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。 elXY*nt8h
插入排序: EKf"e*|(L
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package org.rut.util.algorithm.support; Mq]~Ka3q7
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import org.rut.util.algorithm.SortUtil; yB(^t`)}N
/** ]c8lZO>
* @author treeroot q%#dx4z&
* @since 2006-2-2 3/o-\wWO
* @version 1.0 sj003jeko
*/ rixNz@p'%
public class InsertSort implements SortUtil.Sort{ ~q#UH'=%
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/* (non-Javadoc) @Y*ONnl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3+"z
*/ 3.B|uN
public void sort(int[] data) { z=vfP%
int temp; d$g-u8
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \(jSkrrD
} IZeWswz
} GEy^*, d
} 9>d$a2nc
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} dkJ+*L5
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冒泡排序: #sy)-xM
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package org.rut.util.algorithm.support; @rkNx@[~
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import org.rut.util.algorithm.SortUtil; K~AQ) ]pJI
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/** +LV~%?W
* @author treeroot ZeF PwW
* @since 2006-2-2 #Zk6
* @version 1.0 %0@Jm)K^
*/ L~SM#?z:ue
public class BubbleSort implements SortUtil.Sort{ HS]|s':
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/* (non-Javadoc) f$9V_j-K+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?%(8RQ
*/ Q/r9r*>z
public void sort(int[] data) { OT{wqNI
int temp; ;OTD1=
for(int i=0;i for(int j=data.length-1;j>i;j--){ ZffK];D
if(data[j] SortUtil.swap(data,j,j-1); 4&~1|B{Z
} Zz=+?L
}
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} Uaj8}7v
} *^ncb,1+i
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} !6\{q
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选择排序: N|?"=4Z?
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package org.rut.util.algorithm.support; jTaEaX8+
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import org.rut.util.algorithm.SortUtil; ([iMOE[D3
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/** >%x7-->IB
* @author treeroot ] 7_ f'M1F
* @since 2006-2-2 "zJ1vIZY
* @version 1.0 _/MHi-]/.
*/ PYPs64kNC]
public class SelectionSort implements SortUtil.Sort { !]7Z),s
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/* kJq8"Klg
* (non-Javadoc) L;H(I@p(e
* 7NV1w*>/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L|EvI.f
*/ 4!,x3H'
public void sort(int[] data) { O8"kIDr-
int temp; L+7L0LbNU
for (int i = 0; i < data.length; i++) {
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int lowIndex = i; Ey A}
for (int j = data.length - 1; j > i; j--) { uj,YCJ8UZs
if (data[j] < data[lowIndex]) { *KN ' 0Z@W
lowIndex = j; ZGf R:a)wc
} 3|8\,fO?
} Z\D!'FX
SortUtil.swap(data,i,lowIndex); LJ`*&J
} R2yiExw<
} (e6JI]tz{
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} i[sHPEml(5
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Shell排序: _@;t^j+l
K[PH#dF5,x
package org.rut.util.algorithm.support; UUc{1"z{
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import org.rut.util.algorithm.SortUtil; _Je<_pl!D
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/** &eKnLGKD
* @author treeroot _so\h.lt
* @since 2006-2-2 v8W .84e-
* @version 1.0 @
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*/ [KMW*pA7
public class ShellSort implements SortUtil.Sort{ *,q ?mO
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/* (non-Javadoc) NK;%c-r0v7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~CCRs7V/L
*/ 1p=^I'#
public void sort(int[] data) { AX,V*
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for(int i=data.length/2;i>2;i/=2){ 3Cmbt_WV
for(int j=0;j insertSort(data,j,i); Z5/^pyc
} <]xGd!x$
} _>+!&_h
insertSort(data,0,1); q@8Jc[\d
} N]udZhkn
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/** xCGa3 X
* @param data jU.z{(s
* @param j d*$$E
* @param i /#lhRNX
*/ g|ewc'y
private void insertSort(int[] data, int start, int inc) { jI%v[]V
int temp; #N9^C@
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); k#X~+}N^
} f]Z%,'1^
} n4\UoKq
} L"{qF<@V7&
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} kk#%x#L[
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快速排序: nb
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package org.rut.util.algorithm.support; "TEF
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import org.rut.util.algorithm.SortUtil; Yci>'$tQ
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/** F3+
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* @author treeroot 2-=Ov@y2k!
* @since 2006-2-2 |`vwykhezO
* @version 1.0 7niZ`doBA
*/ >L[n4x\
public class QuickSort implements SortUtil.Sort{ 3}R}|Ha
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/* (non-Javadoc) v6=pV4k9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M|8vP53=q
*/ 4FrP%|%E~
public void sort(int[] data) { 8 *o*?1.
