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。 +Nv&Qu%
插入排序: gEIjG
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package org.rut.util.algorithm.support; .=3Sm%
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import org.rut.util.algorithm.SortUtil; U&C\5N]
/** ^>h
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* @author treeroot =R:3J"ly0
* @since 2006-2-2 '1~mnmiP
* @version 1.0 0fxA*]h
*/
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public class InsertSort implements SortUtil.Sort{ 9Vxsv*OR,
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/* (non-Javadoc) r&A#h;EQX2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3lMmSKN
*/ g v&xC 6>
public void sort(int[] data) { 3*CF !Y%
int temp; <\8dh(>
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Yt++?
} ;EW]R9HCH
} ~PHAC@pU
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冒泡排序: hx+a.N
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package org.rut.util.algorithm.support; {{ R/:-6?@
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import org.rut.util.algorithm.SortUtil; QJTGeJ
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/** bICi'`
* @author treeroot wHWd~K_q
* @since 2006-2-2 W~.1f1)
* @version 1.0 6NZ3(
*/ qdCa]n!d
public class BubbleSort implements SortUtil.Sort{ D4}WJMQ7s
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/* (non-Javadoc) !a[
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &1F)/$,v
*/ -1Lh="US
public void sort(int[] data) { y,DK@X
int temp; N1\u~%AT"
for(int i=0;i for(int j=data.length-1;j>i;j--){ }pu2/44=W
if(data[j] SortUtil.swap(data,j,j-1); r444s8Y
} ) Y\} ,O
} }bIEW ho
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} ;pU9ov4)
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选择排序: X@JDfn?A
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package org.rut.util.algorithm.support; CmJI"
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import org.rut.util.algorithm.SortUtil; _q)`Y:2
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/** |C=^:@}ri?
* @author treeroot d{9rEB?
* @since 2006-2-2 R{8nR00|1
* @version 1.0 ~~;fWM '
*/ >Hic
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public class SelectionSort implements SortUtil.Sort { 5A7!Xd
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/* _66zXfM<
* (non-Javadoc) 6.EfM^[
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *B)>5r
*/ $Z+N* w~8
public void sort(int[] data) { n1y#gC
int temp; X~ P0Q
for (int i = 0; i < data.length; i++) { +TpM7QaL
int lowIndex = i; UB .FX
for (int j = data.length - 1; j > i; j--) { cGsP0LkHC
if (data[j] < data[lowIndex]) { {h&*H[Z z
lowIndex = j; yIXM}i:
} ^(N+s?
} "0`r]5 5d
SortUtil.swap(data,i,lowIndex); k1$|vzMh
} <Sm=,Sw
} k:m~'r8z
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} I?4J69'
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Shell排序: 7T_g?!sdMh
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package org.rut.util.algorithm.support; qoB
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import org.rut.util.algorithm.SortUtil; 67 7p9{:
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/** <rRmbFH#
* @author treeroot 15iCJ p
* @since 2006-2-2 &^63*x;hE
* @version 1.0 &KbtW_
*/ miZ{V%
public class ShellSort implements SortUtil.Sort{ YDi_Gl$
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/* (non-Javadoc) `Wn0v2@a(~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0AJ6g@t[
*/ V,|l&-
public void sort(int[] data) { TkWS-=lNH0
for(int i=data.length/2;i>2;i/=2){ ;)0vxcMB
for(int j=0;j insertSort(data,j,i); hB P]^~(
} 0Hff/~J
} ?Sn$AS I
insertSort(data,0,1); r$k
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} .N_0rPO,Kw
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/** 6x*ImhQ.J
* @param data eJ'2CM6
* @param j ,EcmMI^A
* @param i >p\IC
*/ |oSyyDYWP
private void insertSort(int[] data, int start, int inc) { v :6`(5
int temp; *r:8=^C7S
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); lk6mu
} <~"q z*_
} T-fW[][&$
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快速排序: w gATfygr
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package org.rut.util.algorithm.support; ;?= ] ffa{
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import org.rut.util.algorithm.SortUtil; G{+sC2
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/** PS`)6yn{_
* @author treeroot ?h1]s&^|2
* @since 2006-2-2 hP3I_I[qF}
* @version 1.0 5{,/m"-
*/ zhHQJcQ.
