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。 x0A7O
插入排序: }$&xTW_
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package org.rut.util.algorithm.support; %D`o
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import org.rut.util.algorithm.SortUtil; oZN'HT
/** 0}]SUe^
* @author treeroot E)W@{?.o#
* @since 2006-2-2 (u&`Ij9
* @version 1.0 G>w+#{(
*/ XN#&NT{t}
public class InsertSort implements SortUtil.Sort{ AOb]qc
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/* (non-Javadoc) t>xd]ti
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )&,{?$ .
*/ 8AL\ST51x"
public void sort(int[] data) { }Cj8
int temp; bcH_V|5}
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /[=E0_t+
} |quij0_'e
} ^A9M;q
} &;c>O
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} `s"d]/85VW
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冒泡排序: 'wQv3;
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package org.rut.util.algorithm.support; RLVATM5
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import org.rut.util.algorithm.SortUtil; ?X9UTOx
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/** $IX\O
* @author treeroot *if`/N-q(m
* @since 2006-2-2 {ci.V*:"
* @version 1.0 &7>zURv
*/ /7"I#U^u/
public class BubbleSort implements SortUtil.Sort{ -c*\o3)
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/* (non-Javadoc) O;uG?.\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G~,:2
o3
*/ "ju'UOcS/
public void sort(int[] data) { i|WQ0fD
int temp; j;0vAf
for(int i=0;i for(int j=data.length-1;j>i;j--){ bHE2,;o
if(data[j] SortUtil.swap(data,j,j-1); Cu;5RSr2Z
} K > g[k_
} Na{Y}0=^y
} neZ.`"LV
} ino:N5&;;
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} YJV% a
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选择排序: O+q/4
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package org.rut.util.algorithm.support; [iP#VM-N
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import org.rut.util.algorithm.SortUtil; OHv!
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/** WJH\~<{mP
* @author treeroot QS[L~97m2M
* @since 2006-2-2 942lSyix
* @version 1.0 ]}|byo
*/ hVUh0XeO
public class SelectionSort implements SortUtil.Sort { yw-8#y
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/* nI.x
* (non-Javadoc) Pz*_)N}j >
* "*1f;+\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \_V-A f{6
*/ "\C$
public void sort(int[] data) { @mP]*$00
int temp; *iBTI+"]
for (int i = 0; i < data.length; i++) { O/s$SX%g
int lowIndex = i; \wcam`f
for (int j = data.length - 1; j > i; j--) { H %JaZ?(
if (data[j] < data[lowIndex]) { {9Y+.46S
lowIndex = j; i<kD
} #'D"
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} Z;Ez"t&U
SortUtil.swap(data,i,lowIndex); ZYU=\
} '. Ed`?<p
} _.IxRk)T
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} McH>"`
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Shell排序: ~(!XY/0e
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package org.rut.util.algorithm.support; ]D[DU]K
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import org.rut.util.algorithm.SortUtil; zJP6F.Ov!
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/** dm0QcW4
* @author treeroot S5~VD?O,
* @since 2006-2-2 Ya>oCr}K
* @version 1.0 *.L81er5~
*/ d\x7Zw>
public class ShellSort implements SortUtil.Sort{ '!l1=cZD
Ox#\M0Wn$3
/* (non-Javadoc) JJ;[,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bM8If"
*/ 0/S_e)U
public void sort(int[] data) { hX`}Q4(k
for(int i=data.length/2;i>2;i/=2){ U2uF&6v
for(int j=0;j insertSort(data,j,i); >e\9Bf_
} DXz}YIEC
} >2bKSh
insertSort(data,0,1); ?5_7;Ha
} Y3Vlp/"rB"
6-?66gmT
/** 311LC cRp
* @param data $O9^SB
* @param j aW>6NDq(
* @param i N<QXmgqx
*/
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private void insertSort(int[] data, int start, int inc) { {?'fyEeg
int temp; TMYd47
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); | WvU q
} W 4F \}A
} z5)s/;Sc
} v\p;SwI
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} /yM:|`tT
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快速排序: `uC@nJ
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package org.rut.util.algorithm.support; ,"B+r6}EF
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import org.rut.util.algorithm.SortUtil; y@\V+
7)s^8+
/** &^W|iXi#
* @author treeroot (\SA*.)
