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。 Up%XBA
插入排序: [<i3l'V/[
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package org.rut.util.algorithm.support; M>=@Z*u/+
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import org.rut.util.algorithm.SortUtil; :kcqf,7
/** g:RS7od=,
* @author treeroot 6v{&, q
* @since 2006-2-2 o.Ww.F
* @version 1.0 QN;5+p[N
*/ Mm,\e6#*
public class InsertSort implements SortUtil.Sort{ M5RN Z%
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/* (non-Javadoc) #<Y3*^~5d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =~D[M)UO|
*/ A ___|
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public void sort(int[] data) { Ma\%uEgTD
int temp; m^BXLG:b
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5vD\?,f E
} -`ljKp
} EyR/
} r=.@APZB
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} kReZch}
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冒泡排序: jSBz),.XU}
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package org.rut.util.algorithm.support; 512p\x@
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import org.rut.util.algorithm.SortUtil; % dFz[b
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/** uUS~"\`fk
* @author treeroot %npLgCF
* @since 2006-2-2 ({Yfsf,
* @version 1.0 OS%[SHs
*/ %gn@B2z
public class BubbleSort implements SortUtil.Sort{ Xqe Qj}2kA
cl#XiyK>
/* (non-Javadoc) @Wd(>*"zw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5 jK|
*/ (eb65F@ P
public void sort(int[] data) { z( ^?xv
int temp; CUTjRWQ
for(int i=0;i for(int j=data.length-1;j>i;j--){ M'|[:I.V
if(data[j] SortUtil.swap(data,j,j-1); 8MW-JZ
} 5o{U$
} RJ3uu NK7
} BbFLT@W4
} QDJ#zMxFD
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} U*N{H$ACuR
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选择排序: nQ'NS
x]Nx,tt
package org.rut.util.algorithm.support; 2OI 0B\
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import org.rut.util.algorithm.SortUtil; Uun0FCA>
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/** BGVnL}0
* @author treeroot GLub5GrxR
* @since 2006-2-2 X9c<g;
* @version 1.0 731RqUR
*/ >8{{H"$;(
public class SelectionSort implements SortUtil.Sort { bCTN^
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/* X:f5t` ;
* (non-Javadoc) %d-WQwJ
* (-1{W^(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Mx0~^l
*/ \ eba9i^
public void sort(int[] data) { a{^2c!
int temp; [ Ous|a[)o
for (int i = 0; i < data.length; i++) { 3J8>r|u;1'
int lowIndex = i; ADxje%!1O
for (int j = data.length - 1; j > i; j--) { 08AD~^^
if (data[j] < data[lowIndex]) { TUGD!b{
lowIndex = j; 82)=#ye_P
} MowAM+?^}
} 7CSn79E
SortUtil.swap(data,i,lowIndex); ,6^Xn=o #
} :Eh}]_
} Qa9@Q$
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} O.Te"=^"F
lV3k4i RH
Shell排序: P1L+Vnfu
D@5h$m5
package org.rut.util.algorithm.support; w|I5x}ZFG
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import org.rut.util.algorithm.SortUtil; YVHf-uP
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/** aox@- jyr
* @author treeroot TWRnty-C
* @since 2006-2-2 u"T9w]Z\
* @version 1.0 <tO@dI$~>
*/ 1DU
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public class ShellSort implements SortUtil.Sort{ GM8>u O
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/* (non-Javadoc) 9 M?UPE
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5D-as9k*
*/ *Vb#@O!
public void sort(int[] data) { 2ZbSdaM=
for(int i=data.length/2;i>2;i/=2){ :%28*fl
for(int j=0;j insertSort(data,j,i); jL)Y'
}
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} 8.%wnH
insertSort(data,0,1); G.N`
} f `b6E J
iz [IK%K
/** |"b|Q
* @param data M/xm6
* @param j WcXNc`x
* @param i ,\\=f#c=
*/ <)_#6)z:
private void insertSort(int[] data, int start, int inc) { @yQ1F>
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int temp; xU{0rM"
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); dB&<P[$+8
} FKe/xz
} ,T^A?t
} HsRoiqo
kE+fdr\ T
} ?#doH,
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快速排序: iB~dO @
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package org.rut.util.algorithm.support; QYj 4D
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import org.rut.util.algorithm.SortUtil; 1o_Zw.
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/** ]$.w
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* @author treeroot ^[+2P?^K
* @since 2006-2-2 "9~KVILlLu
* @version 1.0 cYOcl-*af
*/ [%/B"wTt
public class QuickSort implements SortUtil.Sort{ N!tNRMTi
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/* (non-Javadoc) #K` [XA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JvCy&xrE;
*/ [H$kVQC
public void sort(int[] data) { BHkicb ?
quickSort(data,0,data.length-1); @C('kUX~!
