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。 F tIcA"^N
插入排序: ~~OFymQ%?q
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package org.rut.util.algorithm.support; &L+uu',M0c
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import org.rut.util.algorithm.SortUtil; eUA]OF@
/** v.-DXQq
* @author treeroot #uhUZq
* @since 2006-2-2 .C%
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* @version 1.0 W\~^*ny
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*/ q,,
public class InsertSort implements SortUtil.Sort{ 90<g=B
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/* (non-Javadoc) )@N d3Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2IJK0w@
*/ ^<CVQ8R7
public void sort(int[] data) { p@Y=6 Bw
int temp; A`Z/B[)
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1|MRXK
} CQ!pt@|d
} 2FIL@f|\7z
} >NKJ@4Y
H$h#n~W~
} WA`A/`taT
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冒泡排序: D<S C
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g_Z
tDxz
package org.rut.util.algorithm.support; =fcg4h5(
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import org.rut.util.algorithm.SortUtil; YaC%69C'
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/** ^e.-Ji
* @author treeroot `6U!\D
* @since 2006-2-2 $v0,)AL i
* @version 1.0 /|0-O''
*/ =>$)F 4LW
public class BubbleSort implements SortUtil.Sort{ vY4sU@+V
tk"+ u_u w
/* (non-Javadoc) U)J5K
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m{/7)2.
*/ yKc-:IBb{u
public void sort(int[] data) { $h#sb4ek
int temp; ORExI.<`W
for(int i=0;i for(int j=data.length-1;j>i;j--){ ;k <dp7^
if(data[j] SortUtil.swap(data,j,j-1); bKQho31a'
} QUrPV[JQ
} uz8LF47@:-
} y{ur'**l
} z#*.9/y\^R
w*qj0:i5as
} n|i:4D
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选择排序: \9?[|m
z
A8)4nOXM
package org.rut.util.algorithm.support; s2<!Zb4
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import org.rut.util.algorithm.SortUtil; Su#0F0
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/** >i/jqT/
* @author treeroot bZnOX*y]
* @since 2006-2-2 S_ATsG*(
* @version 1.0 >e;-$$e
*/ jZXa
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public class SelectionSort implements SortUtil.Sort { >US*7m }
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/* ">H*InF
* (non-Javadoc) 5UEZpxnv
* zggnDkC5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =nEP:7~{
*/ 4V+bE$Wu
public void sort(int[] data) { 8Y($ F2
int temp; S6~y!J6Ok4
for (int i = 0; i < data.length; i++) { (@?mm
int lowIndex = i; !_Lmrs
for (int j = data.length - 1; j > i; j--) { v] m/$X2
if (data[j] < data[lowIndex]) { /$~1e7W
lowIndex = j; A}9Z%U
} f{sT*_at
} \v2!5z8|
SortUtil.swap(data,i,lowIndex); "5hk%T'
} =?i?-6M
} ;4F6
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} ;blL\|ch;
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Shell排序: Z\!,f.>g
g3^s_*A
package org.rut.util.algorithm.support; }[p{%:tP
}k^uup*{
import org.rut.util.algorithm.SortUtil; Ymut]`dX
iE%" Q? Q/
/** z:QDWH
* @author treeroot Hm-#Mpw
* @since 2006-2-2 5!c/J:z
* @version 1.0 RY-iFydPc
*/ ",#.?vT`
public class ShellSort implements SortUtil.Sort{ Al$z.i?R
X 4;U4pU#
/* (non-Javadoc) 3smkY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2#wnJdr6E
*/ )2f#@0SVL
public void sort(int[] data) { }Fe~XO`
for(int i=data.length/2;i>2;i/=2){ V DFgu
for(int j=0;j insertSort(data,j,i); E|O&bUMh
} N ,~O+
} ~D52b1f
insertSort(data,0,1); )V1XL
} CK_dEh2c
>M<3!?fW)
/** (Y1*Bs[l
* @param data }\a#e^-xQ+
* @param j +=tdgw/
* @param i DUOoTlp
*/ pbMANZU[
private void insertSort(int[] data, int start, int inc) { UHl3/m7g
int temp;
}x'*3zI
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); GS;GJsAs
} zJDHDr
} $AK
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} %YG?7PBB
w2LnY1A
} y_X6{}Ke
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快速排序: Ycr3$n]e
~Ntk-p
package org.rut.util.algorithm.support; $|$@?H>K
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import org.rut.util.algorithm.SortUtil; 6-U_TV
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/** v({O*OR
* @author treeroot J0sD?V|{1~
* @since 2006-2-2 o/AG9|()4
* @version 1.0 e!u]l
*/ ?2@^O=I
public class QuickSort implements SortUtil.Sort{ SioeIXU
a%#UF@I
/* (non-Javadoc) ;c 7I "?@z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9o@3$
