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。 cO
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插入排序: @RF!p
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package org.rut.util.algorithm.support; g"sW_y_O
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import org.rut.util.algorithm.SortUtil; g&V1<n\b+
/** <}$o=>'
* @author treeroot 8wqHr@}p
* @since 2006-2-2 sP5\R#
* @version 1.0 M7;P)da
*/ ajz%3/R
public class InsertSort implements SortUtil.Sort{ aE(j_`L78
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/* (non-Javadoc) H-o>|C
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *:3`$`\54
*/
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public void sort(int[] data) { Ju#t^P
int temp; N&t+*kF_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); A/EW57v"
} %g4G&My@J
} bytAdS$3
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冒泡排序: .W<yiB}^
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package org.rut.util.algorithm.support; iIoeG_^*Y
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import org.rut.util.algorithm.SortUtil; wQX,a;Br
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/** Vn-y<*np
* @author treeroot ;V~[kF=t0
* @since 2006-2-2 c_li.]P
* @version 1.0 \ueo^p]_?
*/ pAo5c4y!4
public class BubbleSort implements SortUtil.Sort{ c} GH|i
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/* (non-Javadoc) J]A!>|Ic
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -Fe))Y'=
*/ 2R2ws.}
public void sort(int[] data) { O$
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int temp; [;/ydE=
for(int i=0;i for(int j=data.length-1;j>i;j--){ 9""e*-;Mi
if(data[j] SortUtil.swap(data,j,j-1); ? -PRS.=%
} l* =\0
} i[_WO2
} [kIiKLX
} ZzNp#FrX"
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} B`xrdtW
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选择排序: %o4ZD7@ '
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package org.rut.util.algorithm.support; \ s8j*
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import org.rut.util.algorithm.SortUtil; T\VKNEBo
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/** P\B ]><!ep
* @author treeroot /d*0+m8
* @since 2006-2-2 F/FUKXxx
* @version 1.0 I5l5fx
*/ 'a`cK;X9F
public class SelectionSort implements SortUtil.Sort { YQWGv,47\
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/* 3?F*|E_
* (non-Javadoc) "#d>3M_
* dBKL_'@@}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KErQCBeJ
*/ {;6Yi!
public void sort(int[] data) { t%$>
int temp; X\:;A {
for (int i = 0; i < data.length; i++) { r%*,pN7O
int lowIndex = i; uz6S7I
for (int j = data.length - 1; j > i; j--) { S:IhJQ4K
if (data[j] < data[lowIndex]) { qU(,q/l
lowIndex = j; 3 xSt -MA
} | N%?7PZ(
} fz[o;GTc
SortUtil.swap(data,i,lowIndex); 8LI,'XZ
} 1PD{m{
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} kcg{z8cd'r
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Shell排序: j\kT
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package org.rut.util.algorithm.support; +yvtd]D$2W
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import org.rut.util.algorithm.SortUtil; R_IUuz$e
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/** c]SXcA;Pmv
* @author treeroot J!40`8i
* @since 2006-2-2 9K]Li\
* @version 1.0 zPzy0lx
*/ &\8qN_`
public class ShellSort implements SortUtil.Sort{ '
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/* (non-Javadoc) J:<mq5[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eD4D<\*
*/ ws1io.
public void sort(int[] data) { l`S2bb6uMR
for(int i=data.length/2;i>2;i/=2){ ;L1Q"Hxh
for(int j=0;j insertSort(data,j,i); 37OU
} d??;r:
} dwd5P7
insertSort(data,0,1); <$6r1y*G
} ME.l{?v
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/** s!WGs_1@
* @param data T_\Nvzb}
* @param j d 8YP<"V&
* @param i &8p]yo2zO
*/ -;NGS
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private void insertSort(int[] data, int start, int inc) { hkS0 ae
int temp; bTBV:]w
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); M]c"4b;
} c`S`.WID
} X:N`x
} tu5g> qb
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} ~e|RVY,
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快速排序: 3K;V3pJ].
