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。 "@DCQ
插入排序: }Z"<KF
9w (QM-u
package org.rut.util.algorithm.support; Rax}r
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import org.rut.util.algorithm.SortUtil; ^<7)w2ns
/** o^2.&e+dQ
* @author treeroot %/jmQ6z^
* @since 2006-2-2 {^5r5GB=*
* @version 1.0 |{<g-)
*/ 1P@&xcvS\
public class InsertSort implements SortUtil.Sort{ J8~3LE
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/* (non-Javadoc) e%o6s+"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >DpnIWn
*/ rQ
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public void sort(int[] data) { pO4}6\1\
int temp; oe# :EfT
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8 }nA8 J
} }r9f}yX9Q
} fo^M`a!va0
} _z#zF[%
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} ySL 31%
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冒泡排序: 8it|yK.G@&
bw ' yX
package org.rut.util.algorithm.support; xLP yV&j-
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import org.rut.util.algorithm.SortUtil; O\-cLI<h2
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/** s+$l.aIO!
* @author treeroot %HpTQ
* @since 2006-2-2 fOF02WP^
* @version 1.0 ~W_m<#K(
*/ #92:h6
public class BubbleSort implements SortUtil.Sort{ 1ki##v[ W8
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/* (non-Javadoc) ]@)X3}"!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W:ih#YW_F
*/ %DbL|;z1
public void sort(int[] data) { y!h$Z6.
int temp; g< M\zD
for(int i=0;i for(int j=data.length-1;j>i;j--){ l!EfvqWX
if(data[j] SortUtil.swap(data,j,j-1); ,0[bzk
} ==l p\
} YR=<xn;m.
} cL7je
} p9y
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{|O8)bW'
} YO|Kc
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选择排序: rc<^6HqD
r\.1=c#"bP
package org.rut.util.algorithm.support; k^:$ETW2
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j]6Z*AxQ
import org.rut.util.algorithm.SortUtil; &Ru|L.G`
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/** P*BA
* @author treeroot r=~yUT
* @since 2006-2-2 x;?4A J{
* @version 1.0 D\jRF-z
*/ =hH>]$J[
public class SelectionSort implements SortUtil.Sort { kS%FV;9>(
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/*
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* (non-Javadoc) ={o>g'
* !vHnMY~AG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <=l!~~%
*/ }3!83~Qbx
public void sort(int[] data) { snK$? 9vh
int temp; *!ZU"q}i
for (int i = 0; i < data.length; i++) { k3da*vwE
int lowIndex = i; $pyM<:*L&<
for (int j = data.length - 1; j > i; j--) { <!v^Df
if (data[j] < data[lowIndex]) { /QZnN?k
lowIndex = j; 3?|Fn8dQR.
} T2P0(rEz
} !k)}p_e
SortUtil.swap(data,i,lowIndex); ;XMbjWc
} >JkQU e
} ;e_dk4_
vRpMZ)e
} vQ#$.*Cvn
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Shell排序: !h4S`2oZ/
q.yS j
package org.rut.util.algorithm.support; &cV$8*2b^
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import org.rut.util.algorithm.SortUtil; /V+N
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/** 7[rn
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* @author treeroot UeIu
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* @since 2006-2-2 >0k7#q}O
* @version 1.0 17I{_C
*/ ZSuUmCm
public class ShellSort implements SortUtil.Sort{ 8p,q9Ey
BNw^ _j1
/* (non-Javadoc) /J]Yj,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T;XEU%:LK
*/ @s}I_@
public void sort(int[] data) { 7L|w~l7R~
for(int i=data.length/2;i>2;i/=2){ pk%I98! Jy
for(int j=0;j insertSort(data,j,i); ,%w_E[2
} UTGR{>=>
} OkGg4X|9
insertSort(data,0,1); 7Vr .&`l
} G(~d1%(
j0B, \A
/** yv=LT~
* @param data DmEmv/N=
* @param j {mY<R`Ee
* @param i s-Q-1lKV,
*/ tSV}BM,
private void insertSort(int[] data, int start, int inc) { ,> A9OTSN\
int temp; TviC1 {2
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); @C62%fU {5
} $~`a,[e<
} =24)`Lyb
} I&l 1b>
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} *[*LtyCQt4
R/R[r> 1)6
快速排序: \[Op:^S
Vy.A`Hz
package org.rut.util.algorithm.support; gV1&b
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import org.rut.util.algorithm.SortUtil;
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/** zhY VMQ
* @author treeroot s\_-` [B0
* @since 2006-2-2 #F@53N
* @version 1.0 !f-mC,d
*/ 5\8Ig f>
public class QuickSort implements SortUtil.Sort{ m8,P-m
Y$uXBTR`y/
/* (non-Javadoc) oe_l:Y%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3P 3x^NI
*/ GzWmXm
public void sort(int[] data) {
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quickSort(data,0,data.length-1); LH@)((bi4v
} E#JDbV1AC
private void quickSort(int[] data,int i,int j){ jv>l6)
int pivotIndex=(i+j)/2; E@^`B9;Q7
file://swap yx"xbCc#
SortUtil.swap(data,pivotIndex,j); )28Jz6.I
osyY+)G'sV
int k=partition(data,i-1,j,data[j]); ,LKY?=T$z
SortUtil.swap(data,k,j); 7r 07N'
if((k-i)>1) quickSort(data,i,k-1); ?6+GE_VZ
if((j-k)>1) quickSort(data,k+1,j); 6[,*2a8
sJg-FVe2
} uy)iB'st&
/** 8fFURk
* @param data 9_V'P]@
* @param i /s.sW l
* @param j ?1?D[7$
* @return 9-[g/qrF
*/ XmXp0b7
private int partition(int[] data, int l, int r,int pivot) { ,u^i0uOg
do{ zD}dvI}
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); H>AQlO+ J
SortUtil.swap(data,l,r); CT+pkNC
} G`!#k!&r
while(l SortUtil.swap(data,l,r); jG)fM?
