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。 \j]i"LpWb
插入排序: TPrqb
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package org.rut.util.algorithm.support; OXuBtW*,z+
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import org.rut.util.algorithm.SortUtil; C-abc+/
/** UmSy p\i
* @author treeroot
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* @since 2006-2-2 |A#pG^
* @version 1.0 4~3 N;]X
*/ lXS.,#lp
public class InsertSort implements SortUtil.Sort{ T8,?\7)S9
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/* (non-Javadoc) O!(M:.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ph'P<h:V
*/ kw>W5tNpf:
public void sort(int[] data) { I=)u:l c
int temp; .>0j<|~
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); J?~El&
} ? -PRS.=%
} W0&NX`m
} ^b]h4z$
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} "RH pj3 si
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冒泡排序: fG107{!g=
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package org.rut.util.algorithm.support; fWKI~/eUY|
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import org.rut.util.algorithm.SortUtil; ~5[#c27E9
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/** +pcpb)VL
* @author treeroot dMw0Aw,2]8
* @since 2006-2-2 ]kQ*t{\
* @version 1.0 +,&8U&~`
*/ ykv,>nSXLL
public class BubbleSort implements SortUtil.Sort{ k[0Gz
r
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/* (non-Javadoc) 6\7bE$K
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9gFema{U
*/ 6px(]QU
public void sort(int[] data) { -s5j^U{h|
int temp; 0>?%{Xy
for(int i=0;i for(int j=data.length-1;j>i;j--){ d|!FI/
if(data[j] SortUtil.swap(data,j,j-1); :d v{'O
} d7.}=E.L
} ^u@"L
} x w8
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} owDp?Sy}E
cRm+?/
} $[L~X
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选择排序: C:+-T+m[
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package org.rut.util.algorithm.support; LD]a!eY
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import org.rut.util.algorithm.SortUtil; %l4LX~-:
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/** B|9)4f&\=R
* @author treeroot KTr7z^
* @since 2006-2-2 ?/Bp8q(
* @version 1.0 )N4!zuSVf
*/ K(
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public class SelectionSort implements SortUtil.Sort { X}@^$'W
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/* 4PtRTb0<i3
* (non-Javadoc) OIpkXM
* *E*=
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'aYUF&GG
*/ _Mi`]VSq9
public void sort(int[] data) { ]}t6V]`Q
int temp; $#VE C0
for (int i = 0; i < data.length; i++) { .ME>ICA
int lowIndex = i; a<c]N:1
for (int j = data.length - 1; j > i; j--) { dux.Z9X?
if (data[j] < data[lowIndex]) { xeo5)
lowIndex = j; u^HC1r|%
} ^U"$uJz!c
} #NU@7Q[4
SortUtil.swap(data,i,lowIndex); P%VEJ5,]b
} 6V{Sf9V|
} 77KB-l2
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} *3.K; Ic;
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Shell排序: GtR!a
! =(OvX_<
package org.rut.util.algorithm.support; &PQhJ#YG
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import org.rut.util.algorithm.SortUtil; U"nk AW
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/** &8p]yo2zO
* @author treeroot E@}N}SR
* @since 2006-2-2 hkS0 ae
* @version 1.0 bTBV:]w
*/ M]c"4b;
public class ShellSort implements SortUtil.Sort{ >6Y@8 )
j) G<PW
/* (non-Javadoc) lZ5LHUzP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~e|RVY,
*/ }W2FF
public void sort(int[] data) { 3K;V3pJ].
for(int i=data.length/2;i>2;i/=2){ Db:^Omwo
for(int j=0;j insertSort(data,j,i); kq| r6uE
} JWZG)I]r
} =VC"X ?N
insertSort(data,0,1); V{jQ=<)@e
} /!7
bsuGZ
/** z):LF<
* @param data e}f#dR+(
* @param j voX4A
pl
* @param i O0Z!*Hy
*/ `O+}$wP
private void insertSort(int[] data, int start, int inc) { =Msr+P9Ai
int temp; 6zbqv 6
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); <M){rce
} 6zyxGJ(
} ]A?(OA
} o,r72>|
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} ^(+ X|t
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快速排序: rY?]p Mp
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package org.rut.util.algorithm.support; k|hy_? *
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import org.rut.util.algorithm.SortUtil; 7%j1=V/
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/** :@rq+wvP
* @author treeroot Lm-f0\(
* @since 2006-2-2 83(-/y
* @version 1.0
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*/ <z.Y#{p?k
public class QuickSort implements SortUtil.Sort{ As{Q9o5j/
e
w%rc.;
/* (non-Javadoc) !n`9V^`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4h*c{do
*/ %LM2CgH
V
public void sort(int[] data) { |*fi!nvk@
quickSort(data,0,data.length-1); H*.v*ro9_
} XWq`MwC9
private void quickSort(int[] data,int i,int j){ =67ab_V
int pivotIndex=(i+j)/2; &0*7]Wo*
file://swap ]D.}
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SortUtil.swap(data,pivotIndex,j); @vc9L
UuKW`(?^
int k=partition(data,i-1,j,data[j]); 5)c B\N1u
SortUtil.swap(data,k,j); Lo<WK
if((k-i)>1) quickSort(data,i,k-1); ?]%ZJd
if((j-k)>1) quickSort(data,k+1,j); i,h)VCc
xe4`D>LUo
} 9^?2{aP%
/** ZGw6Bd_I
* @param data %!\iII
* @param i +@^FUt=tq
* @param j {^@vCBE+
* @return (.J6>"K<
*/ M!`&Z9N
private int partition(int[] data, int l, int r,int pivot) { +xL' LCx
do{ u<U8LR=)V5
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); !#Pr'm/,mu
SortUtil.swap(data,l,r); {EjzJr>
} o$p]
p9
while(l SortUtil.swap(data,l,r); +;Pkpuu
return l; IKrojK8-?
