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。 "DlCvjc
插入排序: 7t04!dD}
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package org.rut.util.algorithm.support; u4<r$[]V
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import org.rut.util.algorithm.SortUtil; ,\IqKRcYU
/** Oq[E\8Wn
* @author treeroot L|q<Bpz
* @since 2006-2-2 #h3+T*5} 6
* @version 1.0 4{vd6T}V!
*/ \PLV]%3,
public class InsertSort implements SortUtil.Sort{ ?J~JQe42
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/* (non-Javadoc) bf74 "
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :T\WYKX3C
*/ Nu_w@T\l
public void sort(int[] data) { GwW#Ww;Oc
int temp; kQ#eWk J,
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *c AoE l
} `>sqP aD
} DYWC]*
} 4iLU "~
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} R&4E7wrdP
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冒泡排序: 6gKOpa
m_(hCY=Q$
package org.rut.util.algorithm.support; i52R,hz
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import org.rut.util.algorithm.SortUtil; s^oNQ}
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/** @qC:% |>
* @author treeroot |?|
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* @since 2006-2-2 s{k\1P(G}
* @version 1.0 20moX7L
*/ z;/'OJ[.
public class BubbleSort implements SortUtil.Sort{ *SY4lqN
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/* (non-Javadoc) mN eW|3a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x>J3tp$2
*/ WvJ?e
public void sort(int[] data) { e6R"W9
int temp; pMB=iS<E
for(int i=0;i for(int j=data.length-1;j>i;j--){ 7P`1)juA9
if(data[j] SortUtil.swap(data,j,j-1); =N{e iJ.(p
} &tgvE6/V
} 2:N_c\Vi
} 6g"<i}_|
} qE{cCS
jkP70Is
} KNg5Ptk
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选择排序: 1ZL_;k
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package org.rut.util.algorithm.support; GiZ'IDV
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import org.rut.util.algorithm.SortUtil; Q*C4
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/** .cF$f4>2
* @author treeroot 2`I;f/Sd
* @since 2006-2-2 1!`768
* @version 1.0 /a(zLHyz)
*/ e\_6/j7'
public class SelectionSort implements SortUtil.Sort { '&QT}B
be/1-=m
/* n`}&,UA$4
* (non-Javadoc) 3rY /6{
* Mak9qaWqF>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >>bYg
*/ _cw^5
public void sort(int[] data) { kV rT?
int temp; +2}(]J=-
for (int i = 0; i < data.length; i++) { ,&?q}M
int lowIndex = i; | q16%6q
for (int j = data.length - 1; j > i; j--) { \z`d}\3(R
if (data[j] < data[lowIndex]) { b(q&}60
lowIndex = j; mG~y8nUtp
} qE72(#:R*
} -HsBV>C
SortUtil.swap(data,i,lowIndex); DP_Pqn8p&M
} iFCH$!
} I|IlFu?O=
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} |<|,RI?
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Shell排序: <u?hdwW\
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package org.rut.util.algorithm.support; Gr@{p"./z
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import org.rut.util.algorithm.SortUtil; )Zf}V0!?+
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/** _Af4ct;ng
* @author treeroot :3>yr5a7-
* @since 2006-2-2 L[G\+
* @version 1.0 j& o+KV
*/ tN3 {7'\7
public class ShellSort implements SortUtil.Sort{ wmr%h q
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/* (non-Javadoc) aF{i
A\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ')<FLCFwT
*/ lq8ko@
public void sort(int[] data) { :J`!'{r
for(int i=data.length/2;i>2;i/=2){ C)96/k
for(int j=0;j insertSort(data,j,i); i>Bi&azx
} 6&QTVdK'O
} _
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insertSort(data,0,1); 0bxvM
} ,okJ eZ
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/** z#J/*712
* @param data WQLL[{mhS
* @param j TJ[jZuT:
* @param i gZEA;N:H%<
*/ DVoV:pk
private void insertSort(int[] data, int start, int inc) { q&$0i
int temp; 3d'ikkXK
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); y [9}[NMZ
} y]YS2^
} wt.{Fqm
} M}oj!xGB
. 02(O
} =@KY A(D
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快速排序: ?3TK7]1V:
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package org.rut.util.algorithm.support; KO]?>>5S6
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import org.rut.util.algorithm.SortUtil; 7k t7^V<
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/** ,o>pmaoLs
* @author treeroot eN<pU%7
* @since 2006-2-2 \m~\,em
* @version 1.0 jbhJ;c :
*/ x\bR j>%(
public class QuickSort implements SortUtil.Sort{ W8yfa[z~J
_IKP{WNB
/* (non-Javadoc) @j\?h$A/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D@(M+u9/%
*/ ul=a\;3x#|
public void sort(int[] data) { ?J@?,rZQ^V
quickSort(data,0,data.length-1); d! QD vO
} 9 QCpXy
private void quickSort(int[] data,int i,int j){ zj$_iB`9
int pivotIndex=(i+j)/2;
=Sb:<q+Q
file://swap gjegzKU
SortUtil.swap(data,pivotIndex,j); Y\g90
WQLHjGehe
int k=partition(data,i-1,j,data[j]); }M9DqZ;I
SortUtil.swap(data,k,j); Nzi/3r7m
if((k-i)>1) quickSort(data,i,k-1); i3 l #~
if((j-k)>1) quickSort(data,k+1,j); [mB(GL
@Wx`l) b
} [rUh;_b\D
/** k|$"TFXx;
* @param data }u3H4S<o
* @param i L >Ez-
* @param j spU!t-n67
* @return J'\eS./w|
*/ W#Hv~1
private int partition(int[] data, int l, int r,int pivot) { vBnKu
do{ $XQ;~i
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); q:-]d0B+
SortUtil.swap(data,l,r); lq\'
} 'e<HP Ni)
while(l SortUtil.swap(data,l,r); [zh4W*K_cq
return l; .i3lG(
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} n<%=~1iY+
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} "x.6W!
