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。 p
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插入排序: ycAKK?O*
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package org.rut.util.algorithm.support; )92r{%N
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import org.rut.util.algorithm.SortUtil; 8K"+,s(%R
/**
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* @author treeroot o "z@&G" ^
* @since 2006-2-2 xV\5<7qk5g
* @version 1.0 $uDqqG(^
*/ TDt Amk
public class InsertSort implements SortUtil.Sort{ IMGP'g
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/* (non-Javadoc) v2+!1r7@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^tH#YlV4>9
*/ hk>;pU(
public void sort(int[] data) { I?Aj.{{$G%
int temp; )C%N]9FvY
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -&2B@]]
} sOU_j:A80;
} uz30_aH
} sEc;!L
%^]?5a!
} As&vFt P
#Q"O4 b:8
冒泡排序: w
ej[+y-
\ I`p|&vG
package org.rut.util.algorithm.support; 3)=c]@N0
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import org.rut.util.algorithm.SortUtil; [
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/** .TJEUK
* @author treeroot : 9t4s#.
* @since 2006-2-2 a->3`c
* @version 1.0 |JF@6
*/ e8=YGx^o`
public class BubbleSort implements SortUtil.Sort{ .;7> y7$*
-O!/Jv"{,[
/* (non-Javadoc) E#wS_[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gJ$K\[+
*/ "Z=5gj
public void sort(int[] data) { 6NWn(pZ]p
int temp; n(seNp%_
for(int i=0;i for(int j=data.length-1;j>i;j--){ c]-*P7W
if(data[j] SortUtil.swap(data,j,j-1); eYX5(`c[
} ufV!+$C)is
} m!tx(XsXU
} Z3TS,a1I4
} Ev"|FTI/
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} ``VW;l{
@%ip7Y]e
选择排序: RoGwK*j0+
+HT1 ct+dI
package org.rut.util.algorithm.support; -_C#wtC
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import org.rut.util.algorithm.SortUtil; !k3e\v|
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/** ?p<.Fv8.
* @author treeroot
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* @since 2006-2-2 s*/ bi
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* @version 1.0 q$(5Vd:
*/ bg,9@ }"F
public class SelectionSort implements SortUtil.Sort { Cqii}
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/* 6z0@I*
* (non-Javadoc) Fs_]RfG
* YKmsQ(q`N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %WTEv?I{Ga
*/ ev1 W6B-a
public void sort(int[] data) { 8mT M$#\
int temp; 1NQbl+w#I
for (int i = 0; i < data.length; i++) { 'y]\-T
int lowIndex = i; FTc.]laO
for (int j = data.length - 1; j > i; j--) { [u}(57DS
if (data[j] < data[lowIndex]) { 2%RNq<{Z_
lowIndex = j; WY^W.1X
} (;Y8pKl1e
} M-)RQ-h
SortUtil.swap(data,i,lowIndex); X$%4$
} c;0Vs,DUmG
} j>Iaq"
=OIw*L8C"I
} OU5*9_7.
,)PiP/3B
Shell排序: jHN
+5=l
-HSs^dP`
package org.rut.util.algorithm.support; 3pf[M{dG
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import org.rut.util.algorithm.SortUtil; oi}i\:
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/** 7dsefNPb
* @author treeroot wo_,Y0vfB
* @since 2006-2-2 fb8%~3i>
* @version 1.0 sGh(#A0Pt
*/ 2(5ebe[
public class ShellSort implements SortUtil.Sort{ qTZFPfyU
n
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/* (non-Javadoc) Hbv6_H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kKC9{^%)
*/ T91moRv
public void sort(int[] data) { niB`2J
for(int i=data.length/2;i>2;i/=2){ ARcB'z\r
for(int j=0;j insertSort(data,j,i); Zo1,1O
} ;XM{o:1Y[
} "&Po,AWa
insertSort(data,0,1); 2'=T[<nNB
} =X.LA%Sf=u
Z{&cuo.@<]
/** T~QJO0
* @param data }neY<{z
* @param j c'/l,k
* @param i |5Xq0nvCe
*/ U9b?i$
private void insertSort(int[] data, int start, int inc) { .bBdQpF-
int temp; |rm g#;/D
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); {( r6e
} cwiX8e"3
} 45hF`b>%,
} =zQN[
%p%%~ewmx
} Ft}@1w5
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快速排序: H"A7Zo
:
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package org.rut.util.algorithm.support; RKPO#qju\F
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import org.rut.util.algorithm.SortUtil; 6@DF
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/** A}eOFu`
* @author treeroot *_>Lmm.yh
* @since 2006-2-2 .^B*e6DAD
* @version 1.0 pz"0J_xDM
*/ lNSLs"x^
public class QuickSort implements SortUtil.Sort{ ,VO2a mI
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/* (non-Javadoc) L3CP`cx
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZP{*.]Qu
*/ '7O3/GDK
public void sort(int[] data) { Gea\,{E9xA
quickSort(data,0,data.length-1); 13taFVdU
} {<<U^<6}
private void quickSort(int[] data,int i,int j){ 6gc>X%d `K
int pivotIndex=(i+j)/2; ]+X@
7
file://swap s[UHe{^T
SortUtil.swap(data,pivotIndex,j); -GxaV #{
m *JaXa
int k=partition(data,i-1,j,data[j]); UFMA:o,
SortUtil.swap(data,k,j); UX7t`l2R
if((k-i)>1) quickSort(data,i,k-1); |1j["u1
if((j-k)>1) quickSort(data,k+1,j); 5oAK8I
| Bi!