} 5ff5M=M
private void quickSort(int[] data,int i,int j){ 1} _<q k9
int pivotIndex=(i+j)/2; jCx*{TO
file://swap 1xsJz^%V
SortUtil.swap(data,pivotIndex,j); ;<cCT!A
"}[ ]R
int k=partition(data,i-1,j,data[j]); a>y e
SortUtil.swap(data,k,j); |1<B(iB'{/
if((k-i)>1) quickSort(data,i,k-1);
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/
if((j-k)>1) quickSort(data,k+1,j); g<w1d{Td
d;3f80Kd*
} ^"uD:f)
/** 5yW}#W>
* @param data l r~>!O
* @param i >r4BI}8SK<
* @param j u2':~h?l
* @return c*(=Glzn
*/ rc`I l{~k
private int partition(int[] data, int l, int r,int pivot) { !0Ak)Q]e'
do{ A-^B?E
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); hsK(09:J
SortUtil.swap(data,l,r); ZXbq5p_
} b+dmJ]c
while(l SortUtil.swap(data,l,r); q}E'x/s2m
return l; h9nh9a(2
} IG%x(\V-e
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} 0N6 X;M{zh
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改进后的快速排序: SM<qb0
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package org.rut.util.algorithm.support; ep
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import org.rut.util.algorithm.SortUtil; S4E@wLi
@}%kSn5y:
/** Vrp]YRL`
* @author treeroot D [v22 5
* @since 2006-2-2 mndEB!b
* @version 1.0 x;4m@)Mu
*/ g ZES}]N
public class ImprovedQuickSort implements SortUtil.Sort { YR)^F|G
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private static int MAX_STACK_SIZE=4096; N>@.(f&w
private static int THRESHOLD=10; +\vN#xDz
/* (non-Javadoc) $ Fy)+<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0h('@Hb.K#
*/ "/hLZl
public void sort(int[] data) { +~;#!I@Di
int[] stack=new int[MAX_STACK_SIZE]; R^K:hKQ
k6;pi=sYNW
int top=-1; tg ~7^(s
int pivot; LsK
fCB}
int pivotIndex,l,r; m
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"nNT9
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stack[++top]=0; (d[JMO^@8
stack[++top]=data.length-1; E/d\ebX|
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while(top>0){ fKs3H?|
int j=stack[top--]; CZCVC (/u
int i=stack[top--]; grDz7\i:
#hEU)G'$+
pivotIndex=(i+j)/2; En8L1$_
pivot=data[pivotIndex]; JgldC[|7
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SortUtil.swap(data,pivotIndex,j); D6P/39}W
H
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file://partition hSk
l=i-1; n+'s9
r=j; t.7_7`bin~
do{ tkHUX!Ow;
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); +C4NhA2
SortUtil.swap(data,l,r); q(5
} Wk/Il^YG
while(l SortUtil.swap(data,l,r); h*mKS -TC
SortUtil.swap(data,l,j); z9zo5Xc=
49B6|!&I
if((l-i)>THRESHOLD){ tkdyR1-
stack[++top]=i; 3TKl
stack[++top]=l-1; EmV ZqW
} %bhFl,tL
if((j-l)>THRESHOLD){ >>>MTV f
stack[++top]=l+1; &Qv%~dvW
stack[++top]=j; sDy~<$l?
} cdfnM% `>\
MIc(B_q
} zOL*XZ0c
file://new InsertSort().sort(data); 8w3Wy<}y
insertSort(data); TyaK_XW
} j<vU[J+gx~
/** 5=.mg6:
* @param data 3^F1 hCB
*/ H4e2#]*i7
private void insertSort(int[] data) { Q,\S3>1n
int temp; 42
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); S^@#%>
} [\"<=lb`
} sO&eV68
[
} h)?Km{u%
j1dz'G}hj
} w8-L2)Q}I
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归并排序: i,$n4
/oU$TaB>(
package org.rut.util.algorithm.support; Ozc9y y!%
ze#ncnMo
import org.rut.util.algorithm.SortUtil; GF*E+/
;
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/** 7+J<N@.d
* @author treeroot zXeBUbVi
* @since 2006-2-2 '\LU 8VC
* @version 1.0 UeSPwY
*/ %VgK::)r
public class MergeSort implements SortUtil.Sort{ d#HN'(2t
+
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/* (non-Javadoc) d|$-l:(J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +PHuQ
*/ _dn*H-5hO
public void sort(int[] data) { !%G;t$U=M
int[] temp=new int[data.length]; ev(E
mergeSort(data,temp,0,data.length-1); z~yLc{M
} ZF;s`K)
r Ww.(l
private void mergeSort(int[] data,int[] temp,int l,int r){ izr
3{y5
int mid=(l+r)/2; :N:e3$c
if(l==r) return ; BKW%/y"
mergeSort(data,temp,l,mid); 4yR X{Bl|
mergeSort(data,temp,mid+1,r); 8)&J oPN
for(int i=l;i<=r;i++){
d>1#|
temp=data; 7e<\11uI]a
} ~ePtK~,dv
int i1=l; _v=zFpR
int i2=mid+1; Z-z(SKL
for(int cur=l;cur<=r;cur++){ &d[%
if(i1==mid+1) 3+:uV
data[cur]=temp[i2++]; 3 _c4+u"6
else if(i2>r) [[8h*[:
data[cur]=temp[i1++]; ig:z[k?
