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。 nXFPoR)T
插入排序: }I>h<O
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package org.rut.util.algorithm.support; sm9/sX!
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import org.rut.util.algorithm.SortUtil; !Un&OAy.!
/** rS&"UH?c7
* @author treeroot `m7w%J.> n
* @since 2006-2-2 ~H~iKl}|7
* @version 1.0 [,86||^
*/ SL ) ope
public class InsertSort implements SortUtil.Sort{ i4s_:%+
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/* (non-Javadoc) yh:Wg$qx
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SQ0?M\D7
*/ }K'gjs/N;
public void sort(int[] data) { |rr<4>)X
int temp; %]1.)j
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); vtu!* 7m
} X5w_ }Nhe
} ])tUXU>
} }{y(&Oy3Y
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} 2.PZtl
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冒泡排序: K);)$8K
3GVS-?
package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; 4157!w'\y
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/** V AnP3:
* @author treeroot >Sc/E}3
* @since 2006-2-2 "%E<%g
* @version 1.0 KbTd`AIL
*/ unD.t
public class BubbleSort implements SortUtil.Sort{ u/ZV35z
4];<`
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/* (non-Javadoc) ,d`6
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YHQvx_0yP
*/ tRu j}n+x
public void sort(int[] data) { oGvk,mh"(
int temp; e~P4>3
for(int i=0;i for(int j=data.length-1;j>i;j--){ mIh >8))E
if(data[j] SortUtil.swap(data,j,j-1); ?(R!BB
} A!uO7".E
} VqL#w<A%
} "J"RH:$v
} H9%[!
RF
v9
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} /hp
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选择排序: Vf#g~IOI
o*sss
package org.rut.util.algorithm.support; [!ilcHE)
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import org.rut.util.algorithm.SortUtil; ?"-1QG
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/** 1EAQ ~S!2
* @author treeroot tV"Jh>Z
* @since 2006-2-2 ?XllPnuKt%
* @version 1.0 M.3ULt8
*/ JA2oy09G
public class SelectionSort implements SortUtil.Sort { O<()T6
^@HWw@GA
/* D5"Xjo*
* (non-Javadoc) MN^d28^/
* m(KBg'kQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w\lc;4U
*/ \N[2-;[3
public void sort(int[] data) { >J) 9&?
int temp; Uu[dx}y
for (int i = 0; i < data.length; i++) { \5P 5N]]
int lowIndex = i; x T1MW
for (int j = data.length - 1; j > i; j--) { X4CiVV
if (data[j] < data[lowIndex]) { j.kv!;Rj=
lowIndex = j; ^y.|KA3[
} jp880}
} sv)4e)1
SortUtil.swap(data,i,lowIndex); vlC$0P
} I3;03X<2
} LbUH`0:%t
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} M3!4,_!~
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Shell排序: '37 <+N
'OI(MuSn
package org.rut.util.algorithm.support; UK5u"@T
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import org.rut.util.algorithm.SortUtil; p}p}!M|
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/** 3FG'A[x3O
* @author treeroot hdDL92JVg
* @since 2006-2-2 )(+q~KA}
* @version 1.0 _sAcvKH
*/ sL],@z8<k
public class ShellSort implements SortUtil.Sort{ {RN-rF3w
sB0m^Y'
/* (non-Javadoc) JH._/I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `_e5pW=:>
*/ 2$b JMx>
public void sort(int[] data) { wGgeK,*_
for(int i=data.length/2;i>2;i/=2){ a[jNT$8
for(int j=0;j insertSort(data,j,i); *nB-]
w/
} "#P#;]\ `
} tQE<'94A
insertSort(data,0,1); "2ZuI;w
} L| ]fc9W:
2"EaF^?\
/** -ND1+`yD
* @param data !@>q^_Gez
* @param j nCDG PzJ
* @param i D<'G\#n3I=
*/ C6A!JegU
private void insertSort(int[] data, int start, int inc) { )Lg~2]'?j
int temp; C9 j{:&
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 9L>73P{_
} .UYhj8
} 3QCCX$,
} qOflvf
S2
MJb
} z\-/R9E/5-
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快速排序: '.]<lh!
LKgo(&mY
package org.rut.util.algorithm.support; M_h8{
+z<GycIc?K
import org.rut.util.algorithm.SortUtil; y
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JC#5CCz
/** =w7+Yt
* @author treeroot \|C*b<
* @since 2006-2-2 T0N6k acl
* @version 1.0 wW7# M
*/ e4FR)d0x
public class QuickSort implements SortUtil.Sort{ a H\A
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/* (non-Javadoc) (5e4>p&+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gF:|j(
*/ qq"0X! w
public void sort(int[] data) { =1\mLI}@
quickSort(data,0,data.length-1); ?8FJMFv;4%
} fo~>y
private void quickSort(int[] data,int i,int j){ '4}8WYKQ
int pivotIndex=(i+j)/2; +1^L35\@
file://swap y?Pw6;e.
