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。 \k=.w
插入排序: nC3U%*l
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package org.rut.util.algorithm.support; ,6zH;fi
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import org.rut.util.algorithm.SortUtil; !*0\Yi,6
/** ~ E)[!y
* @author treeroot 2 NgEzY5
* @since 2006-2-2 LWB"}#vt
* @version 1.0 M1MpR+7S
*/ 5pBQ~m3
public class InsertSort implements SortUtil.Sort{ <(]e/}
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/* (non-Javadoc) e#YQA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _l&`*
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*/ KUdpOMYX
public void sort(int[] data) { uhuwQS=X
int temp; ZD9UE3-
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >A$J5B>d
} W |]24
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冒泡排序: v5|X=B>&>
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package org.rut.util.algorithm.support; ,KlTitJl\+
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import org.rut.util.algorithm.SortUtil; g& yR -
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/** M-!eL<
* @author treeroot 41<.e`{
* @since 2006-2-2 zfE;)K^"
* @version 1.0 aW8Bx\q
*/ `L(AvSR
public class BubbleSort implements SortUtil.Sort{ y)W.xR
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/* (non-Javadoc) W^2Q"c#7F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e&C(IEZ/N;
*/ kU8V,5
public void sort(int[] data) { )$/Gh&1G
int temp; 2&E1) ^
for(int i=0;i for(int j=data.length-1;j>i;j--){ !8"516!d|p
if(data[j] SortUtil.swap(data,j,j-1);
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} C7(kV{h$d
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} \o^M ,yI
} eH2.,wY1
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选择排序: k;p:P ?s5Y
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package org.rut.util.algorithm.support; MOJ-q3H^W
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import org.rut.util.algorithm.SortUtil; "HW~|M7>(
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/** R1z\b~@"
* @author treeroot l1~>{:mq
* @since 2006-2-2 4WnB{9
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* @version 1.0 R/
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*/ "t+VF4r
public class SelectionSort implements SortUtil.Sort { slEsSR'J]
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/* 29g("(}TK
* (non-Javadoc) (=${@=!z
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m :ROq
*/ ^f{+p*i}:
public void sort(int[] data) { o<e AZ
int temp; ,cs`6Bd4
for (int i = 0; i < data.length; i++) { i=%wZHc;
int lowIndex = i; .J3lo:
for (int j = data.length - 1; j > i; j--) { S @\Pki+n[
if (data[j] < data[lowIndex]) { aWVJx@f
lowIndex = j; JBdZ]
} 0@E[IDmp
} \GeUX<Fl
SortUtil.swap(data,i,lowIndex); -OZRSjmY
} 5gg_c?Vh/
} v709#/cR
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} 6hSj)
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Shell排序: $Q1:>i@I|g
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package org.rut.util.algorithm.support; `gy]|gS#b
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import org.rut.util.algorithm.SortUtil; KcVCA
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/** b/oJ[Vf
* @author treeroot p"/1Kwqx
* @since 2006-2-2 'DlY8rEGP
* @version 1.0 /reSU 2
*/ i\G@ kJNnF
public class ShellSort implements SortUtil.Sort{ :{C#<g`
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/* (non-Javadoc) |_aE~_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z6bTcs"7h
*/ DY?`Y%"
public void sort(int[] data) { ]j0v.[SX
for(int i=data.length/2;i>2;i/=2){ I ms?^`N
for(int j=0;j insertSort(data,j,i); bT>%
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} 8QDRlF:;<
} ~=P&wBnJ
insertSort(data,0,1); j& f-yc'i-
} xfqgK D>
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/** gOa'o<
* @param data PdJtJqA8h\
* @param j }:YS$'by
* @param i 4~4PZ
*/ Z~$=V:EA?
private void insertSort(int[] data, int start, int inc) { F<X)eO]tk
int temp; b mZRCvW>A
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 5bGV91
} V@<tIui$
} 5KU}dw>*g
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} D0=D8P}H:
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快速排序: ,JRYG<O_T
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package org.rut.util.algorithm.support; L.lmbxn
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import org.rut.util.algorithm.SortUtil; ~my\{q
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/** #ldNWwvRGj
* @author treeroot 4(2}O-~
* @since 2006-2-2 rE[*iq,#
* @version 1.0 p+#J;.
*/ O9oVx4=
public class QuickSort implements SortUtil.Sort{ +"Ek?
