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。 N'&>bO?@`
插入排序: L?j<KW
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package org.rut.util.algorithm.support; r*$f^T!|
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import org.rut.util.algorithm.SortUtil; S,Q^M
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/** Shy.:XI
* @author treeroot /j$pV
* @since 2006-2-2 @sZ7Ka
* @version 1.0 X@tA+
*/ F
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public class InsertSort implements SortUtil.Sort{ ocK4Nxs
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/* (non-Javadoc) #rGCv~0*l
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @%L
*/ lemV&$WN|
public void sort(int[] data) { bCC &5b
int temp; *WJK&
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9e>2kd
} 3gVU#T[[
} +2 oZML
} uE (5q!/
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} _xi&%F/
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冒泡排序: /|UbYe,
oPa oQbR(A
package org.rut.util.algorithm.support; vf<Dqy <M.
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import org.rut.util.algorithm.SortUtil; hrzxc4,W
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/** ^q/^.Gf
* @author treeroot ,P`G IGvkA
* @since 2006-2-2 ^b|? ?9&
* @version 1.0 +MaEet
*/ GeB&S!F
public class BubbleSort implements SortUtil.Sort{ ?f'`b<o
Et-|[ eL
/* (non-Javadoc) jCNR63/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Nb_Glf
*/ tB`"gC~
public void sort(int[] data) { f-[.^/
int temp; <b_K*]Z
for(int i=0;i for(int j=data.length-1;j>i;j--){ sg}<()
if(data[j] SortUtil.swap(data,j,j-1); ,%xat`d3,3
} 4f8XO"k7t=
} @g;DA)!(
} %++:
K
} s91[DT4
PZZPx<?N
} L?0IUGY
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选择排序: Ph.RWy")
S[/udA
package org.rut.util.algorithm.support; %'e$N9zd
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import org.rut.util.algorithm.SortUtil; x$ TLj
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/** g +gcH
* @author treeroot
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* @since 2006-2-2 '@#(jY0_
* @version 1.0 ~-lUS0duh
*/ %_p]6doF
public class SelectionSort implements SortUtil.Sort { 4[;}/-
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/* P~:^bU^F7
* (non-Javadoc) T8&sPt,f
* 7^! zT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Xg_l4!T_l
*/ iY2q^z/S
public void sort(int[] data) { w?nSQBz$
int temp; w;AbJCv2
for (int i = 0; i < data.length; i++) { G@jx&#v
int lowIndex = i; |HY{Q1%
for (int j = data.length - 1; j > i; j--) { 30Qp:_D
if (data[j] < data[lowIndex]) { $qg2@X.
lowIndex = j; )*uo tV
} ;WYzU`<g
} f!5w+6(
SortUtil.swap(data,i,lowIndex); BU>R<A5h
} 4o@:+T:1
} P()W\+",n
I D-I<Ev
} hDUU_.q)D
&1yErGXC
Shell排序: E
U RKzJk
ls9Y?
package org.rut.util.algorithm.support; "ixea- 2
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import org.rut.util.algorithm.SortUtil; AFYdBK]
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/**
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* @author treeroot UMD\n<+cG,
* @since 2006-2-2 ZXiJ5BZ
* @version 1.0 ){,Mv:#+T
*/ w}$;2g0=a<
public class ShellSort implements SortUtil.Sort{ FrLv%tK|
UEYJd&n0CB
/* (non-Javadoc) C; U4`0=8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) awz.~c++
*/ 7)RvBcM
public void sort(int[] data) { OuWRLcJ!
