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。 Gi4dgMVei
插入排序: :9#{p^:o
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package org.rut.util.algorithm.support; UyKG$6F?3
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import org.rut.util.algorithm.SortUtil; n3j h\
/** $IZZ`Z]B
* @author treeroot T<k1?h^7
* @since 2006-2-2 ^oO5t-9<!
* @version 1.0 vaJXX
*/ V_622~Tc/[
public class InsertSort implements SortUtil.Sort{ W+C_=7_
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/* (non-Javadoc) g@VndAp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E9 q;>)}
*/ 5THS5'
public void sort(int[] data) { +J8/,d
int temp; 9$@ g;?}Ps
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~c$ts&Cl
} 4 xzJql
} r;8z"*
} q'@Ei4
L#q9_-(#
} ?QT"sj64w
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冒泡排序: o
0ivja
E wsq0D
package org.rut.util.algorithm.support; |hQ|'VCN
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import org.rut.util.algorithm.SortUtil; A=]F_
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/** 4@iJ|l
* @author treeroot G5y
* @since 2006-2-2 <`UG#6z8
* @version 1.0 C_ZD<UPA\
*/ 15o
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public class BubbleSort implements SortUtil.Sort{ 4{WV
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/* (non-Javadoc) `R52{B#&/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Zbh]SF{3F
*/ yXo0z_ G
public void sort(int[] data) { Rue|<d1
int temp; ^WW|AS
for(int i=0;i for(int j=data.length-1;j>i;j--){ Q1\k`J
if(data[j] SortUtil.swap(data,j,j-1); =C>`}%XT}
} zQ %z"tQ
} U3+_'"
} VN-#R=D
} O| 6\g>ew
BRXb<M^;_
} KSB_%OI1
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选择排序: Q>a7Ps@~
L[Yp\[#-q
package org.rut.util.algorithm.support; AKCfoJ
K0RYI69_
import org.rut.util.algorithm.SortUtil; 8w8I:*
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/** 6`baQ!xc.
* @author treeroot 6Vbv$ AU
* @since 2006-2-2 }-q`&1!t
* @version 1.0 '}pgUh_
*/ '
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public class SelectionSort implements SortUtil.Sort { ; (0(8G
^HlLj#
/* OWXye4`*
* (non-Javadoc) %X,B-h^
* QJIItx4hE
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cov#Z
ux
*/ H;*a:tbxO+
public void sort(int[] data) { %3c|
int temp; H(G^O&ppdB
for (int i = 0; i < data.length; i++) { :{i$2\DH6
int lowIndex = i; bqQO E4;
for (int j = data.length - 1; j > i; j--) { ^c0$pqZ}r
if (data[j] < data[lowIndex]) { y.*=Ww+
lowIndex = j; cv*Q]F1%
} jFNs=D&(
} Q^MXiEO+
SortUtil.swap(data,i,lowIndex); "^
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} &e]]F#
} =Kt9,d08x
]O7.ss/2
} x\J;ZiWwW
qM1)3.)[:
Shell排序: ZkB6bji
|;.Pj3)-
package org.rut.util.algorithm.support; q
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<f.>jjwFE
import org.rut.util.algorithm.SortUtil; s\Pt,I@Y_
[cQ<dVaTX
/** B=gsd0^]
* @author treeroot ,v}?{pc
* @since 2006-2-2 Y7kb1UG
* @version 1.0 BU]WN7]D$
*/ *bxJ)9B
public class ShellSort implements SortUtil.Sort{ o!=lBfI
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/* (non-Javadoc) 4Ay`rG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j.;
*/ fZ6 fV=HEF
public void sort(int[] data) { % L >#
for(int i=data.length/2;i>2;i/=2){ "0'*q<8
for(int j=0;j insertSort(data,j,i); 1]
%W\RHxo
} /K,|k
EE'n
} JIP+ !2
insertSort(data,0,1); lLkmcHu
} 'Uko^R)(
zD)IU_GWa
/** T}t E/
* @param data o4/I1Mq
* @param j 'ybth
* @param i $W/+nmb)@K
*/ 1qLl^DW
private void insertSort(int[] data, int start, int inc) { ~3'RW0
int temp; ;J(rw
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); $h 08Z
} !]rETP_
} pFsCd"zv
} &SjHrOG?
