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。 !U+XIr
插入排序: 0SLn0vD!
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; i%_nH"h
/** B8G1
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* @author treeroot au1(.(
* @since 2006-2-2 bxg9T(Bj
* @version 1.0 Pd<>E*>}c.
*/ VJ(#FA2
public class InsertSort implements SortUtil.Sort{ #PRkqg+|
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/* (non-Javadoc) ~lLIq!!\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ygp NMq#?X
*/ Yf(QU`w_
public void sort(int[] data) { S-6%mYf
int temp; UYb:q
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); j kIgEF2d*
} o;@T6-VH
} D@>^_cTO24
} F\;G'dm
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} $McVK>=
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冒泡排序: ]T! >]
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package org.rut.util.algorithm.support; *G#W],~0
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import org.rut.util.algorithm.SortUtil; u>.qhtm[
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/** xV4
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* @author treeroot >{^&;$G+*
* @since 2006-2-2 Og`w ~!\
* @version 1.0 Q_F8u!qrZ
*/ +mN]VO*y
public class BubbleSort implements SortUtil.Sort{ =q(;g]e
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/* (non-Javadoc) 'lym^^MjL+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -q BrJ1*
*/ IgOo2N"^l
public void sort(int[] data) { !;^sIoRPV
int temp; ^{GnEqml&
for(int i=0;i for(int j=data.length-1;j>i;j--){ :.IVf Zw
if(data[j] SortUtil.swap(data,j,j-1); io$!z=W
} T^ ^o
} >?q()>l
} ]N^a/&}*
} LuB-9[^<
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} x-km)2x=W
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选择排序: >v9 ("
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package org.rut.util.algorithm.support; ^|?/
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import org.rut.util.algorithm.SortUtil; 1;R1Fj&
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/** %SL'X`j
* @author treeroot #N?EPV$
* @since 2006-2-2 @54D<Lj
* @version 1.0 GQOz\ic
*/ E4aCL#}D
public class SelectionSort implements SortUtil.Sort { e.%`
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/* n0:Y*Op
* (non-Javadoc) _6"!y
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* 8S[`(]
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mr]IxTv
*/ A"8`5qa
public void sort(int[] data) { <GI{`@5C
int temp; y{ReQn3>y
for (int i = 0; i < data.length; i++) { ,lLkAd?q
int lowIndex = i; 6C>"H
for (int j = data.length - 1; j > i; j--) { h[M~cZ{
if (data[j] < data[lowIndex]) { y-qbK0=X4
lowIndex = j; xwr<ib:
} y| *X
} ^fT|Wm<
SortUtil.swap(data,i,lowIndex); sBGYgBu!a
} I6d4<#Q@L
} M}E0Msq_o
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} Z&gM7Zo8
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Shell排序: _Gv[ D
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package org.rut.util.algorithm.support; ,"~#s(
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import org.rut.util.algorithm.SortUtil; kXGJZ$
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/** Ww&~ZZZ {
* @author treeroot `,XCD-R^
* @since 2006-2-2 n4Od4&r
* @version 1.0 4<b=;8
*/ .:?X<=!S&t
public class ShellSort implements SortUtil.Sort{ z DDvXz
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/* (non-Javadoc) / 4P+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q 65mR!)
*/ dHp(U
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public void sort(int[] data) { v0762w
for(int i=data.length/2;i>2;i/=2){ %$K2$dq5
for(int j=0;j insertSort(data,j,i); cNX,%
} GORu*[U8
} Y)*5M
insertSort(data,0,1); +X)n} jh
} FV>j
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/** X=O}k&
* @param data i[obQx S94
* @param j f>$Ld1
* @param i >05_#{up
*/ K:Mm?28s
private void insertSort(int[] data, int start, int inc) { 'BY{]{SL
int temp; |3\$\qa
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ?'F>DN
} sU>!sxW
} ;4DqtR"7Y
} 'Oyx
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} NPjh2 AJm
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快速排序: b"x[+&%i
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package org.rut.util.algorithm.support; CS[[TzC=5
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import org.rut.util.algorithm.SortUtil; ofeSGx
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/** v/% q*6@
* @author treeroot =Rnx!E
* @since 2006-2-2 "X/cG9Lw
* @version 1.0 W`zY\]
*/ (GnwK1f
public class QuickSort implements SortUtil.Sort{ 7 ky$9+~
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/* (non-Javadoc) W?W vT`
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~z''kH=e
*/ fneg[K
public void sort(int[] data) { qK
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quickSort(data,0,data.length-1); ~'/I[y4t
} z?~W]PWiZ
private void quickSort(int[] data,int i,int j){ oYWcX9R
int pivotIndex=(i+j)/2; H*U\P 2C!)