for(int i=data.length/2;i>2;i/=2){ ScVbo3{m*T
for(int j=0;j insertSort(data,j,i); j!k$SDA-
} Nqd9)WQ
} [GI2%uA0
insertSort(data,0,1); sVmqx^-
} *u,&?fCl
I7Abf7>*Q
/** 5t_Dt<lIz
* @param data zO$r
* @param j 'T7 3V
* @param i >MRuoJ
*/ r_tt~|s,>
private void insertSort(int[] data, int start, int inc) {
4sH?85=j
int temp; +eLL)uk
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); }jWg&<5+z
} M5_t#[ [
} i=P}i8,^=
} THK^u+~LM
*a{WJbau]
} /!p}H'jl
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快速排序: l)jP!k
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package org.rut.util.algorithm.support; #a
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import org.rut.util.algorithm.SortUtil; ? `kZ 6$
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/** t pxk8Ys
* @author treeroot @ uQ *$
* @since 2006-2-2 {'{9B
* @version 1.0 wHx_lsY;
*/ 9p^gF2?k
public class QuickSort implements SortUtil.Sort{ ZIh)D[n
cdSgb3B0
/* (non-Javadoc) Ja/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `@:TS)6X0
*/ aZtM
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public void sort(int[] data) { V
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quickSort(data,0,data.length-1); oY; C[X
} "K+EZ%~<
private void quickSort(int[] data,int i,int j){ \&Bdi6xAy
int pivotIndex=(i+j)/2; 7<B-2g
file://swap d:_;
SortUtil.swap(data,pivotIndex,j); d1
kE)R
~>~qA0m"m
int k=partition(data,i-1,j,data[j]); f3>DmH#
SortUtil.swap(data,k,j); :B7U),T
if((k-i)>1) quickSort(data,i,k-1); Z^_zcH'
if((j-k)>1) quickSort(data,k+1,j); vO/ 3bu}
%yl17:h#
} ]P>XXE;[
/** Y)(yw \&v
* @param data `}bvbvmA
* @param i ]-SJ";aU
* @param j "o_'q@.}
* @return 6'<[QoW];
*/ G!%8DX5
private int partition(int[] data, int l, int r,int pivot) { Ra
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do{ :l iDoGDi
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); PqF&[M<)
SortUtil.swap(data,l,r); /J&DYxl":
} [9MbNJt 8~
while(l SortUtil.swap(data,l,r); w
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return l; ^7=7V0>,:
} E2>+V{TF
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} "{t]~urLd
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改进后的快速排序: /s=veiH
p7r/`_'|
package org.rut.util.algorithm.support; tp&|*M3
A%^7D.j
import org.rut.util.algorithm.SortUtil; @tD (<*f+
m_`%#$s}
/** >&7^yXS
* @author treeroot ?`O^;f
* @since 2006-2-2 S QGYH
* @version 1.0 {I?)ODx7qC
*/ HXZ,"S
public class ImprovedQuickSort implements SortUtil.Sort { \[*q~95$v
/Bh*MH
private static int MAX_STACK_SIZE=4096; ?k;htJcGv
private static int THRESHOLD=10; H3ovF
/* (non-Javadoc) $p$p C/:%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iJmzVR+
*/ x.] tGS
public void sort(int[] data) { 8gt&*;'}*D
int[] stack=new int[MAX_STACK_SIZE]; x7G*xHJ
#V#!@@c;?
int top=-1; wQ@:0GJH
int pivot; Z{yH:{Vk
int pivotIndex,l,r; 0\@oqw]6hv
?N!kYTR%}
stack[++top]=0; ~#}T|
stack[++top]=data.length-1; 8VO];+N
K(d+t\ca
while(top>0){ QgQ$>
int j=stack[top--]; Np r u
int i=stack[top--]; KNj~7aTp
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pivotIndex=(i+j)/2; /4+(e I7
pivot=data[pivotIndex]; LNHi}P~
{ w sT
SortUtil.swap(data,pivotIndex,j); v'S5F@ln
b`^Q ':^A
file://partition :g^
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l=i-1; WY!4^<|w"
r=j; f#w
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do{ 1KBGML-K3
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); WjM7s]ZRv
SortUtil.swap(data,l,r); (+/d*4
} W-/V5=?
while(l SortUtil.swap(data,l,r); {>~9?Xwh
SortUtil.swap(data,l,j); )58~2vR
CA5`uh
if((l-i)>THRESHOLD){ N3@[95
stack[++top]=i; g-"G Zi
stack[++top]=l-1; MtN!Xx
} $60`Hh 4/
if((j-l)>THRESHOLD){ >V)"TZH
stack[++top]=l+1; cF8 X
stack[++top]=j; DX+zK'34
} C_8_sbZ/
Q>rr?L`
} j0a=v}j3
file://new InsertSort().sort(data); a
}*i [
insertSort(data); rPGj+wL5-
} /@\R
/** BzO,(bd!PI
* @param data RwOOe7mv
*/ SPt/$uYJ
private void insertSort(int[] data) { |g!d[ct]
int temp; N2duhI6
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); V %D1Q}X
} nb<o o:^
} jC{KI!kPt
} TO"Md["GI
kV4Oq.E
} 3JBXGT0gJ
6ST(=X_C
归并排序: nhjT2Sl
C])s'XTs
package org.rut.util.algorithm.support; IOdxMzF`m
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import org.rut.util.algorithm.SortUtil; ugE!EEy[^
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/** [0]A-#J
* @author treeroot ZILJXX4
* @since 2006-2-2 "* F`,I3
* @version 1.0 ~QxW^DGa7]
*/ B%MdJD>
public class MergeSort implements SortUtil.Sort{ pq&[cA_w
K%x]:|,>M
/* (non-Javadoc) g,]m8%GHE
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J@6j^U
*/ tH.L_< N
public void sort(int[] data) { QeuM',6R
int[] temp=new int[data.length]; =|ODa/2p
mergeSort(data,temp,0,data.length-1); [3nWxFz$R
} C c:<F_UI
m;MJ{"@A'
private void mergeSort(int[] data,int[] temp,int l,int r){ Z${eDl6i
int mid=(l+r)/2; [YHtBM:y
if(l==r) return ; (=Kv1
H aD
mergeSort(data,temp,l,mid); o.0tD
mergeSort(data,temp,mid+1,r); \U>&W
for(int i=l;i<=r;i++){ VwPoQ9pIS
temp=data; "NGfT:HV
} ]7Sf)
int i1=l; 8(L2w|+B<
int i2=mid+1; NjOUe?BQ
for(int cur=l;cur<=r;cur++){ R]&Csr#~
if(i1==mid+1) e(|Z<6
data[cur]=temp[i2++]; -bHlFNRm
else if(i2>r) oeZuvPCl
data[cur]=temp[i1++]; %N fpEo
else if(temp[i1] data[cur]=temp[i1++]; /:(A9b-B
else t(uvc{K*
data[cur]=temp[i2++]; }^&f {
} PgT8
1u
} ?u@jedQ
=f{v:n6
} '6&o:t
Bps%>P~.