.|-l+
} S$jV|xKB
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快速排序: tM^;?HL]
~MhgAC
package org.rut.util.algorithm.support; 2JiAd*WK
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import org.rut.util.algorithm.SortUtil; _(oP{wgB
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/** :Su #xI
* @author treeroot jD '
* @since 2006-2-2 kqKj7L
* @version 1.0 7b&JX'`Mb
*/ #+K
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public class QuickSort implements SortUtil.Sort{ fO^e+Mz
cBLR#Yu;O5
/* (non-Javadoc) 4{;8:ax&w
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ([,vX"4
*/ 1p7cv~#95
public void sort(int[] data) { K\IYx|Hm a
quickSort(data,0,data.length-1); VqK%^
} 8_a$kJJ2
private void quickSort(int[] data,int i,int j){ +mfe*'AU
int pivotIndex=(i+j)/2; Uvjdx(fY[a
file://swap RgB6:f,
SortUtil.swap(data,pivotIndex,j); 'yPCZ`5H(
}W:*aU
int k=partition(data,i-1,j,data[j]); \7Gg2;TA6o
SortUtil.swap(data,k,j); ?Oy'awf_
if((k-i)>1) quickSort(data,i,k-1); E0"10Qbi
if((j-k)>1) quickSort(data,k+1,j); W.,% 0cZ
R^J.?>0
} t&GA6ML#s
/** 9VoDhsKk
* @param data `z|=~
* @param i pk-yj~F }
* @param j NP K#].F
* @return ;wij}y-6
*/ Em e'Gk
private int partition(int[] data, int l, int r,int pivot) { Sl3KpZ
do{ [3O^0-:6E
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); $Wit17j
SortUtil.swap(data,l,r); 0U82f1ei
} cGgM8
while(l SortUtil.swap(data,l,r); _ PXG AS
return l; tcBC!_vF
} =n@F$/h
aO8ch
} "?apgx 6
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改进后的快速排序: m#oh?@0}
T-4/d5D[
package org.rut.util.algorithm.support; xGYSi5}z
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import org.rut.util.algorithm.SortUtil; XR*Q|4
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/** TZ?Os4+
* @author treeroot g%`i=s&N%
* @since 2006-2-2 hi!L\yi
* @version 1.0 Y,k(#=wg
*/
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public class ImprovedQuickSort implements SortUtil.Sort { u~s
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private static int MAX_STACK_SIZE=4096; weNzYMf%
private static int THRESHOLD=10; "pt+Fe|@c;
/* (non-Javadoc) Dt.0YKF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aSc{Ft/O
*/ TT'Ofvdc
public void sort(int[] data) { kf<c,3A
int[] stack=new int[MAX_STACK_SIZE]; CY34X2F
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int top=-1; _i5mC,OffN
int pivot; NF6X- ,cd
int pivotIndex,l,r; yJ%t^ X_
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stack[++top]=0; &!ED# gs
stack[++top]=data.length-1; ?2{bKIV_
z< z*Wz
while(top>0){ 0y)}.'
int j=stack[top--]; o4$Ott%Wm
int i=stack[top--]; 25UYOK}!
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pivotIndex=(i+j)/2; rkkU"l$v
pivot=data[pivotIndex]; led))qd@V-
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SortUtil.swap(data,pivotIndex,j); 6yY.!HRkr
BR+nL6sU
file://partition i=YXKe6fD
l=i-1; LH4>@YPGE#
r=j; {3VZ3i
do{ pD"YNlB^
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); {J (R
SortUtil.swap(data,l,r); KkEv#2n
} 1%%'6cWWu
while(l SortUtil.swap(data,l,r); WzjL-a(
SortUtil.swap(data,l,j); mw_ E&v
-K"4rz
if((l-i)>THRESHOLD){ F8H'^3`b`U
stack[++top]=i; c! @F
stack[++top]=l-1; _2b9QP p
} zbNA\.y
if((j-l)>THRESHOLD){ 2K;#Evn'j
stack[++top]=l+1; Z1M>-[j)
stack[++top]=j; iZaeoy
} @}WNKS&m
blGf!4H
} 3{KR
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file://new InsertSort().sort(data); ['z!{Ez
insertSort(data); n|Pr/ddL
} -T7%dLHY
/** b/t
* @param data Wt^|BjbB4
*/ !YiuwFt
private void insertSort(int[] data) { 98fu>>*G{
int temp; ;imRh'-V6
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); f/,tgA
} 4e +~.5r@i
} tAjx\7IX
} b.b@bq$1
.e@>
} LOr|k8tL%
b;#\~(a
归并排序: 3o*FPO7?
