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。 WV&BZ:H
插入排序: <R!qOQI
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package org.rut.util.algorithm.support; + S%+Ku
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import org.rut.util.algorithm.SortUtil; Ak9W8Z}
/** 4ErDGYg}
* @author treeroot )FHaJ*&d
* @since 2006-2-2 _6(zG.Fg
* @version 1.0 Jl9T[QAJn1
*/ zJx<]=]
public class InsertSort implements SortUtil.Sort{
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/* (non-Javadoc) s!+?)bB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lI5{]?'
*/ #2WBYScW0
public void sort(int[] data) { 3~ZtAgih%
int temp; :X$&gsT/,
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4XKg3l1
} ;N/c 5+
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冒泡排序: ?]7ITF
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package org.rut.util.algorithm.support; l"cO@.T3
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import org.rut.util.algorithm.SortUtil; VK NCK
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/** D<rjxP
* @author treeroot ]&9f:5',
* @since 2006-2-2 Z
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* @version 1.0 Ik}*7D
*/ O=-|b kO
public class BubbleSort implements SortUtil.Sort{ T}\U:@b
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/* (non-Javadoc) ;bA9(:?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J%[K;WjrZJ
*/ WUHx0I
public void sort(int[] data) { Dv hK0L*Qr
int temp; kQH!`-n:T
for(int i=0;i for(int j=data.length-1;j>i;j--){ .<j8>1
if(data[j] SortUtil.swap(data,j,j-1); I5bi^!i
} -({\eL$n
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} $OUa3!U_!
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选择排序: 4$|G$h
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; 3^fZUldf
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/** ,:v}gS?Uq
* @author treeroot ) Z^(+
* @since 2006-2-2 -9Can4
* @version 1.0 J,q:
*/ $>BP}V33
public class SelectionSort implements SortUtil.Sort { ^L'K?o
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/* Nh+$'6yT%
* (non-Javadoc) s0`uSQ2X
* IBuuZ.=j2h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *3k~%RM%?
*/ 4,aBNuxWd
public void sort(int[] data) { PuOo^pFhH
int temp; #h&?wE>
for (int i = 0; i < data.length; i++) { vAVoFL
int lowIndex = i; UGN. ]#"#
for (int j = data.length - 1; j > i; j--) { jAJkCCG
if (data[j] < data[lowIndex]) { iD]!PaFD`
lowIndex = j; zO+nEsf^O
} Z os~1N]3
} =_UPZ]
SortUtil.swap(data,i,lowIndex); )0%<ZVB
} V3m!dp]
} <e=0J8V8,i
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Shell排序: UtWoSFZ'o!
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package org.rut.util.algorithm.support; GV2}K
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import org.rut.util.algorithm.SortUtil; My[L3KTTp
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/** +}1]8:>cq
* @author treeroot ooD/QZUE
* @since 2006-2-2 L3W
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* @version 1.0
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*/ dE^'URBiA
public class ShellSort implements SortUtil.Sort{ epwXv|aSZ
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/* (non-Javadoc) w?/,LV
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Xr~r`bR=
*/ o2.!
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public void sort(int[] data) { Cr[#D$::`
for(int i=data.length/2;i>2;i/=2){ s9'iHe
for(int j=0;j insertSort(data,j,i); /|\`NARI
}
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} oFsMQ Py
insertSort(data,0,1); /!E /9[V
} y.~5n[W
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/** 6[CX[=P30
* @param data -kJF@w6u
* @param j [mwfgh&4%
* @param i ~pw_*AN
*/ d_yqmx?w
private void insertSort(int[] data, int start, int inc) { bcZHFX
int temp; `Yut1N
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); p"X\]g^jA>
} VJNPs6
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快速排序: \"lzmxe0p
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package org.rut.util.algorithm.support; G%6wk=IH
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import org.rut.util.algorithm.SortUtil; >!oN+8[~
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/** ;j(xrPNb
* @author treeroot f{+8]VA
* @since 2006-2-2 MBg^U<t8
* @version 1.0 ^*0;Z<_
*/ =B/^c>w2
public class QuickSort implements SortUtil.Sort{ ngNg1zV/q
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/* (non-Javadoc) -Rf|p(SJ,E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |{_%YM($
*/ 5]F9o9]T
public void sort(int[] data) { ?hwQY}
quickSort(data,0,data.length-1); #AY+[+
} kTnvD|3_!P
private void quickSort(int[] data,int i,int j){ -&HN h\
int pivotIndex=(i+j)/2; !.F\v.
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SortUtil.swap(data,pivotIndex,j); 4o|~KX8Qz
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int k=partition(data,i-1,j,data[j]); ^L[Z+7|
SortUtil.swap(data,k,j); jQ[Z*^"}
if((k-i)>1) quickSort(data,i,k-1); 7kb`o
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if((j-k)>1) quickSort(data,k+1,j); ZHB'^#b
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} 'N}Wo}1r
/** ~PV>3c3l=
* @param data }%:?s6Ler
* @param i !Q?4sAB
* @param j hR?rZUl2M
* @return :<jf}[w!
*/ J6Kfz~%
private int partition(int[] data, int l, int r,int pivot) { G3e%~
do{ ^ZV xBQKg
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ,= PDL
SortUtil.swap(data,l,r); Mc\lzq8\ 1
}
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while(l SortUtil.swap(data,l,r); N*z<VZ
return l; "=RB
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} -Zw"o>
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} F4PD3E_#
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改进后的快速排序: M0]fh5O
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package org.rut.util.algorithm.support; vi=yR
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import org.rut.util.algorithm.SortUtil; H;Bj\-Pa
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/** mki=.l$O
* @author treeroot Kp99y
* @since 2006-2-2 9R E;50h
* @version 1.0 ?e ~* ,6
*/
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public class ImprovedQuickSort implements SortUtil.Sort { A^m hPBT_
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private static int MAX_STACK_SIZE=4096; J5\> 8I,a
private static int THRESHOLD=10; O}%=c\Pb
/* (non-Javadoc) <Q8bn?Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _}\&;
*/
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public void sort(int[] data) { 8(+X0}
int[] stack=new int[MAX_STACK_SIZE];
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int top=-1; Pgo5&SQb
int pivot; /@OGYYH,M
int pivotIndex,l,r; rXaL1`t*
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stack[++top]=0; Kzmgy14o
stack[++top]=data.length-1; X31k HK5F_
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while(top>0){ Wqqo8Y~fq
int j=stack[top--]; %Wc-.ER
int i=stack[top--]; =GpLlJ`-
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pivotIndex=(i+j)/2; ]A\n>Z!;
pivot=data[pivotIndex]; K;Xn!:) V:
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SortUtil.swap(data,pivotIndex,j); {7;TQ?/
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do{ {wm
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ZzE&?
SortUtil.swap(data,l,r); [C&c;YNp
} I/(`<s p
while(l SortUtil.swap(data,l,r); [R~HhM
SortUtil.swap(data,l,j); ZWFH5#=
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if((l-i)>THRESHOLD){ Z86[sQBg
stack[++top]=i; n1LS*-@
stack[++top]=l-1; u|Ai<2b$
} }%}eyLm(
if((j-l)>THRESHOLD){ gf!j|O ;
stack[++top]=l+1; /2z2a-!r
stack[++top]=j; E^qKkl
} }Jc^p
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} II2oV}7?
file://new InsertSort().sort(data); ;S%wPXj&
insertSort(data); :r6
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} \GkcK$Y
/** 6D+9f{~r
* @param data @3G3l|~>
*/ K>q,?x b
private void insertSort(int[] data) { $@<