改进后的归并排序: a{hc{
Hxgc9Fis
package org.rut.util.algorithm.support; Q+9:]Bt
_avf%OS
import org.rut.util.algorithm.SortUtil; |.0~'
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/** K3[+L`pz
* @author treeroot o9"?z
* @since 2006-2-2 U{M3QOF
* @version 1.0 @=dv[P"jn
*/ aXJ/"k #Tl
public class ImprovedMergeSort implements SortUtil.Sort { 6Jb0MX"AVr
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private static final int THRESHOLD = 10; 3,{eH6,O7M
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/* rMbq_5}
* (non-Javadoc) DlE, aYB
* $">j~! '
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kF~(B]W(
*/ k/wD@H N
public void sort(int[] data) { qfE0J;e
int[] temp=new int[data.length]; 6Uk+a=Ar
mergeSort(data,temp,0,data.length-1); 7`;sX?R
} J#F5by%8
/u4RZ|&as
private void mergeSort(int[] data, int[] temp, int l, int r) { J~]@#=,v
int i, j, k; 3rH}/`d4
int mid = (l + r) / 2; @GQfBV|3
if (l == r) j2_j5Hgo
return; xS/W}-dPv
if ((mid - l) >= THRESHOLD) s!/lQo5/
mergeSort(data, temp, l, mid); `M6"=)twu
else bkDVW
insertSort(data, l, mid - l + 1); :QGo
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if ((r - mid) > THRESHOLD) tSJ#
mergeSort(data, temp, mid + 1, r); W?.469yy
else h'
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insertSort(data, mid + 1, r - mid); ?0qD(cfx<
pS ](Emn`.
for (i = l; i <= mid; i++) { :) lG}c
temp = data; |di(hY|
} S=!WFKcJR
for (j = 1; j <= r - mid; j++) {
w_Slg&S
temp[r - j + 1] = data[j + mid]; y&,|+h
} 'lA}E
int a = temp[l]; K_)~&Cu*'
int b = temp[r]; qsep9z.
for (i = l, j = r, k = l; k <= r; k++) { VRQ`-#
if (a < b) { c.IUqin
data[k] = temp[i++]; M8X6!"B$Y
a = temp; {f#QZS!E
} else { I$t8Ko._"
data[k] = temp[j--]; AF{uFna
b = temp[j]; <.n,:ir
} 5cIZ_#
} EyA
ny\"
} <}{<FXk[
)-)rL@s.
/** MOaI~xZ
* @param data ))|d~m
* @param l T:@6(_Z
* @param i yogavCD9b/
*/ \(i'i C
private void insertSort(int[] data, int start, int len) { l[$GOLeS
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); lfHN_fE>Mq
} 7s?#y=M
} 7! >0
} FAdTm#tgW]
} . fja;aG
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-
堆排序: agx8 *x
`CS\"|z
package org.rut.util.algorithm.support; FE!jN-#
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xiaE
import org.rut.util.algorithm.SortUtil; {q)d
H_RfIX)X
/** iN
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* @author treeroot %(W&(eN
* @since 2006-2-2 8)1q,[:M
* @version 1.0 {k3ItGQ_
*/ =m2_:&@0x
public class HeapSort implements SortUtil.Sort{ W:RjWn @<
2~$S @c
/* (non-Javadoc) ),p0V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j J{F0o
*/ LRu,_2"
public void sort(int[] data) { r89AX{:
MaxHeap h=new MaxHeap(); /&Oo)OB;
h.init(data); l|WFS
for(int i=0;i h.remove(); F}u'A,Hc
System.arraycopy(h.queue,1,data,0,data.length); >SDQ@63E?