else if(temp[i1] data[cur]=temp[i1++]; \&%y4=y<sE
else v!rOT/I
data[cur]=temp[i2++]; ut9R]01:
} ZvW&%*k=
} O9MBQNwjA
VV=6v;u`
} ]hA]o7k
;5}y7#4C
改进后的归并排序: R~XNF/QMl
I$Fr8R$
package org.rut.util.algorithm.support; /Oa.@53tK6
%'[ pucEF
import org.rut.util.algorithm.SortUtil; %Z#[{yuFs
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/** <e' l"3+9(
* @author treeroot vTYgWR,h
* @since 2006-2-2 29h_oNO
* @version 1.0 3x~AaC.j
*/ ("j*!Dsd
public class ImprovedMergeSort implements SortUtil.Sort { [fXC ;c1
05vu{>
private static final int THRESHOLD = 10; ou'|e "tI
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/* @NJJ
* (non-Javadoc) <<9Y=%C+
* 3 p9LVa
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I}7=\S/@
*/ wi-{&
public void sort(int[] data) { ?anKSGfj
int[] temp=new int[data.length]; +jz%:D
mergeSort(data,temp,0,data.length-1); t M{U6k
} H.:
[#
a
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private void mergeSort(int[] data, int[] temp, int l, int r) { Z~Z+Yt;,9a
int i, j, k;
`_H^k!^
int mid = (l + r) / 2; _<G%
if (l == r) aQhr$aH
return; >d#6qXKAU
if ((mid - l) >= THRESHOLD) } T<oLvS
mergeSort(data, temp, l, mid); pNR69/wGi
else 1`8(O >5
insertSort(data, l, mid - l + 1); oq }Q2[.b
if ((r - mid) > THRESHOLD) vH9Gf
mergeSort(data, temp, mid + 1, r); t>>\U X
else wKs-<b%;
insertSort(data, mid + 1, r - mid); Yo#F ;s7
0_5j(
for (i = l; i <= mid; i++) { 7u7 <"?v=
temp = data; >c:- ;( k
} f:K`MW
for (j = 1; j <= r - mid; j++) { ;
+E@h=?
temp[r - j + 1] = data[j + mid]; #pw=HHq*(
} (-rw]=Qu
int a = temp[l]; -}2e+DyAy
int b = temp[r]; * E3
c--
for (i = l, j = r, k = l; k <= r; k++) { B3|r O
if (a < b) { ]&/KAk
data[k] = temp[i++]; 1)f~OL8o
a = temp; y[@<goT
} else { k/ ZuFTN
data[k] = temp[j--]; 9d!}]+"d42
b = temp[j]; #T8$NZA
} 4$!iw3N(
} ec` $2u
} tpi>$:e
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/** (">gLr
* @param data "ZyWU f
* @param l ~.w Db,*
* @param i wUz)9n 6j
*/ qP0_#l&
private void insertSort(int[] data, int start, int len) { j?n:"@!G/
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ,o)U9<
} Q-GnNT7MB3
} hq^@t6!C\m
} N~An}QX|
} A?xb
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堆排序: A{Q :,S)
+tXOP|X
package org.rut.util.algorithm.support; ihJC)m`Hbl
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import org.rut.util.algorithm.SortUtil; #dgWXO
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/** j\SW~}d9
* @author treeroot cAE.I$T(
* @since 2006-2-2 Y)I8(g}0
* @version 1.0 qm)KO 4
*/ vYNh0)$%F
public class HeapSort implements SortUtil.Sort{ J12ZdC'O
H19CVc\B
/* (non-Javadoc) =Gq
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L){rv)?="
*/ _8'F I_E3
public void sort(int[] data) { P2Ja*!K]
MaxHeap h=new MaxHeap(); vK\;CSk
h.init(data); oGLSk(T&I
for(int i=0;i h.remove(); K>`7f]?H*e
System.arraycopy(h.queue,1,data,0,data.length); )ccdfSe
} 4%I(Z'*Cx
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private static class MaxHeap{ 7^J-5lY3S
GBZx@B[TY
