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。 \/ipYc
插入排序:
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package org.rut.util.algorithm.support; ^h^.;Iqr=
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import org.rut.util.algorithm.SortUtil; (eSsx/
/** ")<5VtV
* @author treeroot /36gf
* @since 2006-2-2 %j.n^7i]^:
* @version 1.0 I-#7Oq:Np
*/ h"nhDART<
public class InsertSort implements SortUtil.Sort{ R3%%;` c=
*wx95?H0Z
/* (non-Javadoc) ERia5HnoD,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Zz"8
*/ EjMVlZC>
public void sort(int[] data) { m`}mbm^
int temp; 5Dzf[V^]`
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); U~USwUzgY
} 3&mpn,
} Ft38)T"2R\
} :w+vi7l$
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} <@P. 'rE
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冒泡排序: v3]5`&3~
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package org.rut.util.algorithm.support; '$), i>6gJ
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import org.rut.util.algorithm.SortUtil; %uCsCl
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/** ] E:NmBN<
* @author treeroot @dx8 {oQ
* @since 2006-2-2 U$Z<lx2P
* @version 1.0 7Mk>`4D'c
*/ #ID
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public class BubbleSort implements SortUtil.Sort{ ) J.xQ}g
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/* (non-Javadoc) FPH2dN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p]ujip
*/ (;&}\OX6nm
public void sort(int[] data) { KIp^|
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int temp; N`?|~g3
for(int i=0;i for(int j=data.length-1;j>i;j--){ AUu<@4R7
if(data[j] SortUtil.swap(data,j,j-1); D Q30\b"gU
} Q6D>(H#"0
} ,H%[R+)
} ZZ
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} +3J<vM}dy
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} 4.^T~n G
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选择排序: xy
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package org.rut.util.algorithm.support; c@Br_-
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import org.rut.util.algorithm.SortUtil; 4wkv#vi7!-
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/** } C:i0Q
* @author treeroot `hdff0
* @since 2006-2-2 1YQYZ^11
* @version 1.0 5:jme$BI
*/ ZuybjV1/f6
public class SelectionSort implements SortUtil.Sort { [NAfy~X*
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/* [T,Hpt
* (non-Javadoc) (xHu@l!]
* i1XRBC9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l5.k2{'
*/ U[02$gd0l
public void sort(int[] data) { TA0(U$ 4
int temp; 1ANFhl(l
for (int i = 0; i < data.length; i++) {
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int lowIndex = i; :"MHmm=uU8
for (int j = data.length - 1; j > i; j--) { Li]96+C$}
if (data[j] < data[lowIndex]) { ('7$K
lowIndex = j; R?{xs
} kmX9)TMVO
} sOlnc 6
SortUtil.swap(data,i,lowIndex); &l3(+4Sh
} ?_d6;
} w;yzgj:n&f
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} yvj /u
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Shell排序: Jx~H4y=z
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package org.rut.util.algorithm.support; l)*(UZ"
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import org.rut.util.algorithm.SortUtil; V:'F_/&X?
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/** LXh}U>a9
* @author treeroot sYBmL]Hr
* @since 2006-2-2 n@xQ-v
* @version 1.0 nq HpYb6I0
*/ {0w2K82
public class ShellSort implements SortUtil.Sort{ f)j*P<V
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/* (non-Javadoc) r
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8-NycG&)
*/ cz1 + XpU
public void sort(int[] data) { ij;NM:|Sd
for(int i=data.length/2;i>2;i/=2){ \fUX_0k9,
for(int j=0;j insertSort(data,j,i); z4Zm%
} %jy$4qAf%
} S4`X^a}pY
insertSort(data,0,1); `
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} SMD*9&,
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/** iuGwc086
* @param data x<M::")5!V
* @param j wpuK?fP
* @param i 6ICW>#fI`
*/ !#_2 ![
private void insertSort(int[] data, int start, int inc) { 'mbLK#q
int temp; hdCd:6
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); O*GF/ R8B
} !IdVg $7
} _wK.n.,S~
} On}1&!{1]
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} xws{"m,NX~
