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。 V0=%$tH
插入排序: #*'Qm
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package org.rut.util.algorithm.support; S^eem_C
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import org.rut.util.algorithm.SortUtil; G}fBd
/** @kWL "yy,
* @author treeroot <X:JMj+
* @since 2006-2-2 x#J9GP.
* @version 1.0 6OAs%QZ
*/ #$I@V4O;#
public class InsertSort implements SortUtil.Sort{ WVdV:vJ-
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/* (non-Javadoc) UqOBr2UmG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;!MQ@Fi^
*/ mb1mlsE
public void sort(int[] data) { D%p*G5Bg3
int temp; C9!t&<\}
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);
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} iT>u&0B-
} Aqmpo3P[+
} "bm|p/A
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} BDB*>y7(
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冒泡排序: C\EIaLN<
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package org.rut.util.algorithm.support; jk9f{Iu
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import org.rut.util.algorithm.SortUtil; bj
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/** EtKq.<SJ
* @author treeroot +/~]fI
* @since 2006-2-2 Xp:A;i9
* @version 1.0 {]k#=a4
*/ +e>SK!kB7
public class BubbleSort implements SortUtil.Sort{ #ibwD:{
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/* (non-Javadoc) ]n!V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Mu\V3`j
*/ T/_u;My;
public void sort(int[] data) { =AIFu\9#a`
int temp; Vu:ZG*^
for(int i=0;i for(int j=data.length-1;j>i;j--){ c/|{yp$Ga>
if(data[j] SortUtil.swap(data,j,j-1); *;fTiL
} IT| h;NUG
} L4>14D\
} q)?%END
} ^kKLi
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} >)kKP8l7
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选择排序: b^/u9
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package org.rut.util.algorithm.support; }r:"X<`
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import org.rut.util.algorithm.SortUtil; +
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/** I-]G{
* @author treeroot ]9oj,k
* @since 2006-2-2 -9b=-K.y
* @version 1.0 1bFZyD"
*/ \p4*Q}t
public class SelectionSort implements SortUtil.Sort { .]v>LsbhF
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/* kR<sSLEb
* (non-Javadoc) f2WVg;Z
* U%h.l
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h/Mt<5
*/ TO6F
public void sort(int[] data) { =XfvPBA
int temp; 8<VDp Y
for (int i = 0; i < data.length; i++) { !db=Iz5)
int lowIndex = i; :3D8rqi:
for (int j = data.length - 1; j > i; j--) { JHxcHh
if (data[j] < data[lowIndex]) { :Awwt0
lowIndex = j; Z",0 $Gxu
} 1=5"j]0hY
} +^AdD8U
SortUtil.swap(data,i,lowIndex); E{,WpU
} /TMVPnvz.
} 'V&g"Pb
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} vMzL+D2)
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Shell排序: C*YQ{Mz(f
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package org.rut.util.algorithm.support; [<@L`ki
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import org.rut.util.algorithm.SortUtil; $_<[kci%
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/** jJ2rfdfj
* @author treeroot 6()Jx%
* @since 2006-2-2 !X}+JeU'
* @version 1.0 MT{1/A;`)
*/
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public class ShellSort implements SortUtil.Sort{ 1I2ndt
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/* (non-Javadoc) hC$e8t60
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Es[3Ppz
*/ `{#""I^_
public void sort(int[] data) { AF:_&gF
for(int i=data.length/2;i>2;i/=2){ L'wR$
for(int j=0;j insertSort(data,j,i); =c6d$
}
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} }9ulHiR
insertSort(data,0,1); rCo}^M4Pb
} b'O/u."O
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/** >l0Qd1
* @param data 8(? &=>@
* @param j Jq^[^
* @param i M(>74(}]
*/ zw3I(_d[
private void insertSort(int[] data, int start, int inc) { -c>3|bo
int temp; ndQw>
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); PcsYy]Q/
} mU[\//
} ^@x&n)nzP
} nKE^km
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} %qV:h#
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快速排序: `C4(C4u
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package org.rut.util.algorithm.support; zW`Hqt;
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import org.rut.util.algorithm.SortUtil; |K.I%B
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/** B}7j20:Z
* @author treeroot Ifp8oL? S;
* @since 2006-2-2 H0b{`!'Fs:
* @version 1.0 EwBrOq`C
*/ F*G]Na@6D
public class QuickSort implements SortUtil.Sort{ c6b51)sQ"
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/* (non-Javadoc) RSAGSGp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b\\lEM>o1
*/ n%WjU)<
public void sort(int[] data) { I?1BGaAA
quickSort(data,0,data.length-1); ]HWeVhG
} o5]-Kuw`
private void quickSort(int[] data,int i,int j){ ea{zL
int pivotIndex=(i+j)/2; %S%UMA.
