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。 HEqTlnxUu
插入排序: _v~c3y).
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package org.rut.util.algorithm.support; Y"Y%JJ.J
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import org.rut.util.algorithm.SortUtil; @VdkmqXz
/** NifD
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* @author treeroot N=Q<mj;,
* @since 2006-2-2 9f UD68Nob
* @version 1.0 b02V#m;Z
*/ UB%Zq1D|t
public class InsertSort implements SortUtil.Sort{ }XmrfegF
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/* (non-Javadoc) T@K=
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K1`Z}k_p.
*/ Ynn:,
public void sort(int[] data) { 12 {F
int temp; Uh6LU5
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); P
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} d|I_SI1
} !VLk|6mn
} :/rl \woA>
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冒泡排序: dO?zLc0f
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package org.rut.util.algorithm.support; z@bq*':~J
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import org.rut.util.algorithm.SortUtil; ;_$Q~X
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/** %}.4c8
* @author treeroot Iax-~{B3AY
* @since 2006-2-2 @`Fv}RY{
* @version 1.0 '=s{9lxn^
*/ ,W8EU
public class BubbleSort implements SortUtil.Sort{ %@L[=\
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/* (non-Javadoc) ar&j1""
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C~e&J&zh
*/ _#\e5bE=Z
public void sort(int[] data) { T]er_n
int temp; /Pbytu);ds
for(int i=0;i for(int j=data.length-1;j>i;j--){ ON(OYXj
if(data[j] SortUtil.swap(data,j,j-1); -FOn%7r#Y
} @euH[<
} %fbV\@jDCX
} s=S9y7i(R
} q?R^~r
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} `i!BXOOV{
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选择排序: [Sr^CYP(
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package org.rut.util.algorithm.support; V8w7U:K
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import org.rut.util.algorithm.SortUtil; nrBpq
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/** %>p[;>jW
* @author treeroot G_m $?0\
* @since 2006-2-2 ]!c59%f=
* @version 1.0 \T'.b93~B
*/ |~K 5]
public class SelectionSort implements SortUtil.Sort { N>TmaUk
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/* xNrPj8V<Y
* (non-Javadoc) /M :7
* jj,CBNo(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -/V,<@@T
*/ bUzo> fm_
public void sort(int[] data) { ,59G6o
int temp; tG7F!um(
for (int i = 0; i < data.length; i++) { `w6*(t:T
int lowIndex = i; (HEi;
for (int j = data.length - 1; j > i; j--) { cyMvjzzRN
if (data[j] < data[lowIndex]) { u1}/SlCp
lowIndex = j; m&PB5s\=
}
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} %K`th&331
SortUtil.swap(data,i,lowIndex); vw'xmzgA
} C6?({
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} +Rj8"p$K
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Shell排序: @~z4GTF9i
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package org.rut.util.algorithm.support; ?v
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import org.rut.util.algorithm.SortUtil; `<3%`4z/
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/** C3K":JB
* @author treeroot !V'~<&
* @since 2006-2-2 }ed{8"bj
* @version 1.0 } =p e;l
*/ G$^u2wz.
public class ShellSort implements SortUtil.Sort{ <(!~s><.
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/* (non-Javadoc) *@VS^JB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S.zY0
*/ @tX8M[.eA
public void sort(int[] data) { DL*&e|:q
for(int i=data.length/2;i>2;i/=2){ 3v91 yMx
for(int j=0;j insertSort(data,j,i); .rwa=IW
} >vR7l&"
} 34
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insertSort(data,0,1); MpVZL29)
} b$eN]L
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/** [Ot<8)Jm
* @param data &s(mbpV
* @param j h ^.jK2I
* @param i j5gL67B
*/ `Hx JE"/
private void insertSort(int[] data, int start, int inc) { _ea|E 8
int temp; x
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); U>i}C_7g
} /u&7!>,
} *`_2uBz
} nb\pBl
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} [ KDNKK
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快速排序: G@3Jw[t
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package org.rut.util.algorithm.support; n%ypxY0
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import org.rut.util.algorithm.SortUtil; + MtxS l
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/** 35H.ZXQp-
* @author treeroot aH&Efz^
* @since 2006-2-2 6zp]SPY
* @version 1.0 gF2,Jm@"6
*/ zEKVyZd*{
public class QuickSort implements SortUtil.Sort{ uC! dy
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/* (non-Javadoc) M1q_gHA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KJ 7-Vl>
*/ `)tIXMn
public void sort(int[] data) { o3X0c6uU
quickSort(data,0,data.length-1); NdmwQJ7e"
} uqM=/T^A
private void quickSort(int[] data,int i,int j){ O'{g{
int pivotIndex=(i+j)/2; J)EL<K$Z[
file://swap YmwXA e:
SortUtil.swap(data,pivotIndex,j); O|nLIfT
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int k=partition(data,i-1,j,data[j]); 3>6rO4,
SortUtil.swap(data,k,j); FOAXm4"
if((k-i)>1) quickSort(data,i,k-1); [7\x(W-:@>
if((j-k)>1) quickSort(data,k+1,j); Mt*V-`+\
vawS5b;
}
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/** -Rwx`=6tV
* @param data Ae;mU[MK/
* @param i vO)]~AiB
* @param j L%<DLe^P`l
* @return GvBmh .
