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。 w,p
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插入排序: F`9xVnK=
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package org.rut.util.algorithm.support; 'A=^Se`=
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import org.rut.util.algorithm.SortUtil; b;B%q$sntC
/** A7Cm5>Y_S
* @author treeroot PFlNo` iO
* @since 2006-2-2 Gi|w}j_
* @version 1.0 $t'MSlF
*/ y4
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public class InsertSort implements SortUtil.Sort{ "rALt~AX
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/* (non-Javadoc) ^qvZXb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7dTkp!'X-
*/ Fbr;{T
.
public void sort(int[] data) { hn7#
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int temp; ~f&E7su-6+
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +/4A
} L^/5ux
} e9Wa<i8
} hE'-is@7
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冒泡排序: P-9)38`5
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package org.rut.util.algorithm.support; \"w"$9o6
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import org.rut.util.algorithm.SortUtil; r..iko]T
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/** jh?H.;**
* @author treeroot Y#ap*
* @since 2006-2-2 :DK {Vg6
* @version 1.0 bI7Vwyz
*/ z}77Eh<
public class BubbleSort implements SortUtil.Sort{ .FP$m?
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/* (non-Javadoc) '6nAF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T8?Ghbn
*/ <6%?OJhp
public void sort(int[] data) { e-})6)XgA
int temp; GLH0 ]
for(int i=0;i for(int j=data.length-1;j>i;j--){ U#7#aeI
if(data[j] SortUtil.swap(data,j,j-1); p}}R-D&K
} x xHY+(m
} '|6]_
} @(EAq<5{
} TNT4<5Ol6
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} t4."/.=+
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选择排序: 1fp?
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package org.rut.util.algorithm.support; `f,/`''R
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import org.rut.util.algorithm.SortUtil; Co9^OF-k
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/** rK8lBy:<
* @author treeroot XW2b| %T
* @since 2006-2-2 ol\Utq,
* @version 1.0 %Bj\W'V&p
*/ <)C#_w)-
public class SelectionSort implements SortUtil.Sort { np|Sy;:
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/* `$Y.Y5mGtJ
* (non-Javadoc) &~cBNw|
* ^ox=HNV
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +)AG*
*/ d(ZO6Nr Q
public void sort(int[] data) { ^`i#$
int temp; ^x ]r`b
for (int i = 0; i < data.length; i++) { :I] Mps<
int lowIndex = i; B9 _X;c
for (int j = data.length - 1; j > i; j--) { !NK1MU?T)
if (data[j] < data[lowIndex]) { ~Py`P'+
lowIndex = j; ;DQ ZT
} \{_q.;}
} RT4x\&q
SortUtil.swap(data,i,lowIndex); q_: 4w$>
} "`/h#np
} Qab>|eSm
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} -u+vJ6EY
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Shell排序: s2p\]|5
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package org.rut.util.algorithm.support; 3GYw+%Z]
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import org.rut.util.algorithm.SortUtil; +%z>H"J.
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/** @,j*wnR
* @author treeroot @f>-^
* @since 2006-2-2 '`[&}R
* @version 1.0 oi7@s0@
*/ fivw~z|[@
public class ShellSort implements SortUtil.Sort{ zy?|ODM
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/* (non-Javadoc) b<[Or^X
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *uRBzO}
*/ PA{PD.4Du
public void sort(int[] data) { dw>C@c#"
for(int i=data.length/2;i>2;i/=2){ _gR;=~S
for(int j=0;j insertSort(data,j,i); KJUH(]>F
} (*9$`!wS
} C\3rJy(VJ
insertSort(data,0,1); FW;?s+Uyx
} ]Jg&VXrH
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/** FBX'.\@`
* @param data Wx%H%FeK
* @param j kOrZv,qFG[
* @param i _#E0g'3
*/ {GT*ZU*
private void insertSort(int[] data, int start, int inc) { lWk>z; d
int temp; IVnHf_PzF
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); .bl/*s
} %bn jgy
} yf.~XUk^
} Mmj;-u
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} 8P\G}
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快速排序: 6dr%;Wp
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package org.rut.util.algorithm.support; 0cH`;!MZ
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import org.rut.util.algorithm.SortUtil; <]t%8GB2V
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/** 2eS~/Pq5=i
* @author treeroot =!A_^;NQf
* @since 2006-2-2 %g$o/A$
* @version 1.0 \ A#41
*/ Q~]uC2Mw
public class QuickSort implements SortUtil.Sort{ F`W?II?
