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。 BS?$eai@:9
插入排序: k"/Rjd(;
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package org.rut.util.algorithm.support; )N1iGJO)
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import org.rut.util.algorithm.SortUtil; +/]*ChrS
/** }#g+~9UK
* @author treeroot ~
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* @since 2006-2-2 h%4UeL &F
* @version 1.0 ;#0$iE
*/ D. x8=|;
public class InsertSort implements SortUtil.Sort{ 7-}5
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/* (non-Javadoc) Z5)v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EYCZuJxv
*/ 9d(#/n
public void sort(int[] data) { C+5X8
int temp; Fr;
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); VEn3b
} vX}w_Jj>
} <8Nr;96IA
} 8pftc) k
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冒泡排序: I|<]>D -8
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package org.rut.util.algorithm.support; 6PS[OB{3
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import org.rut.util.algorithm.SortUtil; Q7<VuXy
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/** 6KXW]a `
* @author treeroot i?uX'apk
* @since 2006-2-2 B
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* @version 1.0 <hTHY E=
*/ #M+_Lk3
public class BubbleSort implements SortUtil.Sort{ PB5h5eX
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/* (non-Javadoc) T{"Ur:p
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k*\)z\f
*/ gFu,q`Vf*
public void sort(int[] data) { J]{<Z?%
int temp; z,2*3Be6V
for(int i=0;i for(int j=data.length-1;j>i;j--){ $ Y^0l
if(data[j] SortUtil.swap(data,j,j-1); ) jvI Nb
} re}PpXRC
} 1,Mm+_)B
} &/)B d%
} UL>2gl4s/
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} ~w|h;*Bj
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选择排序: yG7H>LF?8
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package org.rut.util.algorithm.support; z9g6%RbwX
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import org.rut.util.algorithm.SortUtil; SBs! 52
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/** M6^
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* @author treeroot cL;%2TMk
* @since 2006-2-2 HX}B#T
* @version 1.0 /93z3o7D>
*/ A*81}P_
public class SelectionSort implements SortUtil.Sort { @o^$/AE?
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/* P3Lsfi.
* (non-Javadoc) CV\y60n
* o|c6=77043
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vf+z0df
*/ M"/Jn[
public void sort(int[] data) { jX(${j<
int temp; &NoA, `|7
for (int i = 0; i < data.length; i++) { WWZ<[[ >
int lowIndex = i; (FaYagD
for (int j = data.length - 1; j > i; j--) { bDJ!Fc/
if (data[j] < data[lowIndex]) { q1x[hv3
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lowIndex = j; ~9yKMUf
} tgi%#8ZDpz
} vR2);ywX
SortUtil.swap(data,i,lowIndex); r=vY-p
} 5$HG#2"Kb#
} R9#ar{
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} bu_@A^ys
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Shell排序: |uw48*t
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package org.rut.util.algorithm.support; .35~+aqC
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import org.rut.util.algorithm.SortUtil; M<*Tp^Y'
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/** |)Dm.)/0)
* @author treeroot !t"/w6X1I
* @since 2006-2-2 {#,5C H')
* @version 1.0 t&=bW<6
*/ <#nU 06 fN
public class ShellSort implements SortUtil.Sort{ UXdc'i g
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/* (non-Javadoc) x>TIx[x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }5(_gYr
*/ I
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public void sort(int[] data) { 8Q<Nl=g>'
for(int i=data.length/2;i>2;i/=2){ ,Ww}xmq1H
for(int j=0;j insertSort(data,j,i); <PuY"-`/Oc
} Q<;EQb#
} 'PY;
insertSort(data,0,1); F+Qnf'at1
} e7{6<[k3+$
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/** 8~R.iqLoX
* @param data *GBV[D[G,
* @param j R+(f~ j'
* @param i 3ej237~F,L
*/ vfv?QjR
private void insertSort(int[] data, int start, int inc) { ~/-SKGzo-
int temp; ;nW;M 4{
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ('C)S)98C
} ecz-jZ!