*/ U9
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public void sort(int[] data) { t{})6
quickSort(data,0,data.length-1); J6 ~Sr
} b4L7M1l
private void quickSort(int[] data,int i,int j){ M;A_'h?Z
int pivotIndex=(i+j)/2; -}7$;QK&a
file://swap d9{lj(2P
SortUtil.swap(data,pivotIndex,j); 1_Yx]%g<
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int k=partition(data,i-1,j,data[j]); b(K"CL\p
SortUtil.swap(data,k,j); >}SEU-7&\
if((k-i)>1) quickSort(data,i,k-1); \h
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if((j-k)>1) quickSort(data,k+1,j); /-M:6
hFV,FBsAO
} 4"&-a1N
/** '#Wx@
* @param data cAR
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* @param i IMM;LC%rD9
* @param j b9H(w%7ucU
* @return |\(uO|)ju
*/ 9#DXA}
private int partition(int[] data, int l, int r,int pivot) { fU6YJs.H^8
do{ 3lF"nv
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Tm"H9
SortUtil.swap(data,l,r); CCTU-Xz/
} 4\z@Evm
while(l SortUtil.swap(data,l,r); h&4s%:_4
return l; ebA:Sq:w
} [8QK @5[
x%dny]O1;
} .fWy\r0
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改进后的快速排序: =-sTV\
[Uup5+MCv
package org.rut.util.algorithm.support; ^Iw$(
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import org.rut.util.algorithm.SortUtil; /
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/** xvl$,\iqE
* @author treeroot rbvk.:"^w
* @since 2006-2-2 x/,;:S
* @version 1.0 HXq']+iC
*/ R+LKa Z
public class ImprovedQuickSort implements SortUtil.Sort { |4\1V=(
GxdAOiq;
private static int MAX_STACK_SIZE=4096; P~ObxY|
private static int THRESHOLD=10; sq$v6x sl
/* (non-Javadoc) ;21D ^e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u99a"+
*/ Z6I|Y5#H
public void sort(int[] data) { V 20h\(\\
int[] stack=new int[MAX_STACK_SIZE]; U[wx){[|
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int top=-1; #/>TuJc
int pivot; R"W}\0k
int pivotIndex,l,r; REW[`MBQ
=:rg1wo"c
stack[++top]=0; d:)#-x*h7
stack[++top]=data.length-1; SAP/jD$5]>
bYsX?0T!p
while(top>0){ zYzV!s2^
int j=stack[top--]; ?.e,NHf
int i=stack[top--]; G)amng/
XPd mz !,b
pivotIndex=(i+j)/2; Z- feMM
pivot=data[pivotIndex]; P%2v(
Znb={hh
SortUtil.swap(data,pivotIndex,j); A.>mk598
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file://partition JL6$7h
l=i-1; ](Fey0@
r=j; C hF~
do{ qb? <u
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); .!3e$mhV
SortUtil.swap(data,l,r); wv9HiHz8gD
} G80N8Lm
while(l SortUtil.swap(data,l,r); '|[!I!WB`
SortUtil.swap(data,l,j); M=iTwK
h%/BZC^L]|
if((l-i)>THRESHOLD){ U}w'/:H
stack[++top]=i;
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stack[++top]=l-1; B0Df7jr%`>
} $cSUB
if((j-l)>THRESHOLD){ 0he3[m}Nr
stack[++top]=l+1; nXT`7
stack[++top]=j; _ $a3lR
} +4 k=Y
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Y_%
} z$Jm1l
file://new InsertSort().sort(data); G'JHimP2j
insertSort(data); JX&U?Z
} ji ?Hw
/** o h{>nwH
* @param data i.E2a)
*/ .8YxEnXw)(
private void insertSort(int[] data) { }5+^
int temp; iwF_'I$#N
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Ksx-Y"
} cQEUHhRg!
} B<d=;V
} QXb2jWz
&l+Qn'N
} p]kEH\
sh
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归并排序: {b!{~q
1ui)Hv=h*
package org.rut.util.algorithm.support; }PI:O%N;
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import org.rut.util.algorithm.SortUtil; |S!RQ-CF
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/** 72;'8
* @author treeroot ~uhW~bT
* @since 2006-2-2 Cfi4~ &
* @version 1.0 >` s"C
*/ t=Oq<r
public class MergeSort implements SortUtil.Sort{ p)SW(pS
"WKOlfPa
/* (non-Javadoc) ~9]vd|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J.UNw8z
*/ cM%?Ot,mK"
public void sort(int[] data) { !Q>xVlPVu
int[] temp=new int[data.length]; K+~?yOQj
mergeSort(data,temp,0,data.length-1); vm! y2
} We y*\@
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private void mergeSort(int[] data,int[] temp,int l,int r){ $6n
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int mid=(l+r)/2; &MH8~LSb
if(l==r) return ; HVa D
mergeSort(data,temp,l,mid); syr0|K[
mergeSort(data,temp,mid+1,r); :|(YlNUv
for(int i=l;i<=r;i++){ Bv7FZK3
temp=data; [0Xuo
} $]LS!@ Rm
int i1=l; vEfj3+e
int i2=mid+1; N'y<<tTA
for(int cur=l;cur<=r;cur++){ K#k/t"r
if(i1==mid+1) #H7
SLQr\
data[cur]=temp[i2++]; LZ)g&A(j?