SortUtil.swap(data,pivotIndex,j); {a]u
4'"WD0
int k=partition(data,i-1,j,data[j]); =R)w=ce
SortUtil.swap(data,k,j); 8?ip,Q\
if((k-i)>1) quickSort(data,i,k-1); 9\uBX.]x
if((j-k)>1) quickSort(data,k+1,j); [#%@,C
u/ri
{neP{
} 6!H,(Z]j
/** ?kS#g
* @param data `A<2wd;
* @param i K{:[0oIHc
* @param j x,HD,VQR/
* @return 55/)2B2J
*/ KE-0/m4yJ
private int partition(int[] data, int l, int r,int pivot) { )hC3'B/[Y
do{ e/x6{~ju^N
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); mV+9*or
SortUtil.swap(data,l,r); UG3}|\.u
} tT+W>oA/M
while(l SortUtil.swap(data,l,r); F<b/)<Bm=
return l; Rh%@N.Z*
} _w2%!+'
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} gAgF$H .
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改进后的快速排序: _jH./ @G
iUs_)1
package org.rut.util.algorithm.support; 0"Zxbgu)
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import org.rut.util.algorithm.SortUtil; R ^ZOcONd-
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/** cPkP/3I]h
* @author treeroot S VypR LVB
* @since 2006-2-2 5}a.<
* @version 1.0 K+~1z>&
*/ RKp9[^/?
public class ImprovedQuickSort implements SortUtil.Sort { ~[=d{M!$W
D=K{(0{"/,
private static int MAX_STACK_SIZE=4096; G
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private static int THRESHOLD=10; v`S ;.iD
/* (non-Javadoc) O$N;a9g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;.^!
7j
*/ DXQ]b)y+N
public void sort(int[] data) { c}s#!|E0v
int[] stack=new int[MAX_STACK_SIZE]; dH'02[;
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int top=-1; Y#+Ws0wN
int pivot; S(/^_Y
int pivotIndex,l,r; +VL:O]`DJ
[("2=Uz;
stack[++top]=0; .m.Ga|;
stack[++top]=data.length-1; O8Z+g{
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while(top>0){ DK20}&RQ
int j=stack[top--]; :4)(Qa(
int i=stack[top--]; ?f6SKC
F6}YM|
pivotIndex=(i+j)/2; cP\ZeG#<
pivot=data[pivotIndex]; !tb!%8{~
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SortUtil.swap(data,pivotIndex,j); g yegdky3
ryqu2>(
file://partition ;j
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l=i-1; nM *}VI
r=j; M+%qVwp
do{ x U"g~hT
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Pz\ByD
SortUtil.swap(data,l,r); 4iZg2"[D
} CugZ!>;^
while(l SortUtil.swap(data,l,r); ?9>wG7cps7
SortUtil.swap(data,l,j); ]68FGH
`\'V]9wS
if((l-i)>THRESHOLD){ PHJHW#sv
stack[++top]=i; C6Cr+TScH
stack[++top]=l-1; Ikw.L
} d[ _@l
if((j-l)>THRESHOLD){ 0g HV(L?
stack[++top]=l+1; lr?SL\D
stack[++top]=j; 2R,8q0qR:
} X|D-[|P
7SNdC8GZ~
} 4*IXBi7%
file://new InsertSort().sort(data); h<bhH=6~
insertSort(data); ~gHn>]S0
} P 00%EB
/** Z9|A"[b
* @param data s0:M'wA
*/ 9JX@ck
private void insertSort(int[] data) { {:3:GdM6
int temp; %3AE2"
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); pvb&vtp
}
1.PN_9%
} ?\(qA+iP0
} m*YfbOhs#
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} #)@#Qd
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归并排序: sKJr34
0-;>O|U3
package org.rut.util.algorithm.support; =vvd)og
lrL:G[rt
import org.rut.util.algorithm.SortUtil; Dr[;\/|#
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/** 5#s],h
* @author treeroot ^q#[oO
* @since 2006-2-2 2,^> lY
* @version 1.0 qkz|r?R)
*/ [h !i{QD
public class MergeSort implements SortUtil.Sort{ X Q
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cB36w$n8
/* (non-Javadoc) "K$c 9Z8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {qU;;`P]|
*/ X6_
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public void sort(int[] data) { yla-X|>
int[] temp=new int[data.length]; W7gY$\1<&
mergeSort(data,temp,0,data.length-1); 4:^MSgra
} pLCS\AUTsv
uB3VCO.;_
private void mergeSort(int[] data,int[] temp,int l,int r){ ZJc{P5a1J
int mid=(l+r)/2; )?7/fF)@|
if(l==r) return ; H1L)9oa
mergeSort(data,temp,l,mid); xx|D#Z}G
mergeSort(data,temp,mid+1,r); uK`gveY
for(int i=l;i<=r;i++){ >d &0a:
temp=data; D_[NzCv<-
} <SQR";
int i1=l; "\T-r 2
int i2=mid+1; =wW M\f`=
for(int cur=l;cur<=r;cur++){ |=0w_)Fa]
if(i1==mid+1) Bha("kG
data[cur]=temp[i2++]; @YQ*a4`
else if(i2>r) XjP&
data[cur]=temp[i1++]; /#SfgcDt
else if(temp[i1] data[cur]=temp[i1++]; 9_F&G('V{a
else ]7>#YKH.