} Y1wH_!%b
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LC^c
} K_Pbzj4(P
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改进后的快速排序: %N#A1
7](aPm8
package org.rut.util.algorithm.support; :IX_|8e ^
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import org.rut.util.algorithm.SortUtil; r0Zj'F_e
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/** HGao} @'
* @author treeroot /[qLf:rGI
* @since 2006-2-2 #e[S+a
* @version 1.0 2Rqpok4
*/ Ofc
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public class ImprovedQuickSort implements SortUtil.Sort { /pC60y}O0
782 oXyD
private static int MAX_STACK_SIZE=4096; |;(>q
private static int THRESHOLD=10; (GoxiX l
/* (non-Javadoc) jL{k!V`s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8 4lT# ^q
*/ >l b9 j>
public void sort(int[] data) { Ub{7 Xk
n
int[] stack=new int[MAX_STACK_SIZE]; Y1;jRIOA
6`@6k2]
int top=-1; 5FVmk5z]d
int pivot; q:1n=iEi
int pivotIndex,l,r; 8]i7wq#=
v*kX?J#]5
stack[++top]=0; '=+gweM
stack[++top]=data.length-1; M4n0GWHLy
Cb6K!5[q]
while(top>0){ *qJHoP;
int j=stack[top--]; ?L| Ai\|
int i=stack[top--]; 0Q~\1D 9g
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pivotIndex=(i+j)/2; q8)wAl
pivot=data[pivotIndex]; !<<wI'8
Jsa;pG=3&
SortUtil.swap(data,pivotIndex,j); :(K JLa]
3T
/_#=9TV
file://partition 6st^-L
l=i-1; Us\Nmso
z
r=j; N[I ?x5:u
do{ GBTwQYF
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 9aYVbq""
SortUtil.swap(data,l,r); ck$>
} :7*9W|e
while(l SortUtil.swap(data,l,r); H~?7:K
SortUtil.swap(data,l,j); BxiR0snf0q
DFbhy
if((l-i)>THRESHOLD){ sVH
w\_F$
stack[++top]=i; \.?'y71
stack[++top]=l-1; h^YUu`P
} yJ>Bc
if((j-l)>THRESHOLD){ g'9~T8i& ^
stack[++top]=l+1; v=daafO
stack[++top]=j; ,=[r6k<
} y:Ag mr,S
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} PB) vE
file://new InsertSort().sort(data); E_0i9
insertSort(data); ~i]4~bkH2
} sw50lId
/** oz%{D@CF
* @param data R*H-QH/H1
*/ &srD7v9M8
private void insertSort(int[] data) { hb(H-`16
int temp; ex.^V sf_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); K."W/A!
} |9[)-C~N7
} 4j(*%da
} wauM|/KG
D|2lBU
} "$3~):o
B}@CtVWFz
归并排序: {rzQ[_)EC
x=N0H
package org.rut.util.algorithm.support; TpYdIt9#>
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import org.rut.util.algorithm.SortUtil; 59(kk;
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/** 4 g8t
* @author treeroot 8\+XtS
* @since 2006-2-2 Z ?ATWCa
* @version 1.0 `69xR[f
*/ u~!Pzz3"
public class MergeSort implements SortUtil.Sort{ \Hu?K\SWs
?[.g~DK,
/* (non-Javadoc) O`_]n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wS [k}
*/ 1i#U&
public void sort(int[] data) { M(:_(4~
int[] temp=new int[data.length]; AgWG4C=
mergeSort(data,temp,0,data.length-1); t'DIKug&
} >+%p}l:<\
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private void mergeSort(int[] data,int[] temp,int l,int r){ sUZ2A1J}
int mid=(l+r)/2;
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if(l==r) return ; PI)uBA;
mergeSort(data,temp,l,mid); BPu>_$C
mergeSort(data,temp,mid+1,r); n>YgL}YZ?