public class QuickSort implements SortUtil.Sort{ `u %//m_(
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/* (non-Javadoc) eW\7X%I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ll[U-v{
*/ KDRIy@[e
public void sort(int[] data) { VH#]67
quickSort(data,0,data.length-1); rm2{PV<+d
} }k \a~<'X
private void quickSort(int[] data,int i,int j){ U>:CX
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int pivotIndex=(i+j)/2; `U2Z(9le
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SortUtil.swap(data,pivotIndex,j); ,GVHwTZ0`
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int k=partition(data,i-1,j,data[j]); L)8;96
SortUtil.swap(data,k,j); ?*[t'D9f-
if((k-i)>1) quickSort(data,i,k-1); wd..{j0&
if((j-k)>1) quickSort(data,k+1,j); 9Hlu%R
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} qIA!m
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/** f
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* @param data !?O:%QG
* @param i z[ z'.{;D
* @param j p*#SSR9<
* @return [7|}h/
*/ ;op+~@*!
private int partition(int[] data, int l, int r,int pivot) { qO&:J\d
do{ e3)rF5pp
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); C*kZ>mbc
SortUtil.swap(data,l,r); W`6nMFg
} r'{pTgm#
while(l SortUtil.swap(data,l,r); Sh2q#7hf
return l; >,uof ?
} Xw9,O8}C7
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} ]~3wq[O
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改进后的快速排序: 9OF5A<%"u
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package org.rut.util.algorithm.support; Z0b1E
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import org.rut.util.algorithm.SortUtil; #mx;t3ja7
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/** L
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* @author treeroot 7lR(6ka&/
* @since 2006-2-2 P1Re7/
* @version 1.0 47`{ e_YP0
*/ t!D=oBCro
public class ImprovedQuickSort implements SortUtil.Sort { fm&l0
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private static int MAX_STACK_SIZE=4096; HmbTV(lC
private static int THRESHOLD=10; GdL\
/* (non-Javadoc) m]7Y
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cCyg&% zsT
*/ qL A
public void sort(int[] data) { 6tzZ j:yq
int[] stack=new int[MAX_STACK_SIZE]; MI',E?#yB
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int top=-1; ;S,g&%N
int pivot; W%0-SR
int pivotIndex,l,r; }! zjj\g^
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stack[++top]=0; 7D9R^\K
stack[++top]=data.length-1; r-4I{GPb
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while(top>0){ "9kEqz4a
int j=stack[top--]; c?jjY4u
int i=stack[top--]; ;PG'em
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pivotIndex=(i+j)/2; 4sNM#]%|
pivot=data[pivotIndex]; 4J94iI>S.l
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SortUtil.swap(data,pivotIndex,j); I`Rxijz
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do{ *DDfdn
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); IGu*#>h
SortUtil.swap(data,l,r); RD{jYr;
} =k3QymA
while(l SortUtil.swap(data,l,r); m='+->O*'l
SortUtil.swap(data,l,j); Y<a/(`
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if((l-i)>THRESHOLD){ z)QyQ
stack[++top]=i; )TRDM[u
stack[++top]=l-1; E%H,Hk^
} g6
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if((j-l)>THRESHOLD){ 'Nfg%)-N
stack[++top]=l+1; 1D=My1B
stack[++top]=j; GbB&kE3KP
} ;h/Y9uYn
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} 8b6:n1<fn
file://new InsertSort().sort(data); F^`sIrZvs
insertSort(data); P5] cEZ n
} *$ ^ME
/** nU`vj`K
* @param data
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*/ szmjp{g0
private void insertSort(int[] data) { Br-y`s~cP
int temp; #cjB <APY
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #BT=
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} UT[KwM{y
}
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归并排序: rp(`V@x3
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package org.rut.util.algorithm.support; YdC:P#
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import org.rut.util.algorithm.SortUtil; _ogT(uYyr
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/** ;&JMBn]J
* @author treeroot J8/>b{Y
* @since 2006-2-2 H(?z?2b p
* @version 1.0 u@==Ut
*/ QD\S E
public class MergeSort implements SortUtil.Sort{ RsTpjY*Xb
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/* (non-Javadoc) *dUnP{6 g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DrMcE31
*/ w
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public void sort(int[] data) { [DjdR_9*I
int[] temp=new int[data.length]; ;9u6]%hQTX
mergeSort(data,temp,0,data.length-1); W]6Y
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} Yng9_w9Y
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private void mergeSort(int[] data,int[] temp,int l,int r){ z %mM#X
int mid=(l+r)/2; xA&