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。 4B$|UG
插入排序: >`o;hTS
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package org.rut.util.algorithm.support; klxNGxWAX
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import org.rut.util.algorithm.SortUtil; cVuT|b^
/** Xn
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* @author treeroot Z>(K|3_
* @since 2006-2-2
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* @version 1.0 @D+2dT0[M
*/ gvCQ![
public class InsertSort implements SortUtil.Sort{ y$`@QRW
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/* (non-Javadoc) Y |'}VU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M=#'+CF}W
*/ vV*i)`IXe
public void sort(int[] data) { 0.z\YTZ9
int temp; MNu\=p\Eq
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;Yu|LaI\<m
} ,ocAB;K
} i>{.Y};
} R>y/Y<5=
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} b<8,'QgB
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冒泡排序: ),5|Ves;t[
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package org.rut.util.algorithm.support; &at>sQ'
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import org.rut.util.algorithm.SortUtil; 91\]Dg
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/** kX "*kD
* @author treeroot ?G<.W[3
* @since 2006-2-2 HC(7,3
* @version 1.0 <Wa7$ h F
*/ \Y^GA;AMQQ
public class BubbleSort implements SortUtil.Sort{ Ngw/H)<c
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/* (non-Javadoc) RhD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z#Db~
*/ |"i"8~/@<
public void sort(int[] data) { 0@/C5 v
int temp; nNpXkI:
for(int i=0;i for(int j=data.length-1;j>i;j--){ 'tn-o
if(data[j] SortUtil.swap(data,j,j-1); UoOxGo
} <RJ+f-
} EWK?vs
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} &h'NC%"v
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} $VnPs!a
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选择排序: <m0m8p"G
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; >TG#
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/** T07 AH
* @author treeroot 80"oT'ZFh
* @since 2006-2-2 1HBWOV7z.?
* @version 1.0 bEB9J-
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*/ +O!4~k^
public class SelectionSort implements SortUtil.Sort { 8Az|SJ<
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/* 9" cyZO
* (non-Javadoc)
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* 9O|k|FD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yII+#?D
*/ V@pUU~6R
public void sort(int[] data) { nQ08(8
int temp; N4$ K{
for (int i = 0; i < data.length; i++) { }S 6h1X
int lowIndex = i; P asVfC@
for (int j = data.length - 1; j > i; j--) { C"R}_C|r)*
if (data[j] < data[lowIndex]) { 'H-hp
lowIndex = j; YYF.0G}
} 0S&C[I
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} c!]Q0ib6
SortUtil.swap(data,i,lowIndex); g>;"Fymc'
} Mk8k,"RG&Z
} =h,J!0Y
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} `2hLs _
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Shell排序: .Z(Q7j^
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package org.rut.util.algorithm.support; +c' n,O~3
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import org.rut.util.algorithm.SortUtil; I|.
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/** IubzHf
* @author treeroot z
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* @since 2006-2-2 ? $.x%G+
* @version 1.0 cf%aOHYI*
*/ E'^ny4gL
public class ShellSort implements SortUtil.Sort{ 8u7QF4
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/* (non-Javadoc) He1~27+99
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F0ylJ
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*/ hq?F81
public void sort(int[] data) { ZwMd 22
for(int i=data.length/2;i>2;i/=2){ 3u/ GrsF
for(int j=0;j insertSort(data,j,i); 2?kVbF
} D*t[5,~j
} 58t~? 2E
insertSort(data,0,1); h(p cGE
} O:Wd
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/** &"d
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* @param data vDCbD#.6
* @param j JfRqOEP4Y
* @param i ufo\p=pGG
*/ &Xi]0\M)
private void insertSort(int[] data, int start, int inc) { lm|s%
int temp; m'WGK`WIm
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); BFZ\\rN`
} ?I"FmJ;
} ?KG4Z
} ~(]'ah,
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} TGuCIc0B{
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快速排序: T'a&
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package org.rut.util.algorithm.support; A`1-c
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import org.rut.util.algorithm.SortUtil; ';LsEI[
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/** <SiJA`(7
* @author treeroot Lw`}o` D
* @since 2006-2-2 uTvf[%EHW
* @version 1.0 N`O0jH{
*/ >N"=10
public class QuickSort implements SortUtil.Sort{ )3^#CD
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/* (non-Javadoc) ~h$
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .F3~eas
*/ VVqpzDoXG
public void sort(int[] data) { (@Eb+8Zd
quickSort(data,0,data.length-1); 6kO+E5;X
} DTl&V|h$
private void quickSort(int[] data,int i,int j){ zS'{F>w
int pivotIndex=(i+j)/2; ! q+>'Mt
file://swap ]CX^!n
SortUtil.swap(data,pivotIndex,j); -qG7, t
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int k=partition(data,i-1,j,data[j]); h<i.Z7F;tj
SortUtil.swap(data,k,j); 2=$ F*B>9
if((k-i)>1) quickSort(data,i,k-1); )h1 `?q:5
if((j-k)>1) quickSort(data,k+1,j); (zw.?ADPCT
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} |WSmpuf
/** ~*L@|?