for(int i=l;i<=r;i++){ KssIoP
temp=data; P u}PE-b
} 7'7o^>
!
int i1=l; }<q=Zq+
int i2=mid+1; lWFm>DiLY
for(int cur=l;cur<=r;cur++){ 3V/f-l]X/
if(i1==mid+1) ^t[br6G
data[cur]=temp[i2++]; 2\#~%D>[
else if(i2>r) 5 HN,y
data[cur]=temp[i1++]; T'7x,8&2|
else if(temp[i1] data[cur]=temp[i1++]; R7Ns5s3X
else N8Un42
data[cur]=temp[i2++]; `nL^]i
} S/6I9zOP
} XRn+6fn|
a61?G!]
} R/&C}6Gn
}S9uh-j6l
改进后的归并排序: zU#
OjvNk
KvEZbf3f
package org.rut.util.algorithm.support; Ifj%" RI
t`0(5v
import org.rut.util.algorithm.SortUtil; ^ |>)H
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/** R[2h!.O8
* @author treeroot `4"&_ltD
* @since 2006-2-2 d-"[-+)-
* @version 1.0 y9Q"3LLic`
*/ Rp.FG
public class ImprovedMergeSort implements SortUtil.Sort { F:-6Htmj
;W!hl<``d*
private static final int THRESHOLD = 10; !Op18hP$
gC/-7/}
/* fG /wU$B
* (non-Javadoc) eS"sd^;R
* Ay\!ohIS3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Mp^U)S+
*/ nHB`<B
public void sort(int[] data) { #J4,mFMr
int[] temp=new int[data.length]; "#`c\JuR]
mergeSort(data,temp,0,data.length-1); }q~xr3#
} MP`WU} 2
}u~r.=
private void mergeSort(int[] data, int[] temp, int l, int r) { y{\(|j
int i, j, k; }{e7wqS$&,
int mid = (l + r) / 2; +isaqfy/
if (l == r) ]TKM.[[
return; kN$L8U8f
if ((mid - l) >= THRESHOLD) H @8 ;6D
mergeSort(data, temp, l, mid); o#F0 3
else 2@f E!
insertSort(data, l, mid - l + 1); 3WF6bJN
if ((r - mid) > THRESHOLD) Q"H1(kG|
mergeSort(data, temp, mid + 1, r); |p+ xM
else W$Zc;KRz$0
insertSort(data, mid + 1, r - mid); LL=nMoS
Jx= v6==7
for (i = l; i <= mid; i++) { h2edA#bub
temp = data; o8S)8_3
} 610hw376B
for (j = 1; j <= r - mid; j++) { oNBYJ]t
temp[r - j + 1] = data[j + mid]; g/m%A2M&aH
} ,h$j%->U
int a = temp[l]; 3mM.#2=@>
int b = temp[r]; atWAhN
for (i = l, j = r, k = l; k <= r; k++) { dDla?)F
if (a < b) { w~=@+U$f
data[k] = temp[i++]; t2vo;,^euL
a = temp; Ic&Jhw;]z
} else { #-u?+Nk/
data[k] = temp[j--]; S#,
E)h/
b = temp[j]; f<G:}I
} =9vmRh?8
} ~0@+8%^>;
} T1r^.;I:
Fh$Xcz~i
/** ^!>o5Y)
* @param data kT6EHuB
* @param l })}-K7v1+
* @param i WD5ulm?91|
*/ T Jp0^&Q
private void insertSort(int[] data, int start, int len) { :j0r~*z-
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); *S4*FH;8
} {pNf&'
} 9}6^5f?|
} 2*1s(Jro
} G#A& Y$
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堆排序: K%"cVqb2V
0UT2sM$
package org.rut.util.algorithm.support; y:8*!}fR
.J3Dk=/
import org.rut.util.algorithm.SortUtil; a<K@rgQ
Px))O&w{
/** A">A@`}
* @author treeroot -!]dU`:(X
* @since 2006-2-2 nY<hfqof
* @version 1.0 r-a/vx#
*/ .v:K`y;f\(
public class HeapSort implements SortUtil.Sort{ N;6WfdA-
sx0:g?F3j
/* (non-Javadoc) 4!dN^;Cb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1(**JTe
*/ +}@HtjM
public void sort(int[] data) { VJeN
m3WNb
MaxHeap h=new MaxHeap(); Y+tXWN"8
h.init(data); =N zA2td
for(int i=0;i h.remove(); m,U`hPJ
System.arraycopy(h.queue,1,data,0,data.length); @"#W\m8
} 6"W~%FSJX
43Yav+G(+
private static class MaxHeap{ 'L2M
W
}$ Am;%?p
void init(int[] data){ 6Hn3
this.queue=new int[data.length+1]; !%?X% @9
for(int i=0;i queue[++size]=data; WeTs va+
fixUp(size); -)tu$W*
} r='"X#CmV/
} dZ7+Iw;m
pU*dE
private int size=0; ,]'?Gd
ZAPT5
private int[] queue; Hs+VA$$*
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,?
