package org.rut.util.algorithm.support; 7+p=4i^@Zs  
h "r)z6Q/  
import org.rut.util.algorithm.SortUtil; 9s6d+HhM  
c/}bx52>u  
/** Yyh X%S%  
* @author treeroot ;fDs9=3#  
* @since 2006-2-2 U@?Ro enn  
* @version 1.0 oxm3R8 S  
*/ hz+x)M`Y  
public class MergeSort implements SortUtil.Sort{ OGO4~Up  
$5l=&  
/* (non-Javadoc) 8BJ&"y8H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3m`y?Dd  
*/ [^-DFq5@  
public void sort(int[] data) { #$>m`r  
int[] temp=new int[data.length]; &mvC<_1n  
mergeSort(data,temp,0,data.length-1); a)8M'f_z  
} Co>=<\yi  
ZgI1Byf  
private void mergeSort(int[] data,int[] temp,int l,int r){ j1,ir  
int mid=(l+r)/2; l<nL8/5{<  
if(l==r) return ; 1~q|%"J  
mergeSort(data,temp,l,mid); G_x<2E"d  
mergeSort(data,temp,mid+1,r); P\H$*6v(  
for(int i=l;i<=r;i++){ VSt)~  
temp=data; 1vBXO bk  
} pEE.%U  
int i1=l; F4Gv=q)Z  
int i2=mid+1; '`Z5 .<n7p  
for(int cur=l;cur<=r;cur++){ {o[ *S%Z"  
if(i1==mid+1) Cc,,e`  
data[cur]=temp[i2++]; rt\4We,7  
else if(i2>r) h=~ TgTv  
data[cur]=temp[i1++]; #}!Ge  
else if(temp[i1] data[cur]=temp[i1++]; c`&<"Us  
else !_gHIJiq}  
data[cur]=temp[i2++]; ZjXpMx,  
} 3v%V\kO=F  
} EWg\\90  
<Cw)S8t  
} 4HK#]M>yz  
!8O*)=RA  
改进后的归并排序: +H~})PeQ  
3Ga! )  
package org.rut.util.algorithm.support; v [ 4J0  
@nS+!t{  
import org.rut.util.algorithm.SortUtil; V}kZowWD  
G? "6[w/p  
/** 5l"v:Px  
* @author treeroot /u 8m|S<  
* @since 2006-2-2 !7lS=D(?  
* @version 1.0 >h7qI-  
*/ /K9Tn  
public class ImprovedMergeSort implements SortUtil.Sort { y  ZsC>  
5[Yzi> o[  
private static final int THRESHOLD = 10; 64>o3Hb2  
/-l7GswF  
/* {\L /?#  
* (non-Javadoc) IOsitMOX:  
* 4` gAluJ#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [huS"1  
*/ 1/YWDxo,  
public void sort(int[] data) { bi bjFg   
int[] temp=new int[data.length]; vo[Zuv?<h  
mergeSort(data,temp,0,data.length-1); $!x8XpR8s  
} x\Bl^1&  
^{GnEqml&  
private void mergeSort(int[] data, int[] temp, int l, int r) { X99:/3MXB'  
int i, j, k; .ns1;8  
int mid = (l + r) / 2; >c>f6  
if (l == r) hp]T^  
return; Z`23z( +  
if ((mid - l) >= THRESHOLD) 54w..8'  
mergeSort(data, temp, l, mid); Lh6G"f(n  
else ;_GS<[A3  
insertSort(data, l, mid - l + 1); Wej8YF@  
if ((r - mid) > THRESHOLD) uFIr.U$V  
mergeSort(data, temp, mid + 1, r); ^E8XPK]-~  
else @O/-~, E68  
insertSort(data, mid + 1, r - mid); Ax4nx!W,   
'@h5j6:2  
for (i = l; i <= mid; i++) { YAqv:  
temp = data; gh3XC.&  
} %+U.zd$  
for (j = 1; j <= r - mid; j++) { H\7Qf8s|{  
temp[r - j + 1] = data[j + mid]; p*8LS7UT  
} z )2h\S  
int a = temp[l]; {(i>$RG_  
int b = temp[r]; +v3@WdLcD  
for (i = l, j = r, k = l; k <= r; k++) { :e 5)Q=lX  
if (a < b) { #=@( m.k:s  
data[k] = temp[i++]; C&b^TLe  
a = temp; W~J@v@..4  
} else { ON|Bpt2Qp  
data[k] = temp[j--]; A=/|f$s+  
b = temp[j]; vlAYKtl3]  
} y-gSal  
} :yo tpa  
} V^WR(Q}  
TpLlbsd  
/** "k(Ee  
* @param data n5X0Gi9  
* @param l /AX1LYlr  
* @param i K)c`G_%G  
*/ %Uj7 g>  
private void insertSort(int[] data, int start, int len) {  q[#2`  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); uI^E9r/hB  
} ;H5PiSq;z  
} /pZ]:.A  
} \-Mzs 0R  
} mdW8RsR  
V8w!yc  
堆排序: 1H{M0e  
Nh7+Vl  
package org.rut.util.algorithm.support; A\9Q gM  
R87-L*9B^0  
import org.rut.util.algorithm.SortUtil; M/XxiF  
!j,LS$tPu  
/** #;?j]npg]  
* @author treeroot 7{ zkqug  
* @since 2006-2-2 \*Ro a&<!  