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/* (non-Javadoc) Jg3}U j2By
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ua\g*Cxh
*/ 2pH2s\r<UJ
public void sort(int[] data) { 3Z NYR'
quickSort(data,0,data.length-1); !NK8_p|X
} EUmQn8
private void quickSort(int[] data,int i,int j){ .Ff;St
int pivotIndex=(i+j)/2; 7*d}6\
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SortUtil.swap(data,pivotIndex,j); -MJ6~4k2
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int k=partition(data,i-1,j,data[j]); ^%|{>Mz;c
SortUtil.swap(data,k,j); c, \TL
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if((k-i)>1) quickSort(data,i,k-1); f8_5.vlw
if((j-k)>1) quickSort(data,k+1,j); YMad]_XOP
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} ]3xnq<
/** fXvJ3w(
* @param data TLl*gED
* @param i S*?'y
* @param j aePhtQF
* @return R*/%+
*/ 3\|e8(bc
private int partition(int[] data, int l, int r,int pivot) { }k7@
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do{ `;*%5WD%
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); yPn5l/pDDr
SortUtil.swap(data,l,r); u2y?WcMv
} J:)Q)MT24:
while(l SortUtil.swap(data,l,r); -7TT6+H)
return l; lMB^/-Y
} {HNGohZt
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} :)t1>y>3
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改进后的快速排序: ny'~pT'00
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package org.rut.util.algorithm.support; _
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import org.rut.util.algorithm.SortUtil; }E[S%W[
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/** \=v7'Hp
* @author treeroot XUfj 0
* @since 2006-2-2 R0_%M
* @version 1.0 X3%7VFy9
*/ U%"c@%B0
public class ImprovedQuickSort implements SortUtil.Sort { [{ K$sd
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private static int MAX_STACK_SIZE=4096; s{x2RDAt
private static int THRESHOLD=10; qxG@Zd
/* (non-Javadoc) B-|:l7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0Q_AF`"
*/ ;:vbOG#aSN
public void sort(int[] data) { k]lM%
int[] stack=new int[MAX_STACK_SIZE]; Yb]eWLv
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int top=-1; zPWG^
int pivot; 7ml,
int pivotIndex,l,r; {tk42}8k
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stack[++top]=0; D&0*+6j((
stack[++top]=data.length-1; <`9Q{~*=t
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while(top>0){ M '$n".,p
int j=stack[top--]; WM*[+8h
int i=stack[top--]; R"];`F(#
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pivotIndex=(i+j)/2; H5S>|"`e`e
pivot=data[pivotIndex]; Q*ZqY
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SortUtil.swap(data,pivotIndex,j); iyc}a6g
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do{ L10Vq}W"
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); qi;@A-cq
SortUtil.swap(data,l,r); Pan^@B=Q
} ha1 J^e
while(l SortUtil.swap(data,l,r); q!$ZBw-7>A
SortUtil.swap(data,l,j); m!er"0
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if((l-i)>THRESHOLD){ {vx{Hwyv
stack[++top]=i; CSRcTxH
stack[++top]=l-1; z,87;4-
} }N#jA yp!
if((j-l)>THRESHOLD){ s7tNAj bgD
stack[++top]=l+1; Z`o}xV
stack[++top]=j; [~`;
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} A 7'dD$9
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} 7C9qkQ
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file://new InsertSort().sort(data); Yl% Ra1
insertSort(data); O`g44LW2n
} xqmP/1=NO
/** Xnt`7L<L
* @param data zq80}5%2CT
*/ rOm)s'
private void insertSort(int[] data) { 7h<B:~(K
int temp; ;VSHXU'H
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z|=l^u6uS
} >7!4o9)c
} Q[;!z1ur
} T-xcd
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归并排序: 4};iL)
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package org.rut.util.algorithm.support; q{n~v>wU
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import org.rut.util.algorithm.SortUtil; QxwZ$?w%
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/** Mc>]ZAz r
* @author treeroot 8c3`IIzAS
* @since 2006-2-2 Q%o ]&Hdn
* @version 1.0 I;qeDCM
*/ S7P](F=n#
public class MergeSort implements SortUtil.Sort{ ]7^OTrZ N
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/* (non-Javadoc) YC - -&66
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4xk'R[v
*/ 1`Cr1pH
public void sort(int[] data) { Q!7Er
int[] temp=new int[data.length]; l]%_D*<Y
mergeSort(data,temp,0,data.length-1); nmn$$=~)
} w}zl=w{G
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private void mergeSort(int[] data,int[] temp,int l,int r){ K
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int mid=(l+r)/2; ~e@QJ=r
if(l==r) return ; B'"C?d<7
mergeSort(data,temp,l,mid); T;w%-k\<r
mergeSort(data,temp,mid+1,r); 0R\lm<&
for(int i=l;i<=r;i++){ )}\jbh>RH
temp=data; ;hA>?o_i(
} ^&am