else if(i2>r) 7@"X?uo%o
data[cur]=temp[i1++]; :WRD<D_4
else if(temp[i1] data[cur]=temp[i1++]; d*|RFU
else }36A eJ7L
data[cur]=temp[i2++]; i1x4$}
} $*eYiz3Ue
} ~+{*KPiD
Y-})/zFc
} /}1|'?P
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改进后的归并排序: uNI&U7_"
$W|JQ h
package org.rut.util.algorithm.support; G$a@}9V
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import org.rut.util.algorithm.SortUtil; V06*qQ[
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/** }-:B`:K&
* @author treeroot 6)sKg{H
* @since 2006-2-2 W!HjO;
* @version 1.0 @Nb/n
*/ 3~fi#{
public class ImprovedMergeSort implements SortUtil.Sort { Z4G%Ve[
}eSy]r[J
private static final int THRESHOLD = 10; ^; /~$
k% \;$u=%
/* a)W|gx6Y
* (non-Javadoc) dlvU=^G#G
* _f2rz+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JjZB!Lg=
*/ T x
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public void sort(int[] data) {
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int[] temp=new int[data.length]; .pZYPKMaE
mergeSort(data,temp,0,data.length-1); Up%XBA
} P4)Q5r
}s?3
private void mergeSort(int[] data, int[] temp, int l, int r) { .4ww5k>
int i, j, k; 6v{&, q
int mid = (l + r) / 2; [&~x5l
8\C
if (l == r) x]YzVJ =Y
return; YCP D+
if ((mid - l) >= THRESHOLD) Ib{#dhV
mergeSort(data, temp, l, mid); \x$`/
else v9J1Hha#
insertSort(data, l, mid - l + 1); -`ljKp
if ((r - mid) > THRESHOLD) \6GNKeN
mergeSort(data, temp, mid + 1, r); B{0]v-w
else W`LG.`JW
insertSort(data, mid + 1, r - mid); {
#B/4
851BOkRal4
for (i = l; i <= mid; i++) { % dFz[b
temp = data; N/lEfy<&g:
} R%LFFMVn
for (j = 1; j <= r - mid; j++) { <9H3d7%
temp[r - j + 1] = data[j + mid]; Xqe Qj}2kA
} }x$@j
int a = temp[l]; {pi_yr3
int b = temp[r]; QNE/SSL
for (i = l, j = r, k = l; k <= r; k++) { 1r4NP
if (a < b) { f3,LX]zKA
data[k] = temp[i++]; D',7 T=C
a = temp; )Dms9:
} else { K_t >T)K
data[k] = temp[j--]; l %zbx"%x
b = temp[j]; \+Qd=,!i(
} (e_p8[x
} [V
/f{y~{
} <Ed; tq
GLub5GrxR
/** @)MG&X
* @param data d|87;;X|u
* @param l Xa-TNnws?
* @param i [ZG>FJDl8
*/ N? S;v&q+
private void insertSort(int[] data, int start, int len) { t?^!OJ:L
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Q<szH1-
} $uwz`N:
} #v$wjqK5
} TSJeS`I
} 1foG*
4uE)*1
堆排序: |gk4X%o6
hb0)<^xu
package org.rut.util.algorithm.support; m' j1
OP= oSfa
import org.rut.util.algorithm.SortUtil; %Y/;jCY
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/** pi70^`@ 'B
* @author treeroot K)1Lg?j
* @since 2006-2-2 Z9h4 pd
* @version 1.0 $B9?>a|{A
*/ s7jNRY V
public class HeapSort implements SortUtil.Sort{ 37IHn6r\
r.u\qPT&
/* (non-Javadoc) K5<2jl3S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2ZbSdaM=
*/ $zhvI*0
public void sort(int[] data) { jpXbFWgN
MaxHeap h=new MaxHeap(); -=lL{oB1
h.init(data); <AJRU
l
for(int i=0;i h.remove(); $t6t 6<M)
System.arraycopy(h.queue,1,data,0,data.length); SMd[*9l
[
} R:'&>.AUw
\Lb wfd=
private static class MaxHeap{ %PPy0RZ^
7N5M=f.DS(
void init(int[] data){ p.MLKp-'
this.queue=new int[data.length+1]; 2=<,#7zlJ
for(int i=0;i queue[++size]=data; T1?9E{bC8A
fixUp(size); Jv%)UR.]