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改进后的快速排序: K?FX<PT
[aWDD[#j~
package org.rut.util.algorithm.support; 5&-j{J0iV
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import org.rut.util.algorithm.SortUtil; ){Ciu[h
p'Y&Z?8
/** '?`@7Eol
* @author treeroot u1pc5 Y{
* @since 2006-2-2 E*r
* @version 1.0 @tE&<[e
*/ Rg8m4x w
public class ImprovedQuickSort implements SortUtil.Sort { s}[A4`EWH
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private static int MAX_STACK_SIZE=4096; C)J_lI{^
private static int THRESHOLD=10; s0\f9D
/* (non-Javadoc) qlz9&w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;e~{TkD
*/ Msv*}^>
public void sort(int[] data) { /jZaU`
int[] stack=new int[MAX_STACK_SIZE]; 1Es*=zg
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int top=-1; C>Omng1>^
int pivot; ^&`sWO@=
int pivotIndex,l,r; Mz/]D J8
[V> :`?
stack[++top]=0; )p/=u@8_f
stack[++top]=data.length-1; aDN6MZM
B@"SOX
while(top>0){ k W<Yda<a
int j=stack[top--]; pB g|n=^
int i=stack[top--]; 6Q.{llO
wO2V%v^bp
pivotIndex=(i+j)/2; ,c,Xd
pivot=data[pivotIndex]; RV0>-@/x
08Pt(kzNA
SortUtil.swap(data,pivotIndex,j); ,Lt~u_ lve
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file://partition C@TN5?Z
l=i-1; {[M0y*^64$
r=j; [)Z'N/;0
do{ '!j #X_;
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); C=oM,[ESQ0
SortUtil.swap(data,l,r); ?qd,>
} i\kTm?BQZ
while(l SortUtil.swap(data,l,r); F,p`-m[q
SortUtil.swap(data,l,j); O8K@&V p
wMH[QYb<*
if((l-i)>THRESHOLD){ S s@u,`pr
stack[++top]=i; c N02roQl
stack[++top]=l-1; ] ?DDCew
} Q(~3pt
if((j-l)>THRESHOLD){ 3W7;f!
stack[++top]=l+1; krQl^~@
stack[++top]=j; F\-B3i%0
} 8iMF 8\
~_DF06G
} NLcO{
file://new InsertSort().sort(data); 54
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insertSort(data); g9yaNelDh)
} rao</jN.9
/** Xt</ -`
* @param data Q!4i_)rM
*/ ${A5-
private void insertSort(int[] data) { G0_&gx`
int temp; ,{.zh&=4
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); U0NOU#
} :V&N\>Wo
} [D*J[?yt
} uL2"StW
1*C:hg@
} Zu\p;!e
Q0pC4WJ`
归并排序: ?TvQ"Y}k
cZNi~
package org.rut.util.algorithm.support; 1a7!4)\
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import org.rut.util.algorithm.SortUtil; :y=!{J<
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/** L8K0^~Mk
* @author treeroot 4`'8fe/"
* @since 2006-2-2 [8,PO
* @version 1.0 O0@w(L-
*/ 'M~BE\
public class MergeSort implements SortUtil.Sort{ Ze-MAt
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/* (non-Javadoc) HG2N-<$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -'I _*fu
*/ `d75@0:
public void sort(int[] data) { p]wP36<S!
int[] temp=new int[data.length]; q:vz?G
mergeSort(data,temp,0,data.length-1); 1*Sr5N[=
} .
