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。 eR!G[C w-
插入排序: qS8B##x+=
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package org.rut.util.algorithm.support; 'i>xf
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import org.rut.util.algorithm.SortUtil; v+1i=s2$
/** K6pR8z*?
* @author treeroot D>wZ0p b-
* @since 2006-2-2 :wgfW .w
* @version 1.0 -g`IH-B
*/ Q* O<@
public class InsertSort implements SortUtil.Sort{ v@u<Ww;=@
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/* (non-Javadoc) mgkyC5)d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pvXcLR)L+3
*/ NyPd5m:
public void sort(int[] data) { }C(5 -7
int temp; "<l<&
qp
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); G5'_a$
} ]7qiUdxt:
} fUcLfnr
} d34Y'r
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} .]76!(fWZ
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冒泡排序: Rs$5PdH
(a{ZJI8_
package org.rut.util.algorithm.support; !E&MBAKy
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import org.rut.util.algorithm.SortUtil; Rf[V)x
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/** %%g-GyP
1
* @author treeroot {K7YTLWY
* @since 2006-2-2 0rzVy/Z(
* @version 1.0 xFsmf< Vm
*/ $3\yf?m}q
public class BubbleSort implements SortUtil.Sort{ [!?wyv3
T{S4|G1R6
/* (non-Javadoc) VO`"<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bsO@2NP'
*/ L0&S0HG
public void sort(int[] data) { ^,7=X8Su
int temp; YBSl-G'
for(int i=0;i for(int j=data.length-1;j>i;j--){ d\Jji 6W
if(data[j] SortUtil.swap(data,j,j-1); ,d
7Z
} LV.&>@*
} [b`6v`x
} ')nnWlK
} ^Rmoz1d
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} 4 iH&:Al
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选择排序: Bxv8RB
J E)J<9gf
package org.rut.util.algorithm.support; u7muaSy
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import org.rut.util.algorithm.SortUtil; }aZrou3E
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/** +"L$ed(=nJ
* @author treeroot 0>Fqx{!heq
* @since 2006-2-2 Vj!WaN_
* @version 1.0 G?[-cNdk
*/ BW71 s
public class SelectionSort implements SortUtil.Sort { QGPR.<D)B
!0dX@V'r
/* K^ 6+Ily
* (non-Javadoc) v>at/ef
* .;slrg(5F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ed=}PrE
*/ X')S;KW
public void sort(int[] data) { $,P\)</VR
int temp; '49L(>.
for (int i = 0; i < data.length; i++) { /c^e&D
int lowIndex = i; 46dc.Yi
for (int j = data.length - 1; j > i; j--) { dzxI QlP
if (data[j] < data[lowIndex]) { 0P9Wy!f7
lowIndex = j; VR v02m5
} AM?Ec1S
#a
} lJj&kVHb
SortUtil.swap(data,i,lowIndex); MOLO3?H(
} #HDesen
} !Mil?^
tw86:kYEz
} S.]MOB dt
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Shell排序: %Qd3BZ
6!RikEAh
package org.rut.util.algorithm.support; -aN":?8(G
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import org.rut.util.algorithm.SortUtil; 3k{c$x}
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/** L?.7\a@
* @author treeroot VIYV92[
* @since 2006-2-2 wWFW,3b
* @version 1.0 ) MBS
*/ "VQ|Ed
public class ShellSort implements SortUtil.Sort{ M8Juykw
gA:[3J,[;
/* (non-Javadoc) O=`o'%K<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iUCwKpb9
*/ @tQ2E}psP,
public void sort(int[] data) { e/P4mc)
for(int i=data.length/2;i>2;i/=2){ b_mWu@$
for(int j=0;j insertSort(data,j,i); 2*YP"Ryh
} \6 LcV ik
} {9'hOi50
insertSort(data,0,1); [,nfAY
} J=VyyUB
kdd7Xbw-
/** kDg{>mf
* @param data X}?ESjZJ
* @param j (NM6micc
* @param i {DS\!0T-X
*/ dh?S[|='
private void insertSort(int[] data, int start, int inc) { h=Oh9zsz8
int temp; X{s/``n
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); (L:`ojiU
} 'XEK&Yi1
} 1>yha
j(K
} taixBNv
Z]p8IH%~92
} v0u\xX[H;
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快速排序: oc =tI@W
s8yCC#H"
package org.rut.util.algorithm.support; `:R-[>5P8
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import org.rut.util.algorithm.SortUtil; v2(U(Tt
]'E}
/** 9yDFHz w
* @author treeroot p/4S$
j#Tn
* @since 2006-2-2 ,?fN#gc :
* @version 1.0 rQ
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*/ $Llvp bl
public class QuickSort implements SortUtil.Sort{ 2!{N[*)
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/* (non-Javadoc) <gR`)YF7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8 `o{b"l+
*/ Gk{W:866
public void sort(int[] data) { V!H(;Tuuo
quickSort(data,0,data.length-1); |O%:P}6c
} O<bDU0s{M
private void quickSort(int[] data,int i,int j){ z,M'Tr.1|
int pivotIndex=(i+j)/2; )2#vhMpdN
file://swap nxD'r
SortUtil.swap(data,pivotIndex,j); h1E
PaL
FBcm;cjH
int k=partition(data,i-1,j,data[j]);
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SortUtil.swap(data,k,j); BZ2nDW*%
if((k-i)>1) quickSort(data,i,k-1); }]tFz}E\
if((j-k)>1) quickSort(data,k+1,j); l~4_s/
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} G^ K*+
/** hzW{_Q.|?