void init(int[] data){ =R^V[zTn_
this.queue=new int[data.length+1]; 4JHFn [%
for(int i=0;i queue[++size]=data; f9FsZD
fixUp(size); hsQrHs'k
} ?eb2T`\0Q
} [-sE:O`yt
[N/[7Q/y
private int size=0; u= K?K
snBC +`-
private int[] queue; <'4DMZ-G
w%1B_PyDg
public int get() { *s6MF{Ds
return queue[1]; pAV}hB
} T@]vjXd <= size) { E$FXs~a
if (j < size %26amp;%26amp; queue[j] j++; &:-`3J-
if (queue[k]>queue[j]) file://不用交换 $s hlNW\
break; zy#E qv
SortUtil.swap(queue,j,k); J|Lk::Ri
k = j; id.o)=
} L$`!~z1
} dxkXt k
private void fixUp(int k) { @Ey(0BxNu
while (k > 1) { MWCP/~>a2
int j = k >> 1; C<6IiF[>%
if (queue[j]>queue[k]) 3Nh;^
break; 0rT-8iJp4P
SortUtil.swap(queue,j,k); {nbD5 ?
k = j; EYUr.#:
} #TUsi,jG
} ~S
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}@OykN
} H+; _fd
sf?D4UdIH
} ;1cX|N=
`ge{KB;*n#
SortUtil: -{ZTp8P>
AdB5D_ Ir
package org.rut.util.algorithm; +gOCl*L
*kxk@(lT?
import org.rut.util.algorithm.support.BubbleSort; 6yF4%Sz9
import org.rut.util.algorithm.support.HeapSort; "_C^Bc
import org.rut.util.algorithm.support.ImprovedMergeSort; yi7-[W}
import org.rut.util.algorithm.support.ImprovedQuickSort; nrA}36 E
import org.rut.util.algorithm.support.InsertSort; -)?~5Z
import org.rut.util.algorithm.support.MergeSort; u9>.x
zYG
import org.rut.util.algorithm.support.QuickSort; "wxs
import org.rut.util.algorithm.support.SelectionSort; q]5"V>D \
import org.rut.util.algorithm.support.ShellSort; FI~)ZhE)]
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/** jjz<V(Sk
* @author treeroot RH. oo&
* @since 2006-2-2
mYb8
* @version 1.0 jo<[|ZD
*/ 9\Mesf1$o
public class SortUtil { iYv6B6o/99
public final static int INSERT = 1; P7E}^y`e
public final static int BUBBLE = 2; [(`T*c.#.X
public final static int SELECTION = 3; d?&?$qf[
public final static int SHELL = 4; L"tj DAV
public final static int QUICK = 5; ^?toTU
public final static int IMPROVED_QUICK = 6; _q=$L
eO5
public final static int MERGE = 7; c?eV8h1G
public final static int IMPROVED_MERGE = 8; \GbT^!dj
public final static int HEAP = 9; s+^o[R
T3
>lyUr*4PX
public static void sort(int[] data) { mb?DnP,z
sort(data, IMPROVED_QUICK); i2$U##-ro]
} d Z"bc]z{
private static String[] name={ )u]<8
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Tc\^=e^N?
}; S_6`.@B}
7esG$sVj(
private static Sort[] impl=new Sort[]{ tZU"Ud
new InsertSort(), 2X)E3V/*
new BubbleSort(), Z[AJat@H
new SelectionSort(), E] t:_v
new ShellSort(), J(M0t~RZ
new QuickSort(), ez86+
new ImprovedQuickSort(), f8N
new MergeSort(), xvjHGgWSxc
new ImprovedMergeSort(), Roy`HU
;0a
new HeapSort() 8+
B. x
}; &N*S
$1\<>sJH
public static String toString(int algorithm){ \p@,+ -gX
return name[algorithm-1]; ahS*YeS7
} }PyAmh$@
JeUFCWm
public static void sort(int[] data, int algorithm) { aiw~4ix
impl[algorithm-1].sort(data); nf/iZ &
} %nOBs ln
68)z`JI|<)
public static interface Sort { KzeA+PI
public void sort(int[] data); (LRv c!`"
} jfqWcX.X=
O`t ]#
public static void swap(int[] data, int i, int j) { *
2T&