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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。 h&i(Kfv*  
插入排序:  Q'cWqr  
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package org.rut.util.algorithm.support; gktlwiCZ  
X ]&`"Z]  
import org.rut.util.algorithm.SortUtil; -">Tvi4  
/** g qORE/[  
* @author treeroot dHOH]x  
* @since 2006-2-2 o$->|k  
* @version 1.0  8zRw\]?  
*/ 8?m=Vw<kIZ  
public class InsertSort implements SortUtil.Sort{ ubZuvWZ  
65@GXn[W_  
/* (non-Javadoc) >Giw\|:f(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jxW/"Q   
*/ )IK%Dg(v  
public void sort(int[] data) { E)Qg^DHP/  
int temp;  h8p{  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Xo(W\Pes  
} JcP<@bb>B  
} RF6]_-  
} OAo03KW  
 n}b/9  
} \Qv:7;?  
NR&a er  
冒泡排序: X`v6gv5qj  
(/&ht-~EL  
package org.rut.util.algorithm.support; Q ijO%)  
Qu<HeSA_  
import org.rut.util.algorithm.SortUtil; 8Rw:SU9H?T  
zN9@.!?X2  
/** g&B7Y|Es  
* @author treeroot vm*9xs  
* @since 2006-2-2 h$~$a;2cR  
* @version 1.0 P*Jk 8MK#G  
*/ O*/Utl  
public class BubbleSort implements SortUtil.Sort{ 2y$DTMu  
uU$/4{  
/* (non-Javadoc) ](-[ I#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v{lDEF@2^N  
*/ v(O@~8(I  
public void sort(int[] data) { @DM NL sQ  
int temp; +LWgby4q  
for(int i=0;i for(int j=data.length-1;j>i;j--){ y&4im;X0  
if(data[j] SortUtil.swap(data,j,j-1); GQ.akA_(  
} gQ '=mU  
} ?OO !M  
} c}=[r1M*  
} &,XPMT  
|M<R{Tt}nf  
} } -hH2  
\sVzBHy d  
选择排序: EG=U](8T  
c&RiUU7  
package org.rut.util.algorithm.support; R 'mlKe x  
W^:g_  
import org.rut.util.algorithm.SortUtil; 6xh -m  
XxB%  
/** |QH )A  
* @author treeroot z}VCiS0  
* @since 2006-2-2 [)[?FG9   
* @version 1.0 +C`vO5\0  
*/ {iLr$ 89  
public class SelectionSort implements SortUtil.Sort { RKs_k`N0  
.$G^c   
/* j\.pS^+  
* (non-Javadoc) ^=cX L  
* /xA`VyHO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h*[sV  
*/ ER]C;DYX  
public void sort(int[] data) { ocp3JR_0  
int temp; |@>Zc5MY$  
for (int i = 0; i < data.length; i++) { MhFj>t   
int lowIndex = i; qP%[ nY  
for (int j = data.length - 1; j > i; j--) { T5-'|+  
if (data[j] < data[lowIndex]) { H:1F=$0I9  
lowIndex = j; %s%e5hU  
} QmPHf*w[  
} TlQ5'0&I  
SortUtil.swap(data,i,lowIndex); Tkf4`Gxd  
} %%O_:@9x,  
} c$hoqi |tD  
y3V47J2o  
} t&bE/i_T  
.|kp`-F51  
Shell排序: = 6w(9O  
t9 id^  
package org.rut.util.algorithm.support; T:j!a{_|  
zpxy X|  
import org.rut.util.algorithm.SortUtil; H&ZsMML/%  
'&xRb*  
/** ZcN%F)htm  
* @author treeroot O >&,h^  
* @since 2006-2-2 WgV[,(  
* @version 1.0 +7)/SQM5  
*/ ^yF2xJ)9-  
public class ShellSort implements SortUtil.Sort{ f=MR.\  
!3at(+4  
/* (non-Javadoc) Lr(wS {  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b(g?X ( &  
*/ OEN'c0;5  