return l; mj=$[y(
} |UZPn>F~
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} s`GwRH<#
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改进后的快速排序: <^6|ZgR
%>`0hk88
package org.rut.util.algorithm.support; YQe9g>G&
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import org.rut.util.algorithm.SortUtil; jv<BGr=4;
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/** jjL(=n<J<"
* @author treeroot +Rn]6}5m\
* @since 2006-2-2 YbB8D-
* @version 1.0 s<Pk[7`*
*/ ~f0Bu:A)
public class ImprovedQuickSort implements SortUtil.Sort { 5BR9f3}
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private static int MAX_STACK_SIZE=4096; )D_#
private static int THRESHOLD=10; ,!_$A}@0
^
/* (non-Javadoc) {%X /w'|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RX}6H<5R
*/ VeeQmR?u-
public void sort(int[] data) { +168!Jw;
int[] stack=new int[MAX_STACK_SIZE];
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int top=-1; \M(0@#-$C
int pivot; Eh&*"&fHR
int pivotIndex,l,r; ~K]5`(KV
z[Xs=S!]I
stack[++top]=0; E9TWLB5A)(
stack[++top]=data.length-1; 6,*hzyy}Qu
| YmQO#''
while(top>0){ <x@brXA
int j=stack[top--]; )w_0lm'v{r
int i=stack[top--]; If>k~aL7I
C-'n4AY^
pivotIndex=(i+j)/2; ;4p_lw@
pivot=data[pivotIndex]; Bpt%\LK\~O
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SortUtil.swap(data,pivotIndex,j); h'YC!hjp
z}&w7O#
file://partition :5IbOpVM
l=i-1; PrqN5ND
r=j; 5D9I;L{
do{ '1{co/Y
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); aal5d_Y
SortUtil.swap(data,l,r); aF1i!Z
} Rl90uF]8
while(l SortUtil.swap(data,l,r); (4=NKtA^G
SortUtil.swap(data,l,j); 6=A
NwbB\Wl
if((l-i)>THRESHOLD){ k2DT+}u7G
stack[++top]=i; Lpd q^X
stack[++top]=l-1; 2<53y~Yi%
}
b$\3Y'":
if((j-l)>THRESHOLD){ XMo#LS
stack[++top]=l+1; N@Pf \D
stack[++top]=j; qE?*:$
} %_C!3kKv~
6&/n/g
} %K[_;8
file://new InsertSort().sort(data); I:M]#aFD
insertSort(data); :E'uV"j%
} N
GP}Z4
/** k)j,~JH
* @param data W@U<GF1
*/ w:%3]2c
private void insertSort(int[] data) { V("@z<b|
int temp; gFlUMfKh
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `Mx&,;x
} O2./?Ye
} A3D"b9<D
} <nDuN*|
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} uj#bK
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归并排序: l%XuYYQ
5Y77g[AX2-
package org.rut.util.algorithm.support; {`~uBz+dJq
W&>ONo6ki
import org.rut.util.algorithm.SortUtil; x9S~ns+r
GBnf]A,^@
/** nv>|,&;
* @author treeroot Zn{,j0;
* @since 2006-2-2 &`"Q*N2{
* @version 1.0 iV<4#aBg
*/ 1_$ybftS
public class MergeSort implements SortUtil.Sort{ _0^f
=_~bSEqyRI
/* (non-Javadoc) :uwB)G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '4 T}$a"i
*/ &Luq}^u
public void sort(int[] data) { \yDr
int[] temp=new int[data.length]; :f<:>"<
mergeSort(data,temp,0,data.length-1);
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} O#Y;s;)i"
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private void mergeSort(int[] data,int[] temp,int l,int r){ 17IT:T,'
int mid=(l+r)/2; esE5#Yq4.k
if(l==r) return ; 2}:{}pw
mergeSort(data,temp,l,mid); z+IHt(
mergeSort(data,temp,mid+1,r); w0W9N%f#=
for(int i=l;i<=r;i++){ pxC:VJ;
temp=data; 3i1e1Lj1
} ^yLiyR e\
int i1=l; Qb "\j
int i2=mid+1; G-FeDP
for(int cur=l;cur<=r;cur++){ o2p;$W4`
if(i1==mid+1) qz]b8rX
data[cur]=temp[i2++]; 2^Y@e=^A
else if(i2>r) ]M2<b:yo
data[cur]=temp[i1++]; 2e~ud9,
else if(temp[i1] data[cur]=temp[i1++]; {|dU|h
else -jN:~.