* @param data l"%WXi"X
* @param i 99~ZZG
* @param j QB*n
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* @return U["IXR#
*/ j.:f=`xf
private int partition(int[] data, int l, int r,int pivot) { 64D4*GQ
do{
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); wrVR[v>E<
SortUtil.swap(data,l,r); syk,e4:oA
} JqtOoR
while(l SortUtil.swap(data,l,r); 4F+G;'JV
return l; i}@5<&J
} =Ds&ArG
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} JC9OL.Ob
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改进后的快速排序: sI@kS^
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package org.rut.util.algorithm.support; aZ}z/.b]
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import org.rut.util.algorithm.SortUtil; J7k=5Fqej;
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/** W3&~[DS@~
* @author treeroot Ox6^=D"
* @since 2006-2-2 TSj)XU {W
* @version 1.0 \b?O+;5Cj
*/ XlJ+:st
public class ImprovedQuickSort implements SortUtil.Sort { 5D>cbzP@
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private static int MAX_STACK_SIZE=4096; 'Me(qpsq
private static int THRESHOLD=10; 8xHjdQr
/* (non-Javadoc) }R`}Ey|{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '8b=4mrbH
*/ _#w5hXcu
public void sort(int[] data) { a]4|XJ_
int[] stack=new int[MAX_STACK_SIZE]; j2 jUrl
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int top=-1; mWuhXY^Q
int pivot; ;(IAhWE?7
int pivotIndex,l,r; =h}PL22
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stack[++top]=0; n;k
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stack[++top]=data.length-1; I bE Nq
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while(top>0){ ;h#CT#R2
int j=stack[top--]; M \>5" ,0
int i=stack[top--]; `7'=~BP?X
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pivotIndex=(i+j)/2; ,62BZyT,T,
pivot=data[pivotIndex]; 2Oy-jM
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SortUtil.swap(data,pivotIndex,j); _? u} Jy_
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file://partition = %wBC;
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do{ #uuNH(
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #}xPOz7:
SortUtil.swap(data,l,r); rH[Eh8j,
} A{Q~@1
while(l SortUtil.swap(data,l,r); #b{;)C fL
SortUtil.swap(data,l,j); g")pvK[e
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if((l-i)>THRESHOLD){ EZ^M?awB4
stack[++top]=i; 4'XCO+i#
stack[++top]=l-1; &XSe&1
} Wl3fR[@3Q
if((j-l)>THRESHOLD){ G[!<mh4h|
stack[++top]=l+1; a0Q\]S
stack[++top]=j; CvqUaHW@
} ;sd] IZ$#
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} 5fK<DkB$>:
file://new InsertSort().sort(data); vo2 T P:
insertSort(data); jce2lXMm
} n/IDq$/P
/** r-o6I:y
* @param data !Ly1!;<
*/ `Dv&.
private void insertSort(int[] data) { Fr9_!f
int temp; FBrJVaF
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [
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} U&y?3
} sB`zk[R;
} fhe%5#3
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} ">S.~'ds
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归并排序: xiQ;lE
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package org.rut.util.algorithm.support; i- r y5x
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import org.rut.util.algorithm.SortUtil; u1(8a%ZC
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/** r$-]NYPi
* @author treeroot vm "dE4W=
* @since 2006-2-2 :@+@vM;gh
* @version 1.0 7(KVA1P66
*/ "_e/O&-cH
public class MergeSort implements SortUtil.Sort{ GZ/vUe
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/* (non-Javadoc) M \3Zj(E/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1(WNrVm;
*/ %R1$M318
public void sort(int[] data) { -j"2rIl4#
int[] temp=new int[data.length]; 5}2XnM2
mergeSort(data,temp,0,data.length-1); aD8r:S\
} x)o`w"]al
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private void mergeSort(int[] data,int[] temp,int l,int r){ {siIRl2&
int mid=(l+r)/2; KR/SMwy
if(l==r) return ; *7 >K" j
mergeSort(data,temp,l,mid); -AU!c^-o
mergeSort(data,temp,mid+1,r); 9~WjCa*,&
for(int i=l;i<=r;i++){ yn-TN_/Y,
temp=data; \~'+TW
} p*(]8pDC
int i1=l; V .VV:`S
int i2=mid+1; Fs)m;C
for(int cur=l;cur<=r;cur++){ .=4k'99,
if(i1==mid+1) a,*~wmg
data[cur]=temp[i2++]; d/`Q,Vl
else if(i2>r) UI.>BZ6}
data[cur]=temp[i1++]; uSK<{UT~3
else if(temp[i1] data[cur]=temp[i1++]; $WK~|+"{>
else ~gvw6e*[
data[cur]=temp[i2++]; {F+iL&e)
} n:[GK_
} 9dD;Z$x&Xk
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} ;?0r,0l2$
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改进后的归并排序: /*5lO;!s{
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package org.rut.util.algorithm.support; 9q!./)
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import org.rut.util.algorithm.SortUtil; ]pP [0S
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/** 96
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* @author treeroot q%A.)1<'_
* @since 2006-2-2 lGtTZcg
* @version 1.0 " )_-L8
*/ [boB4>.
public class ImprovedMergeSort implements SortUtil.Sort { kI>PaZ`i)
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private static final int THRESHOLD = 10; YE\s<$
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/* IQ"9#{o
* (non-Javadoc) !o&