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快速排序: 6" * <0
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package org.rut.util.algorithm.support; T2S_>
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import org.rut.util.algorithm.SortUtil; sWte&
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/** O&BvWik
* @author treeroot fMg9h9U
* @since 2006-2-2 dh7`eAMY
* @version 1.0 +4_, , I
*/ =Q40]>bpx
public class QuickSort implements SortUtil.Sort{ \/YRhQ
q+\<%$:u
/* (non-Javadoc) 2I [zV7 @t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `
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*/ wQUl!s7M;
public void sort(int[] data) { &&9|;0<
quickSort(data,0,data.length-1); NOQ^HEi
} ,M.}Q ak^
private void quickSort(int[] data,int i,int j){ o& FOp'
int pivotIndex=(i+j)/2; rL1yq|]I
file://swap &>,]YrU
SortUtil.swap(data,pivotIndex,j); d<7b<f"~
?-<lIFFh
int k=partition(data,i-1,j,data[j]); m%`YAD@2z
SortUtil.swap(data,k,j); jeWv~JA%L|
if((k-i)>1) quickSort(data,i,k-1); &|{1Ws
if((j-k)>1) quickSort(data,k+1,j); cl4z%qv*
ih".y3
} ^#<L!yo^
/** {\D&*
* @param data KJ'ID
* @param i qx5`lm~L
* @param j i`2SebDj'w
* @return c%/b*nQ(=
*/ >|A,rE^Ojt
private int partition(int[] data, int l, int r,int pivot) { S[3"?$3S
do{ ,~naKd.ZY
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); g=$U&Hgs
SortUtil.swap(data,l,r); dgpE3
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} !2KQi=Ng
while(l SortUtil.swap(data,l,r); ~dr,;NhOLJ
return l; hJ{u!:4
} N9_* {HOy
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} L T$U
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改进后的快速排序: ~Mn3ADIb=
H9(?yI@Zr#
package org.rut.util.algorithm.support; EcB
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import org.rut.util.algorithm.SortUtil; 5q0L<GOrj
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/** s;9Du|0f^
* @author treeroot =4eJ@EVM
* @since 2006-2-2 6P{^j
* @version 1.0 ?Tc#[B
*/ E)$>t}$
public class ImprovedQuickSort implements SortUtil.Sort { *I(6hB
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private static int MAX_STACK_SIZE=4096; I@KM2KMN
private static int THRESHOLD=10; g4h{dFb|_
/* (non-Javadoc) oN,1ig
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gQ{ #C'
*/ rpRyB9
public void sort(int[] data) { v;<gCzqQh
int[] stack=new int[MAX_STACK_SIZE]; 5U~KYy^v
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int top=-1; %,
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int pivot; +-@n}xb@
int pivotIndex,l,r;
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stack[++top]=0; ]!/U9"_e"B
stack[++top]=data.length-1; 1p.c6[9-
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while(top>0){ 8D )nM|
int j=stack[top--]; C>+n>bH]L
int i=stack[top--]; ,~d0R4)
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pivotIndex=(i+j)/2; \s*M5oN]]
pivot=data[pivotIndex]; d. vNiq,`
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SortUtil.swap(data,pivotIndex,j); %v8&
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file://partition }pMVl
l=i-1; &|k=mxox\
r=j; .kBkYK8*t
do{ <t"T'\3
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); V6][*.i!9
SortUtil.swap(data,l,r); [;z\bV<S
} *<xu3){:c
while(l SortUtil.swap(data,l,r); uslu-|b!%
SortUtil.swap(data,l,j); "@nH;Xlq
4?+K
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if((l-i)>THRESHOLD){ -"I$$C
stack[++top]=i; jhm3:;Z
stack[++top]=l-1; ,' |J
} s-"KABEE
if((j-l)>THRESHOLD){ _Z0 .c@0
stack[++top]=l+1; N5 5F5
stack[++top]=j; :VT%d{Vp_
} 9!_,A d;3
g{]6*`/Z
} #%;Uh
file://new InsertSort().sort(data); .]vb\NBK7
insertSort(data); 3}H{4]*%_
} ;_bRq:!j;
/** Uqel
UL}
* @param data wb.yGfJ
*/ _aFe9+y
private void insertSort(int[] data) { {cs>Sy
4
int temp; 0V~zZ/e
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); zo ?RFn
} Y#9W]78He
} n|{K_! f
} +LRKS
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} 0/su`
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归并排序: ' 4FH9J
z}MxMx
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package org.rut.util.algorithm.support; M1/d7d
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import org.rut.util.algorithm.SortUtil; inGUN??
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/** *K|~]r(F?