data[cur]=temp[i2++]; G.Z4h/1<
} Z*r;"WHB
} bEx8dc`Q
NlLgXn!
} Tgxxm
B#Sg:L9Tr'
改进后的归并排序: ;yd[QT<I<
S#gIfb<D
package org.rut.util.algorithm.support; !l2=J/LJj
qU!xh)
import org.rut.util.algorithm.SortUtil; }~/u%vI@M5
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V
/** MZ9{*y[z
* @author treeroot z +NxO!y
* @since 2006-2-2 oEfy{54
* @version 1.0 @|A
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*/ c;RB!`9"
public class ImprovedMergeSort implements SortUtil.Sort { &dA{ <.
[Ol}GvzJ7
private static final int THRESHOLD = 10; #fT1\1[]
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/* /eFudMl
* (non-Javadoc) 2RW^Nqc9
* Y<1]{4Wt
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ';T=kS<^_
*/ #p<1@,
public void sort(int[] data) { fg[]>:ZT.
int[] temp=new int[data.length]; SU.9;I
!
mergeSort(data,temp,0,data.length-1); `8 Q3=^)3
} 2VSs#z!
f9`F~6$
private void mergeSort(int[] data, int[] temp, int l, int r) { LojEJ
int i, j, k; \gtI4zl*J
int mid = (l + r) / 2; E]Wnl\Be
if (l == r) J})#43P
return; #
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if ((mid - l) >= THRESHOLD) pS [nKcyj
mergeSort(data, temp, l, mid); >LqW;/&S<
else :i{$p00
G
insertSort(data, l, mid - l + 1); xw1@&QwM
if ((r - mid) > THRESHOLD) cSMiNR
mergeSort(data, temp, mid + 1, r); ZH
o#2{F
else (<.uvq61
insertSort(data, mid + 1, r - mid); {u7%Z}<0
X{8/]'(
for (i = l; i <= mid; i++) { '3n?1x
temp = data; qRV5qN2{XY
} BbCt_z'
for (j = 1; j <= r - mid; j++) { 7*{9 2_M
temp[r - j + 1] = data[j + mid]; H2EKr#(
} ]J`yh$a
int a = temp[l]; 4JOw@/nE
int b = temp[r]; ZW+[f$X
for (i = l, j = r, k = l; k <= r; k++) { <4DSk9/
if (a < b) { g)o?nAr
data[k] = temp[i++]; ,B^NH7A:
a = temp; hU3z4|~+
} else { K@0gBgN
data[k] = temp[j--]; G"_ 8`l
b = temp[j]; G{4~{{tI
} F0&BEJBkU
} RA5*QW
} ;c>Co:W
PP+-D~r`}
/** u0&
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* @param data r$=YhI/=
* @param l J~\`8cds
* @param i fi/[(RBG
*/ Kz v*`
private void insertSort(int[] data, int start, int len) { sg=mkkD!g
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); =%wwepz6
} }Y{aVn&C
} Py}`k 1t*f
} lDBn3U&z>
}
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堆排序: ^+v6?%m
p-KMELB
package org.rut.util.algorithm.support; AdCi*="m
p_K``JE
import org.rut.util.algorithm.SortUtil; >_ )~"Ra
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/** $d@_R^]X
* @author treeroot GpW5)a
* @since 2006-2-2 o*d+W7l
* @version 1.0 vai.w-}Z
*/ Wix/Az
public class HeapSort implements SortUtil.Sort{ n$z}DE5 #
<%@S-+D`]
/* (non-Javadoc) S6J7^'h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +`@)87O
*/ jl!rCOLt4
public void sort(int[] data) { e-}b]\
MaxHeap h=new MaxHeap(); N*dO'ol
h.init(data); cqr4P`Oj
for(int i=0;i h.remove(); 9}\{0;9
System.arraycopy(h.queue,1,data,0,data.length); Hl@)j
} U?%1:-#F
K
>-)O=$s
private static class MaxHeap{ dc ]+1
A
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z
void init(int[] data){ d#?.G3YmK
this.queue=new int[data.length+1]; )$h<9e
for(int i=0;i queue[++size]=data; A;pVi;7
fixUp(size); b IS3
} h^u 9W7.