* @param data >@z d\}@W
* @param i j,Pwket
* @param j .Dc28F~t
* @return !W0P`i<
*/ Jm%mm SYK
private int partition(int[] data, int l, int r,int pivot) { ofVEao
do{ OA!R5sOz"
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); vP-3j
SortUtil.swap(data,l,r); VPdwSW[eM
} ^P]?3U\nj
while(l SortUtil.swap(data,l,r); 7:#
return l; (/('nY
} 2B5A!?~>
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} umqLKf=x!
N\c&PS
改进后的快速排序: 9/FG,9
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package org.rut.util.algorithm.support; =rtS#u
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import org.rut.util.algorithm.SortUtil; 4c
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/** ]s f2"~v
* @author treeroot 7 kEx48
* @since 2006-2-2 Oi6f8*,
* @version 1.0 h=!M6yap<
*/ :
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public class ImprovedQuickSort implements SortUtil.Sort { LG"c8Vv&)~
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private static int MAX_STACK_SIZE=4096; \nrgAC-b
private static int THRESHOLD=10; =DGn,i9
/* (non-Javadoc) hEVjeC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bcUC4g\9N
*/ t1G1(F#&%
public void sort(int[] data) { "w(N62z/
int[] stack=new int[MAX_STACK_SIZE]; @gH(/pFX
@X3 gBGY)
int top=-1; Y>xi|TWN
int pivot; nXv 7OEpTx
int pivotIndex,l,r; XulaPq
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stack[++top]=0; y{@P1{
stack[++top]=data.length-1; )!'Fa_$ e
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while(top>0){ w906aV*s
int j=stack[top--]; 0m]~J_
int i=stack[top--]; A*G
)CG
%~][?Y ><
pivotIndex=(i+j)/2; 3Gc ,I:\
pivot=data[pivotIndex]; ){+.8KI
zJz82jMm
SortUtil.swap(data,pivotIndex,j); :D<:N*9i
Oqd"0Qt-
file://partition HyZVr2
l=i-1; x{=[w`
r=j; ERUs0na]
do{ z0\;m{TH
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); GS$ZvO
SortUtil.swap(data,l,r); c-[Q,c
} aQl?d<|+lk
while(l SortUtil.swap(data,l,r); 7( yXsVq
SortUtil.swap(data,l,j); }f<fgY
Uuwq7oFub
if((l-i)>THRESHOLD){ +vSCR(n
stack[++top]=i; |h#DL$
stack[++top]=l-1; JZs|~@
} %KbBH:z05
if((j-l)>THRESHOLD){ t-.2+6"\
stack[++top]=l+1; qf_hb
stack[++top]=j; *37LN
}
YRg=yVo2
d9`3EP)n
} 1mT|o_K{ T
file://new InsertSort().sort(data); }2-[Ki yv
insertSort(data); z*Myokhf
} %E4$ZPSW
/** 7$g*N6)Q
* @param data ^U-vD[O8
*/ Ymwx(Pm
private void insertSort(int[] data) { Sf+(1_^`t
int temp; I>A^5nk
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); bs<WH`P
} Y{%4F%Oy
} R=][>\7]}
} Qh)|FQ[s$r
!L&=?CX
} Zp/qs
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归并排序: Uq9,(tV`6g
8L]gQ g
package org.rut.util.algorithm.support; {B'Gm]4
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import org.rut.util.algorithm.SortUtil; ^q4l4)8jX
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/** W
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* @author treeroot w,M1`RsK
* @since 2006-2-2 L #t-KLJ
* @version 1.0 o{ ,ba~$.w
*/ R-g>W
public class MergeSort implements SortUtil.Sort{ M!xm1-,[
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/* (non-Javadoc) 5@w'_#!)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <Z\MZ&{k{*
*/ xm<5S;E5U4
public void sort(int[] data) { "-0pz\a
int[] temp=new int[data.length]; jw`&Np2Q
mergeSort(data,temp,0,data.length-1); pl
jV|.?
