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。 ,vR>hyM
插入排序: 5+GTK)D
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package org.rut.util.algorithm.support; ,$]m1|t@z
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import org.rut.util.algorithm.SortUtil; S> Fb'rJ3
/** IlEU6Rs
* @author treeroot e,XT(KY
* @since 2006-2-2 Q*1Avy6]
* @version 1.0 NiG&Lw*8
*/ pTAm}
public class InsertSort implements SortUtil.Sort{ ?r;F'%N=
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/* (non-Javadoc) c'$y_]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8?~>FLWTXZ
*/ SP0ueAa}
public void sort(int[] data) { V xN!Ki=
int temp; i@{b+5$
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #~Kno@
} j\#)'>"
} C4E* q3[Y
} O-AC$C[d
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} ]_ LAy
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冒泡排序: j+.E#:tu"
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package org.rut.util.algorithm.support; JA >&$h
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import org.rut.util.algorithm.SortUtil; B4OFhtYE
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/** __z/X"H
* @author treeroot .:-*89c
* @since 2006-2-2 UeUOGf ,
* @version 1.0 jcePSps]
*/ f`}u9!jVR
public class BubbleSort implements SortUtil.Sort{ 0Dd8c\J
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/* (non-Javadoc) {s@&3i?ZiC
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /0L]Pf;
*/ .ErR-p=-
public void sort(int[] data) { ^b&hy&ag
int temp; E]Cm#B
for(int i=0;i for(int j=data.length-1;j>i;j--){ }Ej^"T:H_;
if(data[j] SortUtil.swap(data,j,j-1); jJ>I*'w
} H2_6m5[&,
} j"0TAYmXwu
} TIV|7nKL
} <95*z @
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} "t{D5{q|[k
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选择排序: 2 $Z4 >!
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package org.rut.util.algorithm.support; (Q"s;g
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import org.rut.util.algorithm.SortUtil; ?AQR\) P
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/** eET1f8B=L
* @author treeroot 5IG#-Q(6sp
* @since 2006-2-2 .v) A|{:2
* @version 1.0 `yXHb
*/ %H"AHkge:a
public class SelectionSort implements SortUtil.Sort { _hB7;N3
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/* X)Rh&ui
* (non-Javadoc) O sIvW'$\
* &53LJlL
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S?H
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*/ }e1]Ib!
public void sort(int[] data) { Oi!uJofW
int temp; ^O5PcV 3Eg
for (int i = 0; i < data.length; i++) { EU7mP
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int lowIndex = i; r-}C !aF]
for (int j = data.length - 1; j > i; j--) { }8'bXG+
if (data[j] < data[lowIndex]) { :EC[YAK+D
lowIndex = j; \T!tUd
} $8_b[~%2
} m!<uY?,hf
SortUtil.swap(data,i,lowIndex); w##$SaTI
} 9H%L;C5<
} )J|~'{z:
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} 6$+F5T
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Shell排序: /;1h-Rc>
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package org.rut.util.algorithm.support; {Pi]i?
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import org.rut.util.algorithm.SortUtil; (d5kD#.N
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/** Y&b JKX
* @author treeroot a/
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* @since 2006-2-2 i\P)P!
* @version 1.0 rcMSso2
*/ SnW>`
public class ShellSort implements SortUtil.Sort{ _$qH\>se
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/* (non-Javadoc) &FzZpH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #.W<[KZf
*/ ytGcigw(P
public void sort(int[] data) { ,dk!hm u
for(int i=data.length/2;i>2;i/=2){ tsTCZ);(
for(int j=0;j insertSort(data,j,i); [lAZ)6E~=
} 4}HY= 0Um
} >uDE<MUC
insertSort(data,0,1); .37Jrh0Iv
} zC\L-i>G
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/** F| O
* @param data }7|UA%xz
* @param j
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* @param i h.h\)>DM@
*/ ^b`aO$
private void insertSort(int[] data, int start, int inc) { odpjEeQC
int temp; vZt48g
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); >*goDtTjp
} 0W>,RR)
} ?,x3*'-(
} w57D qG>
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} 8d"Ff
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快速排序: L,wEUI
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package org.rut.util.algorithm.support; niJtgK:H^
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import org.rut.util.algorithm.SortUtil; 3N 5b3F
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/** C.;H?So(
* @author treeroot G$$y\e$
* @since 2006-2-2 4brKAqg.