} (Ut8pa+yX
p*Q-o
private static class MaxHeap{ !y b06Z\f
B8Fb$
void init(int[] data){ RD:G9[
this.queue=new int[data.length+1]; $^iio@SW{
for(int i=0;i queue[++size]=data; Fa>f'VXx
fixUp(size); #4bT8kq
} u4~+Bc_GL
} \.mVLLtG
OK80-/8HI
private int size=0; "++\6H<
1@L18%h
private int[] queue; n/5T{ NfG
O.B9w+G=
public int get() { 2/4zg
return queue[1]; t<` As6}
} Nj4CkMM[3
JW[6
^Rw
public void remove() { D-BT`@~l
SortUtil.swap(queue,1,size--); RdPk1?}K
fixDown(1); i4|R0>b
} nm1dd{U6^
file://fixdown [L+*pW+$\.
private void fixDown(int k) { k4V3.i!E
int j; ?-)!dl%N
while ((j = k << 1) <= size) { O"'xAPQW
if (j < size %26amp;%26amp; queue[j] j++; v'S]g^
if (queue[k]>queue[j]) file://不用交换 &K0b3AWc
break; `CVkjLiy
SortUtil.swap(queue,j,k); 53:~a
k = j; <8b1OdA
} (U&
} -SM_JR3<
private void fixUp(int k) { $$m0mK
while (k > 1) { P5?VrZy
int j = k >> 1; _ARG
"
if (queue[j]>queue[k]) BFW b0;+
break;
%!nI]|
SortUtil.swap(queue,j,k); !vf:mMo
k = j; 8+[Vo_]
} %N-aLw\
} x\G%
v%qOW)].
} 1@p,
$b|LZE\bU.
} + kMj|()>\
:u,.(INB
SortUtil: C})Dvh
Vq+7 /+2"
package org.rut.util.algorithm; R)66qRf
^Ye(b7Gd
import org.rut.util.algorithm.support.BubbleSort; Br9j)1;
import org.rut.util.algorithm.support.HeapSort; <Ja&z M
import org.rut.util.algorithm.support.ImprovedMergeSort; 1+Gq<]@G
import org.rut.util.algorithm.support.ImprovedQuickSort; ?\8aT"o
import org.rut.util.algorithm.support.InsertSort; Eto"B"
import org.rut.util.algorithm.support.MergeSort; j_2g*lQ7a
import org.rut.util.algorithm.support.QuickSort; T MMKRC1<
import org.rut.util.algorithm.support.SelectionSort; !=:>y WQ
import org.rut.util.algorithm.support.ShellSort; jM$bWtq2
qt@/
/** 3l?|+sU>O
* @author treeroot AT1cN1:4?
* @since 2006-2-2 R/v|ZvI
* @version 1.0 u&Ic
*/ D@La-K*5
public class SortUtil { N]
sbI)Z@
public final static int INSERT = 1; &AJ bx
public final static int BUBBLE = 2; Y|LL]@Lv
public final static int SELECTION = 3; k";dK*hD,
public final static int SHELL = 4; C!^A\T7p
public final static int QUICK = 5; H*N <7#
public final static int IMPROVED_QUICK = 6; P6GTgQ<'BA
public final static int MERGE = 7; ooJxE\L
public final static int IMPROVED_MERGE = 8; M^ '1Q.K
public final static int HEAP = 9; >;4q
.5Y{Yme
public static void sort(int[] data) { z]N#.utQ
sort(data, IMPROVED_QUICK); ?IAu,s*u
} |V\{U j
private static String[] name={ Jai]z
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" e=(Y,e3
}; `$f`55e
"]=OR>
private static Sort[] impl=new Sort[]{ uNn1qV
new InsertSort(), :o^ioX.J
new BubbleSort(), X&zGgP/
new SelectionSort(), +zMhA p
new ShellSort(), )r46I$]>
new QuickSort(), GPHb-
new ImprovedQuickSort(), +
-Rf@
new MergeSort(), 6HCg<_j]
new ImprovedMergeSort(), q#3T
L<
new HeapSort() %J1'>nI!q
}; # QwX|x{
6c]4(%8
public static String toString(int algorithm){ ^)9/Wz _x
return name[algorithm-1]; h/tCve3Z
} G06;x
F\N0<o
public static void sort(int[] data, int algorithm) { 7#C$}1XJ1
impl[algorithm-1].sort(data); \L(jNN0_R
} }SWfP5D@
9!jF$
public static interface Sort { I+
|uyc
public void sort(int[] data); d\#yWY
} AVjRhe
9R$$(zB 1;
public static void swap(int[] data, int i, int j) { n@+?tYk*e
int temp = data; .eIs$
data = data[j]; g5|&6+t.
data[j] = temp; HVA:|Z19
} 7=N%$]DKZ
} '|]}f }Go