* @since 2006-2-2 m9/}~Y#k
* @version 1.0 HuOIFv
*/ } \ZaE~
public class QuickSort implements SortUtil.Sort{ *4V=z#
hiQha5
/* (non-Javadoc) OoWyPdC+P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;<leKcvhQ&
*/ ?Wz8[u
public void sort(int[] data) { |+T1XYG5
quickSort(data,0,data.length-1); y- 1 pR
} 8QM(?A
private void quickSort(int[] data,int i,int j){ g1jTy7g?
int pivotIndex=(i+j)/2; U~pV) J
file://swap ~JaAii{
SortUtil.swap(data,pivotIndex,j); )b:7-}d
-{ H0g]
int k=partition(data,i-1,j,data[j]); 7AObC4 g
SortUtil.swap(data,k,j); M%@ !cW
if((k-i)>1) quickSort(data,i,k-1); #FNcF>3>
if((j-k)>1) quickSort(data,k+1,j); ]w.;4`l*
Y./2Ely
} d+'p@!W_
/** 1R,:
* @param data qTqwPWW*
* @param i gM
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* @param j ~-I+9F
* @return 7(5
4/
*/ }5hqDBK?
private int partition(int[] data, int l, int r,int pivot) { !P-^O
do{ .,OVzW
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); l?Ya"C`FL
SortUtil.swap(data,l,r); B#M5}QT|2
} 6b:tyQ
while(l SortUtil.swap(data,l,r); 7Zh~lM
return l; T3^GC X|!@
} k3uit+ge}
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} QDhOhGK
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改进后的快速排序: ' hs2RSq
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package org.rut.util.algorithm.support; "OdXY"G
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import org.rut.util.algorithm.SortUtil; R.yC(r
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/** 9_
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* @author treeroot 1 A\OC
* @since 2006-2-2 %;rHrDP(>
* @version 1.0 Gy6l<:;
*/ `-p:vq`
public class ImprovedQuickSort implements SortUtil.Sort { aL&n[
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private static int MAX_STACK_SIZE=4096; eb =D/
private static int THRESHOLD=10; +w+}b^4
/* (non-Javadoc) d&+h}O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4/wa+Y+=vt
*/ f>N!wgo[
public void sort(int[] data) { dfij|>:*0
int[] stack=new int[MAX_STACK_SIZE]; hBBUw0"
E/%9jDTQ
int top=-1; sk=-M8;\
int pivot; OR;uqV@
int pivotIndex,l,r; HlH64w2^R
s;6CExH
stack[++top]=0; }#n;C{z2e
stack[++top]=data.length-1; 6x%h6<#xh*
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while(top>0){ PEW=@xj2y
int j=stack[top--]; n\^Tq<] a
int i=stack[top--]; \Ol kM<
3 U7*>H
pivotIndex=(i+j)/2; ybY]e; v*O
pivot=data[pivotIndex]; 'coV^~qy
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SortUtil.swap(data,pivotIndex,j); ]3X@_NYj
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file://partition
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l=i-1; ]hFW73FV
r=j; U
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do{ 7G/1VeVjB
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); k\NMy#]Zt
SortUtil.swap(data,l,r); IX>d`O61*g
} ]zWon~
while(l SortUtil.swap(data,l,r); B>0].CK`
SortUtil.swap(data,l,j); '.81zpff
4*Hgv:0?kI
if((l-i)>THRESHOLD){ %nV]ibp2)
stack[++top]=i; =AEBeiz
stack[++top]=l-1; i;_t I#:A
} XYZ4TeW\1
if((j-l)>THRESHOLD){ paD !Z0v&
stack[++top]=l+1; z<##g
stack[++top]=j; 6er-{.L=
} -bSSP!f
WZ*ws[dVI
} }wHW7SJ
file://new InsertSort().sort(data); x6e}( &p*
insertSort(data); v33dxZ'
} vJ-q*qM1
/** &QGdLXOn
* @param data Y}#J4i0b*
*/ 98uV6b~g
private void insertSort(int[] data) { aD=A^ktx
int temp; 2-C!jAfd
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); D0%Ug>
} Zw ^kmSL"
} OslL~<
} 'i4_`^:+
2&^]k`Aj6D
} /Q2mMSK1h
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归并排序: "3)4vuX@;c
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package org.rut.util.algorithm.support; oBzfbg8p
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import org.rut.util.algorithm.SortUtil; d+Ek%_
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/** "6us#T
* @author treeroot %Ntcvp)
* @since 2006-2-2 P#XID 2;
* @version 1.0 9&_<f}ou
*/ Z`KC%!8K
public class MergeSort implements SortUtil.Sort{ <F`>,Pm
k|lcc^[0
/* (non-Javadoc) PEuIWXr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *22nVKi{
*/ pm_u
public void sort(int[] data) { @]-jl}:]
int[] temp=new int[data.length]; lJis~JLd`
mergeSort(data,temp,0,data.length-1); 79xx2
} Ft;^g3N
cxr=k%~}J
private void mergeSort(int[] data,int[] temp,int l,int r){ qCqFy#Ms\
int mid=(l+r)/2; -U/c\-~fU
if(l==r) return ; _;UE9S%
mergeSort(data,temp,l,mid); i* NH'o/
mergeSort(data,temp,mid+1,r); al9t^
for(int i=l;i<=r;i++){ HLZ;8/|48m
temp=data; Ko&>C_N
} W^]3XJP
int i1=l; $}jssnoU
int i2=mid+1; "huFA|`
for(int cur=l;cur<=r;cur++){ _J?