public void sort(int[] data) { Zf`dd T  
for(int i=data.length/2;i>2;i/=2){ j~9,Ct  
for(int j=0;j insertSort(data,j,i); 0 .t1p(x;  
} W&k2z,|  
} TH}+'m  
insertSort(data,0,1); O~g0R6M6e  
} &_c5C  
{7q +3f <  
/** pe@/tO&I  
* @param data ] i\a[3  
* @param j ;6zp,t0  
* @param i ? #;zB  
*/ @)wNINvD  
private void insertSort(int[] data, int start, int inc) { Ne,u\q3f  
int temp; x~O_v  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); n1)m(,{  
} ,7Lu7Q  
} QVrMrm+vRv  
} MU&P+Wr  
u%Yr&u  
} qg@Wzs7c~  
)%5T*}j  
快速排序: s*pgR=dZZ  
"Q@ZS2;A  
package org.rut.util.algorithm.support; !tD,phca~  
{YgB?kt5  
import org.rut.util.algorithm.SortUtil; }h)[>I(  
bQM_rqjJGw  
/** | [lM2  
* @author treeroot ddD $ 4+  
* @since 2006-2-2 Z)zmT%t  
* @version 1.0 lFL iW  
*/ gobqS+c  
public class QuickSort implements SortUtil.Sort{ Z66@@?`  
S}*%l)vfR  
/* (non-Javadoc) @=[ SsS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )TcW.d6  
*/ $r=Ud >  
public void sort(int[] data) { NLxsxomj  
quickSort(data,0,data.length-1); Q:B:  
} @v,qfT*k7  
private void quickSort(int[] data,int i,int j){ MoP 0qNk  
int pivotIndex=(i+j)/2; M9b_Q  
file://swap :3Z"Qk$uR  
SortUtil.swap(data,pivotIndex,j); fOyLBixR  
l;g8_uyjv7  
int k=partition(data,i-1,j,data[j]); .<`Rq'  
SortUtil.swap(data,k,j); L~jKx)S%  
if((k-i)>1) quickSort(data,i,k-1); IZ6[|Ach6  
if((j-k)>1) quickSort(data,k+1,j); +H L]t'UEg  
;0VE *  
} UujFZg[-P9  
/** NN W*  
* @param data OC]_b36v  
* @param i 6!n%SUt  
* @param j uNYHEs6%T$  
* @return )xQA+$H#4  
*/ [ Q6v#I  
private int partition(int[] data, int l, int r,int pivot) { (HkMubnqg  
do{ A %s"WSx,  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); vx_v/pD  
SortUtil.swap(data,l,r); >p 7e6%  
} RSY{IY  
while(l SortUtil.swap(data,l,r); cwxO| .m  
return l; G =+sW  
} i=<N4Vx  
%G$KahxV>  
} jibrSz  
^8nK x<&5  
改进后的快速排序: ,wlh0;,  
q*<Df=+B  
package org.rut.util.algorithm.support; t$Z#zx X  
!f \y3p*j  
import org.rut.util.algorithm.SortUtil; E0}jEl/{  
0Kjm:x9T  
/** g<Sa{<0  
* @author treeroot .;n<k  
* @since 2006-2-2 T%xB|^lf  
* @version 1.0 zRJopcE<  
*/ :R<n{%~  
public class ImprovedQuickSort implements SortUtil.Sort { yl%F}kBR  
56m|gZcC  
private static int MAX_STACK_SIZE=4096; $vdGkz@6  
private static int THRESHOLD=10; HzT"{N9  
/* (non-Javadoc) !58-3F%P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w7"Z @$fs  
*/ KwRO?G9&  
public void sort(int[] data) { )A['+s  
int[] stack=new int[MAX_STACK_SIZE]; ![iAALPNl  
Ng,#d`Br  
int top=-1; %97IXrE  
int pivot; TUiXE~8=  
int pivotIndex,l,r; t\]CdH`+  
-C5Qh&~W  
stack[++top]=0; c;ELAns>  
stack[++top]=data.length-1; y?M99Vo4?  
*IGgbg[0  
while(top>0){ n5%rsNxg  
int j=stack[top--]; eGblQGRS  
int i=stack[top--]; SN'LUwaMp!  