* @version 1.0 `x2Q:&.H`  
*/ Q%6 1_l  
public class HeapSort implements SortUtil.Sort{ <\< [J0  
_Gv[ D  
/* (non-Javadoc) S3rN]!B+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rnvKfTpZDU  
*/ @0cQ4}  
public void sort(int[] data) { #%t&f"j2  
MaxHeap h=new MaxHeap(); og<mFbqkq7  
h.init(data); C 7)w8y  
for(int i=0;i h.remove(); X#KC<BXw,  
System.arraycopy(h.queue,1,data,0,data.length); <<}t&qE%2%  
} Fp52 |w_  
]RgLTqv4x  
private static class MaxHeap{ ],l w  
n4Od4&r  
void init(int[] data){ iq_y80g`8h  
this.queue=new int[data.length+1]; EY=`/~|c  
for(int i=0;i queue[++size]=data; @giJ&3S,  
fixUp(size); t .*z)N  
}  B@Acm  
} z DDvXz  
5}d"nx  
private int size=0; gPs%v`y)*D  
41f4zisZ  
private int[] queue; `NqX{26GV+  
dHp(U :)  
public int get() { o";5@NH  
return queue[1]; xxWrSl`fB  
} /XtpGk_1)  
%a- *Ku  
public void remove() { n#,<-Rb-  
SortUtil.swap(queue,1,size--); =SJwCT0;  
fixDown(1); QJ2V&t"3  
} d4OWnPHv&}  
file://fixdown ck-ab0n  
private void fixDown(int k) { @Sb 86Ee  
int j; +X)n}jh  
while ((j = k << 1) <= size) { d1YE$   
if (j < size %26amp;%26amp; queue[j] j++; HAa2q=  
if (queue[k]>queue[j]) file://不用交换 oxkA+}^j8M  
break; !QK ~l  
SortUtil.swap(queue,j,k); *7.EL`8  
k = j; 6%  +s`  
} <xOv0B  
} T~B'- >O  
private void fixUp(int k) { o4I&?d7;"  
while (k > 1) { N|cWTbi  
int j = k >> 1; >_3+s~  
if (queue[j]>queue[k]) 2$8#ePyq*  
break; P|mV((/m4  
SortUtil.swap(queue,j,k); 2 MFGKzO  
k = j; *~b3FLzq  
} :2#8\7IU^'  
} 2n}nRv/'  
9GdQ$^m  
} %YjZF[P  
cR.[4rG'  
} F0,-7<G  
N<bNJD}  
SortUtil: P e_mX*0  
?@W=bJ8{  
package org.rut.util.algorithm; ,0ZkE}<=w  
\wW'Hk=  
import org.rut.util.algorithm.support.BubbleSort; ^zjQ(ca@"x  
import org.rut.util.algorithm.support.HeapSort; uMW5F-~-+  
import org.rut.util.algorithm.support.ImprovedMergeSort; M XB fX  
import org.rut.util.algorithm.support.ImprovedQuickSort; @o&.]FZs  
import org.rut.util.algorithm.support.InsertSort; Gt{'` P,&9  
import org.rut.util.algorithm.support.MergeSort; xi5/Wc6  
import org.rut.util.algorithm.support.QuickSort; WU oGIT'  
import org.rut.util.algorithm.support.SelectionSort; /9/svPc]  
import org.rut.util.algorithm.support.ShellSort; ;DWtCtD  
Yv0;UKd  
/** qkX}pQkG)h  
* @author treeroot s':fv[%  
* @since 2006-2-2 H` !%"  
* @version 1.0 YDEUiZ~  
*/ e jY|o Bj  
public class SortUtil { 4 I}xygV  
public final static int INSERT = 1; ~_vzss3-C  
public final static int BUBBLE = 2; z:PH _N~  
public final static int SELECTION = 3; PVBf'  
public final static int SHELL = 4; 8ut:cCrmg  
public final static int QUICK = 5; b?&=gm%oU  
public final static int IMPROVED_QUICK = 6; zPwU'TbF  
public final static int MERGE = 7; ['F,  
public final static int IMPROVED_MERGE = 8; `V N $ S  
public final static int HEAP = 9; "]BefvE  
4fe$0mye  
public static void sort(int[] data) { /($!("b  
sort(data, IMPROVED_QUICK); <.c@l,[.z  
} JDO5eEwj  
private static String[] name={ Y,1sNg  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" }Ip"j]h  
}; "zJGYBen  
>AcpJ|V  
private static Sort[] impl=new Sort[]{ 9A]XuPAlh  
new InsertSort(), QInow2/u  
new BubbleSort(), ]s lYr8m  
new SelectionSort(), $)OUOv  
new ShellSort(), h'8w<n+%)  
new QuickSort(), }NQx2k0  
new ImprovedQuickSort(), l@}BWSx&ms  
new MergeSort(), Ve<3XRq|8  
new ImprovedMergeSort(), -BWkPq!  
new HeapSort() !A>VzW  
}; Y~=]RCg  
[oOA@  
public static String toString(int algorithm){ #A|~s;s>N  
return name[algorithm-1]; .hh 2II  
} )3i}(h0  
I0\}S [+ H  
public static void sort(int[] data, int algorithm) { -"L)<J@gQ?  
impl[algorithm-1].sort(data); QiU!;!s  
} "Fv6u]Rv  
X8T7(w<0%f  
public static interface Sort { R#Z1+&='  
public void sort(int[] data); FrSeR9b  
} a$p2I+lX  
/f!_dJ^  
public static void swap(int[] data, int i, int j) { #k%3Ag  
int temp = data; )2Gp3oD?  
data = data[j]; {},rbQ -  
data[j] = temp; zdA:K25"  
} =l`xXma  
} 1XZ|}Xz  
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