data[cur]=temp[i2++]; l6 }+,v@#
} %<+uJ'pj
} 3$q#^UvD
GDe,n
} 4b((,u$
@"A
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改进后的归并排序: D&I/Tbc
/$]S'[5uF
package org.rut.util.algorithm.support; "
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import org.rut.util.algorithm.SortUtil; "C&>$h_%
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/** bvrXz-j
* @author treeroot ^#mWV
* @since 2006-2-2 2boyBz}=S
* @version 1.0 }9W[7V?
*/ Vdefgq@<
public class ImprovedMergeSort implements SortUtil.Sort { Y`{62J8oy
l&qyLL2
w
private static final int THRESHOLD = 10; JZ![:$:
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/* 6-tIe_5
* (non-Javadoc) zPybPE8
* j~V$q/7S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RticGQy&5
*/ @ext6cFe3<
public void sort(int[] data) { r&B0-7r
int[] temp=new int[data.length]; [!wJIy?,
mergeSort(data,temp,0,data.length-1); iY?#R&
} _&U#*g
reArXmU<u
private void mergeSort(int[] data, int[] temp, int l, int r) { 2Xk;]-T!
int i, j, k; LAnC8O
int mid = (l + r) / 2; 9`
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if (l == r) @t1pB]O:
return; V|B4lGS&
if ((mid - l) >= THRESHOLD) tKcC{
mergeSort(data, temp, l, mid); G4P*U3&p
else K1A<m=If
insertSort(data, l, mid - l + 1); ]+m2pEO
if ((r - mid) > THRESHOLD) U1Fo #L
mergeSort(data, temp, mid + 1, r); >i >|]
else 8#tuB8>
insertSort(data, mid + 1, r - mid); oF]]Pl{W
I=
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for (i = l; i <= mid; i++) { koS?UYF`
temp = data; QdcuV\B}
} &4} =@'G@
for (j = 1; j <= r - mid; j++) { ot2zY
dWAz
temp[r - j + 1] = data[j + mid]; 6__!M
} *QWOWg4w
int a = temp[l]; :[(%4se
int b = temp[r]; v0! 1W
for (i = l, j = r, k = l; k <= r; k++) { \}W3\To_
if (a < b) { T?d}IDv1
data[k] = temp[i++]; cN?/YkW?]
a = temp; %+,*$wk#*
} else { /5"T46jD
data[k] = temp[j--]; d0ht*b
b = temp[j]; !X$19"
} H
lM7^3(&
} ~Js kA5h|&
} mVYfyLZ,(
*c=vEQn-
/** |4
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* @param data Qc?W;Q+
* @param l yvzH}$!]
* @param i yp^k;G?_d
*/ Iy4%,8C]g
private void insertSort(int[] data, int start, int len) { O $e"3^Pa
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); EmrkaV-?k
} W^xO/xu1/
} [xrsa!$
} IvkYM`%
} ::#[lw
N\Lu+ x5
堆排序: PX/{!_mM
Z'2AsT
package org.rut.util.algorithm.support; $57Q
g1v
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import org.rut.util.algorithm.SortUtil; Hd\oV^>
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/** UjoA$A!Od;
* @author treeroot ZYY2pY 1
* @since 2006-2-2 G rU`;M"
* @version 1.0 U?{oxy_[ 2
*/ z_R^C%0k
public class HeapSort implements SortUtil.Sort{ /ILd|j(e
*P7/ry^<F
/* (non-Javadoc) siCm)B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W!O/t^H>
*/ bQq/~
public void sort(int[] data) { Kx)PK
MaxHeap h=new MaxHeap(); LS9,:!$
h.init(data); f
-F}~S
for(int i=0;i h.remove(); b/R7Mk1
System.arraycopy(h.queue,1,data,0,data.length); {'wvb
"b
} Z:N;>.3i
aZ_3@I{d`
private static class MaxHeap{ aN07\
>2pxl(i
void init(int[] data){ -2[4 @
this.queue=new int[data.length+1]; %]0?vw:;j
for(int i=0;i queue[++size]=data; et)n`NlcK
fixUp(size); TB.>?*<n]
} ]4[%Sv6]G
} 2#^g] o-N
`JiWS
private int size=0; Q
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^JMG'@x
private int[] queue; |,oLZCNa
T!y 9v5
public int get() { xl,%
Z~[
return queue[1]; "h[)5V{
} fvH{va.