btH _HE
package org.rut.util.algorithm.support; c"7j3/p
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import org.rut.util.algorithm.SortUtil; h>alGLN>
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/** %K(0 W8&
* @author treeroot 1j0 -9Kg'
* @since 2006-2-2 LvJGvj
* @version 1.0 JQ@fuo %
*/ [ |[>}z:
public class MergeSort implements SortUtil.Sort{ q]\X~
9#
SHD^}?-|
/* (non-Javadoc) ,m^;&&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B<7/,d'
*/ =oX>Ph+ P
public void sort(int[] data) { >E:<E'L
int[] temp=new int[data.length]; eWvo,4
mergeSort(data,temp,0,data.length-1); @m~RtC-Q
} ?7jg(`Yh
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private void mergeSort(int[] data,int[] temp,int l,int r){ _n"Ae?TP
int mid=(l+r)/2; &.Q8Mi
aT
if(l==r) return ; |%1?3Mpn
mergeSort(data,temp,l,mid); fQ+\;iAU
mergeSort(data,temp,mid+1,r); ^N{ltgQY
for(int i=l;i<=r;i++){ u=r`t(Z1H
temp=data; N8v'70
} -kp swP
int i1=l; \'Z<P,8~
int i2=mid+1; )zq.4
for(int cur=l;cur<=r;cur++){ [mUBHYD7OI
if(i1==mid+1) y#v"GblM
data[cur]=temp[i2++]; <YFY{VC(
else if(i2>r) W2Luz;(U
data[cur]=temp[i1++]; :B|Dr
v
else if(temp[i1] data[cur]=temp[i1++]; PWB(5 f?
else 7\XE,;4>
data[cur]=temp[i2++]; cCY/gEv
} -"Q-H/qh
} 9 [jTs3l:
5,pSg
} 'Z&;uv,l
e-5?p~>
改进后的归并排序: nmFC%p)4
npp[@*~
package org.rut.util.algorithm.support; 06*rWu9P3
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import org.rut.util.algorithm.SortUtil; ^YvB9XN
g~S)aU\:,
/** kforu!C
* @author treeroot @kFu*"
* @since 2006-2-2 FP^{=0
* @version 1.0 R?66b{O
*/ cK`"lxO
public class ImprovedMergeSort implements SortUtil.Sort { >T jJA#
HKO739&n}
private static final int THRESHOLD = 10; !@A#=(4R4
{/<6v. v
/* 7=XL!:P
* (non-Javadoc) %7hB&[ 5
* c+dg_*^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <#+44>h
*/ &<pKx!
public void sort(int[] data) { LN2D
int[] temp=new int[data.length]; <3okiV=ox
mergeSort(data,temp,0,data.length-1); ^pnG0(9
} zsXoBD\h
C\ZkGX
private void mergeSort(int[] data, int[] temp, int l, int r) { !? 5U|
int i, j, k; qTQ!jN
int mid = (l + r) / 2; "xRBE\B
if (l == r) Jb["4X;h
return; <?Wti_ /M
if ((mid - l) >= THRESHOLD) q2rUbU_A(
mergeSort(data, temp, l, mid); x]|+\1
else vhuw&.\
insertSort(data, l, mid - l + 1); ULH0'@BJ
if ((r - mid) > THRESHOLD) TBrGA
E
mergeSort(data, temp, mid + 1, r); } MbH3ufC
else Q,h7Sk*
insertSort(data, mid + 1, r - mid); C1EtoOv K
%wptZ"2M
for (i = l; i <= mid; i++) { k0-G$|QgIp
temp = data; cLY c6
} qU6nJi+-I
for (j = 1; j <= r - mid; j++) { 1xE]6he4{T
temp[r - j + 1] = data[j + mid]; Mg,:UC:
} +;}#B~:
int a = temp[l]; #-% A[7Cdp
int b = temp[r]; JPn$FQD
for (i = l, j = r, k = l; k <= r; k++) { k>jbcSY(z<
if (a < b) { _ee
dBpV
data[k] = temp[i++]; 7Q w|!
a = temp; 6x)$Dl
} else {
!R-z%
data[k] = temp[j--]; F}GPZ=T;
b = temp[j]; YC_5YY(k
} !QI\Fz?
} bI.t<;
} ^D`v3d
Mb1t:Xf^g
/** KOz(TZ?u
* @param data 8X|r4otn4
* @param l ^ci3F<?Q=
* @param i 1?*
*/ 0[?ny`Y
private void insertSort(int[] data, int start, int len) { &UCsBqIY
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 4MuO1W-
} 2Qp Hvsl_
} E{^ XlY
} Rm1A>1a:
} A\_ |un%
+
b$=[nfG
堆排序: -x8nQ%X
p!O(Y6QM
package org.rut.util.algorithm.support; |2\{z{?
~_IHaw$hg
import org.rut.util.algorithm.SortUtil; RB* J=
/2EHv.e`
/** Ch$*Gm19Z
* @author treeroot jcNT<}k
C
* @since 2006-2-2 Uy
?
* @version 1.0 ;w|b0V6
*/ ]lw|pvtd
public class HeapSort implements SortUtil.Sort{ AcI,N~~
VvFC -r,=G
/* (non-Javadoc) l\M_-:I+4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ ;,i]w"*
public void sort(int[] data) { Uj+j}C
MaxHeap h=new MaxHeap(); a22Mufl
h.init(data); X|0R=n]
for(int i=0;i h.remove(); \<}&&SuH
System.arraycopy(h.queue,1,data,0,data.length); f7h*Vu`>
} /!^&;$A'
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private static class MaxHeap{ c|F[.;cR
kn)t'_jC
void init(int[] data){ [V'QrcCF
this.queue=new int[data.length+1]; :=%0Mb:
for(int i=0;i queue[++size]=data; o?1;<gs
fixUp(size); Xc"&0v%;#
} [aI]y=v
} s&\I=J.