*/ j6E|j>@u
private int partition(int[] data, int l, int r,int pivot) { ^x2@KMKXZ
do{ Ki>XLX,er=
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 25;(`Td5
SortUtil.swap(data,l,r); 2Z-QVwa*U
} 3*E]
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while(l SortUtil.swap(data,l,r); &W}6Xg(
return l; cEIs9;
} c5Hyja=
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} X.V4YmZ-;
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改进后的快速排序: B%WkM\\!^
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package org.rut.util.algorithm.support; ; Kh!OBZFo
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import org.rut.util.algorithm.SortUtil; ^vJy<
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/** zJ_y"bt
* @author treeroot SPp|/ [i7
* @since 2006-2-2 _h I81Lzq
* @version 1.0 LvMA('4
*/ pV`/6
}
public class ImprovedQuickSort implements SortUtil.Sort { k3T374t1b
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private static int MAX_STACK_SIZE=4096; !j&#R%D
private static int THRESHOLD=10; "TVmxE%(
/* (non-Javadoc) ~
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'A9Z ((
*/ >IipWTVo<
public void sort(int[] data) { 7M~/[f7Z{
int[] stack=new int[MAX_STACK_SIZE]; pM~-o?
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int top=-1; S4pEBbV^n
int pivot; ^mouWw)a_
int pivotIndex,l,r; TPYh<p#
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stack[++top]=0; "y60YYn-#J
stack[++top]=data.length-1; ^I{/j'b&
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while(top>0){ {$V2L4
int j=stack[top--]; JL[!8NyU
int i=stack[top--]; [{:
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pivotIndex=(i+j)/2; kJ?AAPC
pivot=data[pivotIndex]; <O.|pJus
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SortUtil.swap(data,pivotIndex,j); %a]Imsm
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file://partition (mioKO )?v
l=i-1; j@{ B 8
r=j; TiR00#b
do{ 0es\
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); j9X|c7|
SortUtil.swap(data,l,r); vnS8N
} tns4 e\
while(l SortUtil.swap(data,l,r); f@k.4aS
SortUtil.swap(data,l,j); $&&+2?cx0
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if((l-i)>THRESHOLD){ ?g:sAR'
stack[++top]=i; xUTTRJ(\
stack[++top]=l-1; cdN =HM~I
} -e>Z!0
if((j-l)>THRESHOLD){ dK4w$~j{k
stack[++top]=l+1;
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stack[++top]=j; \uO^wJ}
} =2YXh,i
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} x<7?
file://new InsertSort().sort(data); ;#^ o5ht
insertSort(data); r`pf%9k
} X]o"vx%C
/** '2UQN7@d
* @param data 06?d#{?M1o
*/ Mcq!QaO}&
private void insertSort(int[] data) { 0\,!
int temp; 4K 8 (H9(
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *U$%mZS]1
} fe8hgTP|
} "xnULQK
} li{!Jp5]1b
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} j6j4M,UI43
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归并排序: SE(c_ sX
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package org.rut.util.algorithm.support; h6}rOchj
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import org.rut.util.algorithm.SortUtil; xSDTO$U8%
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/** LB[?kpy
* @author treeroot `xZ,*G7(*
* @since 2006-2-2 |9p0"#4u
* @version 1.0 CSz+cS
*/ :F9Oj1lM%
public class MergeSort implements SortUtil.Sort{ bkz/V/ Y
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/* (non-Javadoc) X<5&R{oZ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jeB"j
*/ qJ .XI
public void sort(int[] data) { nB0KDt_
int[] temp=new int[data.length]; Yh Ow0 x
mergeSort(data,temp,0,data.length-1); JcMl*k
} H7k@Br
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private void mergeSort(int[] data,int[] temp,int l,int r){ \}X[0ct2!