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private void mergeSort(int[] data,int[] temp,int l,int r){ .CVUEK@Z4
int mid=(l+r)/2; k1wCa^*gc
if(l==r) return ; "e~k-\^Y
mergeSort(data,temp,l,mid); %4j&H!y-w;
mergeSort(data,temp,mid+1,r); ;knd7SC
for(int i=l;i<=r;i++){ |J:$MX~
temp=data; xKY$L*
} cvKV95bn
int i1=l; 1s Br.+p
int i2=mid+1; D+f'*|
for(int cur=l;cur<=r;cur++){ o:_^gJ+|
if(i1==mid+1) sT)6nV
data[cur]=temp[i2++]; ,VAp>x+O
else if(i2>r) N*~_\x
data[cur]=temp[i1++]; Q(lku"U'
else if(temp[i1] data[cur]=temp[i1++]; BR;QY1
else %moJF1
data[cur]=temp[i2++]; pJd 0k"{
}
\;-qdV_JB
} ;SfNKu
0eFb?Z0]
} GP* +
1 ojhh7<
改进后的归并排序: 9u?(^(.
L59bu/LfL
package org.rut.util.algorithm.support; ,!`SY)
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import org.rut.util.algorithm.SortUtil; 9ftN8Svw
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/** mV<i JZh
* @author treeroot 8)sg_JC
* @since 2006-2-2 2A*/C7
* @version 1.0 G-arnu)
*/ (B&h;U$HAH
public class ImprovedMergeSort implements SortUtil.Sort { nB=0T`vQ
Y[Es
private static final int THRESHOLD = 10; ~uB'3`x
DR6]-j!FK
/* qh-[L
* (non-Javadoc) aM), M]m[
* i`+B4I8[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tev QW
*/ GJX4KA8J
public void sort(int[] data) { Y&s2C%jT
int[] temp=new int[data.length]; `|]e6Pb
mergeSort(data,temp,0,data.length-1); }'lNi^"XL
} Q!K`e )R
Yj3 P 7k$c
private void mergeSort(int[] data, int[] temp, int l, int r) { sMH#BCC
int i, j, k; :lK4
db
int mid = (l + r) / 2; p'&*r2_ram
if (l == r) ob'n{T+lZ
return; *xcP`
if ((mid - l) >= THRESHOLD) k^^:;OR
mergeSort(data, temp, l, mid); 3%^z ?_
else GQx9u^>
insertSort(data, l, mid - l + 1); a\pi(9R
if ((r - mid) > THRESHOLD) |6%.VY2b
mergeSort(data, temp, mid + 1, r); "x&3Z@q7
else Tw//!rpG
insertSort(data, mid + 1, r - mid); L~dC(J)@ZI
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for (i = l; i <= mid; i++) { vBNZ<L\|a
temp = data; }~Q5Y3]#~
} 5 [4Z=RP
for (j = 1; j <= r - mid; j++) { XrS\+y3
temp[r - j + 1] = data[j + mid]; L,~MicgV
} Fd7*]a
int a = temp[l]; '&by3y5w-3
int b = temp[r]; H0a-(
for (i = l, j = r, k = l; k <= r; k++) { =Y9\DeIZ
if (a < b) { pcH<gF(k
data[k] = temp[i++]; <*u C
a = temp; bD<qNqX$
} else { }E; F)=E
data[k] = temp[j--]; S5_t1wqBJ
b = temp[j]; wVqd$nsY"
} :
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} C c*({
} JRO$<
M$A#I51
/** &aPl`"j
* @param data %jEY3q
* @param l <tbZj=*O/o
* @param i i"HgvBHx
*/ 9cd 8=][
private void insertSort(int[] data, int start, int len) { K)S;:MLG=
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); z856 nl
} >|3a
9S
} 0@)%h&mD
} frN3S
} Km3&N
DA"}A`HfI
堆排序: zoP%u,XL
@Z;1 g
package org.rut.util.algorithm.support; F
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Y-p<qL|_
import org.rut.util.algorithm.SortUtil; \k@Z7+&7
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/** "&lN\&:
* @author treeroot Z0ReWrl;`
* @since 2006-2-2 )ofm_R'q*
* @version 1.0 #tjmWGo,
*/ t`G)b&3_O
public class HeapSort implements SortUtil.Sort{ :eOR-}p'
nrpI5t.b
/* (non-Javadoc) M3pjXc<O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f vLC_'M
*/ +a|/l
public void sort(int[] data) { }Qrab#v
MaxHeap h=new MaxHeap(); '#Dg8/r!
h.init(data); {J]-<:XD
for(int i=0;i h.remove(); YQgNv` l}
System.arraycopy(h.queue,1,data,0,data.length); Pxhz@":[
} z^W$%G
}+RB=#~o
private static class MaxHeap{ 6)e5zKW!?
