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。 w<mqe0
插入排序: /xf.\Z7<
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package org.rut.util.algorithm.support; D{3fhPNU<b
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import org.rut.util.algorithm.SortUtil; lR[z<2w\
/** 6,zDBax
* @author treeroot ]wR6bEm7
* @since 2006-2-2 p`LL
* @version 1.0 ex:3ua$N
*/ th90O|;
public class InsertSort implements SortUtil.Sort{ y0y+%H-
qAbd xd[
/* (non-Javadoc) -rRz@Cr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +ruj
*/ iI}nW
public void sort(int[] data) { @M9_j{A
int temp; >!<V\
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0pCDEs
} .:SfMr;G
} >["Kd.ye
} "|\94
3} l;
} %D. @L
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冒泡排序: lvG3<ls0K$
. *Z#cq0
package org.rut.util.algorithm.support; ![j(o!6&
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import org.rut.util.algorithm.SortUtil; 0x6@{0
}:"R-s
/** *eMLbU7
* @author treeroot /T{mS7EpYc
* @since 2006-2-2 sbpu
qOL
* @version 1.0 ruWye1X;
*/ w
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public class BubbleSort implements SortUtil.Sort{ z^"?sd
$/os{tzjd
/* (non-Javadoc) k:W=5{[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m/cx|b3hqv
*/ l; */M.B
public void sort(int[] data) { B piEAwh
int temp; MR[N6E6Mg
for(int i=0;i for(int j=data.length-1;j>i;j--){ 3!1&DII4
if(data[j] SortUtil.swap(data,j,j-1); xvHOY:
} ;\1b{-' l
} 5,Qy/t}K
} p~ mN2x ]
} :0{AP_tvcC
0;'j!`l9
} ))$ CEh"X
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选择排序: *-+C<2"
j`Tm\!q
package org.rut.util.algorithm.support; #dL5x{gV=
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import org.rut.util.algorithm.SortUtil; |:{g?4Mi
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/** O#A8t<f|M
* @author treeroot "Fo
* @since 2006-2-2 6_x}.bkIx=
* @version 1.0 3{I=.mUUm
*/ ^"PfDTyA
public class SelectionSort implements SortUtil.Sort { :A,O(
T,A!5V>cX
/* 5R&x{jf$
* (non-Javadoc) |)~Ex 9%ev
* wbn^R'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7cy+Nz
*/ ;B,nzx(L
public void sort(int[] data) { 6oPUYn-
int temp; `4se7{'UK`
for (int i = 0; i < data.length; i++) { 8Ix-i
int lowIndex = i; $b&BH'*'~
for (int j = data.length - 1; j > i; j--) { `"i^'VL,
if (data[j] < data[lowIndex]) { EolE?g@l8
lowIndex = j; uv?8V@x2
} x;<oaT$X
} >cC Gx
SortUtil.swap(data,i,lowIndex); 721{Ga4~S
} AEi WL.*.
} i/l!Cr2
qQwJJjf
} y^5T/M
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Shell排序: 8ct+?-3g
eV@4VxaZ
package org.rut.util.algorithm.support; `M towXj
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import org.rut.util.algorithm.SortUtil; z0EjIYI[N
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/** r _{)?B
* @author treeroot WK/b=p|#o
* @since 2006-2-2 7*R{u*/e
* @version 1.0 v)wY
*/ &\CJg'D:m
public class ShellSort implements SortUtil.Sort{ TsoCW]h
z_5rAlnwT.
/* (non-Javadoc) WV5r$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]Om'naD
*/ ahK?]:&QO
public void sort(int[] data) { BYhmJC|
for(int i=data.length/2;i>2;i/=2){ -6.i\
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for(int j=0;j insertSort(data,j,i); N`
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} =*@MQ
} $%N;d>[U,
insertSort(data,0,1); 3sd{AkD^
} 9Ba%=
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/** [,.[gWA
* @param data (,d4"C
* @param j }Rf}NWU)|
* @param i ,I9][_
*/ }3
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private void insertSort(int[] data, int start, int inc) { w!=_
int temp; [u!p-
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 0R2S@4%Y
} NgmO0H
} pe`TH::p
} 2tg/S=t}
wdN>KS2!
} <-Kb@V3
bUY:XmA
快速排序: ^=4I|+P,6.
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package org.rut.util.algorithm.support; e
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import org.rut.util.algorithm.SortUtil; !;xf>API
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/** [RGC!}"mr
* @author treeroot e>ZbZy?