2`l$uEI3oJ  
pivotIndex=(i+j)/2; F#Oqa^$(  
pivot=data[pivotIndex]; E q.?Ga  
(CH F=g  
SortUtil.swap(data,pivotIndex,j); ;{ Y|n_  
UtiS?w6  
file://partition :D?%!Q 0  
l=i-1; N.u)Mbe   
r=j; t.>vLzrU  
do{ ;EE*#"IJ  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); xk}YeNVj  
SortUtil.swap(data,l,r);  OXzJ%&h  
} >=i47-H  
while(l SortUtil.swap(data,l,r); v. ,C"^W  
SortUtil.swap(data,l,j); {JzX`Z30l  
8Hs>+Udl  
if((l-i)>THRESHOLD){ Y'Jb@l`$-  
stack[++top]=i; ^^%sPtp  
stack[++top]=l-1; ~^IS{1  
} /z,sM"d  
if((j-l)>THRESHOLD){ z8mR< q%`  
stack[++top]=l+1; q0w5ADd  
stack[++top]=j; O.1Z3~r-N  
} w-|i8%X  
aIZ@5w"7  
} |jaUVE_2[  
file://new InsertSort().sort(data); &|26x >  
insertSort(data); U\ y?P:yy  
} Om{[ <tL  
/** >NW /0'/  
* @param data M\8FjJ>9  
*/ 3`k 1  
private void insertSort(int[] data) { ho@f}4jhQ3  
int temp; ALwkX"AN  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *n2Q_o  
} yI bz\3  
} ~c :e0}  
} F)Yn1&a#H  
W==HV0n  
} bUp%87<*X  
n\.K:t[:  
归并排序: =M 7FD  
Uz\B^"i|  
package org.rut.util.algorithm.support; klKAwCQ,  
QM9~O#rL  
import org.rut.util.algorithm.SortUtil; < 7zyRm@S  
g^ ^%4Y  
/** fh )QX  
* @author treeroot IJ o`O  
* @since 2006-2-2 )"jG)c^1*  
* @version 1.0 }vxb, [#  
*/ hX 9.%-@sR  
public class MergeSort implements SortUtil.Sort{ 0:h;ots'  
RoLUPy9U  
/* (non-Javadoc) 7J,W#Ql)5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {{[).o/  
*/ ^QB/{9#  
public void sort(int[] data) { |RwD]2H  
int[] temp=new int[data.length]; ,u{d@U^)3@  
mergeSort(data,temp,0,data.length-1); bu%@1:l  
} )Bl% {C  
pt(GpbtWK  
private void mergeSort(int[] data,int[] temp,int l,int r){ zV4%F"-  
int mid=(l+r)/2; [t<^WmgtxL  
if(l==r) return ; #'^p-Jdm  
mergeSort(data,temp,l,mid); IL}pVa00{n  
mergeSort(data,temp,mid+1,r); /,/T{V[  
for(int i=l;i<=r;i++){ A`=ESz  
temp=data; 27E6S)zv  
} p2!x8`IB*  
int i1=l;  -deY,%  
int i2=mid+1; -d %bc?  
for(int cur=l;cur<=r;cur++){ H<%7aOwO2  
if(i1==mid+1) 0[T!}F^%e  
data[cur]=temp[i2++]; FD#?pVyPn^  
else if(i2>r) CTR|b}!  
data[cur]=temp[i1++]; Zx55mSfx:  
else if(temp[i1] data[cur]=temp[i1++]; 8S@ ~^D  
else @+ Berb  
data[cur]=temp[i2++]; Otn,(j;u  
} k^]+I% ?Q  
} Fmt5"3B  
\@['V   
} @p|[7'  
l8GziM{lp  
改进后的归并排序: \?GUGs  
T!pWU*aB  
package org.rut.util.algorithm.support; A]BG*  
. ~G>vVb  
import org.rut.util.algorithm.SortUtil; Zj~tUCc  
T {(6*^g<B  
/** ?O\n!c  
* @author treeroot 6VQ*z8wLw  
* @since 2006-2-2 =35EG{W(  
* @version 1.0 #TZYe4#f  
*/ 8_Y{7;<ey  
public class ImprovedMergeSort implements SortUtil.Sort { {TzKHnP  
]J;^< 4l  
private static final int THRESHOLD = 10; X  LA  
[ #A!B#`  
/* _9#4  
* (non-Javadoc) ^%#v AS  
* :8E(pq|1PB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kd|@.  