* @author treeroot u}nS dZC
* @since 2006-2-2 %/Wk+r9uu
* @version 1.0 s:tX3X
*/ qk<jvha
public class MergeSort implements SortUtil.Sort{ \\dUp>1=
`7=$I~`
/* (non-Javadoc) R0RxcBtG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]<^2B?}
*/ Ah2 {kK
public void sort(int[] data) { _2jL]mB
int[] temp=new int[data.length]; PB@IPnB-
mergeSort(data,temp,0,data.length-1); VgNB^w
} L/ 7AGR|;C
@ual+=L
private void mergeSort(int[] data,int[] temp,int l,int r){ yu'-'{%
int mid=(l+r)/2; 4Im>2)
if(l==r) return ; R&Lqaek&W
mergeSort(data,temp,l,mid);
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mergeSort(data,temp,mid+1,r); E]mm^i`|
for(int i=l;i<=r;i++){ 9-pt}U
temp=data; %aNm j)L
} <Z%=lwtX
int i1=l; ,\6Vb*G|E>
int i2=mid+1; 712nD ?>
for(int cur=l;cur<=r;cur++){ G`FYEmD
if(i1==mid+1) I}_}VSG(
data[cur]=temp[i2++]; BY~Tc5
else if(i2>r) vIRT$W' O}
data[cur]=temp[i1++];
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else if(temp[i1] data[cur]=temp[i1++]; tB4mhX|\
else $P{`-Y }a
data[cur]=temp[i2++]; ~$u9
} }:2##<"\t
} ^m#tWb)f
T[SK>z
} )$!b`u
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改进后的归并排序: kO\ O$J^S
LI%dJ*-V
package org.rut.util.algorithm.support; t5+p]7
Y1h)aQ5{
import org.rut.util.algorithm.SortUtil; a?-&O$UHf\
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t,q0
/** zFjz%:0
* @author treeroot .P1WY
* @since 2006-2-2 Yj@Sy
* @version 1.0 Xfk
DMh
*/ xh2r?K@k>
public class ImprovedMergeSort implements SortUtil.Sort { y >=Y
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private static final int THRESHOLD = 10; o-rX 4=T
bG]0|
/* 1d< b\P0
* (non-Javadoc) %6 *c40
* Z<;W*6J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N
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*/ ~2Wus8X-
public void sort(int[] data) { #Nh'1@@
int[] temp=new int[data.length]; EnWv9I<
mergeSort(data,temp,0,data.length-1); )95k3xo
} q\@Zf}
G%I
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private void mergeSort(int[] data, int[] temp, int l, int r) { 2fTuIS<yr
int i, j, k; 86=W}eV1r
int mid = (l + r) / 2; blQ&QQL
if (l == r) i%FC
lMF
return; MDF_Xr-hZ
if ((mid - l) >= THRESHOLD) O(/~cQ
mergeSort(data, temp, l, mid); }&vD(hX
else bny5e:= d
insertSort(data, l, mid - l + 1); *\XOQWrF
if ((r - mid) > THRESHOLD) I;w!
mergeSort(data, temp, mid + 1, r); E<jajYj
else Lng. X8D
insertSort(data, mid + 1, r - mid); GNJ/|9
^.6yzlY
for (i = l; i <= mid; i++) {
!Vyf2xS"
temp = data; )h,yQ`.
} )NZH{G
for (j = 1; j <= r - mid; j++) { v Z9OJrF
temp[r - j + 1] = data[j + mid]; WK6,K92
} IB;yL/T
int a = temp[l]; ?z.?(xZ 6
int b = temp[r]; !`e`4y*N
for (i = l, j = r, k = l; k <= r; k++) { 5!?5S$>
if (a < b) { e6taQz@}
data[k] = temp[i++]; "B{3q`(
a = temp; Q'n+K5&p
} else { 23tX"e
data[k] = temp[j--]; `^[k8Z(
b = temp[j]; oMEW5.VX
} 0''p29
}
P\MDD@
} Q` u#
?+Gt?-! 5q
/** &b|RoPV
* @param data
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* @param l YD[HBF)~j
* @param i 5[4wN(
)
*/ qHub+"2
private void insertSort(int[] data, int start, int len) { tBGLEeL/.
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); `TPIc
} U\P4ts
} $rXCNew(
} bW=q G
} i9L]h69r
4z(~)#'^
堆排序: b1?^9c#0d
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package org.rut.util.algorithm.support; T#qf&Q Z
xfeE D^?
import org.rut.util.algorithm.SortUtil; W\~ie}D{
M)#9Q=<
/** qob!AU|
* @author treeroot ZR\N~.
* @since 2006-2-2 C7dq=(p&
* @version 1.0 Q#3}AO
*/ @4y?XL(n
public class HeapSort implements SortUtil.Sort{ 4MPy}yT*
^y@
W\
/* (non-Javadoc) $U?]^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) svmb~n &x6
*/ Ef`'r))
public void sort(int[] data) { zwV!6xG
MaxHeap h=new MaxHeap(); \ UrD%;sq
h.init(data); 08xo_Oysq
for(int i=0;i h.remove(); ?XY'<