R59iuHQ[
public void remove() { m^qFaf)6
SortUtil.swap(queue,1,size--); K`9~#Zx$
fixDown(1); %}zkmEY.e
} 4D<C;>*/b
file://fixdown O<L=N-
private void fixDown(int k) { U*Y]cohh
int j; 8/tB?j
while ((j = k << 1) <= size) { *aM7d>nG5
if (j < size %26amp;%26amp; queue[j] j++; Zv9JkY=+@
if (queue[k]>queue[j]) file://不用交换 9XDSL[[
break; x X3I`
SortUtil.swap(queue,j,k); =6:9y}~
k = j; Ym\<@[3+!
} !\1)?&y9j
} 2[pOGc$
private void fixUp(int k) { 2>k*9kyp
while (k > 1) { 25vjn 1$sW
int j = k >> 1; 985h]KQ
if (queue[j]>queue[k]) v .C
break; "PRHQW
SortUtil.swap(queue,j,k); 8M,o)oH
k = j; Q0jg(=9wP
} obF|;fwPnR
} 71AYDO
M_%KhK
} hLZfArq}
H3R{+7
} 59j`Z^e
{p/Yz#
SortUtil: ><"|>(y
D-C]0Jf3
package org.rut.util.algorithm; B1~`*~@
K*DH_\SPK
import org.rut.util.algorithm.support.BubbleSort; =,N"% }
import org.rut.util.algorithm.support.HeapSort; Ekq(
import org.rut.util.algorithm.support.ImprovedMergeSort; L7(FDv,?
import org.rut.util.algorithm.support.ImprovedQuickSort; e/+.^ '{
import org.rut.util.algorithm.support.InsertSort; GU/P%c/V
import org.rut.util.algorithm.support.MergeSort; [DeDU:
import org.rut.util.algorithm.support.QuickSort; Ty{
SZUJ
import org.rut.util.algorithm.support.SelectionSort; fm^`
import org.rut.util.algorithm.support.ShellSort; VUUnB<j
<v'[Wl@hq
/** q#c+%,Z=C
* @author treeroot Nk\ni>Du3
* @since 2006-2-2 ,ps?@lD
* @version 1.0 OZf@cOTWK
*/ .EHq.cde
public class SortUtil { Tb2#y]27
public final static int INSERT = 1; 3zKeN:w
public final static int BUBBLE = 2; wt9f2
public final static int SELECTION = 3; k -R"e
public final static int SHELL = 4;
C&qo$C
public final static int QUICK = 5; 1U/9=b
public final static int IMPROVED_QUICK = 6; ju[y-am$/
public final static int MERGE = 7; "wZvr}xk
public final static int IMPROVED_MERGE = 8; 4FYV]p8f
public final static int HEAP = 9; [c1Gq)ht
pl@K"PRE
public static void sort(int[] data) { G?,3Zn0
sort(data, IMPROVED_QUICK); %Ul,9qG+
} JK!`uG+v
private static String[] name={ ~ PyS;L}
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" <aaT,J8%[
}; 9fbbJ"I+
P(@Q[XQ2
private static Sort[] impl=new Sort[]{ N&
F.hi$_
new InsertSort(), EMr|#}]#s
new BubbleSort(), 1@'I eywg
new SelectionSort(), {#?|&n<
new ShellSort(), +(:Qf+:
new QuickSort(), =EYgck;)
new ImprovedQuickSort(), [75?cQD
new MergeSort(), Yh!k uS#<
new ImprovedMergeSort(), dB#c$1
new HeapSort() T'lycc4~a
}; L |#0CRiN
zq$L[X
public static String toString(int algorithm){ uc"%uc'
return name[algorithm-1]; Ue;Z)}
} (r?hD*2r
9\Ff z&
public static void sort(int[] data, int algorithm) { V73/q
impl[algorithm-1].sort(data); PeiRe
} *mj=kJ7(
5-fASN.Lx
public static interface Sort { :!CnGKgt
public void sort(int[] data); PY '^:0
} 8,h!&9
29G el
public static void swap(int[] data, int i, int j) { +Z_VF30pa
int temp = data; alzdYiGf
data = data[j]; fsEQ4xN'
data[j] = temp; ~};q/-[r
} WY@g=W>+
} YSPUQ