} {u(}ED#p
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private void mergeSort(int[] data,int[] temp,int l,int r){ (&9DB
int mid=(l+r)/2; #U",,*2
if(l==r) return ; m~= ]^e
mergeSort(data,temp,l,mid); DuTlYXM2^
mergeSort(data,temp,mid+1,r); ?`vM#)
for(int i=l;i<=r;i++){ *@-q@5r}!
temp=data; 4=?Ok":8
} 8>% jZ%`a
int i1=l; /o<}]]YBF
int i2=mid+1; ,wry u|7"$
for(int cur=l;cur<=r;cur++){ ;[WSf{k
if(i1==mid+1) O4b-A3:
data[cur]=temp[i2++]; w*&n(zJF>
else if(i2>r) <2o.,2?G
data[cur]=temp[i1++]; g( @$uJ
else if(temp[i1] data[cur]=temp[i1++]; P+*rWJ8gQ
else y]z)jqX<
data[cur]=temp[i2++]; ?1-n\ka
} aIzp\$NWVK
} [#STR=_f
)+jK0E1
} g9FVb7In_
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改进后的归并排序: Rk437vQD,
\dp9@y[^
package org.rut.util.algorithm.support; -7Aw
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import org.rut.util.algorithm.SortUtil; }\`-G+i{W
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/** /JK-}E
* @author treeroot /VhE<}OtH
* @since 2006-2-2 ;EE&~&*w
* @version 1.0 fwnYzd3
*/ dCoi>PO
public class ImprovedMergeSort implements SortUtil.Sort { a.Rp#}f
1,%#O;ya
private static final int THRESHOLD = 10; RF,=bOr19
3IJI5K_
/* QigoRB!z#9
* (non-Javadoc) Ads<-.R
* ^;Hi/KvM\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FkJ>]k
*/ !Z+*",]_
public void sort(int[] data) { xu_XX#9?b
int[] temp=new int[data.length]; U'h[{ek
mergeSort(data,temp,0,data.length-1); ard3yNQt
} 'n>3`1E,
(8@hF#N1
private void mergeSort(int[] data, int[] temp, int l, int r) { lE2wkY9^/
int i, j, k; Oc"'ay(g
int mid = (l + r) / 2; :~0^ib<v;
if (l == r) 9(N)MT5F
return; [o[v"e\w
if ((mid - l) >= THRESHOLD) cmr6,3_
mergeSort(data, temp, l, mid); njwR~ aL`|
else [A%e6
insertSort(data, l, mid - l + 1); @KXz4PU
if ((r - mid) > THRESHOLD) 08K.\3
mergeSort(data, temp, mid + 1, r); 3@Zz-~4Td
else V'.eesN
insertSort(data, mid + 1, r - mid); bWC~Hv
1EAVMJ
for (i = l; i <= mid; i++) { jy__Y=1}
temp = data; @E"+qPp.3
} ;@7#w
for (j = 1; j <= r - mid; j++) { p^zEfLTU
temp[r - j + 1] = data[j + mid]; %<ptkZK#
} ^7s6J{<
int a = temp[l]; :#W>SO
int b = temp[r]; H s4zJk
for (i = l, j = r, k = l; k <= r; k++) { P^_d$
if (a < b) { r"u(!~R
data[k] = temp[i++]; 'Qs3
a = temp; !s[j1=y
} else { 6(<~1{
X%
data[k] = temp[j--]; ]=86[A-2N
b = temp[j]; UTK.tg
} ev;5?9\E
} "- j@GCme
} I3zitI;
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/** lc$@Jjg9
* @param data uZ2v;]\Y6
* @param l 9tc@
* @param i &h4Z|h[01
*/ l=-dK_I?
private void insertSort(int[] data, int start, int len) { \")YKN=W
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 9h,yb4jPP
} v4k=NH+w
} : DX/r
} [[66[;
} t6L^
#\'
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堆排序: ">D(+ xr!)
|Qt`p@W
package org.rut.util.algorithm.support; c;|&>Fp
pqQdr-aR=
import org.rut.util.algorithm.SortUtil; <>*''^
]-s`#
/** _9O }d
* @author treeroot i2ml[;*,N
* @since 2006-2-2 _qzo):G.s
* @version 1.0 4Tzu"y
*/ B=Jd%Av
public class HeapSort implements SortUtil.Sort{ 0.Ol@fO
=<FZ{4
/* (non-Javadoc) 3d)+44G_)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c"sw@<HG
*/ _OxnHf:|
public void sort(int[] data) { .&yWHdQC:
MaxHeap h=new MaxHeap(); (27F
h.init(data); jf)JPa_
for(int i=0;i h.remove(); $evuPm8G
System.arraycopy(h.queue,1,data,0,data.length); tSXjp
} _Fh0^O@
p2NB~t7Z
private static class MaxHeap{ X8l1xD
Q-dHR
i
void init(int[] data){ f?<M3P
this.queue=new int[data.length+1]; $E~Lu$|
for(int i=0;i queue[++size]=data; CL}I:/zRB
fixUp(size); n$![b_)*
} DwrCysIK
} ?e_}X3{
R?9Plzt5
private int size=0; WlLZtgq
k;:u| s8NS
private int[] queue; 36Z`.E>~L
^nm!NL{z^
public int get() { Boj{+rE0
return queue[1]; AO 7qs:+
} cSs/XJZ
S~(VcC$K
public void remove() { -JO46
#m
SortUtil.swap(queue,1,size--); o(SJuZC/U
fixDown(1); Z-p^3t'{
}
&lfF!
