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。 /#\?1)jCK
插入排序: rt;gC[3\
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package org.rut.util.algorithm.support; HWbBChDF
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import org.rut.util.algorithm.SortUtil; W:B }u\)C
/** =
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* @author treeroot ( -2R{!A
* @since 2006-2-2 }:^X X0:FK
* @version 1.0 KZ\dB;W<|
*/ sA2o2~AmM
public class InsertSort implements SortUtil.Sort{ r%[1$mTOR
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/* (non-Javadoc) 7,su f }=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Su4h'&xx
*/ R#fy60
public void sort(int[] data) { ;y>'yq}
int temp; t'Htx1#Zc[
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); cUM_ncYOP
} ]
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冒泡排序: pP
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package org.rut.util.algorithm.support; Xa*?<(^`
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import org.rut.util.algorithm.SortUtil; A?sNXhh
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/** ,E]|\_]
* @author treeroot FLEg0/m0
* @since 2006-2-2 |w,^"j2R
* @version 1.0 u=l0f6W
*/ *vXDuhQ
public class BubbleSort implements SortUtil.Sort{ }{#7Z8
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/* (non-Javadoc) rJp?d9B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0O^r.&{j>
*/ ]nHe$x!2]
public void sort(int[] data) { / (.'*biQ
int temp; /J8o_EV
for(int i=0;i for(int j=data.length-1;j>i;j--){ F]Pul|.l
if(data[j] SortUtil.swap(data,j,j-1); lk~dgky@
} K9}jR@jy$
} 6i^0T
} n4XMN\:g{
} ?9,YVylg
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} W=M<
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选择排序: b/G8Mr
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package org.rut.util.algorithm.support; y#nSk%"t"
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import org.rut.util.algorithm.SortUtil; n<+~ zQ
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/** LP8o7%sv!
* @author treeroot krwf8!bI
* @since 2006-2-2 )*+u\x_Hx
* @version 1.0 yCZ2^P!a
*/ pO5v*oONz+
public class SelectionSort implements SortUtil.Sort { l`oT:
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/* @ >
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* (non-Javadoc) 7kOE/>P?
* Kl!DKeF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) US"2O!u
*/ rg"TJ"Q-
public void sort(int[] data) { N.k+AQb
int temp; S54gqc1S]
for (int i = 0; i < data.length; i++) { rR3m'[
int lowIndex = i; EF0Pt
for (int j = data.length - 1; j > i; j--) { TIKEg10I
if (data[j] < data[lowIndex]) { fWqv3nY^
lowIndex = j; <b3x(/
} 8x`Kl(
} ,d3Q+9/
SortUtil.swap(data,i,lowIndex); Ae3,W
} Am]2@ESUP
} <[esA9.]t
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} Hs.6;|0%
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Shell排序: MP_A<F
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package org.rut.util.algorithm.support; 70d] d+M|
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import org.rut.util.algorithm.SortUtil; \=$EmHF
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/** 7j4ej|Fjo
* @author treeroot jM{(8aUG
* @since 2006-2-2 ^n6)YX
* @version 1.0 |C&%S"*+D
*/ U#OWUZ
public class ShellSort implements SortUtil.Sort{ BYkVg2D(
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/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EKV+?jj$
*/ L?AM&w-cg9
public void sort(int[] data) { -ryDsq
for(int i=data.length/2;i>2;i/=2){ 3(cU)
for(int j=0;j insertSort(data,j,i); A%.J%[MVz
} K'a#M g
} 'Wo?%n
insertSort(data,0,1); *1 n;p)K
} VyB\]EBu
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/** c,+L +
* @param data 6~:W(E}
* @param j 82G lbd)
* @param i >DPds~k
*/ ^D%}V- "
private void insertSort(int[] data, int start, int inc) { *#ob5TBq[
int temp; 4r68`<mn[
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 6M
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} hr)+Pk
} BG(R=,
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} "#_)G7W+e
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} #i}# jMT
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快速排序:
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package org.rut.util.algorithm.support; ]
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import org.rut.util.algorithm.SortUtil; Td["l!-fe
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/** L:|X/c9r[
* @author treeroot EqNz L*E
* @since 2006-2-2 uzzWZ9Tv
* @version 1.0 yv6Zo0s<J
*/ _QC?:mv6-
public class QuickSort implements SortUtil.Sort{ 7/5NaUmPTt
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/* (non-Javadoc) ]%cHm4#m3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'xLM>6[wz
*/ ,v$2'm)V
public void sort(int[] data) { 1]D/3!
quickSort(data,0,data.length-1); k;"R y8[k
} INN/VDsJ
private void quickSort(int[] data,int i,int j){ SdjUhR+o
int pivotIndex=(i+j)/2; CS^ oiV%{s
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SortUtil.swap(data,pivotIndex,j); }mtC6G41Q
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int k=partition(data,i-1,j,data[j]); wHBHkz
SortUtil.swap(data,k,j); CrRQPgl+u
if((k-i)>1) quickSort(data,i,k-1); uMiD*6,$<
if((j-k)>1) quickSort(data,k+1,j); "/ a*[_sV
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} 4U LJtM3
/** ?9wFV/
* @param data !4qps$p{
* @param i p[af[!
