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。 iLR^ V!
插入排序: Hs>|-iDs(
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package org.rut.util.algorithm.support; DwBKqhu
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import org.rut.util.algorithm.SortUtil; iF!r}fUU6
/** x=jS=3$8
* @author treeroot ^`<
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* @since 2006-2-2 XaH%i~}3
* @version 1.0 %*Aq%,.={
*/ 8*[Q{:'.
public class InsertSort implements SortUtil.Sort{ l2[{T^
aH(B}wh{
/* (non-Javadoc) ~P5;k_&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aNxq_pRb
*/ tJgo%P1
public void sort(int[] data) { @Q#<-/
int temp; ,'>,N/JA
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); WiBO8N,%`
} pjaDtNb
} )cUFb:D*"
} >ngP\&\
{S2?
}
} !hS~\+E
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冒泡排序: u?-X07_
PY{])z3N
package org.rut.util.algorithm.support; /QT"5fxKJ
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import org.rut.util.algorithm.SortUtil; %g+*.8;"b
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/** 1 Ka,u20
* @author treeroot yL.Z{wd
* @since 2006-2-2 |bWvQdN
* @version 1.0 aW.[3M;?v
*/ O77bm,E
public class BubbleSort implements SortUtil.Sort{ -Uu65m~:{k
)e6)~3[^
/* (non-Javadoc) fH6mv0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t;2\(_A
*/ s+RSAyU
public void sort(int[] data) { M+ljg&fy
int temp; p%?m|(4f
for(int i=0;i for(int j=data.length-1;j>i;j--){ co-dq\P
if(data[j] SortUtil.swap(data,j,j-1); :i8B'|DN5
} ']cRSj.
} g[ dI%
} m.0:R
} ,rZp(moj
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} +`D,7"{Eu
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选择排序: G$T#ql
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; QW[
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/** t7].33%\
* @author treeroot .W/#$s|X\
* @since 2006-2-2 "z/)> ?Wn
* @version 1.0 $~s|%>@
*/ :
#om6}
public class SelectionSort implements SortUtil.Sort { 9S8>"w^R
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/* 7>sNjOt@M
* (non-Javadoc) 52H'aHO1
* b IZuZF>*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L2GUrf
*/ ln~;Osb
public void sort(int[] data) { M}cgVMW
int temp; 5:r*em
for (int i = 0; i < data.length; i++) { A\IQM^i
int lowIndex = i; F{;{o^Pv
for (int j = data.length - 1; j > i; j--) { X4z6#S58
if (data[j] < data[lowIndex]) { %n7Y5|Uh
lowIndex = j; 3LK]VuZE
} ^xZ o.P
} y8k*{1MuO
SortUtil.swap(data,i,lowIndex); rr;p;
} VGDds
} %hnv
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} 6Uik>e7?
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Shell排序: EqB3f_
G{C27k>wa
package org.rut.util.algorithm.support; J/ !Mt
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import org.rut.util.algorithm.SortUtil; 1B#Z<p
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/** d@u)'AY%/
* @author treeroot +dB/SC-^U
* @since 2006-2-2 =!pfgE
* @version 1.0 e_iXR#bZc
*/ yi-S^
public class ShellSort implements SortUtil.Sort{ =:~%$5[[
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/* (non-Javadoc) PRo;NE
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Uw:gJ9
*/ Aqp$JM
>
public void sort(int[] data) { FdZG%N>Z
for(int i=data.length/2;i>2;i/=2){ 9f+S-!
for(int j=0;j insertSort(data,j,i); Ta0Ln
} ;WG6|QgV?-
} 6.|Qyk*
insertSort(data,0,1); wy)I6`v
} -kZOve|5
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/** nm3/-Q},
* @param data Q
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* @param j n@"h^-
* @param i ?~g X7{>
*/ 'i5V6yB
private void insertSort(int[] data, int start, int inc) { #4Z]/D2G
int temp; kCoTz"Z-
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); N4z(2.
} K;fRDE){
} UCv9G/$
} XX@@tzN
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} `fA|])3T
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快速排序: iCK p"(kf
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package org.rut.util.algorithm.support; 9~FB^3Nz_
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import org.rut.util.algorithm.SortUtil; e,0y+~
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/** `z?6.+C
* @author treeroot x9&{@
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* @since 2006-2-2 :^Ouv1!e1
* @version 1.0 5*#!w1X
*/ E$w2SQ
public class QuickSort implements SortUtil.Sort{ [l9iWs'M
k&kx%skz
/* (non-Javadoc) uk\-"dS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kOycS
*/ 9sR?aW^$,/
public void sort(int[] data) { mV58&SZT
quickSort(data,0,data.length-1); 9)Jc'd|
} AzwG_XgM)
private void quickSort(int[] data,int i,int j){ ML|O2e
int pivotIndex=(i+j)/2; [kjm EMF9i
file://swap lN<,<'&^.