*/ ~Rk6@&ZS}  
public void sort(int[] data) { &{x5 |$SD  
int[] temp=new int[data.length]; #?!)-Q%  
mergeSort(data,temp,0,data.length-1); n|SsV  
} @w,-T@nAW  
( y2%G=.j  
private void mergeSort(int[] data, int[] temp, int l, int r) { WSi Utf|g  
int i, j, k; 9!_`HE+(XJ  
int mid = (l + r) / 2; kIrME:  
if (l == r) ut& RKr3  
return; +S^Uw'L$=T  
if ((mid - l) >= THRESHOLD) a`q">T%q  
mergeSort(data, temp, l, mid); cEve70MV  
else h+,zfVJu  
insertSort(data, l, mid - l + 1); 2B=yT8  
if ((r - mid) > THRESHOLD) [% |i  
mergeSort(data, temp, mid + 1, r); lmj73OB3  
else 7AV!v`  
insertSort(data, mid + 1, r - mid); IA$:r@QNx8  
R\A5f\L9  
for (i = l; i <= mid; i++) { iW-w?!>|m  
temp = data; 2[r#y1ro  
} k U*\Fa*E  
for (j = 1; j <= r - mid; j++) { asj^K|.z  
temp[r - j + 1] = data[j + mid]; -?2ThvT  
} ~-A5h(  
int a = temp[l]; yGZb  
int b = temp[r]; y*vs}G'W  
for (i = l, j = r, k = l; k <= r; k++) { &=<x&4H+  
if (a < b) { 5mnIQ~psR  
data[k] = temp[i++]; SEIGs_^'\  
a = temp; Q;)[~p  
} else { 'F5&f9 A  
data[k] = temp[j--]; 8nt:peJ$+  
b = temp[j]; #)GL%{Oa  
} -+Kx^V#'R  
} 8"N<g'Yl,  
} F.c,FR2  
#J)sz,)(  
/** \a<qI  
* @param data ~>k<I:BtrT  
* @param l jXSo{  
* @param i (O\5gAx  
*/  zy  
private void insertSort(int[] data, int start, int len) { $FNj>1  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 8}XtVF;  
} A=I]1r  
} }_@*,  
} 9=ns.r  
} U;`N:~|p#  
P"XF|*^U  
堆排序: :JV= Kt  
Ldf<  
package org.rut.util.algorithm.support; rt_%_f>qd  
|XtN\9V.  
import org.rut.util.algorithm.SortUtil; !X` 5  
SBzJQt@Hs  
/** W[AX?  
* @author treeroot 8jMw7ti  
* @since 2006-2-2 d2Z5HFtY  
* @version 1.0 Y]Vt&*{JV  
*/ UP58Cln*  
public class HeapSort implements SortUtil.Sort{ !0zbWB9  
/$|C s  
/* (non-Javadoc) =$X5O&E3'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lr=? &>MXj  
*/ VY<$~9a&1  
public void sort(int[] data) { x{*g^f  
MaxHeap h=new MaxHeap(); kl?U 2A.=  
h.init(data); 4`I2tr  
for(int i=0;i h.remove(); %\6|fKB4 <  
System.arraycopy(h.queue,1,data,0,data.length); ?w#V<3=  
} ^vn8s~#  
yS[:C 2v  
private static class MaxHeap{ 0BMKwZg  
 s X.L  
void init(int[] data){ EeIV6ug  
this.queue=new int[data.length+1]; )D{L<.i_  
for(int i=0;i queue[++size]=data; 6NPCp/  
fixUp(size); ^HgQ"dD <  
} jV2L;APCq  
} 6}6;%{p"Gu  
Oh3AbpTT  
private int size=0; @%d g0F}h  
'Ybd'|t{}  
private int[] queue; t3|If@T  
k@L},Td  
public int get() { /BjM&v(5/  
return queue[1]; 12`q9Io"  
} 'W(+rTFf!  