* @since 2006-2-2 E-5ij,bHv3
* @version 1.0 W07-JHV%
*/ AaCnTRG
public class QuickSort implements SortUtil.Sort{ 8gu'dG =
02]8|B(E90
/* (non-Javadoc) &sr:\Qn X/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PU]7c2.y
*/ bn<I#ZH2
public void sort(int[] data) { xr7-[)3Q$
quickSort(data,0,data.length-1); IL8'{<lM
} i"2J5LLv
private void quickSort(int[] data,int i,int j){ @M1yBN
int pivotIndex=(i+j)/2; JN;TGtB^p
file://swap :JTRRv
SortUtil.swap(data,pivotIndex,j); L~?,6
8S[<[CH
int k=partition(data,i-1,j,data[j]); /Gh
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SortUtil.swap(data,k,j); 9^b7jw
if((k-i)>1) quickSort(data,i,k-1); )n[`Z#
if((j-k)>1) quickSort(data,k+1,j); ;Wfv+]n9
l"~h1xk~
} vJ# rW8y
/** 5~ *'>y
* @param data wHo#%Y,Nmi
* @param i kG|>_5
* @param j nkr,
* @return C[J`x>-K
*/ b}EYNCw_7S
private int partition(int[] data, int l, int r,int pivot) { (|ct`KU0#
do{ lyOrM7Gs
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); y<'2BTf
SortUtil.swap(data,l,r);
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} $Nt]${0
while(l SortUtil.swap(data,l,r); #C=L^cSx(
return l; 2S7H_qo$
} FzsS~C$wH{
K_<lO,[S
} Bcd0
Hm8EYPrJ
改进后的快速排序: Gr"2G,,VI
wFoR,oXtL/
package org.rut.util.algorithm.support; U#FJ8CD&u
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import org.rut.util.algorithm.SortUtil; ~3* ZG
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/** rt\<nwc
* @author treeroot l+3%%TV@L
* @since 2006-2-2 &a2V-|G',
* @version 1.0 T^=Ee?e
*/ %;"B;~
public class ImprovedQuickSort implements SortUtil.Sort { b/D9P~cE
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private static int MAX_STACK_SIZE=4096; zYgK$u^H
private static int THRESHOLD=10; 4o)\DB?!
/* (non-Javadoc) ?G%, k
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E%J7jA4
*/ {ZBb.$}RC
public void sort(int[] data) { u=ds]XP@
int[] stack=new int[MAX_STACK_SIZE]; +~pc%3*
!!D:V`F/d
int top=-1; ytBxe]
int pivot; yrK--C8
int pivotIndex,l,r; tKqCy\-q
Ig?.*j ]
stack[++top]=0; NdED8 iRc
stack[++top]=data.length-1; s_Ge22BZ
1+PNy d
while(top>0){
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int j=stack[top--]; v,x%^gv 0
int i=stack[top--]; M@LaD 5
U~zN*2-
pivotIndex=(i+j)/2; iYfLo">
pivot=data[pivotIndex]; t73Z3M
y8(?:#ZC
SortUtil.swap(data,pivotIndex,j); 2M(PH]D
*IO;`k q,;
file://partition Iy1Xn S*
l=i-1; dW=D]
r=j; z&HN>7
do{ ^$s~qQQ}B
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); wGQ hr="
SortUtil.swap(data,l,r); ^>R| R1&
} |EEz>ci
while(l SortUtil.swap(data,l,r); H|Fqc=qp
SortUtil.swap(data,l,j); 0f#a_
Q j~W-^/ -
if((l-i)>THRESHOLD){ 3b[[2x_UU
stack[++top]=i; OaCj3d>
stack[++top]=l-1; ,tv9+n@x
} kKk |@
if((j-l)>THRESHOLD){ (LvOsr~
stack[++top]=l+1; @.]K6qC
stack[++top]=j; GHsdLe=t0#
} \S@=zII_
. eag84_
} g#<?OFl
file://new InsertSort().sort(data); SIBIh- L
insertSort(data); {4jSj0W
} E?5B>Jer#
/** xbH!:R;
* @param data r
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*/ Wes"t}[25
private void insertSort(int[] data) { q}24U3ow
int temp; snzH}$Ls
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -clg'Aa;.
} 3'@jRK
} +z?f,`.*
} Ty`=U>K|
LFM5W&?
} Kz2^f@5=F
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归并排序: ,7$uh):
^WYG?/{4
package org.rut.util.algorithm.support; ~ilBw:L-3
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import org.rut.util.algorithm.SortUtil; - OGy-"
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/** <y/AEY1
* @author treeroot #Lt+6sa]2@
* @since 2006-2-2 ?BZ`mrH^
* @version 1.0 D7'0o`|
*/ -r0\
public class MergeSort implements SortUtil.Sort{ ED_5V@
QF6JZQh<
/* (non-Javadoc) bH]!~[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gG> ^h1_o~
*/ weadY,-H8
public void sort(int[] data) { h/~BUg'
int[] temp=new int[data.length]; `5jB|r/
mergeSort(data,temp,0,data.length-1); MM$"6Jor
} X51$5%
/3%xQK>%
private void mergeSort(int[] data,int[] temp,int l,int r){ k"-#ox!