?znSx}t
void init(int[] data){ `cr(wdvI
this.queue=new int[data.length+1]; [pgZbOIN37
for(int i=0;i queue[++size]=data; ] hE="z=n
fixUp(size); @Bs0Avj.
} 4h|dHXYZ
} _+w/
pS`M
%f&< wC
private int size=0; .Q&rfH3
I,O#X)O|i
private int[] queue; /#S>sOg2xq
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public int get() { ~`eHHgX
return queue[1]; :b/jNHJU
} ~xyw>m+o.
v6uxxsI>Hm
public void remove() { ;(6P6@+o
SortUtil.swap(queue,1,size--); *P2[qhP2
fixDown(1); |n6Eg9
} *'R#4@wmP
file://fixdown A0xC,V~z
private void fixDown(int k) { ~kKrDLW+
int j; J]pa4C`
while ((j = k << 1) <= size) { SKXD^OH
if (j < size %26amp;%26amp; queue[j] j++; o-eKAkh
if (queue[k]>queue[j]) file://不用交换 ^_>!B)
break; Q\kub_I{@
SortUtil.swap(queue,j,k); Sm|(
k = j; m)&znLA
} SEF6B45}1
} \#dl6:"
private void fixUp(int k) { Q M1F?F
while (k > 1) { +S~.c;EK
int j = k >> 1; {G*QY%j^
if (queue[j]>queue[k]) GsV4ZZ
break; u oVNK
SortUtil.swap(queue,j,k); Qv#]81i(1
k = j; eN-au/kN
} BC/_:n8O
} 3Wx,oq;4-
tRfm+hqRZ
} 1BTIJ G w
9dKul,c
} 7#2j>G{?]v
>nnY:7m
SortUtil: KMjg;!y
RKTb'3H
package org.rut.util.algorithm; B0)]s<<
0 bSA_
import org.rut.util.algorithm.support.BubbleSort; F^kwdS
import org.rut.util.algorithm.support.HeapSort; =-jD~rN4;P
import org.rut.util.algorithm.support.ImprovedMergeSort; N$ alUx*
import org.rut.util.algorithm.support.ImprovedQuickSort; O/OiQ^T
import org.rut.util.algorithm.support.InsertSort; py<_HyJ
import org.rut.util.algorithm.support.MergeSort; \2X$C#8E
import org.rut.util.algorithm.support.QuickSort; F 3RB
import org.rut.util.algorithm.support.SelectionSort; F0dI/+
import org.rut.util.algorithm.support.ShellSort; 3$p#;a:=n
Utt>H@t[
/** E{Vo'!LY
* @author treeroot n9hm790x-
* @since 2006-2-2 ;b%{ilx:
* @version 1.0 A7-r<s
*/ <94G
public class SortUtil { bEH
de*q(
public final static int INSERT = 1; .BZVX=x
public final static int BUBBLE = 2; .v`b[4M4
public final static int SELECTION = 3; e~\QE0Oe :
public final static int SHELL = 4; zlf}.
public final static int QUICK = 5; Hi,t@!!
public final static int IMPROVED_QUICK = 6; ff cLuXa
public final static int MERGE = 7; h)x_zZ%>o
public final static int IMPROVED_MERGE = 8; RA/EpD:H
public final static int HEAP = 9; ps1@d[n
sH!O0WL
public static void sort(int[] data) { lZ+!H=`
sort(data, IMPROVED_QUICK);
<!'M} s
} x:z0EYL
private static String[] name={ WjMRH+
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" t#b0H)
}; .p@N:)W6
<,8l *1C
private static Sort[] impl=new Sort[]{ 2qj{n+
new InsertSort(), V[hK2rVH.
new BubbleSort(), \,xFg w4
new SelectionSort(), ~1(j&&kXet
new ShellSort(), t/p $
new QuickSort(), ae`|ic
new ImprovedQuickSort(), UQ8bN I7
new MergeSort(), Omyt2`q
new ImprovedMergeSort(), IF_D Z
new HeapSort() \7 a4uc
}; J)x3\[}Ye
c{3rl;Cs
public static String toString(int algorithm){ s:|M].
return name[algorithm-1]; y!Cc?$]_Y
} ^^?q$1k6r*
l},NcPL`
public static void sort(int[] data, int algorithm) { gA^q^>7
impl[algorithm-1].sort(data); 8b&uU [
} , Ww
SBf FZw)
public static interface Sort { #Ob]]!y
public void sort(int[] data); T{Zwm!s
} v%91k
B@K[3
public static void swap(int[] data, int i, int j) { {=JF=8@A
int temp = data; Px;Cg
6
data = data[j]; T[uDZYx
data[j] = temp; ]> G&jd7
} igkz2S I
} M7dU@ Ag