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。 8uP,#D<wZ
插入排序: Cf91#%:cN
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package org.rut.util.algorithm.support; W.r0W2))(
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import org.rut.util.algorithm.SortUtil; FWq+'GkSV
/** O6pswMhAc
* @author treeroot 2RFYnDN
* @since 2006-2-2 ylUxK{
* @version 1.0 IX$dDwY|O>
*/ p^3]Q
public class InsertSort implements SortUtil.Sort{ ='`z
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/* (non-Javadoc) }TzMWdT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .__XOd}K
*/ @i'RIL}
public void sort(int[] data) { )D{L<.i_
int temp; b^~ keQ
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); A5S9F8Q/]
} 1p[C5j3
} <4ccT l
} ` .|JTm[
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}
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冒泡排序: 'Ybd'|t{}
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package org.rut.util.algorithm.support; k@L},Td
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import org.rut.util.algorithm.SortUtil; lr'h
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/** "1FPe63\*O
* @author treeroot DzydS=`w
* @since 2006-2-2 |`+kZ-M*
* @version 1.0 ]v(8i3P84
*/ 0x7F~%%2
public class BubbleSort implements SortUtil.Sort{ Cc/h|4
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/* (non-Javadoc) Jr$,w7tQn@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PIR#M('
*/ VG0Ty;bV
public void sort(int[] data) { O-J;iX }
int temp; GvSSi'q~B
for(int i=0;i for(int j=data.length-1;j>i;j--){ <o@&I "
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if(data[j] SortUtil.swap(data,j,j-1); ajC'C!"^Ty
} W/!M
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} R4"*<%1
} ~P8 6=Vw
} ^,*ED Yz
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} ,V1/(|[h
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选择排序: 0zQ"5e?qy
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package org.rut.util.algorithm.support; K&Ner(/X`6
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import org.rut.util.algorithm.SortUtil; @ x_.
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/** '#RzX8|v<
* @author treeroot K2$ fKju
* @since 2006-2-2 yY_(o]k
* @version 1.0 XtY!fo*
*/ 3<}\{ jT
public class SelectionSort implements SortUtil.Sort { +Ysm6n '
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/* W!vN(1:(
* (non-Javadoc) wNo2$>*
* ,)/gy)~#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (3cJ8o>&
*/ x93h{Kf
public void sort(int[] data) { Zk,`
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int temp; kt`_n+G
for (int i = 0; i < data.length; i++) { .c__<I<G<
int lowIndex = i; EQ
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for (int j = data.length - 1; j > i; j--) { )4:K@
if (data[j] < data[lowIndex]) { qTSyy=
lowIndex = j; gZA[Sq
} I|zak](HU
} CD]hi,B_J
SortUtil.swap(data,i,lowIndex); L7i2is
} ;iT@41)7
} W>f q 9
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} s?Lx\?T
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Shell排序: 21NGsG
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package org.rut.util.algorithm.support; ?tzJ7PJ~B
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import org.rut.util.algorithm.SortUtil; 0lpkG
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/** mj{B_3b5
* @author treeroot mJ+M|#Ox
* @since 2006-2-2 #1Zqq([@
* @version 1.0 T_t5Tg~i[N
*/ di.yh3N$
public class ShellSort implements SortUtil.Sort{ -R%T Dx
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/* (non-Javadoc) &T.d"i
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "PgVvm#w'
*/ &10l80vj
public void sort(int[] data) { M3XG s|gw
for(int i=data.length/2;i>2;i/=2){ 6HroKu
for(int j=0;j insertSort(data,j,i); 9S'u1%
} -e_91WI
} *Bfo"["0.
insertSort(data,0,1); cp1-eR_&
} /80H.|8O
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/** @!p bR(8
* @param data Ibf~gr(j
* @param j 1O#]qZS}]
* @param i ;x<5F+b
*/ mJxr"cwHl
private void insertSort(int[] data, int start, int inc) { (vX)
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int temp; TxJoN]Z.
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 1`hmD1d
} oX=dJJE
} tIK`/)w,
} _+!@c6k)ra
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} R*[X. H
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快速排序: :g%hT$,]3b
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package org.rut.util.algorithm.support; zA%YaekJ
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import org.rut.util.algorithm.SortUtil; 3Pu8IXW
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/** 1NAGGr00
* @author treeroot 7xF)\um
* @since 2006-2-2 18^#:=Z
* @version 1.0 U
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*/ ?F6L,
public class QuickSort implements SortUtil.Sort{ awXK9}.
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/* (non-Javadoc) L@5sY0 M
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gmUXh;aHc
*/ A%[e<vj9
public void sort(int[] data) { reQr=OAez
quickSort(data,0,data.length-1); sYEh>%mo^C
} 8Y]% S9.
private void quickSort(int[] data,int i,int j){ eA{nwtN
int pivotIndex=(i+j)/2; >&DC[)28
file://swap pV8_i7\
SortUtil.swap(data,pivotIndex,j); zq6)jHfq.
