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。 h}kJ,n
插入排序: lc3Gu78 A/
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package org.rut.util.algorithm.support; s;$f6X
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import org.rut.util.algorithm.SortUtil; Qqs1%u;e8
/** # 1dg%
* @author treeroot |gIE$rt-~W
* @since 2006-2-2 [2h.5.af
* @version 1.0 Keem\/
*/ P^tTg
public class InsertSort implements SortUtil.Sort{ (|NC xey
l qKj;'
/* (non-Javadoc) !-%XrU8o3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) " m13HS
*/ keFH
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public void sort(int[] data) { 2t
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int temp; {Ay dt8
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~9E_L?TW*
} D~#%^a+Aq_
} [:cvy[}v@
} =E<H_cUS
}pIn3B)
} D
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冒泡排序: _^NyLI%
t"Ah]sD
package org.rut.util.algorithm.support; cvG*p||
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import org.rut.util.algorithm.SortUtil; ex6R=97uA
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/** E&eY79
* @author treeroot ;j7G$s9
* @since 2006-2-2 .6xMLo,R
* @version 1.0 m uy^>2p
*/ Q$v00z]f*
public class BubbleSort implements SortUtil.Sort{ -J8Hsqf@
{/H<_
/* (non-Javadoc) CS~_>bn
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]Yw$A
*/ ts9wSx~[+
public void sort(int[] data) { a[ayr$Hk?
int temp; ^
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for(int i=0;i for(int j=data.length-1;j>i;j--){ GEA1y^b6"
if(data[j] SortUtil.swap(data,j,j-1); g,rmGu3v
} &K{8-
t
} D>-r `
} -Ep#q&\
} 8-B7_GoJ+B
p @nj6N.--
} o~)o/(>ox
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选择排序: kDMvTVd
cw{TS
package org.rut.util.algorithm.support; (D) KU9B>
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import org.rut.util.algorithm.SortUtil; Uq$/Q7
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/** }#7rg_O]>
* @author treeroot e-`.Ht
* @since 2006-2-2 &UOxS W
* @version 1.0 M{{kO@P"9
*/ .JXEw%I@
public class SelectionSort implements SortUtil.Sort { 5dI=;L>D
T7.Iqw3p
/* @$ Zh^+x!
* (non-Javadoc) XhHgXVVGG<
* OyF=G^w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R`Z"ey@C
*/ }!oEjcX'
public void sort(int[] data) { .i
I{
int temp; b4i=%]v8
for (int i = 0; i < data.length; i++) { hdHz", )
int lowIndex = i; 1o%#kf
for (int j = data.length - 1; j > i; j--) { 45sEhs[$
if (data[j] < data[lowIndex]) { CqlxE/|
lowIndex = j; Y?NL|cW4
} Nw1*);b[y
} 1+uZF
SortUtil.swap(data,i,lowIndex); CTRUr"
} R~kO5jpW
} ?$ e]K/*
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} 0Eb4wupo
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Shell排序: :LY.C<8
JM|HnyI
package org.rut.util.algorithm.support; "u!gfG?oH
dX cbS<
import org.rut.util.algorithm.SortUtil; QQ .?A(U7
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/** ~p?ArZb
* @author treeroot Wvf>5g)?
* @since 2006-2-2 gZ$
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* @version 1.0 ~3?-l/ $
*/ WJhTU@'
public class ShellSort implements SortUtil.Sort{ x?{UWh%
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/* (non-Javadoc) ;rT'~?q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wWb>V&3
*/ $lJcC |*
public void sort(int[] data) { !Ud'(iGa
for(int i=data.length/2;i>2;i/=2){ ?f"5yQ-B
for(int j=0;j insertSort(data,j,i); |NZi2Bu
} hi1Ial\Y
} 5p[}<I{
insertSort(data,0,1); U.Mfu9}#:
} :S0!
=#V^t$
/** !Zj]0,^
* @param data pY"WW0p"C
* @param j ls^Z"9P
* @param i `|ie#L(:7/
*/ <#C,66k
private void insertSort(int[] data, int start, int inc) { \N*([{X
int temp; 9E2iZt]
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); R VatGa0
} 6e+'Y"v
} 3Tl<ST\
} Ds">eNq
e
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} ^~YT<cJ1h
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快速排序: {=ox1+d
SV>tw`2
package org.rut.util.algorithm.support; =9jK\ T^
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import org.rut.util.algorithm.SortUtil; <giBL L!