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SortUtil.swap(data,pivotIndex,j); Rg*zUfu5%o
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int k=partition(data,i-1,j,data[j]); ~;/\l=Xl
SortUtil.swap(data,k,j); U].u) g$
if((k-i)>1) quickSort(data,i,k-1); Ck,.4@\tK
if((j-k)>1) quickSort(data,k+1,j); R#Z1+&='
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} )r
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/** .ON+ (
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* @param data HLMEB0zh^
* @param i +~ro*{3
* @param j *!De(lhEc
* @return lu@#)
*/ md[FtcY\
private int partition(int[] data, int l, int r,int pivot) { qlUYu"`i
do{ uNLB3Rdy}
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); SM:SxhrGt
SortUtil.swap(data,l,r); x{io*sY-
} kmM4KP#&|
while(l SortUtil.swap(data,l,r); |Iy55~hK`
return l; %g(h%V9f
} ?V_Qa0k
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} ak50]KYo
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改进后的快速排序: #)%N+Odnr
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package org.rut.util.algorithm.support; qR <
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import org.rut.util.algorithm.SortUtil; vCwDE~
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/** -"5x? \.{m
* @author treeroot xM%E;
* @since 2006-2-2 |0w'+HaE~N
* @version 1.0 $P]%Px!x
*/ bxP>
public class ImprovedQuickSort implements SortUtil.Sort { uAyj##H
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private static int MAX_STACK_SIZE=4096; e#k9}n^+
private static int THRESHOLD=10; <W,k$|w
/* (non-Javadoc) -mZo`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >c7/E
*/ 49
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public void sort(int[] data) { L&ws[8-
int[] stack=new int[MAX_STACK_SIZE]; {mL/)\
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int top=-1; nvD"_.K rJ
int pivot; ~PvW+UMLk
int pivotIndex,l,r; GT%V,OJ
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stack[++top]=0; #`a-b<uz
stack[++top]=data.length-1; uGl0z79
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while(top>0){ Xkl^!,
int j=stack[top--]; ~1Tz[\H#R
int i=stack[top--]; 8<P $E!
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pivotIndex=(i+j)/2; mkBQX
pivot=data[pivotIndex]; D0i84I`Z%
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SortUtil.swap(data,pivotIndex,j); V@>?lv(\
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file://partition O%o#CBf0
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r=j; yN3Tk}{V
do{ *BXtE8
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); }C*o;'o5G
SortUtil.swap(data,l,r); ?%Y?z]L#
} g#[9O'H
while(l SortUtil.swap(data,l,r); -(cm
SortUtil.swap(data,l,j); %hrv~=
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if((l-i)>THRESHOLD){ TP{a*ke^5,
stack[++top]=i; puqLXDjA/
stack[++top]=l-1; sF+0v p
} K+v 250J$-
if((j-l)>THRESHOLD){ Z$zUy|s[
stack[++top]=l+1; d`~#uN {
stack[++top]=j; k 5 "3*
} TdKl`"Iy
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} +=k?Dp[
file://new InsertSort().sort(data); l42m81x"
insertSort(data); K,IOD
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} On'3K+(_
/** 2M&4]d
* @param data J`RNik*>
*/ H<1?<1^
private void insertSort(int[] data) { U~H'c
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int temp; NPoXz
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \^#1~Kx
} V)@MM2,
} Ap!UX=HBb
} @\"*Z&]8z0
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} ZH0f32K
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归并排序: eGTK^p
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package org.rut.util.algorithm.support; ]~K&mNo
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import org.rut.util.algorithm.SortUtil; Qy70/on9
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/** ,gOQIS56
* @author treeroot ~qqtFjlG^
* @since 2006-2-2 jSVO$AW~C
* @version 1.0 aDOH3Ri0K!
*/ (C3d<a\:
public class MergeSort implements SortUtil.Sort{ 4O`h%`M
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/* (non-Javadoc) >|'6J!Op
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8@A[`5
*/ 8 6+>|
public void sort(int[] data) {
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int[] temp=new int[data.length]; %om7h$D=`
mergeSort(data,temp,0,data.length-1); +[qkG.
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} E, v1F!
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private void mergeSort(int[] data,int[] temp,int l,int r){ V8sY7QK=
int mid=(l+r)/2; z<fEJN
if(l==r) return ; X,N@`
mergeSort(data,temp,l,mid); @i68%6H`?
mergeSort(data,temp,mid+1,r); 7_3O]e[8
for(int i=l;i<=r;i++){ QVH_B+
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temp=data; =B:poh[u
} :$tW9*\KY
int i1=l; G6,8Xwk
int i2=mid+1; i\Vpp8<B
for(int cur=l;cur<=r;cur++){ [>:gwl
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if(i1==mid+1) ^~aSrREo
data[cur]=temp[i2++]; KCT8Q!\
else if(i2>r) IYO,/ kbf
data[cur]=temp[i1++]; L%0lX$2&\
else if(temp[i1] data[cur]=temp[i1++]; kwL)&@
else O9_YVE/-]
data[cur]=temp[i2++]; .'a |St
} Za6oYM_z
} gQEV;hCO
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} >gZz`CH
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改进后的归并排序: zoJ;5a.3B
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package org.rut.util.algorithm.support; 6a?y$+pr
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import org.rut.util.algorithm.SortUtil; vxeT[/6i
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/** .vv*bx
* @author treeroot ;Kf|a}m -
* @since 2006-2-2 bIArAS9%
* @version 1.0 C6VoOT)\
*/ g5Dx9d{
public class ImprovedMergeSort implements SortUtil.Sort { $<cZ<g5)
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private static final int THRESHOLD = 10; o
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/* 32iI :u
* (non-Javadoc) r?!xL\C\
* swlWe}1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tFaE cP
*/ >bN~p
public void sort(int[] data) { [kOA+\v
int[] temp=new int[data.length]; f~FehN7
mergeSort(data,temp,0,data.length-1); RfBb{?PP)
} qDM[7q3.
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private void mergeSort(int[] data, int[] temp, int l, int r) { ;g:bn5G
int i, j, k; 4Aew
)
int mid = (l + r) / 2; i)L:VkN
if (l == r) U
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return; Pp_3 nyQ
if ((mid - l) >= THRESHOLD) r^t{Ii~
mergeSort(data, temp, l, mid); &fW=5'
else 9.zQ<