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package org.rut.util.algorithm.support; 73Zx`00
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import org.rut.util.algorithm.SortUtil; 8
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/** 0d>|2QV
* @author treeroot F9ytU> zh
* @since 2006-2-2 >:o$h2
* @version 1.0 {}.M(nPtv;
*/ I/2{I
public class QuickSort implements SortUtil.Sort{ 55Pe&V1=
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/* (non-Javadoc) Dq07Z^#'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n["G
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*/ &`@S_YLr
public void sort(int[] data) { A9 *P7
quickSort(data,0,data.length-1); :.DZ~I
}
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private void quickSort(int[] data,int i,int j){ ]|m?pt
int pivotIndex=(i+j)/2; >X@4wP7l
file://swap "SMRvi57T
SortUtil.swap(data,pivotIndex,j); + d?p? v
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int k=partition(data,i-1,j,data[j]); ;H' ,PjU
SortUtil.swap(data,k,j); CvOji1
if((k-i)>1) quickSort(data,i,k-1); '6g;UOx^=
if((j-k)>1) quickSort(data,k+1,j); (YV]T!q
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} scc+r
/** 84f(B E
* @param data d/"%fpp^0G
* @param i 7sX#6`t
* @param j CMhl* dH
* @return *A&A V||q
*/ PF+ F^;C
private int partition(int[] data, int l, int r,int pivot) { @23?II$=@
do{ I K9plsd*
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ,=a+;D]'
SortUtil.swap(data,l,r); ]F{F+r
} #]rfKHW9
while(l SortUtil.swap(data,l,r); "xI70c{
return l; QLm#7ms*y
} t6q7w
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} (Sv=R(_s
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改进后的快速排序: O#_\@f#[
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package org.rut.util.algorithm.support; ge#0Q L0K
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import org.rut.util.algorithm.SortUtil; "F[e~S#V*
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/** *Uw" `l
* @author treeroot `uwSxt
* @since 2006-2-2 =L\&}kzB
* @version 1.0 Kj7
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*/ ul-O3]\'@
public class ImprovedQuickSort implements SortUtil.Sort { w#d7
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private static int MAX_STACK_SIZE=4096; mI,a2wqi
private static int THRESHOLD=10; ).32Im!;#R
/* (non-Javadoc) >6KwZr BB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aCRiW;+'
*/ Mdw"^x$7
public void sort(int[] data) { {EjzJr>
int[] stack=new int[MAX_STACK_SIZE]; SgWLs%B
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int top=-1; xeB-fy)5+
int pivot; Z!+n/ D-1
int pivotIndex,l,r; 5_\1f|,
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stack[++top]=0; J4]tT pu"K
stack[++top]=data.length-1;
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while(top>0){ %N#A1
int j=stack[top--]; !ra,HkU'
int i=stack[top--]; 'F%h]4|1
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pivotIndex=(i+j)/2; XZ=%XB:?
pivot=data[pivotIndex]; lqcPV) n
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SortUtil.swap(data,pivotIndex,j); =TGa\iclpB
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file://partition `l'Ine11
l=i-1; *x/H
r=j; b:PzqMh{G
do{ Bun^EJ)
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Xf;_r+;
SortUtil.swap(data,l,r); mwMc AUD]2
} ,`ba?O?*G
while(l SortUtil.swap(data,l,r); yR% l[/ X
SortUtil.swap(data,l,j); 6T5\zInd
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if((l-i)>THRESHOLD){ sB*!Nf^y
stack[++top]=i; `i
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stack[++top]=l-1; 1j]vJ4R_\
} v]'\]U^
if((j-l)>THRESHOLD){ uovSe4q5q
stack[++top]=l+1; *m8{yh
stack[++top]=j; s$kvLy<
} SN 4JX
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} sk5B} -
file://new InsertSort().sort(data); zWrynJ}s
insertSort(data); Mn 8|
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} 9JqT"zj
/** ]*X z~Ox2
* @param data x9o(q`N
*/ *^iSP(dg
private void insertSort(int[] data) { Xb~i?T;f
int temp; "H9q%S,FH
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); k*rG^imX
} K}DrJ/s
} \8)FVpS
} .)E1|U[L
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} OD~yIV
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归并排序: Eb8~i_B-
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package org.rut.util.algorithm.support; ub2B!6f a
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import org.rut.util.algorithm.SortUtil; iX6*OEl/Q
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/** ;D<;pW
* @author treeroot VFK]{!C_
* @since 2006-2-2 jFl!<ooCo
* @version 1.0 T3Sz<K$E
*/ pI1g<pe
public class MergeSort implements SortUtil.Sort{ qN^]`M[ BY
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/* (non-Javadoc) g77 :92
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) },;Z<(
*/ [M#(su0fv
public void sort(int[] data) { )=!|^M
int[] temp=new int[data.length]; y,6KU$G
mergeSort(data,temp,0,data.length-1); >x]ir
} ~"Su2{"8B
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private void mergeSort(int[] data,int[] temp,int l,int r){ N+vsQ!Qz
int mid=(l+r)/2; z2jS(N?J1
if(l==r) return ; sT,*<^
mergeSort(data,temp,l,mid); L=5Y^f'aU
mergeSort(data,temp,mid+1,r); a{Y8hR
for(int i=l;i<=r;i++){ )Wk&c8|y
temp=data; ?weuq"*a
} Of-8n-
int i1=l; EgRuB@lw76
int i2=mid+1; h(i_'P?
for(int cur=l;cur<=r;cur++){ 8g?2( MT;
if(i1==mid+1) Y}h&dAr
data[cur]=temp[i2++]; F5+!Gb En
else if(i2>r) a :CeI
data[cur]=temp[i1++]; !FQS9SoO9
else if(temp[i1] data[cur]=temp[i1++]; O' Mma5
else dFZh1*1
data[cur]=temp[i2++]; z"*3p8N
} u63Q<P<