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int k=partition(data,i-1,j,data[j]); lRk_<A
SortUtil.swap(data,k,j); mEm=SpO[$o
if((k-i)>1) quickSort(data,i,k-1); XE>w&
if((j-k)>1) quickSort(data,k+1,j); LR "=(
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} >D
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/** E2xK GK
* @param data oF0DprP@
* @param i hW!2C6
* @param j z''ejq
* @return 85x34nT
*/ C669:%
private int partition(int[] data, int l, int r,int pivot) { bm*.*A]
do{ &6^ --cc
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); XS}-@5TI
SortUtil.swap(data,l,r); 216`rQ}z
} 2Z-[x9t
while(l SortUtil.swap(data,l,r); 2tb+3K1
return l; {RGQX"k
} 7lx"
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} r6eZ-V`4
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改进后的快速排序: w%?Zb[!&
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package org.rut.util.algorithm.support; zfD@/kU
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import org.rut.util.algorithm.SortUtil; GlHP`&;UH
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/** x?UAj8z6
* @author treeroot *rgF[
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* @since 2006-2-2 y6dQ4Whv&
* @version 1.0 -Qn l)JB
*/ 4VHWoN"U
public class ImprovedQuickSort implements SortUtil.Sort { VFrp7;z43
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private static int MAX_STACK_SIZE=4096; p,V%wGM
private static int THRESHOLD=10; 3(Ns1/;?,
/* (non-Javadoc) #bJp)&LO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _dY5qW1p
*/ RWRqu }a
public void sort(int[] data) { sf0\#Q
int[] stack=new int[MAX_STACK_SIZE]; VKtlAfXy~
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int top=-1; n0LNAhM
int pivot; h<Ct[46,S
int pivotIndex,l,r; ? 'qyI^m@
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stack[++top]=0; V|hwT^h
stack[++top]=data.length-1; cyLl,OA
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while(top>0){ ;PB_@Zg
int j=stack[top--]; K5rra%a-7
int i=stack[top--]; P5H_iH
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pivotIndex=(i+j)/2; m^\&v0
pivot=data[pivotIndex]; <-mhz`^
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SortUtil.swap(data,pivotIndex,j); G!`PP
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file://partition Lu~E5 ,
l=i-1; 6g\hQ\+Z}
r=j; $|g
;
do{ -dWg1`;
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); diNAT`|?#
SortUtil.swap(data,l,r); op@=0d??
} g${JdxR:
while(l SortUtil.swap(data,l,r); KYZ#.f@
SortUtil.swap(data,l,j); @tJ4^<`P{
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if((l-i)>THRESHOLD){ ^D]J68)#a
stack[++top]=i; blWtC/!Aq;
stack[++top]=l-1; #1C]ZV] B
} eIEL';N6
if((j-l)>THRESHOLD){ Qcks:|5
stack[++top]=l+1; @U4hq7xzV2
stack[++top]=j; l[]cUE
} )"?eug}D
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} Ud Vf/PGx
file://new InsertSort().sort(data); jU kxA7 }}
insertSort(data); 1l/t|M^I
} W
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/** ${E^OE
* @param data A|,qjiEJCc
*/ C0K:
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private void insertSort(int[] data) { fdWqc_
int temp; ^Vhl@
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); CPL,QVO9
} &S`g&
} pGfGGY>i%
} #?k</~s6M`
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} >&Oql9_
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归并排序: `a:3S@n(}
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package org.rut.util.algorithm.support; Fw*O ciC
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import org.rut.util.algorithm.SortUtil; zRa2iCi
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/** Mvue>)g~>
* @author treeroot $}r.fji,c
* @since 2006-2-2 Zxd*%v;
* @version 1.0
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*/ BVj(Q}f8
public class MergeSort implements SortUtil.Sort{ liG|#ny{
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/* (non-Javadoc) xkw=os
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u}%6=V
*/ !Vg=l[
public void sort(int[] data) { tHo|8c~[
int[] temp=new int[data.length];
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mergeSort(data,temp,0,data.length-1); \EU^`o+
} Ssuz%*
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private void mergeSort(int[] data,int[] temp,int l,int r){ w[\rS`J
int mid=(l+r)/2; #Q)r6V:
if(l==r) return ; `Oi#`lC\
mergeSort(data,temp,l,mid); A)4XQF
mergeSort(data,temp,mid+1,r); :s&dn%5N"
for(int i=l;i<=r;i++){ dHTx^1
temp=data; -Ci&h
} ^iBIp#
int i1=l; )`(]jx!
int i2=mid+1; <&3aP}
for(int cur=l;cur<=r;cur++){ ?]D))_|G
if(i1==mid+1) VH~YwO!x
data[cur]=temp[i2++]; 2IE\O8b
else if(i2>r) YvcV801Go
data[cur]=temp[i1++]; x{8h3.ZQ,
else if(temp[i1] data[cur]=temp[i1++]; 0MroHFh9`
else uoOUgNwGg
data[cur]=temp[i2++]; ^e <E/j{~
} Vs{\ YfF
} m2"e ]I
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} :b(W&iBWhI
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改进后的归并排序: b=1E87i@W
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package org.rut.util.algorithm.support; ^r.CUhx)
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import org.rut.util.algorithm.SortUtil; OA=~i/n~
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/** :UP8nq
* @author treeroot 9M3"'^ {$
* @since 2006-2-2 DpvHIE:W
* @version 1.0 d"miPR
*/ %7}j|eS)G
public class ImprovedMergeSort implements SortUtil.Sort { rD4umWi
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private static final int THRESHOLD = 10; Uavl%Q
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/* hmd3W`8D
* (non-Javadoc) (AtyM?*
* G%: 3.:E"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kyvl>I0q@
*/ |%F,n2
public void sort(int[] data) { ;Su-Y!&