} m'
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@kq~q;F
private int size=0; ~ jR:oN
G^Z
SQ!
private int[] queue; ZTq"SQ>ym
c4T8eTKU
public int get() { E"E Bj7<s
return queue[1]; ddf#c,SQ
} ,mu=#}a@}
xz@/^Cj
public void remove() { ~@3X&E0S
SortUtil.swap(queue,1,size--); h{&X`$
fixDown(1); "`sr#
} %:^|Q;xe
file://fixdown >bKN$,Qen
private void fixDown(int k) { b~M3j&
int j; b
r"47i
while ((j = k << 1) <= size) { (c{<JYEC
if (j < size %26amp;%26amp; queue[j] j++; %E!^SF?Y
if (queue[k]>queue[j]) file://不用交换 tkN5|95
break; $LS$:%i4
SortUtil.swap(queue,j,k); 3#d5.Ut
k = j; INm21MS$
} Nb))_+/
} LI>tN R~
private void fixUp(int k) { ~S\Ee 2e>
while (k > 1) { *?k~n9n5U
int j = k >> 1; gC}r$ZB(
if (queue[j]>queue[k]) JN9
W:X.
break; YKjm_)8]w
SortUtil.swap(queue,j,k); uP'x{Pr)
k = j; \2F$FRWo
} 7?@s.Sz|fV
} ews4qP
Qx9lcO_
} XJ3 5Z+M
D6 2xC5
} 0?D`|x_
:{iS0qJ
SortUtil: t%<@k)hd~G
%fS__Tb#u
package org.rut.util.algorithm; /$'R!d5r
ebbC`eFD
import org.rut.util.algorithm.support.BubbleSort; c,$ >u,4
import org.rut.util.algorithm.support.HeapSort; {b|:q>Be8
import org.rut.util.algorithm.support.ImprovedMergeSort; MEOVw[hO
import org.rut.util.algorithm.support.ImprovedQuickSort; [")3c)OH|
import org.rut.util.algorithm.support.InsertSort; 63ig!-9F
import org.rut.util.algorithm.support.MergeSort; kIHfLwh9N
import org.rut.util.algorithm.support.QuickSort; .A: #l?
import org.rut.util.algorithm.support.SelectionSort; H_RVGAbU
import org.rut.util.algorithm.support.ShellSort; QEl:>HG
IF<?TYy=3B
/** %p5%Fs`sd
* @author treeroot %UquF
* @since 2006-2-2 Ig&=(Kmr
* @version 1.0 v&[Ff|>
*/ 9=(*#gRd
public class SortUtil { J|DID+M
public final static int INSERT = 1; 3y}0J @
public final static int BUBBLE = 2; #d+bld \
public final static int SELECTION = 3; "=7y6bM
public final static int SHELL = 4; xLfx/&2
public final static int QUICK = 5; k79"xyXX
public final static int IMPROVED_QUICK = 6; ogt<vng
public final static int MERGE = 7; R %QgOz3`
public final static int IMPROVED_MERGE = 8; P4{8pO]B
public final static int HEAP = 9; l]BIFZ~
]!yuD/4A
public static void sort(int[] data) { `"N56
sort(data, IMPROVED_QUICK); 3JB?G>\!
} D^(Nijl9U
private static String[] name={ W'Wr8~{h
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 5*.JXxE;U
}; JLS|G?#0
gr\UI!]F
private static Sort[] impl=new Sort[]{ .OLm{
new InsertSort(), kaSy 9Y{
new BubbleSort(), %3L4&W_T
new SelectionSort(), %P!6cyQS
new ShellSort(), C_SJ4Sh
new QuickSort(), KrcL*j&^
new ImprovedQuickSort(), +{Qk9Z
new MergeSort(), BDW%cs
new ImprovedMergeSort(), aCu 8
D!
new HeapSort() \2q!2XWgK
}; ^Ge3"^x1
-)biSU,
public static String toString(int algorithm){ 3$fzqFo
return name[algorithm-1]; 6#sd"JvtQ
} 9oOr-9t3
_*d8:|qw
public static void sort(int[] data, int algorithm) { o!q3+Pp;}
impl[algorithm-1].sort(data); D4e*Wwk
} U)Cv_qe
i%jti6z$Hr
public static interface Sort { hn:
public void sort(int[] data); -YF]k}|
} ,>6s~'
sEpY&6*
public static void swap(int[] data, int i, int j) { @"
-[@
int temp = data; Z`L-UQJ.
data = data[j]; UY@^KT]
data[j] = temp; 9ihB;m'C)
} H_*;7/&
} q*`1<9{H