} Y]&j,j&
/** 1I:+MBGin
* @param data Bz,?{o6s)Q
* @param i ](hE^\SC
* @param j KCs[/]
* @return 4EY)!?;
*/ !KUi\yQ1
private int partition(int[] data, int l, int r,int pivot) { #\=F O>
do{ eio4k-
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); B
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SortUtil.swap(data,l,r); rW$[DdFA5{
} s0vDHkf8
while(l SortUtil.swap(data,l,r); \-g)T}g,I
return l; .mR8q+I6
} <7~'; K
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`#
} dkz=CY3p%X
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改进后的快速排序: 79;<_(Y
%^jMj2
package org.rut.util.algorithm.support; @{25xTt
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import org.rut.util.algorithm.SortUtil; \kZ?
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/** OGl}-kw
* @author treeroot m;,N)<~
* @since 2006-2-2 mHRiugb!
* @version 1.0 PpzP 7
*/ 7<*yS310
public class ImprovedQuickSort implements SortUtil.Sort { :=Nz}mUV
~A\GT$
private static int MAX_STACK_SIZE=4096; 9iQq.$A .
private static int THRESHOLD=10; F%RRd/'
/* (non-Javadoc) |!4K!_y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1eF3`
*/ .6Pw|xu`Pw
public void sort(int[] data) { 5?x>9Ca
int[] stack=new int[MAX_STACK_SIZE]; wfH^<jY)E
r 8RoE`/T
int top=-1; Tc? $>'
int pivot; %$.3V#?
int pivotIndex,l,r; K|[*t~59
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stack[++top]=0; lNYt`xp
stack[++top]=data.length-1; @u6B;)'l
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while(top>0){ t7aefV&_,
int j=stack[top--]; ZpQ)IHA.
int i=stack[top--]; cPlZXf
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pivotIndex=(i+j)/2; s*. hl.k.
pivot=data[pivotIndex]; T{-CkHf9Q
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SortUtil.swap(data,pivotIndex,j); J cd-
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file://partition \| 8
l=i-1; Wi)_H$KII
r=j; 9dx/hFA
do{ )
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); <eWf<
SortUtil.swap(data,l,r); ZbdZrE$
} vbZ}Z3f_
while(l SortUtil.swap(data,l,r); b0Ps5G\ u
SortUtil.swap(data,l,j); (5-FV p
fb
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if((l-i)>THRESHOLD){ ]>5/PD,wWy
stack[++top]=i; s;ls qQk
stack[++top]=l-1; vg32y /l]S
} :74y!
if((j-l)>THRESHOLD){ u0`S5?
stack[++top]=l+1; T4Pgbop
stack[++top]=j; {8W'%\!=
} m;GCc8
)"7iJb<E
} AP 2_MV4W
file://new InsertSort().sort(data); Pd_U7&w,5
insertSort(data); 8}O lL,fP
} at,XB.}Z]
/** p8Qk'F=h
* @param data SE1=>S%p
*/ v dc\R?
private void insertSort(int[] data) { ek*rp`y]
int temp; x??+~$}\*-
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); | ATvS2
} B|C2lu
} c(xrP/yOwi
} Ng2twfSl$
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} 52Z2]T
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归并排序: h-`? {k&e
m[~y@7AK<
package org.rut.util.algorithm.support; *k.G5>@
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import org.rut.util.algorithm.SortUtil; K0|FY=#2y
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/** aC8} d
* @author treeroot C)ERUH2i
* @since 2006-2-2 YYBDRR"
* @version 1.0 (c=6yV@
*/ \ C+~m
public class MergeSort implements SortUtil.Sort{ dO!