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/** 13X}pnW
* @author treeroot 7y'uZAF
* @since 2006-2-2 ^<CVQ8R7
* @version 1.0 'ZuS
*/ A`Z/B[)
public class QuickSort implements SortUtil.Sort{ ]u|fLK.|
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/* (non-Javadoc) T$%|=gq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y@3p5o9lv-
*/ t%lat./yT
public void sort(int[] data) { rm[C{Pn
quickSort(data,0,data.length-1); >$4#G)s
} $d?W1D<A
private void quickSort(int[] data,int i,int j){ G\@pg;0|y
int pivotIndex=(i+j)/2; bE _8NA"2
file://swap qiNVaV\wr|
SortUtil.swap(data,pivotIndex,j); g_Z
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@j/2 $
int k=partition(data,i-1,j,data[j]); ~#pATPW@(
SortUtil.swap(data,k,j); Za:j;u
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if((k-i)>1) quickSort(data,i,k-1); ;V}:0{p
if((j-k)>1) quickSort(data,k+1,j); dJ"M#X!Zu
``-N2U5
} X;I9\Cp]!
/** |./mPV r
* @param data h aAY =:
* @param i ]q]xU,
* @param j ;+9OzF ;
* @return G*CPj^O
*/ 4ijtx)SA
private int partition(int[] data, int l, int r,int pivot) { C-&ymJC|
do{ %fj5;}E.
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); @Vm*b@
SortUtil.swap(data,l,r); n Nt28n@
} 1R2IlUlzFr
while(l SortUtil.swap(data,l,r); K zWo}tT
return l; V@
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} s<O$
Y
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} -YA,Stc-
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改进后的快速排序: '2(m%X\6
+,76|oMsQ%
package org.rut.util.algorithm.support; FdU]!GO-X
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import org.rut.util.algorithm.SortUtil; l=~!'1@L}
5J5?cs-!
/** }HgG<.H>
* @author treeroot a1Fx|#!
mq
* @since 2006-2-2 gEh/m.L7
* @version 1.0 MGg(d
*/ =X$ ieXq|
public class ImprovedQuickSort implements SortUtil.Sort { G@8)3 @
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private static int MAX_STACK_SIZE=4096; 4#$#x=:
private static int THRESHOLD=10; <Ky-3:pxeM
/* (non-Javadoc) qN!oN*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g) X3:=['
*/ Ew8@{X
y
public void sort(int[] data) { &.)=>2
int[] stack=new int[MAX_STACK_SIZE]; (@?mm
tB_le>rhl
int top=-1; SQodk:1)
int pivot; 384n1?
int pivotIndex,l,r; o4Q?K.9c
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stack[++top]=0; \nl(tU#j
stack[++top]=data.length-1; SI7rTJ]/
@^,q/%;
while(top>0){ >ahDc!Jyu
int j=stack[top--]; L:i&OCU2k
int i=stack[top--]; _7Y
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pivotIndex=(i+j)/2; c./\sN@
pivot=data[pivotIndex]; VvhfD2*T
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SortUtil.swap(data,pivotIndex,j); ?@64gdlwq
=2R4Z8G
file://partition ":]Xr!e
l=i-1; u$nzpw0=H
r=j; 6!<I'M'[e
do{ &YhAB\Rw
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); w~3X
m{
SortUtil.swap(data,l,r); h@,ja
} O. * 0;5
while(l SortUtil.swap(data,l,r); e"
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SortUtil.swap(data,l,j); !<[+u
mqSVd^
if((l-i)>THRESHOLD){ bLc5$U$!I
stack[++top]=i; cO?*(e1m=
stack[++top]=l-1; oi #B7
} s QDgNJbU
if((j-l)>THRESHOLD){ jPh<VVQ$@
stack[++top]=l+1; ;UdM8+^/V]
stack[++top]=j; BQu
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} i VSNara
`PWKA;W$0
} J/1kJ@5
file://new InsertSort().sort(data); DE(XSzX
insertSort(data); j7I=2xnTWu
} (Y1*Bs[l
/** Q):#6|u+
* @param data 6N/(cUXJ
*/ ~ k*]Z8Z
private void insertSort(int[] data) { _>gz&
int temp; 85<k'>~L
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); XC<fNK
} zJDHDr
} -E-#@s
} N_Us6X
K?.~}82c
} &PMQ]B
[gW eD
归并排序: a&s34Pd
}">r0v!3
package org.rut.util.algorithm.support; Ycr3$n]e
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import org.rut.util.algorithm.SortUtil; ~&?([}A
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/** >S5J^c
* @author treeroot pW]j.JM
* @since 2006-2-2 !BQt+4G7
* @version 1.0 mWviWHK
*/ %i9S"
public class MergeSort implements SortUtil.Sort{ ;,{_=n>
r)<A YX]J
/* (non-Javadoc) OUv )`K
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P\"kr?jZP
*/ T?3Q<[SmI
public void sort(int[] data) { %\'=Y/yP
int[] temp=new int[data.length]; }7.A~h
mergeSort(data,temp,0,data.length-1); i?T-6{3I
} |MNSIb&,W
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private void mergeSort(int[] data,int[] temp,int l,int r){ .6y+van
int mid=(l+r)/2; u]ms~rO
if(l==r) return ; PT>b%7Of
mergeSort(data,temp,l,mid); *HrEh;3^J
mergeSort(data,temp,mid+1,r); ((M,6Q}
for(int i=l;i<=r;i++){
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temp=data; "L>'X22ed
} Vgm*5a6t
int i1=l; #`Su3~T=S
int i2=mid+1; '#Wx@
for(int cur=l;cur<=r;cur++){ /^=1]+_!