_PLY<i2vr  
public void remove() { V7[6jW gH  
SortUtil.swap(queue,1,size--); 9utiev~3  
fixDown(1); ![h+ R@_(  
} Y,w'Op  
file://fixdown ##+|zka!U  
private void fixDown(int k) { ELfcZfJ  
int j; tJ>%Xop  
while ((j = k << 1) <= size) { N: ?UA  
if (j < size %26amp;%26amp; queue[j] j++; GvSSi'q~B  
if (queue[k]>queue[j]) file://不用交换 <o@&I " o  
break; S96H`kedZo  
SortUtil.swap(queue,j,k); M<s16  
k = j; a"SH_+T{  
} 2~dUnskyy  
} {; #u~e(W  
private void fixUp(int k) { H=Scrvfx  
while (k > 1) { }{T9`^V:h  
int j = k >> 1; %sxLxx_x!  
if (queue[j]>queue[k]) 7r;7'X5  
break; Jmrs@  
SortUtil.swap(queue,j,k); nr7#}pzo  
k = j; ^0)Mc"&{  
} PP)iw@9j  
} RfH.WXi  
~QgyhJM_h=  
} TRP#b 7nC  
q.0Evr:  
} !~Vo'ykwx'  
4<}!+X7m  
SortUtil: > %h7)}U  
8=QOp[w   
package org.rut.util.algorithm; 701a%Jq_2  
P 4Vi~zMX  
import org.rut.util.algorithm.support.BubbleSort; KZy2c6XO;  
import org.rut.util.algorithm.support.HeapSort; Y-!~x0-H  
import org.rut.util.algorithm.support.ImprovedMergeSort; gZA[Sq  
import org.rut.util.algorithm.support.ImprovedQuickSort; NwAvxN<R(f  
import org.rut.util.algorithm.support.InsertSort; Dl=9<:6FW  
import org.rut.util.algorithm.support.MergeSort; 8(-V pU  
import org.rut.util.algorithm.support.QuickSort; #&zM.O1Q  
import org.rut.util.algorithm.support.SelectionSort; b-? wJSf|  
import org.rut.util.algorithm.support.ShellSort; H<_BnT #  
kw)( "SQ  
/** bfo..f-0/Y  
* @author treeroot #b~B 0:U  
* @since 2006-2-2 -55[3=#  
* @version 1.0 Lx%*IE|c  
*/ #1Zqq([@  
public class SortUtil { T_t5Tg~i[N  
public final static int INSERT = 1; aQ!QrTua-  
public final static int BUBBLE = 2; 7LEB ,bU  
public final static int SELECTION = 3; D5Zgi!  
public final static int SHELL = 4; 1oKF-";u(  
public final static int QUICK = 5; #(@!:f1  
public final static int IMPROVED_QUICK = 6; z$g cK>@l  
public final static int MERGE = 7; y;Ez|MS   
public final static int IMPROVED_MERGE = 8; @*?)S{8  
public final static int HEAP = 9; /my5s\;s|z  
,+w9_Gy2H  
public static void sort(int[] data) { -e_91W I  
sort(data, IMPROVED_QUICK); *Bfo"["0.  
} \c ')9g@  
private static String[] name={ `iHyGfm  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" @JW HG1qJ  
}; %G0J]QY{(x  
NS<C"O  
private static Sort[] impl=new Sort[]{ :1 *q}R   
new InsertSort(), vEy0DHEE  
new BubbleSort(), sNa Lz  
new SelectionSort(), ^bM\:z"M  
new ShellSort(), m^k$Z0  
new QuickSort(), V}3'0  
new ImprovedQuickSort(), v~8Cp C  
new MergeSort(), 8F>u6Y[P  
new ImprovedMergeSort(), |>^5G@e  
new HeapSort() yv[3&E?  
}; ]& 8c 45c  
~];r{IU  
public static String toString(int algorithm){ [}Q_T.4)E  
return name[algorithm-1]; p9>{X\eT:  
} ^fiJxU  
GLO%>&  
public static void sort(int[] data, int algorithm) { y+\kZIqX  
impl[algorithm-1].sort(data); ]z5kYU&  
} q t(+X  
Z8Iqgz7|y  
public static interface Sort { ?"F9~vx&G  
public void sort(int[] data); ol0i^d*9F  
} ^ps6\>=0cW  
&Fiesi!tET  
public static void swap(int[] data, int i, int j) { W [*Go  
int temp = data; Ln'y 3~@  
data = data[j]; ,.kJF4s&  
data[j] = temp; U[0x\~[$K  
} HVJqDF  
} c"O4=[N: ;  
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