int mid=(l+r)/2; 6HQwL\r79
if(l==r) return ; k(Xv&Zn
mergeSort(data,temp,l,mid); A{"t0Ai='0
mergeSort(data,temp,mid+1,r); l+qtA~V&2
for(int i=l;i<=r;i++){ &Y2P! \\2
temp=data; X,CFY
} nECf2>Yp v
int i1=l; y{P9k8v!z
int i2=mid+1; dR{
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for(int cur=l;cur<=r;cur++){ .Sw'Bo!Ee
if(i1==mid+1) I"?&X4%e
data[cur]=temp[i2++]; l[{}ZKZ
else if(i2>r) 84cH|j`w
data[cur]=temp[i1++]; XmR5dLc8
else if(temp[i1] data[cur]=temp[i1++]; cYS+XBz
else k;X1x65uP
data[cur]=temp[i2++]; Lxrn#Z eM
} Xh!Pg)|E
} Lwk-
{627*6,
} 3o^M%
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改进后的归并排序: j)*nE./3
YJsi5
package org.rut.util.algorithm.support; `vBa.)u
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import org.rut.util.algorithm.SortUtil; (Ad!hyE(
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/** Okc*)crw
* @author treeroot Dw,f~D$+ic
* @since 2006-2-2 KHiJOeLc
* @version 1.0 DJUtuex
*/ ~Wv?p4
public class ImprovedMergeSort implements SortUtil.Sort { +06j+I
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private static final int THRESHOLD = 10; 5!*a,$S
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/* B[50{;X
* (non-Javadoc) nsk
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* E~^'w.1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !CKUkoX
*/ Df^S77&c!
public void sort(int[] data) { 3}Qh`+Yj]
int[] temp=new int[data.length]; Y1IlH8+0
mergeSort(data,temp,0,data.length-1); '"^JNb^I
} Xi.?9J`@
,pzCJ@5
private void mergeSort(int[] data, int[] temp, int l, int r) { TVA1FD
int i, j, k; Nig-D>OS
int mid = (l + r) / 2; g (k|"g`*
if (l == r) H=C;g)R
return; Y2n*T
KXI,
if ((mid - l) >= THRESHOLD) 566Qikw2
mergeSort(data, temp, l, mid); qzz'v
else Y{=@^4|]
insertSort(data, l, mid - l + 1); -f=hL7NW
if ((r - mid) > THRESHOLD) _!7o
mergeSort(data, temp, mid + 1, r); %3j5Q
else >^&+,*tsS4
insertSort(data, mid + 1, r - mid);
2X_ef
.&y1gh!=
for (i = l; i <= mid; i++) { E3!twR*Aw
temp = data; {W]jVh p
} #ZA
YP
for (j = 1; j <= r - mid; j++) { P>|2~YxjU
temp[r - j + 1] = data[j + mid]; v&n&i?
} }^muAr
int a = temp[l]; V_!i KEU
int b = temp[r]; 5oS\uX|
for (i = l, j = r, k = l; k <= r; k++) { tANG ]
if (a < b) { .+>}},
data[k] = temp[i++]; YVT^}7#
a = temp; -bwl~3ZTi
} else { &^.'g{\Y
data[k] = temp[j--]; bb{+
b = temp[j]; 0*)79Sz
} `c(@WK4
} DN+`Q{KS
} '&d4x c
#=rR[:M
/** cc[w%jlA#
* @param data }MNm>3
* @param l (]:G"W8f
* @param i @lwqkJ
*/ a|.u;
private void insertSort(int[] data, int start, int len) { Ero3A'f
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); x>^S..K}L%
} _bX)fnUu
} 7u zN/LAF
} x?3p3[y
} XL:7$
:|a[6Uwl\V
堆排序: <\5{R@A*6
y{&,YV&_h
package org.rut.util.algorithm.support; '&9b*u";x(
x-1[2K1"[
import org.rut.util.algorithm.SortUtil; `JRdOe
*4ID$BmO
/** KvQ9R!V
* @author treeroot _#+i;$cO-X
* @since 2006-2-2 y.zW>Mfl
* @version 1.0 9;PtYdJ8
*/ jzQgDed ]
public class HeapSort implements SortUtil.Sort{ O'k"6sBb
yxH[uJpb
/* (non-Javadoc)
KLX>QR@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >(3y(1;
*/ 8:f(PN
public void sort(int[] data) { w"~T5%p
MaxHeap h=new MaxHeap(); 9I,Trk@&
h.init(data); #u~8Txt
for(int i=0;i h.remove(); aa|xZ
System.arraycopy(h.queue,1,data,0,data.length); y=t
-/*K
} v"j7},P@
){v nmJJ%
private static class MaxHeap{ p|zW2L
^Kn}{m/3Y
void init(int[] data){ ^Oo%`(D?