file://swap {JdXn
SortUtil.swap(data,pivotIndex,j); gR/?MJ(v
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int k=partition(data,i-1,j,data[j]); hcW>R
SortUtil.swap(data,k,j); $mT)<N ;w
if((k-i)>1) quickSort(data,i,k-1); `j{q
if((j-k)>1) quickSort(data,k+1,j); eS Z':p
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} ,]t_9B QK
/** A#`$#CO
* @param data e6*,MnqBh
* @param i Eg&5tAyM
* @param j (0@b4}Z
* @return I>8_gp\1
*/ D<70rBf2
private int partition(int[] data, int l, int r,int pivot) { n"?*"Ya
do{ U
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); T:
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SortUtil.swap(data,l,r); zv"NbN
} IT#Li
while(l SortUtil.swap(data,l,r); ]?V:+>t=
return l; 07=I&Pum
} S5gBVGh
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} O:'qwJ#~
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改进后的快速排序: p/eaO{6 6
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package org.rut.util.algorithm.support; P@bPdw!JA
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import org.rut.util.algorithm.SortUtil; "C3J[) qC
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/** -F(luRBS(W
* @author treeroot
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* @since 2006-2-2 "([gN:
* @version 1.0 "1\GU1x
*/ ]>Dbta.27
public class ImprovedQuickSort implements SortUtil.Sort { Xn~\Vb
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private static int MAX_STACK_SIZE=4096; 'pUJREb
private static int THRESHOLD=10; 8mOGEx
/* (non-Javadoc) o/&K>]8M
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gKQs:25
*/ iW2\;}y
public void sort(int[] data) { fVZ92Xw
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int[] stack=new int[MAX_STACK_SIZE]; #I MaN%
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int top=-1; wQ/.3V[
int pivot; z&c}
int pivotIndex,l,r; Qe!3ae`Z
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stack[++top]=0; *qYw
stack[++top]=data.length-1; )n<p_vz
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while(top>0){ ;,uATd|
int j=stack[top--]; W!"QtEJ,
int i=stack[top--]; !5h8sD;
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pivotIndex=(i+j)/2; _B^X3EOc
pivot=data[pivotIndex]; -awG14%
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SortUtil.swap(data,pivotIndex,j); B[h^] k
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file://partition \N-3JO Vy
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do{ 3mopTzs)
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #Muh|P]%\
SortUtil.swap(data,l,r); 3(t3r::&
} J"S(GL
while(l SortUtil.swap(data,l,r); g'w"U9tjO
SortUtil.swap(data,l,j); "1XTgCu\
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if((l-i)>THRESHOLD){ } 7:T?
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stack[++top]=i; j[mII5e7g
stack[++top]=l-1; Gj%q:[r
} @(*A<2;N
if((j-l)>THRESHOLD){ 3P>1-=
stack[++top]=l+1; Dk$<fMS,7c
stack[++top]=j; @vib54G
} 3*\Q]|SI!
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} av5a2r0W1
file://new InsertSort().sort(data); >z/.8!#Q
insertSort(data); !%t2ZQJq
} IG\Cj7{K^
/** aO(iKlZ$
* @param data t,r:='
*/ z Fj |E
private void insertSort(int[] data) { 8D@J d
int temp; Sp?e!`|8
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /:{4,aX2
} L^Q;M,.c;
} `:EhYj.
} G,B4=[Y
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} X<$DNRN
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归并排序: ~:0w%
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package org.rut.util.algorithm.support; SYf1dbc..u
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import org.rut.util.algorithm.SortUtil; >!lpI5'Z&
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/** gs/o cu
* @author treeroot z$d<ep{6
* @since 2006-2-2 \o72VHG66
* @version 1.0 -&]!ig5v
*/ l\Ww^
public class MergeSort implements SortUtil.Sort{ D:IG;Rsc
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/* (non-Javadoc) f)a0 !U 44
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KZ#\ >
*/ QS\wtTXj
public void sort(int[] data) { P zM yUv
int[] temp=new int[data.length]; FIVC~LDd
mergeSort(data,temp,0,data.length-1); k.c.7%|~;
} RP+)sCh
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private void mergeSort(int[] data,int[] temp,int l,int r){ Wi!"Vcn
int mid=(l+r)/2; TXyiCS3
if(l==r) return ; Y6)o7t
mergeSort(data,temp,l,mid); Uey'c1
mergeSort(data,temp,mid+1,r); ]e7?l/N[
for(int i=l;i<=r;i++){ e3p:lu
temp=data; Ok\X%avq
} Q[q`)~|
int i1=l; T*=*$%
int i2=mid+1; U1lqg?KO
for(int cur=l;cur<=r;cur++){ &dK!+
if(i1==mid+1) "dDrw ]P;
data[cur]=temp[i2++]; 96#]P
else if(i2>r) 7m]J7 +4
data[cur]=temp[i1++]; FY^Nn
else if(temp[i1] data[cur]=temp[i1++]; |S|'o*u
else [Y@>,B!V
data[cur]=temp[i2++]; H|wP8uQC
} ]{\M,txo8
} 1(:!6PY
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} vlEW{B;)Z
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改进后的归并排序: gJrWewEe
Q@NFfJJ
package org.rut.util.algorithm.support; W-&V:S{<
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import org.rut.util.algorithm.SortUtil; p nI=
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/** ]cmX f
* @author treeroot uZJfIC<>
* @since 2006-2-2 iI7ocyUv
* @version 1.0 h4F%lGot
*/ 3/Z>W|w#w
public class ImprovedMergeSort implements SortUtil.Sort { ez*QP|F*9
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private static final int THRESHOLD = 10; PR$;*|@
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/* +Y~5197V
* (non-Javadoc) |K-`
* |vGHh zZ|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Pgy[\t 2K
*/ 6W=V8
public void sort(int[] data) { E0&d*BI2
int[] temp=new int[data.length]; fbbbTZy
mergeSort(data,temp,0,data.length-1); Dat',5
} +0UBP7kn
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private void mergeSort(int[] data, int[] temp, int l, int r) { ,J!$Q0 e
int i, j, k; /"u37f?[^
int mid = (l + r) / 2; Rq[d\BN0.d
if (l == r) Ur>1eN%9'
return; 2xX:Q'\2
if ((mid - l) >= THRESHOLD) cY_ke
mergeSort(data, temp, l, mid); fCJjFL:
else [?KGLUmTAI
insertSort(data, l, mid - l + 1); 5~ :/%+F0=
if ((r - mid) > THRESHOLD) B,w
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mergeSort(data, temp, mid + 1, r); O x-eB
else 0*rD'?)K+
insertSort(data, mid + 1, r - mid); b"N!#&O