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} Y,Z$U| U
} [7gz?9VyLF
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} Ao` e{
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快速排序: Oy=0Hsh@x
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package org.rut.util.algorithm.support; wzwv>@}
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import org.rut.util.algorithm.SortUtil; 8w:mL^6x
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/** 8~-TN1H
* @author treeroot 3))R91I
* @since 2006-2-2 Ua
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* @version 1.0 ;7?oJH;
*/ H,w8+vZ4\
public class QuickSort implements SortUtil.Sort{ wZ\93W-}
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/* (non-Javadoc) 1R~$m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6O6B8
*/ L%5y@b{AR
public void sort(int[] data) { U!o
quickSort(data,0,data.length-1); .u#Hg'o P
} ;
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private void quickSort(int[] data,int i,int j){ T5ky:{Y(
int pivotIndex=(i+j)/2; yGt[Qvx#
file://swap Ew
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SortUtil.swap(data,pivotIndex,j); ?;`GCE
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int k=partition(data,i-1,j,data[j]); 36+/MvIT
SortUtil.swap(data,k,j); \ 9V_[xD+
if((k-i)>1) quickSort(data,i,k-1); m]MR\E5]By
if((j-k)>1) quickSort(data,k+1,j); ),B/NZ/-
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} \M@IKE
/** >"<s7$g
* @param data w/(T
* @param i Nh^I{%.x
* @param j !9$}1_,is
* @return db_?da;!`
*/ HP[B%
private int partition(int[] data, int l, int r,int pivot) { {-m e;ayk
do{ O4oN)
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 'R+^+urq^
SortUtil.swap(data,l,r); VpHwc!APq
} e\[q3J
while(l SortUtil.swap(data,l,r); b' M"To@
return l; lrKT?siB
} ,pTZ/#vP#
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} Y#V(CIDe
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改进后的快速排序: 'h6G"=+
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package org.rut.util.algorithm.support; #'%ii,;wQ
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import org.rut.util.algorithm.SortUtil; ,JK0N_=
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/** 3T]cDVQ_
* @author treeroot y4p"LD5%^
* @since 2006-2-2 44P [P{y
* @version 1.0 Ce<z[?u
*/ oowofi(E
public class ImprovedQuickSort implements SortUtil.Sort { oi7k#^
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private static int MAX_STACK_SIZE=4096; Y]`=cR`/"
private static int THRESHOLD=10; ETL7|C"
/* (non-Javadoc) (9aOET>GG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) diM*jN#
*/ s-WZ3g
public void sort(int[] data) { jJ<&!=
int[] stack=new int[MAX_STACK_SIZE]; fmv:vs /9
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int top=-1; V*te8HIe
int pivot; )#\3c,<Y
int pivotIndex,l,r; U
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stack[++top]=0; iExKi1knx
stack[++top]=data.length-1; ^J7q,tvbJ
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while(top>0){ <BBzv-?D
int j=stack[top--]; jmq^98jB
int i=stack[top--]; &glh >9:G
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pivotIndex=(i+j)/2; !L9|iC:8
pivot=data[pivotIndex]; ?OnL,y|
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SortUtil.swap(data,pivotIndex,j); v ,h"u
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file://partition (_}q>3
l=i-1; B:v_5e\f@
r=j; DUu:et&c1
do{ C,>n
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); W%^!<bFk}m
SortUtil.swap(data,l,r); ^u$=<66
} Z P|k3
while(l SortUtil.swap(data,l,r); ]Ri=*KZa
SortUtil.swap(data,l,j); BRu}"29
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if((l-i)>THRESHOLD){ Ucy=I$"
stack[++top]=i;
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stack[++top]=l-1; ke W7pN?