SortUtil.swap(data,pivotIndex,j); VXpbmg!{S
P%- @AmO^_
int k=partition(data,i-1,j,data[j]); )w.\xA~|
SortUtil.swap(data,k,j); k~<b~VcU
if((k-i)>1) quickSort(data,i,k-1); /M.@dW7
w
if((j-k)>1) quickSort(data,k+1,j); !oDX+hd,%>
{ 4(E
@
} f-!A4eKe
/** $d[ xSwang
* @param data %^r}$mfy:0
* @param i @H?_x/qBT
* @param j ?3v Oc/2@
* @return iHp@R-g
*/ ATdK)gG
private int partition(int[] data, int l, int r,int pivot) { lM<SoC;[
do{ 0d%p<c
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); tk"+PTGJT
SortUtil.swap(data,l,r); :=I@<@82W
} ]nEZQ+F
while(l SortUtil.swap(data,l,r); kDrqV{_
return l; n<. T6
} Ckelr
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} kCq]#e~wq
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改进后的快速排序: wGXnS"L!
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package org.rut.util.algorithm.support; e>:bV7h
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import org.rut.util.algorithm.SortUtil; ^YpA@`n
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/** w# t[sI"IT
* @author treeroot \;b)qB
* @since 2006-2-2 6"d^4L?
* @version 1.0 H|uvc vf
*/ ~sI$xX!
public class ImprovedQuickSort implements SortUtil.Sort { ]lKQwpX3
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private static int MAX_STACK_SIZE=4096; T2nbU6H
private static int THRESHOLD=10; 7H1 ii
/* (non-Javadoc) 5g{L
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;U
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*/ gD[Fkq$]
public void sort(int[] data) { E%f;Z7G
int[] stack=new int[MAX_STACK_SIZE]; rY
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; U)a)l'y
int top=-1; 1lxsj{>U
int pivot; tPT\uD#t
int pivotIndex,l,r; NbD"O8dL~E
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stack[++top]=0; "]j GCo>9
stack[++top]=data.length-1; =-ky%3:`@
y11/:|
while(top>0){ 9Yh0'
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int j=stack[top--]; cR0RJ$[d
int i=stack[top--]; S_z}h
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pivotIndex=(i+j)/2; m]bv2S+5 y
pivot=data[pivotIndex]; WhO;4-q)2
yAu-BObD
SortUtil.swap(data,pivotIndex,j); FyZa1%Tv@
k
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file://partition H$:Z`CQt<
l=i-1; VtR?/+8X
r=j; $GzTDq
Y9@
do{ KPGX/l
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); `Z3Qx~fx
SortUtil.swap(data,l,r); CvCk#:@HM
} Cmq.V@
while(l SortUtil.swap(data,l,r); YU89m7cc'
SortUtil.swap(data,l,j); {[~
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if((l-i)>THRESHOLD){ ^lqcF.
stack[++top]=i; }`oe<|
stack[++top]=l-1; [TZlvX(E
} Xwg|fr+p
if((j-l)>THRESHOLD){ FkdG@7Xf
stack[++top]=l+1; @quNVx(y
stack[++top]=j; _]"5]c&*3
} w1J&c' -
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} $B6"fYiDk
file://new InsertSort().sort(data); |(gq:O
insertSort(data); t'uZho~^F
} 05(lh<C
/** c2}?[\U]
* @param data E^.y$d~ dS
*/ G`9\v=0
private void insertSort(int[] data) { >IW0YIQy,
int temp; U _~lpu
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 73$^y)AvY
} 4:\s.Z{!3
} ^A8'YTl
} UTEUVcJ\
U!:Q|':=h
} ubV|s|J
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归并排序: (C#9/WO?