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/* (non-Javadoc) *av<E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hj*pTuym
*/ %K=?@M9i
public void sort(int[] data) { <lPm1/8
int[] temp=new int[data.length]; \wz6~5R
mergeSort(data,temp,0,data.length-1); l<58A7
} he;dq)-e9
+V ;l6D
private void mergeSort(int[] data,int[] temp,int l,int r){ 61C7.EZZ;
int mid=(l+r)/2; Bu~]ey1
if(l==r) return ; P~ >OS5^
mergeSort(data,temp,l,mid); H)kwQRfu
mergeSort(data,temp,mid+1,r); #wwH m3
for(int i=l;i<=r;i++){ |6sp/38#p
temp=data; _)3|f<E_t)
} 823Y\x~>
int i1=l; Q4#m\KK;i9
int i2=mid+1; _{YWXRC#
for(int cur=l;cur<=r;cur++){ /K@XzwM
if(i1==mid+1) ;PF<y9M
data[cur]=temp[i2++]; K7_UP&`=J
else if(i2>r) 5y.WMNNv{
data[cur]=temp[i1++]; MzdV2.
else if(temp[i1] data[cur]=temp[i1++]; &
p
else /|6N*>l)y
data[cur]=temp[i2++]; /$Nsd
} V1N3iI
} }c,}V
24 ' J
} [.7d<oY
xX&+WR
改进后的归并排序: %HhnSi1K
[Gb.
JO}X
package org.rut.util.algorithm.support; \h/H#jZJ
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import org.rut.util.algorithm.SortUtil; y@S$^jk.
3) <yod=
/** A4x]Qh3OO
* @author treeroot *SJ_z(CZm
* @since 2006-2-2 {#vgtgBB
* @version 1.0 y&$A+peJ1
*/ gV's=cQ
public class ImprovedMergeSort implements SortUtil.Sort { KxJ!,F{>H
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private static final int THRESHOLD = 10; DN>[\hg
{BN#h[#B{
/* G5BfNU
* (non-Javadoc) S6DKREO
* Ko<:Z)PS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U)o-8OEZ9
*/ 2~)`N>@
public void sort(int[] data) { `KoV_2|
int[] temp=new int[data.length]; ~^:A{/
mergeSort(data,temp,0,data.length-1); T4Uev*A
} I{C
SH
w,.TTTad
private void mergeSort(int[] data, int[] temp, int l, int r) { e8a+2.!&\
int i, j, k; V+Y%v.F
int mid = (l + r) / 2; sUO`u qZV
if (l == r) Di6 ?[(8
return; S&wMrQ
if ((mid - l) >= THRESHOLD) WaRw05r
mergeSort(data, temp, l, mid); 03X1d-
else Jq-]7N%k/
insertSort(data, l, mid - l + 1); X'Xx"M
if ((r - mid) > THRESHOLD) (=AWOU+
mergeSort(data, temp, mid + 1, r); W:2( .?
else kiaw4_
insertSort(data, mid + 1, r - mid); Ty?cC**
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for (i = l; i <= mid; i++) { /{g>nzP
temp = data; kS);xA8s]
} .W%)*&WH\
for (j = 1; j <= r - mid; j++) { b{&)6M)zo
temp[r - j + 1] = data[j + mid]; Dcgo%F-W
} d7;um<%zn
int a = temp[l]; Se}c[|8
int b = temp[r]; zY{A'<\O
for (i = l, j = r, k = l; k <= r; k++) { jvL[
JI,b
if (a < b) { Ynj,pl
data[k] = temp[i++]; =&]g "a'
a = temp; rglXs
} else { gPI
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data[k] = temp[j--]; K($Npuu]
b = temp[j]; (y~TL*B
} mO7]9p
} 1.GQau~
} )Nw8O{\
YK'<NE3 4
/** Z@S3ZGe
* @param data .|70;
* @param l U%QI
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* @param i zwjgE6
*/ [}=B8#Jl-C
private void insertSort(int[] data, int start, int len) { e X|m
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); AQvudx)@"
} 6A-|[(NS
} /W<;Z;zk
} jV1.Yz(`
} hMO=#up&
wlqksG[B
堆排序: \ Gvm9M
cdT7
@
package org.rut.util.algorithm.support; .Yn_*L+4*
eq;uO6[
import org.rut.util.algorithm.SortUtil; }&J q}j
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/** FvjPdN/L?R
* @author treeroot dR,fXQm
* @since 2006-2-2 29.h91
* @version 1.0 (hbyEQhF
*/ O_7|C\]
public class HeapSort implements SortUtil.Sort{ VY4yS*y
_]H&,</
/* (non-Javadoc) yvB.&<]No
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z@!+v19^
*/ e*NnVys
public void sort(int[] data) { /nA{#HY
MaxHeap h=new MaxHeap(); YN F k
h.init(data); <PH#[dH
for(int i=0;i h.remove(); 5U$0F$BBp
System.arraycopy(h.queue,1,data,0,data.length); ]N?kG`[
} ^u ~Q/4
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private static class MaxHeap{ igPX#$0XU
W^l-Y%a/o
void init(int[] data){ oap4rHk}
this.queue=new int[data.length+1]; `d}2O%P
for(int i=0;i queue[++size]=data; S.NPZ39}ZE
fixUp(size); /*mI<[xb
} /h3RmUy
} h S&R(m
+cN8Y}V
private int size=0; X
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'h
1mG-}
private int[] queue; kt:!