if(i1==mid+1) c>bns/f
data[cur]=temp[i2++]; :82T!
else if(i2>r) lZk
z\
data[cur]=temp[i1++]; CE"/&I
else if(temp[i1] data[cur]=temp[i1++]; .s{"NqRA
else D||0c"E
data[cur]=temp[i2++]; LOU P
} BlJiHz!
} oidZWy
Jm_)}dj3o
} '_v~+
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改进后的归并排序: qda 2
ebA:Sq:w
package org.rut.util.algorithm.support; t<rIg1
# ~<]z
import org.rut.util.algorithm.SortUtil; :qm\FsO
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/** N[Z`tk?-
* @author treeroot sH6;__e
* @since 2006-2-2 (.-4Jn
* @version 1.0 -XYvjW,|
*/ D07M!U
public class ImprovedMergeSort implements SortUtil.Sort { hQ#e;1uD
l>6tEOXt
private static final int THRESHOLD = 10; $>)0t@[f
7.
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/* [CQR
* (non-Javadoc) /A9RmTb
* v ,")XPY
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qzW3MlD
*/ Yjoe|
public void sort(int[] data) { <rzP
int[] temp=new int[data.length]; NK|UeL7ght
mergeSort(data,temp,0,data.length-1); B&cIx~+
} W9SU1{*9
*PF<J/Pr
private void mergeSort(int[] data, int[] temp, int l, int r) { NQ{(G8x9
int i, j, k; P%|~Ni_BTX
int mid = (l + r) / 2; sK2N3B&6
if (l == r) #/>TuJc
return; `7/(sX.
if ((mid - l) >= THRESHOLD) ;UQza ]i
mergeSort(data, temp, l, mid); &ijz'Sg3
else SAP/jD$5]>
insertSort(data, l, mid - l + 1); w/|&N>ZOx
if ((r - mid) > THRESHOLD) @R&d<^I&M
mergeSort(data, temp, mid + 1, r); |62` {+
else wn"}<ka
insertSort(data, mid + 1, r - mid); 5/"$_7"{a
P%2v(
for (i = l; i <= mid; i++) { E+]}KX:
temp = data; zud_BOq{f
} Im;%.J
for (j = 1; j <= r - mid; j++) { ;e?M;-
temp[r - j + 1] = data[j + mid]; ?[JP[
qS
} J*;RL`
int a = temp[l]; 8?Zhh.
int b = temp[r]; ]PS`"o,pF$
for (i = l, j = r, k = l; k <= r; k++) { 9@|52dz%
if (a < b) { 5%jhVys23
data[k] = temp[i++]; <YyE1|
a = temp; (%6fMVp
} else { |nNcV~%~
data[k] = temp[j--]; hTDK[4e
b = temp[j]; Qu|CXUk
} =F+v+zP7P
} /h>g-zb
} z:\9t[e4
p@jw)xI
/** i.mv`u Dm
* @param data re*}a)iL
* @param l =Dn<DV
* @param i !Se0&Ob
*/ %#2$B+
private void insertSort(int[] data, int start, int len) { yCxYFi
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); D0Q9A]bD;
} JLu$1A@ '
} rqjq}L )
} ~P|;Y<?3
} ?~o`mg
5m1J&TZ0
堆排序: OHndZ$'fI
s!IIvF
package org.rut.util.algorithm.support; 3-/|G-4k7
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import org.rut.util.algorithm.SortUtil; AYn65Ly
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/** 3m>YR-n$
* @author treeroot 1Dr&BXvf]8
* @since 2006-2-2 h ;*x1BVE
* @version 1.0 >eTbg"\
*/ iwF_'I$#N
public class HeapSort implements SortUtil.Sort{ 2F2Hl
:-RB< Lj
/* (non-Javadoc) FOF@@C~aH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mG1~rI
*/ <&\ng^Z$
public void sort(int[] data) { ^+yz}YFM
MaxHeap h=new MaxHeap(); CzBYH
h.init(data); "W(D0oy
for(int i=0;i h.remove(); Y:DopKRD
System.arraycopy(h.queue,1,data,0,data.length); )Q=u[ p
} b<tV>d"Fv
72;'8
private static class MaxHeap{ -_ 9k+AV
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void init(int[] data){ :Q`Of}#
this.queue=new int[data.length+1]; /#00'(oD
for(int i=0;i queue[++size]=data; aBC5?V*e%
fixUp(size); QATRrIj{e
} Bc8&-eZ,
} J.UNw8z
"1,*6(;:
private int size=0; ]he~KO[j<
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private int[] queue; nL?P/ \
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public int get() { "lt <$.