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if(i1==mid+1) Ou1JIxZ)|
data[cur]=temp[i2++]; [3--(#R\}?
else if(i2>r) R]btAu;Z
data[cur]=temp[i1++]; 3YFU*f,
else if(temp[i1] data[cur]=temp[i1++]; !qN||mCH
else eK!V
);
data[cur]=temp[i2++]; J_v$YwE
} }XSfst5-H
} ~;&m*2
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} x"{'&J[hx
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改进后的归并排序: x`dHJq`_g
+[tE ^`-F
package org.rut.util.algorithm.support; Y5FbU
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import org.rut.util.algorithm.SortUtil; :E@3Vl#U
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/** x\s|n{
* @author treeroot /i-J&*6_
* @since 2006-2-2 T|dY
2
* @version 1.0 `P8Vh+7u
*/ 6^"=dn6K
public class ImprovedMergeSort implements SortUtil.Sort { [5MJwRM^!;
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private static final int THRESHOLD = 10; )Ib<F7v
Z<SLc,]^
/* KB'qRnkc
* (non-Javadoc) EVVP]ND
* /`6ZAom9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Tp-l^?O-p
*/ Yl#Rib
public void sort(int[] data) { bV$)!]V
int[] temp=new int[data.length]; jlBanGs?
mergeSort(data,temp,0,data.length-1); ~YRDyQ:%T
} k25WucQ
8&3V#sn'
private void mergeSort(int[] data, int[] temp, int l, int r) { %_{tzXim
int i, j, k; ""1^k2fj
int mid = (l + r) / 2; bLQ ^fH4ww
if (l == r) ?F6pEt4
return; &b?LP]
if ((mid - l) >= THRESHOLD) 'eJ+JM<0%
mergeSort(data, temp, l, mid); PG_0\'X)/w
else Jnna$6G)B
insertSort(data, l, mid - l + 1); u9}1)9
if ((r - mid) > THRESHOLD) y7$iOR
mergeSort(data, temp, mid + 1, r); k7>|q"0C
else & M~`:R
insertSort(data, mid + 1, r - mid); HKqwE=NZ
YE= q:Bv
for (i = l; i <= mid; i++) { %ix)8+Eb
temp = data; }*ZHgf]~#
} 3v
mjCm
for (j = 1; j <= r - mid; j++) { Qum9A
temp[r - j + 1] = data[j + mid]; +H9 >A0JF
} q&Gz ]
int a = temp[l]; m5X3{[a:
int b = temp[r]; wy,Jw3
for (i = l, j = r, k = l; k <= r; k++) { f0/jwfL
if (a < b) { ?(fQ<i n
data[k] = temp[i++]; E}]I%fi
a = temp; p.@0=)
} else { X!,#'&p&
data[k] = temp[j--]; [B}1z
b = temp[j]; QpdujtH`
} _L?v6MTj
} Aqa6R+c
} J
ZVr&KZN
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.
/** &?KPu?9
* @param data cYZwWMzp
* @param l JVD@I{
* @param i JN{<oxI
*/ ybD{4&ZE
private void insertSort(int[] data, int start, int len) { v(qV\:s}m
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Py|H?