public int get() { [a*m9F\ ,
return queue[1]; cFoDR
} ^V~rS8]gj
?1(' s0s\,
public void remove() { <Dw`Ur^ X5
SortUtil.swap(queue,1,size--); !RnO{FL
fixDown(1); p_jDnb#
} !ldb_*)h
file://fixdown 451r!U1Z
private void fixDown(int k) { 4l$(#NB<
int j; J..>ApX
while ((j = k << 1) <= size) { u5EHzoq
if (j < size %26amp;%26amp; queue[j] j++;
2Ek6YNx
if (queue[k]>queue[j]) file://不用交换 ?s("@dz_
break; v3+\Aq
SortUtil.swap(queue,j,k); <m80e),~
k = j; _n(NPFV
} }xHoitOD
} H\2+cAFN#
private void fixUp(int k) { % zs 1v]
while (k > 1) { ` =!&9o
int j = k >> 1; z$E+xZ
if (queue[j]>queue[k]) pI
|;
break; ]}cai1
SortUtil.swap(queue,j,k); })|+tZ
k = j; d9[*&[2J|
} n}qHt0N
} KD^>Vv#
]+W+8)f1M
} !p1OBS|
Gv}*Tw$
} Pt?]JJxl-
DEaO=p|
SortUtil: J56+eC(
B3'qmi<
package org.rut.util.algorithm; @xW)&d\'
,ORZtj
import org.rut.util.algorithm.support.BubbleSort; &2{h]V6
import org.rut.util.algorithm.support.HeapSort; -L6 rXQV@j
import org.rut.util.algorithm.support.ImprovedMergeSort; c@:r\]
import org.rut.util.algorithm.support.ImprovedQuickSort; LF0gy3
import org.rut.util.algorithm.support.InsertSort; sD.bBz
import org.rut.util.algorithm.support.MergeSort; I -i)D
import org.rut.util.algorithm.support.QuickSort; })Rmu."\
import org.rut.util.algorithm.support.SelectionSort; Roy0?6O
import org.rut.util.algorithm.support.ShellSort; O k_I}X
EW$ Je
/** =8j;!7p
* @author treeroot pc5-'; n
* @since 2006-2-2 SHPaSq'&N
* @version 1.0 Rs:<'A
*/ G.O0*E2V
public class SortUtil { 0,(U_+n
public final static int INSERT = 1; -@G|i$!
public final static int BUBBLE = 2; ]6</{b
public final static int SELECTION = 3; [syuoJ
public final static int SHELL = 4; 0b=OK0n!%
public final static int QUICK = 5; 3Qe:d_
public final static int IMPROVED_QUICK = 6; >/EmC3?b!
public final static int MERGE = 7; _h7+.U=
public final static int IMPROVED_MERGE = 8; dZRz'd
public final static int HEAP = 9; f
5_n2
,-t3gc1~X
public static void sort(int[] data) { J
/'woc
sort(data, IMPROVED_QUICK); q,2]]K7y
} `|i #)
private static String[] name={ ` &|Rs
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" z?h\7
R
}; J}TS-j0
;k/y[ x}
private static Sort[] impl=new Sort[]{ "tUXYY
new InsertSort(), 1^R @X
new BubbleSort(), tsU.c"^n
new SelectionSort(), //:.k#}~B
new ShellSort(), ji`N1e,l
new QuickSort(), Vy{=Y(cpF2
new ImprovedQuickSort(), `ItMn&P
new MergeSort(), U}6'_ PRQ
new ImprovedMergeSort(), AShJtxxa
new HeapSort() tz&=v,_jc
}; \^?BC;s^C
*4r
1g+0
public static String toString(int algorithm){ 9">}@1k
return name[algorithm-1]; WYwsTsG{_
} Et%s,zeA{2
B>t$Z5Q^X
public static void sort(int[] data, int algorithm) { O:RPH{D
impl[algorithm-1].sort(data); G[r_|-^S
} OAR1u}
_+%-WFS|
public static interface Sort { xg'z_W
public void sort(int[] data); D<#+ R"
} `.Y["f
1B
Mvrc[s+o
public static void swap(int[] data, int i, int j) { F^IYx~:
int temp = data; C!B2.:ja
data = data[j]; vML01SAi
data[j] = temp; f$iv+7<B^
} P
5m{}@g
} A"\kdxC