7
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public int get() { @\#td5'
return queue[1]; tGa8W
} r;N|)
u'BaKWPS
public void remove() { (*iHf"=\
SortUtil.swap(queue,1,size--); 1=V-V<
fixDown(1); 3a'<*v<xw
} MQ6KN(?\ZL
file://fixdown MQ8J<A Pf-
private void fixDown(int k) { wnC81$1l~
int j; $xN|5;+
while ((j = k << 1) <= size) { fNFY$:4X
if (j < size %26amp;%26amp; queue[j] j++; }pkzH'$HJ
if (queue[k]>queue[j]) file://不用交换 C~/a-
break; J)-x!y>
SortUtil.swap(queue,j,k); Sdryol<
k = j; KbeC"mi
} %EB/b
} Ysv"
6b}
private void fixUp(int k) {
ew4U)2J+
while (k > 1) { N~'c_l
int j = k >> 1; >z@0.pN]7
if (queue[j]>queue[k]) Y}wyw8g/
break; sQZhXaMa $
SortUtil.swap(queue,j,k); Cw&KVw*
k = j; H qx-;F~0
} xJ.M;SF4
} utV_W&
IH+|}z4N?>
} UkFC~17P
x[e<} 8'$(
} nqUV
Zj'9rXhrM1
SortUtil:
Z *x'+X
'm$L Ij?@
package org.rut.util.algorithm; DN6Mo<H
#%O0[kd
import org.rut.util.algorithm.support.BubbleSort; l.M0`Cn-%
import org.rut.util.algorithm.support.HeapSort; U 6)#}
import org.rut.util.algorithm.support.ImprovedMergeSort; f3y=Wxk[
import org.rut.util.algorithm.support.ImprovedQuickSort; sRb9`u=)
import org.rut.util.algorithm.support.InsertSort; }Zp,+U*"
import org.rut.util.algorithm.support.MergeSort; |2A:eI8 ^
import org.rut.util.algorithm.support.QuickSort; dk^~;m#iN
import org.rut.util.algorithm.support.SelectionSort; KMax$
import org.rut.util.algorithm.support.ShellSort; fp"W[S|uL
4 #Jg9o
/** S,8elKH4
* @author treeroot p5*EA
x
* @since 2006-2-2 =Dj#gV
* @version 1.0 ^S; -fYW2
*/ 2GG2jky{/
public class SortUtil { TWX.D`W
public final static int INSERT = 1; =?8@#]G+
public final static int BUBBLE = 2; 2&cT~ZX&'
public final static int SELECTION = 3; m9;SrCN_
public final static int SHELL = 4; #GFr`o0$^
public final static int QUICK = 5; @2i9n
public final static int IMPROVED_QUICK = 6; <:CkgR$/{
public final static int MERGE = 7; ))Za&S*<
public final static int IMPROVED_MERGE = 8; r<$y=B
public final static int HEAP = 9; RxQ *
E"IZ6)Q
public static void sort(int[] data) { 1|:KQl2q
sort(data, IMPROVED_QUICK); ;hq\
} Q/Rqa5LI:
private static String[] name={ {n=|Db~S
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" :k#HW6p
}; #<xm.
^<6[.)
private static Sort[] impl=new Sort[]{ gRzxLf`K
new InsertSort(), VIbq:U
new BubbleSort(), E{vbO/|kf
new SelectionSort(), 3OB"#Ap8<
new ShellSort(), &7s.`
new QuickSort(), 4skD(au8
new ImprovedQuickSort(), yf,z$CR
new MergeSort(), ^B^9KEjTz
new ImprovedMergeSort(), }6ldjCT/,
new HeapSort() %
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}; vP,n(reM
7xR\kL.,
public static String toString(int algorithm){ _#8MkW#]~
return name[algorithm-1]; "J1
4C9u
} ^ZCD ~P_=
\b>]8Un"
public static void sort(int[] data, int algorithm) { ~VB1OLgv#.
impl[algorithm-1].sort(data); Dt1jW
} 4I[P>
$:^td/p J
public static interface Sort { ,#K'PB4 E
public void sort(int[] data); [D1Up
} 19] E 5'AI
ee=D1 qNu;
public static void swap(int[] data, int i, int j) { +w~oH =
int temp = data; @(lh%@hO
data = data[j]; l+b~KU7~l
data[j] = temp; |vC~HJpuv'
} E" vS $
} 2KZneS`