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/* (non-Javadoc) Oc0a77@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U[-o> W#
*/ 9MJG;+B~
public void sort(int[] data) { 2%Ri,4SRb
quickSort(data,0,data.length-1); ]L.O8
} q'F+OQb1
private void quickSort(int[] data,int i,int j){ 3AtGy'NTp
int pivotIndex=(i+j)/2; r.&Vw|*>
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SortUtil.swap(data,pivotIndex,j); hpX9[3
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int k=partition(data,i-1,j,data[j]); R$<&ie6UQ
SortUtil.swap(data,k,j); ',@3>T**
if((k-i)>1) quickSort(data,i,k-1); `:KY\
if((j-k)>1) quickSort(data,k+1,j); M#6W(|V/
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} Wq&if_
/** ;?iW%:_,
* @param data %3-y[f
* @param i ,AFu C<
* @param j 9G5rcYi
* @return %JBz5G
*/ dt]-,Y
private int partition(int[] data, int l, int r,int pivot) { R4cM%l_#W
do{ nPl?K:(
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); `i*E~'
SortUtil.swap(data,l,r); w+|L+h3L7
} $szqy?i0?
while(l SortUtil.swap(data,l,r); 5r|,CQ7o
return l; OX!tsARC@
} 19)i*\+
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} -<!NXm|kvz
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改进后的快速排序: j{A y\n (
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package org.rut.util.algorithm.support; I"<\<^B<
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import org.rut.util.algorithm.SortUtil; xJ8M6O8
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/** mxC;?s;~
* @author treeroot zu{P#~21
* @since 2006-2-2 ,!y$qVg'\f
* @version 1.0 G 4X|Bka
*/ a~}OZ&PG
public class ImprovedQuickSort implements SortUtil.Sort { 0R'?~`aTt
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private static int MAX_STACK_SIZE=4096;
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private static int THRESHOLD=10; q
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/* (non-Javadoc) zKJ#`OhT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d#4**BM
*/ 0@iY:aF
public void sort(int[] data) { IY\5@PVZ
int[] stack=new int[MAX_STACK_SIZE]; b9HtR -iR;
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int top=-1; x*U)Y
int pivot; />pI8 g<
int pivotIndex,l,r; _op}1
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stack[++top]=0; 9IfmW^0
stack[++top]=data.length-1; ~KX/
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while(top>0){ l4YJ c
int j=stack[top--]; { @{']Y
int i=stack[top--]; Vaw+.sG`AP
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pivotIndex=(i+j)/2; 7WS p($
pivot=data[pivotIndex]; %RRNJf}z
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SortUtil.swap(data,pivotIndex,j); 051E6-
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file://partition _9Te!gJ4_#
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r=j; xr Jg\to{i
do{ @,my7?::oM
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); CxW>~O:
SortUtil.swap(data,l,r); ^%{7}g&$u
} T_5H&;a
while(l SortUtil.swap(data,l,r); kv{za4,&
SortUtil.swap(data,l,j); oY3;.;'bk
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if((l-i)>THRESHOLD){ 0 ZKx<]!
stack[++top]=i; $Sip$\+*
stack[++top]=l-1; Vv=. -&'
} |3"KK
if((j-l)>THRESHOLD){ PB*&aYLU
stack[++top]=l+1; ~P**O~
stack[++top]=j; :{l_FY436
} #r\4sVg
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} \V~eVf;~
file://new InsertSort().sort(data); Moza".fiN
insertSort(data); j>" @,B g*
} J<h$
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/** `l[c_%Bm
* @param data D'DfJwA
*/ v^*K:#<Q!
private void insertSort(int[] data) {
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int temp; <<5(0#y#
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); U$A]8NZ$S
} ^k">A:E2
} :OT0yA=U
} d^
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} !z3jTv
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归并排序: X5$ Iyis
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package org.rut.util.algorithm.support; 6?Ji7F
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import org.rut.util.algorithm.SortUtil;
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