* @param j :>AW@SoTp
* @return qb>|n1F_
*/ rE
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private int partition(int[] data, int l, int r,int pivot) { hB2s$QS
do{ P!)7\.7
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); R"9oMaY
SortUtil.swap(data,l,r); M[`w{A
} kB$,1J$q
while(l SortUtil.swap(data,l,r); BCa90
return l; 1{\,5U&
} BM=V,BZy
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改进后的快速排序: X1
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package org.rut.util.algorithm.support; &dwI8@&
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import org.rut.util.algorithm.SortUtil; t9$AvE#a!=
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/** Y7b,td1
* @author treeroot cW~6@&zp
* @since 2006-2-2 ]$?zT`>(F
* @version 1.0 m"?'hR2
*/ ||*&g2Y
public class ImprovedQuickSort implements SortUtil.Sort { A^= Hu,"e
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private static int MAX_STACK_SIZE=4096; fRv
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private static int THRESHOLD=10; C,VqT6E<
/* (non-Javadoc) O_s9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b Q9"GO<X
*/ Us@ {w`T
public void sort(int[] data) { [X$|dOm'N
int[] stack=new int[MAX_STACK_SIZE]; 1=/MT#d^?
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int top=-1; vBCZ/F[
int pivot; [#
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int pivotIndex,l,r; pT_e;,KW
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stack[++top]=0; RB$ 8^#
stack[++top]=data.length-1; 2os6c te
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while(top>0){ +n8I(l=
int j=stack[top--]; 9rf|r
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int i=stack[top--]; )@lo ';\
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pivotIndex=(i+j)/2; 8^ ~ZNU-~v
pivot=data[pivotIndex]; kw-Kx4 )
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SortUtil.swap(data,pivotIndex,j); =aCIaL&9Y
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file://partition YiI:uG!|D
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r=j; b3 %&
do{ ,mE]?XyO
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); G(Idiw#WT
SortUtil.swap(data,l,r); pRk'GR]`
} _uy5?auQ
while(l SortUtil.swap(data,l,r); ''\cBM!
SortUtil.swap(data,l,j); 1
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if((l-i)>THRESHOLD){ hF=V
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stack[++top]=i; (J,Oh
stack[++top]=l-1; h.s<0.
} 45O6TqepN
if((j-l)>THRESHOLD){ ^&G O4u
stack[++top]=l+1; x"C93ft[
stack[++top]=j; BB73'W8y
} te)g',#lT
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} ^) b7m
file://new InsertSort().sort(data); WE Svkm;
insertSort(data); ]K0,nj*\c
} -)->Jx:{
/** HNHhMi`w
* @param data t&Y^W <
*/ V@+<,tjq
private void insertSort(int[] data) { dv4r\ R^
int temp; (m =u;L"o
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $Bwvw)(%
} ;KjMZ(Iil1
} pQgOT0f
} /wCxf5q0
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} ?;.+A4
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归并排序: uwS'*5tU
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package org.rut.util.algorithm.support; hwol7B>
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import org.rut.util.algorithm.SortUtil; Nm:|C 3_I
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/** ?k7/`gU
* @author treeroot 1
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* @since 2006-2-2 =ILo`Q~
* @version 1.0 <812V8<!
*/ T?}=k{C]
public class MergeSort implements SortUtil.Sort{ =L; n8~{@y
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/* (non-Javadoc) ~zOU/8n
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o'}Z!@h
*/ va*>q-QCr
public void sort(int[] data) { ea[a)Z7#
int[] temp=new int[data.length]; xyJgHbml
mergeSort(data,temp,0,data.length-1); <wGTs6
} XkfUPbU
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private void mergeSort(int[] data,int[] temp,int l,int r){ );.<Yf{c
int mid=(l+r)/2; qaSv]k.
if(l==r) return ; 1p5q}">z
mergeSort(data,temp,l,mid); 93p9?4;n-
mergeSort(data,temp,mid+1,r); RkXLE"G'
for(int i=l;i<=r;i++){ t-ReT_D|;
temp=data; Z_ *ZUN?B
} '`A67bdq)
int i1=l; K/LaA4
int i2=mid+1; =VI`CBQ/Um
for(int cur=l;cur<=r;cur++){ h^,YYoA$
if(i1==mid+1) x: wq"X
data[cur]=temp[i2++]; vH\nL>r
else if(i2>r) O7_NXfh|
data[cur]=temp[i1++]; K]azUK7
else if(temp[i1] data[cur]=temp[i1++]; }j<_JI
else #(}_2x5
data[cur]=temp[i2++]; b:d.Lf{y7
} { dxyBDK
} xx2:5
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} '
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改进后的归并排序: K>p:?w
Uc;IPS
package org.rut.util.algorithm.support; 5TW<1'u
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import org.rut.util.algorithm.SortUtil; gmH0-W)=
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/** p.7p,CyB
* @author treeroot RPqn#B
* @since 2006-2-2
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* @version 1.0 g<jK^\eW
*/ -Y,Ibq
public class ImprovedMergeSort implements SortUtil.Sort { w9?wy#YI
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private static final int THRESHOLD = 10; G!lykk]
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/* ]V7hl#VO
* (non-Javadoc) *>H'@gS
* 4>eg@s N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pv.),Iv-68
*/ X~VZ61vNu
public void sort(int[] data) { >R !I
int[] temp=new int[data.length]; :<G+)hIK
mergeSort(data,temp,0,data.length-1); TgG)btQ
} ~x#-#nuh"
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private void mergeSort(int[] data, int[] temp, int l, int r) { =7Gi4X%
int i, j, k; fH{$LjH(
int mid = (l + r) / 2; xo3)dsX
if (l == r) X7!A(q+h
return; *VAi!3Rx;
if ((mid - l) >= THRESHOLD) "@bk$o=
mergeSort(data, temp, l, mid); b<MMli
else os+wTUR^
insertSort(data, l, mid - l + 1); ,tc]E45
if ((r - mid) > THRESHOLD) obkv ]~
mergeSort(data, temp, mid + 1, r); a'.=.eDQ
else \shoLp
insertSort(data, mid + 1, r - mid); 5%$kAJZC-
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