z6)SaSYE
package org.rut.util.algorithm.support; i|X ;n
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import org.rut.util.algorithm.SortUtil; `.f<RVk-
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/** #>-_z
* @author treeroot `A@{})+
* @since 2006-2-2 )%q]?@kB
* @version 1.0 FbB>
Md;
*/ 4h>Dpml
public class MergeSort implements SortUtil.Sort{ !>B|z=
,?GEL>F
/* (non-Javadoc) {g?$u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xrX^";}j
*/ )v1n#m,W
public void sort(int[] data) { nDnSVrvd-i
int[] temp=new int[data.length]; &?mH[rG"
mergeSort(data,temp,0,data.length-1); >Vr+\c
} zbdmz
#C1u~db
private void mergeSort(int[] data,int[] temp,int l,int r){ }EmNSs`$r
int mid=(l+r)/2; 6P=6E
if(l==r) return ; VLW<"7I 6\
mergeSort(data,temp,l,mid); 0c4H2RW
mergeSort(data,temp,mid+1,r); i]8HzKuiW
for(int i=l;i<=r;i++){ WL4{_X
temp=data; f&glY`s#
} `;-K/)/x
int i1=l; `}gjfu -'\
int i2=mid+1; vn@9Sqk
for(int cur=l;cur<=r;cur++){ cq`v8
if(i1==mid+1) B&&:A4
data[cur]=temp[i2++]; -QL_a8NL
else if(i2>r) {D1"bDZ
data[cur]=temp[i1++]; Ml1sE,BT
else if(temp[i1] data[cur]=temp[i1++]; `_C4L=q"
else 5v4
,YHD
data[cur]=temp[i2++]; 42aYM!
} 9L;fT5Tp7
} C- /<5D
j
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} Xc;W9e(U
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改进后的归并排序: K'.aQ&2
VfOm#Ue0q
package org.rut.util.algorithm.support; +^n [B
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import org.rut.util.algorithm.SortUtil; )(`I1"1
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/** iJE
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* @author treeroot VdpwZ
* @since 2006-2-2 M<oIo036
* @version 1.0 ~G.'pyW
*/ iE$qq~%
public class ImprovedMergeSort implements SortUtil.Sort { m.ev~Vv~
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private static final int THRESHOLD = 10; MPx%#'Q
s86Ij>VLf
/* 6('2.^8
* (non-Javadoc) uc]]zI6
* -ju&"L B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1e.V%!Xk
*/ m,KG}KX
public void sort(int[] data) { /1ZRjf^
int[] temp=new int[data.length]; cl
kL)7RQ
mergeSort(data,temp,0,data.length-1); Lu,72i0O ^
} Tg|0!0qD]F
9frLYJz"
private void mergeSort(int[] data, int[] temp, int l, int r) { !t/I
j ~o
int i, j, k; f
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int mid = (l + r) / 2; v<
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if (l == r) - Te+{
return; SoX\S|}%6[
if ((mid - l) >= THRESHOLD) lt\.
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mergeSort(data, temp, l, mid); F]kn4zr
else z97RNT|Y7U
insertSort(data, l, mid - l + 1); `R@1Sc<*|
if ((r - mid) > THRESHOLD) %fB]N
mergeSort(data, temp, mid + 1, r); Nv!If$d
else t]LOBy-Kv
insertSort(data, mid + 1, r - mid); !5lb+%7
"J|{'k`
for (i = l; i <= mid; i++) { (Tt\6-
temp = data; qyzmjV6J2
} ~R-P%l P
for (j = 1; j <= r - mid; j++) { j4h6p(w{
temp[r - j + 1] = data[j + mid]; o?zA'5q
} , TL8`
int a = temp[l]; BEWDTOY[
int b = temp[r]; Lky<L96
for (i = l, j = r, k = l; k <= r; k++) { C;]}Ht:~I
if (a < b) { $m{-I=
data[k] = temp[i++]; UXpF$=
a = temp; \
vf&Ldk
} else { m,YBk<Bx
data[k] = temp[j--]; _p0@1 s(U
b = temp[j]; SVKjhZK
} bzYj`t?
} LYY3*d
} l*eJa38
3%gn:.9N
/** DJ)Q,l*|N9
* @param data MvV\?Lzj
* @param l f@Oi$9CZn
* @param i FI|jsO 3
*/ cQM_kV??!
private void insertSort(int[] data, int start, int len) { E6+c{4 1B
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); wD+4#=/j
} L\;n[,.