} r>bgCQ#-n
if((j-l)>THRESHOLD){ #| gh
stack[++top]=l+1; _8 K|2$X
stack[++top]=j; lj&\F|-i
} vYXh WqL~
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} s1W n.OGR4
file://new InsertSort().sort(data); hC<E4+5.,
insertSort(data); mpwh=
} R|qNyNXo[
/** TeZu*c
* @param data Y}.f&rLe
*/ 4j'rbbs/
private void insertSort(int[] data) { ^2rj);{V
int temp; K9&Q@3V
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); { GCp5
} VK*H1EH1
} V[WZ#u-p
} Vtj*O'0
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} M+ <SSi"
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归并排序: .e3@fq
pl,XS6mB
package org.rut.util.algorithm.support; j&S.k
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import org.rut.util.algorithm.SortUtil; Y~^R^J
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/** P;gd!Yl<-
* @author treeroot .7Qqs=Au
* @since 2006-2-2 pQ7elv]
* @version 1.0 A-myY30
*/ "X?Zw$gRud
public class MergeSort implements SortUtil.Sort{ v?3xWXX,
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/* (non-Javadoc) _[&.`jTFn
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G){+.X4g3
*/ /\Xe'&
public void sort(int[] data) { 17l?li
int[] temp=new int[data.length]; pg,JYn
mergeSort(data,temp,0,data.length-1); ;IPk+,hpmi
} ]QHZ[C
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private void mergeSort(int[] data,int[] temp,int l,int r){ Bo
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int mid=(l+r)/2; 6f#Mi+"
if(l==r) return ; 6_yatq5c
mergeSort(data,temp,l,mid); ~n0Exw(
mergeSort(data,temp,mid+1,r); C{l-l`:
for(int i=l;i<=r;i++){ Kt]vTn7!9
temp=data; Z{#3-O<a+n
} `]19}GK~xo
int i1=l; HtE^7i*_
int i2=mid+1; 438r]f?0|{
for(int cur=l;cur<=r;cur++){ oLlfqV,|L\
if(i1==mid+1) 6yYd~|T.Fl
data[cur]=temp[i2++]; n?q+:P
else if(i2>r) @*6_Rp"@
data[cur]=temp[i1++]; 8>vNa
else if(temp[i1] data[cur]=temp[i1++]; ]-X\n
else 5\JV }
data[cur]=temp[i2++]; c-.F{~
} kMEXg zl
} 3ErV" R4"$
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} i,Jz7OX
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改进后的归并排序: I-J%yutB
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package org.rut.util.algorithm.support; Ei<+{P(t0
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import org.rut.util.algorithm.SortUtil; qnd] UUA^
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/** U/v)6:j)4R
* @author treeroot %M^Q{`
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* @since 2006-2-2 fD_3lbiL(
* @version 1.0 ^pfM/LQ@
*/ 8"ZcK xDk
public class ImprovedMergeSort implements SortUtil.Sort { oz3!%'
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private static final int THRESHOLD = 10; 7:$dl#
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/* ~<Wa$~oY
* (non-Javadoc) +Ezl.O@z
* I(j{D>v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l.}gWN9-
*/ T{#=A$vu
public void sort(int[] data) { ?"}U?m=
int[] temp=new int[data.length]; 0,__{?!
mergeSort(data,temp,0,data.length-1); slr>6o%W`
} U&$I!80.
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private void mergeSort(int[] data, int[] temp, int l, int r) { = K`]cEL
int i, j, k; I;$tBgOWq
int mid = (l + r) / 2; DEfhR?v
if (l == r) R
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return; n|QA\,=
if ((mid - l) >= THRESHOLD) Cf<TDjU`|
mergeSort(data, temp, l, mid); xw1,Wbu]
else EW)r/Av:,
insertSort(data, l, mid - l + 1); cZWW[i
if ((r - mid) > THRESHOLD) 4l/~::y
mergeSort(data, temp, mid + 1, r); <X97W\
else +@@( C9
insertSort(data, mid + 1, r - mid); 5':j=KQE_
<P Vmr2Jp"
for (i = l; i <= mid; i++) { q}g0-Da
temp = data; VF7H0XR/k5
} >Mm.MNU
for (j = 1; j <= r - mid; j++) { zRau/1Y0
temp[r - j + 1] = data[j + mid]; %uP/v\l
} h{)`W
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int a = temp[l]; n2F*a
int b = temp[r]; AMK3I`=8WO
for (i = l, j = r, k = l; k <= r; k++) { N=8CVI
if (a < b) { to\$'2F"q
data[k] = temp[i++]; QX(t@VP
a = temp; k.Z?BNP
} else { f,-'eW/j
data[k] = temp[j--]; cZt5;"xgr]
b = temp[j]; D9r;Ys%
} 4tapQgj24
} q|
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} ^M1O)
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/** f+c{<fX
* @param data L#_QrR6Sny
* @param l W;,RU8\f
* @param i w;Pe_m7\EO
*/ `-rtU
private void insertSort(int[] data, int start, int len) { bXHtw}n
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); :{xu_"nYr
} .d4&s7n0
} ]b^bc2:
} `
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} z`8>$9
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堆排序: kf)s3I/`(
O=Vj*G,
package org.rut.util.algorithm.support; 23zR0z (L
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import org.rut.util.algorithm.SortUtil; fvDcE]_%H
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/** baf@"P9@\A
* @author treeroot @y# u!}
* @since 2006-2-2 _x7>d:C
* @version 1.0 _ 1\H{x
*/ qJj5_
public class HeapSort implements SortUtil.Sort{ g aXF3v*j
p*Hf<)}
/* (non-Javadoc) C2J@] &