, 6=
} P3+)pOE-SI
} &Pmc"9Rl
} lAdOC5+JX
} T
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堆排序: u3Zzu \{
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package org.rut.util.algorithm.support; &/B2)l6a
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import org.rut.util.algorithm.SortUtil; &,W_#l{
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/** y+K7WUwhq
* @author treeroot qWRNHUd
* @since 2006-2-2 ^tm++
* @version 1.0 * 23m-
*/ [<#<:h&\
public class HeapSort implements SortUtil.Sort{ (t]lP/
Eg@R[ ^T
/* (non-Javadoc) qPFG+~\c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bxn8><
*/ Rz<d%C;R
public void sort(int[] data) { kWZ/ej
MaxHeap h=new MaxHeap(); ,^MW)Gf<
h.init(data); 6Nfof
for(int i=0;i h.remove(); $$2S*qY
System.arraycopy(h.queue,1,data,0,data.length); n:5O9,umZ
} &+E'1h10
2x<Qt2"
private static class MaxHeap{ l}2%?d
2a._?(k_y
void init(int[] data){ XEf&Yd
this.queue=new int[data.length+1]; aBqe+FXp4
for(int i=0;i queue[++size]=data; <|KKv5[
fixUp(size); mV:RmA
} H6%!v1 u
} <FUqD0sQ
j61BP8E
private int size=0; 1jUhG2y
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private int[] queue; ?z)y%`}
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public int get() { b2/N H1A
return queue[1]; Y^c,mK^
} [p( #WM:
YA^wUx
public void remove() { c:?#zX
SortUtil.swap(queue,1,size--); p0[,$$pM
fixDown(1); E&iWtwkz
} &J6o$i
file://fixdown F(KH-
private void fixDown(int k) { s%L"
c
int j; #FQm/Q<0
while ((j = k << 1) <= size) { <\}Y@g8
if (j < size %26amp;%26amp; queue[j] j++; e\d5SKY
if (queue[k]>queue[j]) file://不用交换 Z!*8JaMT
break; rx}ujjx
SortUtil.swap(queue,j,k); 5,0wj0l
k = j; d}wa[WRv
} yNLa3mW
} s_GK;;
private void fixUp(int k) { -_{C+Y_
while (k > 1) { A<YZBR_
int j = k >> 1; a!0?L0_W&
if (queue[j]>queue[k]) aV?}+Y{#
break; 8H3!; ]
SortUtil.swap(queue,j,k); s!j(nUd/
k = j; +]S;U&vQ
} shDt&_n
} ^7~SS2t!
8JtI&aH-L
} Wy^[4|6
l|ZzG4]+l
} ?(,5eg
#)PGQ)(
SortUtil: w}bEufU+2
DX%8.@
package org.rut.util.algorithm; d,oOn.n&
/ie3H,2
import org.rut.util.algorithm.support.BubbleSort; $Va]vC8?
import org.rut.util.algorithm.support.HeapSort; *nsnX/e(-
import org.rut.util.algorithm.support.ImprovedMergeSort; )HzITsFZKT
import org.rut.util.algorithm.support.ImprovedQuickSort; eX
l%Qs#Y
import org.rut.util.algorithm.support.InsertSort; 7u`}t83a
import org.rut.util.algorithm.support.MergeSort; ,
R.+-X
import org.rut.util.algorithm.support.QuickSort; ,I2reG
import org.rut.util.algorithm.support.SelectionSort; YW$x:
import org.rut.util.algorithm.support.ShellSort; soqNzdTB2
>Dp6@%
/** Za:BJ:
* @author treeroot 7ck0S+N'b
* @since 2006-2-2 zy/tQGTr@
* @version 1.0 ILr6W@o5A
*/ >e$^#\D
public class SortUtil { bZOy~F|
public final static int INSERT = 1; (y+5d00
public final static int BUBBLE = 2; [q>i
public final static int SELECTION = 3; MY<!\4/
public final static int SHELL = 4; 0p>:rU~
public final static int QUICK = 5; h$ETH1Ue
public final static int IMPROVED_QUICK = 6; HyX4ob[X
public final static int MERGE = 7; E]eqvT NH
public final static int IMPROVED_MERGE = 8; <C.$Db&9
public final static int HEAP = 9; dpGQ0EzH^
W'2-3J
public static void sort(int[] data) { N>6yacTB
sort(data, IMPROVED_QUICK); Znl>*e/|
} : {N3o:
private static String[] name={ ! ?U^+)^$
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" HH~
du
}; p4t!T=o/
d$pf[DJQo
private static Sort[] impl=new Sort[]{ 7E75s)KH
new InsertSort(), hPXVPLm7I
new BubbleSort(), p:Ld)U *
new SelectionSort(), $:gSc&mx
new ShellSort(), SSsQu^A
new QuickSort(), !q6V@&
new ImprovedQuickSort(), AGJ=de.
new MergeSort(), )Q
new ImprovedMergeSort(), Y %D*O
new HeapSort() qT>&
v_<
}; >RqT7n8h
x<