} [P6A$HC<
} 5yJ~ q
cN2Pl%7
private int size=0; QYj 4D
xrlyph5mE
private int[] queue; qauvwAMuX
Q?>*h xzoP
public int get() { o8A8fHl
return queue[1]; )-iUUak
} S,'ekWVD
Aj O{c=d
public void remove() { ht+wi5b
SortUtil.swap(queue,1,size--); 8MU7|9 Q
fixDown(1); 6/'X$}X
} 3fE0cVG*
file://fixdown juu"V]Q1
private void fixDown(int k) { @.dM1DN)
int j; LF(S"Of
while ((j = k << 1) <= size) { OzH\YN
if (j < size %26amp;%26amp; queue[j] j++; ^4[QX
-_2
if (queue[k]>queue[j]) file://不用交换 ljg6uz1v%
break; +,i_G?eX
SortUtil.swap(queue,j,k); W=#jtU`:5
k = j; }`2+`w%uZ
} Ir-
1@_1Q
} V6Of(;r
private void fixUp(int k) { A-^B?E
while (k > 1) { _? $')P|
int j = k >> 1; a@? Bv
if (queue[j]>queue[k]) UpiZd/K
break; >Fe=PRs
SortUtil.swap(queue,j,k); wSALK)T1{
k = j; a94nB
} ~X;sa,)L1+
} ,z((?h,nm
'&]6(+I>
} 27F:-C~.9
,yfJjV*I
} G he@m6|D
O=u.J8S2
SortUtil: +\vN#xDz
20Rm|CNH?
package org.rut.util.algorithm; #S|On[Q!
MGo`j:0
import org.rut.util.algorithm.support.BubbleSort; L'"od;(6R
import org.rut.util.algorithm.support.HeapSort; k6;pi=sYNW
import org.rut.util.algorithm.support.ImprovedMergeSort; I
wu^@
import org.rut.util.algorithm.support.ImprovedQuickSort; Ax4;[K\Q
import org.rut.util.algorithm.support.InsertSort; 1u*
(=!
import org.rut.util.algorithm.support.MergeSort; E/d\ebX|
import org.rut.util.algorithm.support.QuickSort; Lf Y[Z4
import org.rut.util.algorithm.support.SelectionSort; 8nSw7:z
import org.rut.util.algorithm.support.ShellSort; | fn%!d`2
<1U *{y
/** n8&x=Z}Xs
* @author treeroot MR* %lZpB
* @since 2006-2-2 hSk
* @version 1.0 n+'s9
*/ L\t!)X-4
public class SortUtil { uVw|jj
public final static int INSERT = 1; sgB|2cj;j
public final static int BUBBLE = 2; :O*62olC5
public final static int SELECTION = 3; z)*\njYe
public final static int SHELL = 4; H|cxy?iJ
public final static int QUICK = 5; m&Y?]nbq
public final static int IMPROVED_QUICK = 6; d5=yAn-+=
public final static int MERGE = 7; (=s%>lW|
public final static int IMPROVED_MERGE = 8; DEenvS`,P
public final static int HEAP = 9; cdfnM% `>\
V##T G0
public static void sort(int[] data) { ,\PTn7_
sort(data, IMPROVED_QUICK); <)gTi759h)
} xQzXl
private static String[] name={ @N\
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"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" []H0{a2{<
}; 42
rIIJ1A
U9//m=_
private static Sort[] impl=new Sort[]{ ,j[1!*Z_[
new InsertSort(), 5S #6{Y =
new BubbleSort(), i#Fe`Z ~J
new SelectionSort(), l37l| xp~
new ShellSort(), #Xun>0
new QuickSort(), *18J$
new ImprovedQuickSort(), TfA;4^
new MergeSort(), 6IL-S%EGK1
new ImprovedMergeSort(), {?uswbk.
new HeapSort() 3T@`VFbE
}; UeSPwY
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public static String toString(int algorithm){ d#HN'(2t
return name[algorithm-1]; z%/<|`
7
} h&IF?h
A@I3:V
public static void sort(int[] data, int algorithm) { G4,BcCPQ
impl[algorithm-1].sort(data); g_MxG!+(V
} ch0x*[N@
9h^TOZK)
public static interface Sort { r Ww.(l
public void sort(int[] data); RS
Vt
} 259:@bi!y
lJBZ0
public static void swap(int[] data, int i, int j) { ;UWp0d%
int temp = data; KU;m.{
data = data[j]; M
cbiO)@I
data[j] = temp; 6NzS <
} AKKVd%
P(
} /d1V&Lj