B+^(ktZp@
private int size=0; \AL
f$88>@
!RyO\>:q
private int[] queue; \#o2\!@`
K=!Bh*
public int get() { fwK}/0%
return queue[1]; (b'B%rFO
} V $z}
K
=@k%&* Y?
public void remove() { upj]6f"(
SortUtil.swap(queue,1,size--); .h0b~nI>>
fixDown(1); w
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} [mEql,x3
file://fixdown U=hlu
private void fixDown(int k) { Y"-^%@|p
int j; =+t^ f
while ((j = k << 1) <= size) { s"Pf+aTW
if (j < size %26amp;%26amp; queue[j] j++; n,B,"\fw
if (queue[k]>queue[j]) file://不用交换 >^XBa*4;Y
break; P/EM :
SortUtil.swap(queue,j,k); J|'7_0OAx
k = j; Ut$;ND.-
} kP/M<X"
} 6c^e\0q
private void fixUp(int k) { asY[8r?U
while (k > 1) { \(t@1]&jw
int j = k >> 1; 0b4R
if (queue[j]>queue[k]) CR6R?R3b
break; /dv<qp
SortUtil.swap(queue,j,k); el:9 wq
k = j; 5@^ dgq
} bdGIF'p%
} \P1S|ufv
K&8dA0i2u2
} k)TSR5A
kcb.Wz~=
} JyR/1 W
sKlDu
SortUtil: ooUk O
71vkyn@"
package org.rut.util.algorithm; -V: "l
t3dlS`O
import org.rut.util.algorithm.support.BubbleSort; TLoz)&@
import org.rut.util.algorithm.support.HeapSort; $Y5)(
import org.rut.util.algorithm.support.ImprovedMergeSort; Gs3LB/8?
import org.rut.util.algorithm.support.ImprovedQuickSort; #v<QbA
import org.rut.util.algorithm.support.InsertSort; MwmUgN"g
import org.rut.util.algorithm.support.MergeSort; &QhX1dT+
import org.rut.util.algorithm.support.QuickSort; wn)JXR
import org.rut.util.algorithm.support.SelectionSort; ~I{n^Q/a
import org.rut.util.algorithm.support.ShellSort; +-E~6^>
$H+VA@_
/** e["2QIOe
* @author treeroot LBF 1;zjK
* @since 2006-2-2 =m5SK5vLKT
* @version 1.0 gn3jy^5
*/ NJNJjdD>
public class SortUtil { SRDXfkoI
public final static int INSERT = 1; X^WrccNX
public final static int BUBBLE = 2; #>j.$2G>
public final static int SELECTION = 3; |j 6OM{@
public final static int SHELL = 4; B" 3dQwQ
public final static int QUICK = 5; Qx [t/~
public final static int IMPROVED_QUICK = 6; qIld;v8w"g
public final static int MERGE = 7; <!pY$
public final static int IMPROVED_MERGE = 8; !qX_I db\
public final static int HEAP = 9; B/`
!K
i86>]
public static void sort(int[] data) { E*jP8 7g
sort(data, IMPROVED_QUICK); ?s:d[To6
} 5Kkdo!z
private static String[] name={ V*W;OiE_3
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 3> Y6)
}; gks{\ H]
o1<_fI
private static Sort[] impl=new Sort[]{ hGiz)v~
new InsertSort(), <n(*Xak{a
new BubbleSort(), A'2w>8
new SelectionSort(), a{[x4d,z
new ShellSort(), Me=CSQqf<
new QuickSort(), Br`IW
new ImprovedQuickSort(), tO0!5#-VR
new MergeSort(), [H=)
new ImprovedMergeSort(), W^s
;Bi+Nw
new HeapSort() )n ,P"0
}; zA[0mkC?$
% rxO_
public static String toString(int algorithm){ H/Llj.-jg
return name[algorithm-1]; up'Tit
} );FJx~b
lGVEpCS}
public static void sort(int[] data, int algorithm) { L(U"U#QZ
impl[algorithm-1].sort(data); F4K0);
} 9]e V?yoA8
$ aUo aI
public static interface Sort { 48Mpf=f`
public void sort(int[] data); X,LD
} :rg5Kt&
7e<c$t#H
public static void swap(int[] data, int i, int j) { p ZZc:\fJ
int temp = data; _r2J7&
data = data[j]; ai{Sa U
data[j] = temp; x:QgjK
} ;$z$@@WC
} P LueVz