} k# -u!G
} ndW]S 7
} _{$eOwB
r"HQ>Wn
堆排序: ZSWKVTi
pjG/`
package org.rut.util.algorithm.support; 'Lm\ r+$F
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import org.rut.util.algorithm.SortUtil; zsM3
[2E*
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/** ;W"=s79
* @author treeroot T$w`=7
* @since 2006-2-2 ))M!"*
* @version 1.0 \N3A2L)l
*/ \PU7,*2
public class HeapSort implements SortUtil.Sort{ Q`= ,&;T>
n:dnBwY
/* (non-Javadoc) :c03"jvYE
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (rTn6[*
*/ lqaOLZH
public void sort(int[] data) { ,u.G6"<
MaxHeap h=new MaxHeap(); vG X
L'k
h.init(data); M/?*?B
for(int i=0;i h.remove(); vca]yK<u
System.arraycopy(h.queue,1,data,0,data.length); ylTX
} r@WfZZ
]*/%5ZOI&
private static class MaxHeap{ sKu/VAh
x
+g.lLb*#
void init(int[] data){ *I)F5M
this.queue=new int[data.length+1]; eHX;*~e6)
for(int i=0;i queue[++size]=data; |FED<
fixUp(size); 4eD>DW
} QYB66g:
} T~D2rt\
UO~Xzx!e
private int size=0; /9QC$Z):<
/&>vhpZ}
private int[] queue; X0FTD':f
8%\0v?a5
public int get() { Q}zd!*
return queue[1]; ~7;AV(\%e
} [N=v=J9
8?l/x
public void remove() { yq6Gyoi<
SortUtil.swap(queue,1,size--); !_i;6UVG
fixDown(1); ja2BK\"1:
} [H4)p ,R
file://fixdown _GW, 9s^A
private void fixDown(int k) { 'lWgHmE
int j; #ULjK*)R
while ((j = k << 1) <= size) { qT153dNA&
if (j < size %26amp;%26amp; queue[j] j++; EX"o9'
if (queue[k]>queue[j]) file://不用交换 k`(Cwp{Oc
break; Kry^47"
SortUtil.swap(queue,j,k); L9}%tEP
k = j; IIh \d.o
} xq@_'
3X
} H*KZZTKd
private void fixUp(int k) { W ])Lc3X
while (k > 1) { JmBe1"hs
int j = k >> 1; ^.gBHZ
if (queue[j]>queue[k]) :iEIo7B
break; R!z32 <5k
SortUtil.swap(queue,j,k); `fM]3]x>
k = j; E7`Q=4@e
} \2#j1/d4
} xf|vz|J?y
jCK 0+,;
} 9er0Ww.d
Of gmJ(%
} x\K9|_!
5fDp"-
SortUtil: 'UFPQ
a<CJ#B2K
package org.rut.util.algorithm; NK!#K>AO
/6@$^paB
import org.rut.util.algorithm.support.BubbleSort; n4A#T#D!t3
import org.rut.util.algorithm.support.HeapSort; s`dwE*~
import org.rut.util.algorithm.support.ImprovedMergeSort; 9D`p2cO
import org.rut.util.algorithm.support.ImprovedQuickSort; YZ(tjIgQ
import org.rut.util.algorithm.support.InsertSort; ,t|qhJF
import org.rut.util.algorithm.support.MergeSort; Lk`,mjhk
import org.rut.util.algorithm.support.QuickSort; ~!7!Y~(+
import org.rut.util.algorithm.support.SelectionSort;
iF^
import org.rut.util.algorithm.support.ShellSort; 4?',E ddo
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/** Xaw&41K
* @author treeroot d`sIgll&n
* @since 2006-2-2 kE[Hq-J=N
* @version 1.0 AAc*\K
*/ XCyAt;neon
public class SortUtil {
%G>
public final static int INSERT = 1;
:zK\t5
public final static int BUBBLE = 2; LUKt!I0l
public final static int SELECTION = 3; L43]0k
public final static int SHELL = 4;
`)n/J+g
public final static int QUICK = 5; p%#=OtkC
public final static int IMPROVED_QUICK = 6; ZxoAf;U~
public final static int MERGE = 7; AYHefAF<w
public final static int IMPROVED_MERGE = 8; J`'wprSBb
public final static int HEAP = 9; h=o%\F4
p/ au.mc
public static void sort(int[] data) { Mh"vH0\Lj
sort(data, IMPROVED_QUICK); XtftG7r9S
} >k9W+mk
private static String[] name={ 5J2tR6u-(
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" fqm-?vy}
}; *5z"Xy3J
K06x7W
private static Sort[] impl=new Sort[]{ fl+dL#]
new InsertSort(), 9R3YUW}s
new BubbleSort(), %T,cR>lw
new SelectionSort(), tdOox87YK
new ShellSort(), COFCa&m9c
new QuickSort(), r 3FUddF'
new ImprovedQuickSort(), B#, TdP]/
new MergeSort(), EY}*}- 3
new ImprovedMergeSort(), Z@gEJ^"yA"
new HeapSort() (Y~gItej
}; |0$7{nQ
`7
3I}%?
public static String toString(int algorithm){ JrGY`6##p
return name[algorithm-1]; hOR1RB
} xY@<