* @version 1.0 J9*$@&@S
*/ leJ\
public class QuickSort implements SortUtil.Sort{ =6:>C9
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/* (non-Javadoc) <C,lHt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wLz@u$u?
*/ &C=[D_h
public void sort(int[] data) { f^?k?_~PN
quickSort(data,0,data.length-1); [kyIF\0
} RwptFO
private void quickSort(int[] data,int i,int j){ f&
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int pivotIndex=(i+j)/2; 8!(09gW'>
file://swap E;AOCbV*$
SortUtil.swap(data,pivotIndex,j); JQ)w/@Vu=
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int k=partition(data,i-1,j,data[j]); 0'0GAh2
SortUtil.swap(data,k,j); I7q}<"`
if((k-i)>1) quickSort(data,i,k-1); f/NfvLi(AU
if((j-k)>1) quickSort(data,k+1,j); i@p0Jnh|
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}
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/** wXnluE
* @param data <*55d2
* @param i -3On^Wj]
* @param j ii:E>O(0B
* @return Q9h;`G
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*/ #?EmC]N7
private int partition(int[] data, int l, int r,int pivot) { (W4H?u@X0
do{ m]#oZVngy
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Q,m1mIf
SortUtil.swap(data,l,r); 9(
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} 6<h
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while(l SortUtil.swap(data,l,r); zo~5(O@
return l; Y(3X5v?[
} )tW0iFY
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} Q&A^(z}
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改进后的快速排序: (!B1}5"
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package org.rut.util.algorithm.support; u#"L gG.X
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import org.rut.util.algorithm.SortUtil; xaG( 3
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/** p,K]`pt=
* @author treeroot Q=~*oYR
* @since 2006-2-2 QpZCU]
* @version 1.0 dF<GuS;l5
*/ $)6%LG_@
public class ImprovedQuickSort implements SortUtil.Sort {
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private static int MAX_STACK_SIZE=4096; U+FI^Xrt#
private static int THRESHOLD=10; kMP3PS
/* (non-Javadoc) Mo~zq.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -)LiL
*/ _^ny(zy(
public void sort(int[] data) { nqMXE82
int[] stack=new int[MAX_STACK_SIZE]; Yg kd 1uI.
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int top=-1; oDBv5
int pivot; +zf[Im%E
int pivotIndex,l,r; 7U,[Ruu
\]=''C=J
stack[++top]=0; M\rZr3
stack[++top]=data.length-1; kt;uB
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while(top>0){ F2:nL`]b[
int j=stack[top--]; g<(\# F}/
int i=stack[top--]; K*[`s'Ip-
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pivotIndex=(i+j)/2; P ")1_!
pivot=data[pivotIndex]; }@H(z
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SortUtil.swap(data,pivotIndex,j); jC}2>_#m(
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file://partition me@xl}
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r=j; *'ffMnSZ
do{ wXKg^%t\
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); a
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SortUtil.swap(data,l,r); D@
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} ly~tB LH}
while(l SortUtil.swap(data,l,r); zz_(*0,Qcr
SortUtil.swap(data,l,j); NwbX]pDT
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if((l-i)>THRESHOLD){ bD ADFitSo
stack[++top]=i; JKy06I
stack[++top]=l-1; f5o##ia7:
} F9PXQD(
if((j-l)>THRESHOLD){ .:/[%q{k
stack[++top]=l+1; Lsb` ,:
stack[++top]=j; FX,kmre3
} KqhE=2,
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} I:Q3r"1
file://new InsertSort().sort(data); cfhiZ~."T
insertSort(data); !l5&