return queue[1]; |"}rdOV)
} iDDJJ>F26
@V
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public void remove() { lc
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SortUtil.swap(queue,1,size--); :of([e|u6
fixDown(1); @1oX
} [l-o*@
file://fixdown N[cIr{XBGN
private void fixDown(int k) { +mrLMbBiD
int j; J|I*n
while ((j = k << 1) <= size) { neU=1socJ
if (j < size %26amp;%26amp; queue[j] j++; p<r^{y
if (queue[k]>queue[j]) file://不用交换 ^t3>Z|DiB^
break; k@7#8(3
SortUtil.swap(queue,j,k); w>B}w
k = j; 2q[pOT'k
} ;y(;7n_ a
} IT NFmD
private void fixUp(int k) { x{;{fMN1
while (k > 1) { 'ayb`
int j = k >> 1; _|\X8o_
if (queue[j]>queue[k]) ?q`i
MiN
break; frcX'M}%
SortUtil.swap(queue,j,k); brTNwRze
k = j; ?pIELezfK
} }aOqoi7w
} y`j_]qvt
:Fhk$?/r
} a8TtItN
:? )!yI
} V<5. 4{[G
z*T41;b
SortUtil: 79 4UY
x=H{Rv
package org.rut.util.algorithm; 4AL,=C3
B!mHO*g
import org.rut.util.algorithm.support.BubbleSort; HsYzIQLL
import org.rut.util.algorithm.support.HeapSort; `]65&hWZL
import org.rut.util.algorithm.support.ImprovedMergeSort; K\ Wzh;
import org.rut.util.algorithm.support.ImprovedQuickSort; _
uOi:Ti
import org.rut.util.algorithm.support.InsertSort; A!GvfmzqIn
import org.rut.util.algorithm.support.MergeSort; W^09tx/I
import org.rut.util.algorithm.support.QuickSort; (LsVd2AbR
import org.rut.util.algorithm.support.SelectionSort; q5r7KYH{
import org.rut.util.algorithm.support.ShellSort; Yp(0 XP5o
s YTJ^K d
/** \j!/l
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* @author treeroot n`^jNXE
* @since 2006-2-2 346 z`5
* @version 1.0 oC"
[rn
*/ &FmTT8"l
public class SortUtil { ^nZ=B>Yn2
public final static int INSERT = 1; _f2rz+
public final static int BUBBLE = 2; l'm|**
public final static int SELECTION = 3; TAh'u|{u2
public final static int SHELL = 4; Z5'^Hj1,
public final static int QUICK = 5; xppnBnu$7
public final static int IMPROVED_QUICK = 6; ;S^"Y:7)
public final static int MERGE = 7; "3jTU
public final static int IMPROVED_MERGE = 8; Ngx2N<$<*g
public final static int HEAP = 9; qy?$t:*pp
E[t[R<v,P!
public static void sort(int[] data) { {
(.@bT@
sort(data, IMPROVED_QUICK); &(<>}
r
} <`-sS]=d}
private static String[] name={ o.Ww.F
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" rZ,3:x-:
}; Uy=yA
>7@,,~3
private static Sort[] impl=new Sort[]{ )j'Qi^;(D
new InsertSort(), )}$rgYKJ
new BubbleSort(), Ruq;:5u
new SelectionSort(), 3KqRw (BK
new ShellSort(), !DA4q3-U>>
new QuickSort(), +D
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new ImprovedQuickSort(), -`ljKp
new MergeSort(), EyR/
new ImprovedMergeSort(), vg?(0Gasm*
new HeapSort() 6{d?3Jk
}; >4bw4
Z1
W`LG.`JW
public static String toString(int algorithm){ \="U|LzG
return name[algorithm-1]; :BR_%$
} O6e$v I@
J|jvqt9C
public static void sort(int[] data, int algorithm) { fiC0'4.,
impl[algorithm-1].sort(data); ?v,c)
} tMdSdJ8
^W}|1.uZ
public static interface Sort { uN?Lz1W\;
public void sort(int[] data); pno}`Cer
} Lm!]m\LRZD
C<C^7-5
public static void swap(int[] data, int i, int j) { vC&0UNe$
int temp = data; XU<owk
data = data[j]; 4D5Wse
data[j] = temp; yS
K81`
} Tn,_0
} [A,!3BN