this.queue=new int[data.length+1]; }u
:sh >2
for(int i=0;i queue[++size]=data; BwR)--75
fixUp(size); +7=3[K
} Z',pQ{rD
} 0VPa=AW
xu3qX"
private int size=0; WkT4&|POJ
:>|[ o&L
private int[] queue; SO|$X
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public int get() { 'h$1vT
return queue[1]; &Mol8=V)
} uKK+V6}!kj
|1#*`2j\=9
public void remove() { =m UtBD.;
SortUtil.swap(queue,1,size--);
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fixDown(1); T{Av[>M
} Z\n
nVM=
file://fixdown XOU
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private void fixDown(int k) { 0y*8;7-|r)
int j; @,$>H7o
while ((j = k << 1) <= size) { nBR4j?':i
if (j < size %26amp;%26amp; queue[j] j++; svN&~@l
if (queue[k]>queue[j]) file://不用交换 (<|,LagTuc
break; J%{>I
SortUtil.swap(queue,j,k); *&XOzaVU
k = j; MGK%F#PM
} arm26YA-,
} r3'0{Nn+
private void fixUp(int k) { cJMp`DQzc
while (k > 1) { U`z=!KI+g
int j = k >> 1; tmKHT
if (queue[j]>queue[k]) Ch>r.OfP
break; =XVw{\#9 b
SortUtil.swap(queue,j,k); a0~LZQ?
k = j; nH_M#
} m9 1Gc?c
} Ejmpg_kux
a5caryZ"z
} gamE^Ee
f\xmv|8
} TXdo,DPv7
42M_ %l_
SortUtil: 0Xb,ne
7
2)hfYLi
package org.rut.util.algorithm; xIA] 5@;a
[n4nnmM
import org.rut.util.algorithm.support.BubbleSort; 9:R3+,ZN
import org.rut.util.algorithm.support.HeapSort; b+1!qNuCW#
import org.rut.util.algorithm.support.ImprovedMergeSort; nr&bpA/
import org.rut.util.algorithm.support.ImprovedQuickSort; iYD5~pK8
import org.rut.util.algorithm.support.InsertSort; rU+3~|m
import org.rut.util.algorithm.support.MergeSort; xpX<iT>5u
import org.rut.util.algorithm.support.QuickSort; oz:"w
nX
import org.rut.util.algorithm.support.SelectionSort; 1oe,>\\
import org.rut.util.algorithm.support.ShellSort; +-C.E
/% g+|C
/** $GP66Ev
* @author treeroot ":0u%E?s
* @since 2006-2-2 rGQ2 ve
* @version 1.0 eR%\_;}7;
*/ 0<7sM#sI!
public class SortUtil {
&(oA/jFQ
public final static int INSERT = 1; 63'm
@oZ
public final static int BUBBLE = 2; ~UJ.A<>Fh
public final static int SELECTION = 3; @^T~W^+
public final static int SHELL = 4; O}>@G
public final static int QUICK = 5; R2v9gz;W
public final static int IMPROVED_QUICK = 6; A
0v=7
]
public final static int MERGE = 7; ]DKRug5
public final static int IMPROVED_MERGE = 8; EsGf+-}|!0
public final static int HEAP = 9; d(|q&b:
~Oa$rqu%m
public static void sort(int[] data) { Li]bU
sort(data, IMPROVED_QUICK); WG A1XQ{
} 0N^+d,Xt.
private static String[] name={ U$mDAi$
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 6#7hMQ0&;O
}; iLch3[p%
y_X jY
private static Sort[] impl=new Sort[]{ 4d\^
new InsertSort(), N"}>);r
new BubbleSort(), 'y\Je7
new SelectionSort(), <4+P37^~
new ShellSort(), 9v_s_QkL2
new QuickSort(), ;Ax-f04gG
new ImprovedQuickSort(), s>m2qSu
new MergeSort(), Z/%FQ
new ImprovedMergeSort(), )i}j\";>L
new HeapSort() A+="0{P
}; @Wc5r#
ss[`*89
public static String toString(int algorithm){ u Jqv@GFv
return name[algorithm-1]; g35!a<JW
} Xd=KBB[r?
AY{KxCrb^
public static void sort(int[] data, int algorithm) { K_;vqi^1^&
impl[algorithm-1].sort(data); UB.1xcI
}
jd](m:eG
}9+;-*m/
public static interface Sort { is4}s,]$6
public void sort(int[] data); sSh{.XuB+3
} gom!dB0J
3Do0?~n
public static void swap(int[] data, int i, int j) { ^FKiVKI:
int temp = data; Z#Mm4(KNh
data = data[j]; HEBeJ2w
data[j] = temp; eAf i!!Z<
} [3jJQ3O,
} =0pt-FQ