file://fixdown Pymh^i
private void fixDown(int k) { p*&LEjaVM4
int j; uy-Ncy
while ((j = k << 1) <= size) { xo 'w+Av
if (j < size %26amp;%26amp; queue[j] j++; w*ktx{
if (queue[k]>queue[j]) file://不用交换 &fy8,}
break; yExyx?j.
SortUtil.swap(queue,j,k); m}'@S+k^
k = j; Rw=E_q{
} Joo)GIB
} @k #y-/~?
private void fixUp(int k) { ]<_!@J6k
while (k > 1) { %C][E^9
int j = k >> 1; >]|^Ux,WZ
if (queue[j]>queue[k]) dvWlx]'
break; K$v Rk5U
SortUtil.swap(queue,j,k); +bd{W]={
k = j; MGC0^voe
} -bu. *=
} zr9Pm6Rl
&E'>+6
} fU~y481A
S_ -mmzC(
} _,?H rL9
6)<o O(
SortUtil: -Izg&u &
jW$f(qAbm
package org.rut.util.algorithm; hgr ,v"
z'K7J'(R
import org.rut.util.algorithm.support.BubbleSort; G}xBYc0b
import org.rut.util.algorithm.support.HeapSort; N)y;owgo
import org.rut.util.algorithm.support.ImprovedMergeSort; l
YA+k5
import org.rut.util.algorithm.support.ImprovedQuickSort; %7wzGtM]ps
import org.rut.util.algorithm.support.InsertSort; k#+^=F^)I
import org.rut.util.algorithm.support.MergeSort; cCKda3v!O
import org.rut.util.algorithm.support.QuickSort; *ik)>c_
import org.rut.util.algorithm.support.SelectionSort; B=/=U7T
import org.rut.util.algorithm.support.ShellSort; &>4$ [m>n
9U1!"/F
/** so&3A&4cL
* @author treeroot (qONeLf%
* @since 2006-2-2 os ud
* @version 1.0 :*%\i' $!/
*/ e/D\7Pf
public class SortUtil { ,ZW.P`
public final static int INSERT = 1; a#GqJ?nY
public final static int BUBBLE = 2; (xJBN?NRO
public final static int SELECTION = 3; "MP{z~Mmj
public final static int SHELL = 4; \`9|~!,Ix7
public final static int QUICK = 5; `CouP-g.
public final static int IMPROVED_QUICK = 6; 9>, \QrrH
public final static int MERGE = 7; *<5lx[:4/x
public final static int IMPROVED_MERGE = 8; iZ;jn8
public final static int HEAP = 9; sh3}0u+
Ec/+ 9H6g
public static void sort(int[] data) { BU\NBvX$
sort(data, IMPROVED_QUICK); cJ{P,K
} -;.fU44O[#
private static String[] name={ }(O
kl1
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 1L9
<1
}; EHJc*WFPU-
Qn cS&
private static Sort[] impl=new Sort[]{ E0Xu9IW/A
new InsertSort(), S?WUSx*N
new BubbleSort(), [beuDZA
new SelectionSort(), zMg^2{0L
new ShellSort(), ~2;y4%K
new QuickSort(), =
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new ImprovedQuickSort(), ;b2>y>?[
new MergeSort(), RaqrVC
new ImprovedMergeSort(), T U6EE
new HeapSort() ~a)20
}; r|$g((g
KiHAm|,
public static String toString(int algorithm){ 7cQw?C
return name[algorithm-1]; ht!:e>z&4
} goWt!,&f
}E_zW.{!
public static void sort(int[] data, int algorithm) { j+v)I=
impl[algorithm-1].sort(data); X,Q(W0-6$u
} %j`]x
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,FPgs0rrS
public static interface Sort { !LESRh?
public void sort(int[] data); ~$Yuxo
} p`C5jfI
05DtU!3O
public static void swap(int[] data, int i, int j) { ]sIFK
int temp = data; ]z@]Fi33Y
data = data[j]; R|yTUGY
data[j] = temp; ,peFNpi
} LDNUywj@w
} `Q[$R&\