int mid=(l+r)/2; RS@[ +! :t
if(l==r) return ; g)!q4
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mergeSort(data,temp,l,mid); 2dK:VC4U
mergeSort(data,temp,mid+1,r); a8gOb6qF/H
for(int i=l;i<=r;i++){ ;/kmV~KG
temp=data; H}q$6WE
} <;uM/vSi
int i1=l; ?b"'w
int i2=mid+1; A-J#$B
for(int cur=l;cur<=r;cur++){ OJh MM-
if(i1==mid+1) )."dqq^ q
data[cur]=temp[i2++]; ~)zxIO!
else if(i2>r) r8!pk~R5]
data[cur]=temp[i1++]; hc|#JS2H@y
else if(temp[i1] data[cur]=temp[i1++]; _g-0"a{-
else WQ9Q:F2
data[cur]=temp[i2++]; gVy`||z
} sZ7~AJ
} owI:Qs_/4
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} z@ `u$D$n
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改进后的归并排序: [_}8Vv&6
Rf2mBjJ(z
package org.rut.util.algorithm.support; /a9CqK
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import org.rut.util.algorithm.SortUtil; %|1s9?h7\
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/** M%RH4%NZ0
* @author treeroot &pR 8sySu
* @since 2006-2-2 TAqX
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* @version 1.0 l ?YO!$
*/ >YsM'.EF D
public class ImprovedMergeSort implements SortUtil.Sort { 7\ZSXQy1W
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private static final int THRESHOLD = 10; `M(st%@n
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/* h%NM%;"H/
* (non-Javadoc) "@|rU4Y
* t;-F]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X[f)0w%
*/ mahNQ5 W*)
public void sort(int[] data) { =+I-9=
int[] temp=new int[data.length]; <M}O&?N
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mergeSort(data,temp,0,data.length-1); g/\cN(X
} !H<%X~|,
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private void mergeSort(int[] data, int[] temp, int l, int r) { -yTIv*y
int i, j, k; ,oPxt
int mid = (l + r) / 2; ledr[)
if (l == r) |`s:&<W+kp
return; N R4\TU
if ((mid - l) >= THRESHOLD) Aon.Y Z
mergeSort(data, temp, l, mid); CS5[E-%}T=
else -WR<tkK
insertSort(data, l, mid - l + 1); _OS,zZ0
if ((r - mid) > THRESHOLD) [7g-M/jvY
mergeSort(data, temp, mid + 1, r); FC||6vJth
else N9y+Psh
insertSort(data, mid + 1, r - mid); zSu,S4m_;
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for (i = l; i <= mid; i++) { TJ_6:;4,|_
temp = data; Zb|a\z8 ?
} Mn<s9ITS-
for (j = 1; j <= r - mid; j++) { @`8a3sL)
temp[r - j + 1] = data[j + mid]; ?Zk;NL9
} @*- 6DG-f
int a = temp[l]; Li$2 Gpc/
int b = temp[r]; 0&b;!N!vJ
for (i = l, j = r, k = l; k <= r; k++) { N8x.D-=gG
if (a < b) { 25j\p{*
data[k] = temp[i++]; lC,~_Yb
a = temp; !IB}&m
} else { +Z86Qz_
data[k] = temp[j--]; b`,Sd.2=('
b = temp[j]; '
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} t7sEY
} [Fv,`*/sm
} 8.7q
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/** z|Yt|W
* @param data Df:/r%
* @param l i1A<0W|
* @param i v-^tj}jA
*/ |.&GmP
private void insertSort(int[] data, int start, int len) { rKd|s7l
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); zjSl;ru
} (/!@
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} ~C>Q+tR8
} _-^mxC|M
} [TFp2B~)#
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堆排序: -T-yt2h(
m/(/!MVy
package org.rut.util.algorithm.support; 7Cbr'!E\_V
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import org.rut.util.algorithm.SortUtil; $J,$_O6
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