quickSort(data,0,data.length-1); GPV=(}z
} AB(WK9o
private void quickSort(int[] data,int i,int j){ =2v/f_
int pivotIndex=(i+j)/2; z7TMg^9#
file://swap Io_bS+
SortUtil.swap(data,pivotIndex,j); hK^(Y
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int k=partition(data,i-1,j,data[j]); v2eLH:6
SortUtil.swap(data,k,j); :jL>sGvBv
if((k-i)>1) quickSort(data,i,k-1); "?9rJx$
if((j-k)>1) quickSort(data,k+1,j); ;B*im
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} 0C!f/EZK
/** 0PEg
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* @param data |pLx,#n
* @param i (~S=DFsP
* @param j lRA=IRQ]
* @return s1
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*/ ((0nJJjz
private int partition(int[] data, int l, int r,int pivot) { 0b=1Ce+0q
do{ 3Ye{a<ckK
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); r~rft w
SortUtil.swap(data,l,r); 7m.#No>^
} yuP1*QJ%
while(l SortUtil.swap(data,l,r); 1N\/61+aA
return l; l9{}nz
} P=3mLz-
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} ,f*Q3 S/I
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改进后的快速排序: 2F7( Y)
P^'TI[\L9
package org.rut.util.algorithm.support; :/A7Z<u,
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import org.rut.util.algorithm.SortUtil; a+mrsyM
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/** Cb}I-GtO
* @author treeroot ehTrjb3k
* @since 2006-2-2 KC+jHk
* @version 1.0 '
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*/ Gxh r0'
public class ImprovedQuickSort implements SortUtil.Sort { _v6x3 Z
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private static int MAX_STACK_SIZE=4096; E P3Vz8^
private static int THRESHOLD=10; b-8}TTL>
/* (non-Javadoc) G0%},Q/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >U\1*F,Om,
*/ ]`eP"U{
public void sort(int[] data) { 33},lNS|
int[] stack=new int[MAX_STACK_SIZE]; vKO/hZBh
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int top=-1; HPryq )z
int pivot; <%4M\n
int pivotIndex,l,r; mNA=<O;i)'
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stack[++top]=0; J7;8
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stack[++top]=data.length-1; <uG6!P
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while(top>0){ )L/0X40<.
int j=stack[top--]; ;kDUQw
int i=stack[top--]; \>$3'i=mQ
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pivotIndex=(i+j)/2; v<3KxP'a
pivot=data[pivotIndex]; =h\unQ1T
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SortUtil.swap(data,pivotIndex,j); c/DK31K
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file://partition zm!M'|~@7
l=i-1; 4`e[gvh
r=j; q6'Q-e)
do{ !8e;3W
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); :%-w/QwTR
SortUtil.swap(data,l,r); ~pT1,1
} }el7@Gv
while(l SortUtil.swap(data,l,r); Xj9\:M-
SortUtil.swap(data,l,j); a[_IG-l|i4
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if((l-i)>THRESHOLD){ uG$*DeZti
stack[++top]=i; 4mHk,Dd9,
stack[++top]=l-1; $\+x7"pI
} + 70x0z2
if((j-l)>THRESHOLD){ h+R26lI1x
stack[++top]=l+1; Xf#+^cQ
stack[++top]=j;
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} 9.%t9RM^
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} W)Ct*I^
file://new InsertSort().sort(data); UgLFU#
insertSort(data); A.vf)hO
} PI.Zd1r
/** QWc,JCu
* @param data xa'^:H $X
*/ *Z$W"JP
private void insertSort(int[] data) { yJ/YK
int temp; |}? H$d
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); +
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} sW-0G$,|
} <Umr2Vw-
} K491QXG
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} ;f~fGsH}e'
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归并排序: I7wR[&L885
jlA6~n
package org.rut.util.algorithm.support; [Tl66Eyl
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import org.rut.util.algorithm.SortUtil; ~N%+ZXh&E
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/** g>@a
* @author treeroot bg!(B<!X
* @since 2006-2-2 x6)qs-
* @version 1.0 H:|.e)$i
*/ k`;d_eW
public class MergeSort implements SortUtil.Sort{ '?jsH+j+
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/* (non-Javadoc) XzPOqZ`Nv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F$-f j "jC
*/ t.+)g-X
public void sort(int[] data) { &~Y%0&F,&
int[] temp=new int[data.length]; qm"SN<2S*
mergeSort(data,temp,0,data.length-1); ;mYZ@g%e
} ^J&D)&"j
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private void mergeSort(int[] data,int[] temp,int l,int r){ C1fd@6
int mid=(l+r)/2; b}DC|?~M
if(l==r) return ; gW<6dP'v
mergeSort(data,temp,l,mid); otdRz<C
mergeSort(data,temp,mid+1,r); z4 <_>)p
for(int i=l;i<=r;i++){ Oi'y0S~g
temp=data; 0hhxTOp
} Ab]tLz|Z
int i1=l; 2i0;b|-=
int i2=mid+1; !u'xdV+bf
for(int cur=l;cur<=r;cur++){ "F}dZ
if(i1==mid+1) z#Fel/L`O
data[cur]=temp[i2++]; q 'd]
else if(i2>r) ]ag{sU@#
data[cur]=temp[i1++]; MhR`
else if(temp[i1] data[cur]=temp[i1++]; s1E 0atT
else tfe]=_U
data[cur]=temp[i2++]; F3qCtx*N
} zrqI^i"c
} S]ayH$w\Q
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} =tbfBK+
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改进后的归并排序: .^M#BAt2
R:+'"dBge
package org.rut.util.algorithm.support; Ge/K.]>i
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import org.rut.util.algorithm.SortUtil; 8R%<~fq r
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/** mI5J]hk
* @author treeroot *RxJ8.G
* @since 2006-2-2 1a/C(4_k
* @version 1.0 2Mk;r*FT
*/ 2F>Y{3&
public class ImprovedMergeSort implements SortUtil.Sort { [|ZFei)r
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private static final int THRESHOLD = 10; \I:27:iAL
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/* _7\`xU
* (non-Javadoc) Y<|JhqOXK
* cE:s\hG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ufl\
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*/ {ZrlbDQX
public void sort(int[] data) { I5q$QQK
int[] temp=new int[data.length]; >I0;MNX
mergeSort(data,temp,0,data.length-1); %VFoK-a
} .Sn{a}XP4
JH{/0x#+
private void mergeSort(int[] data, int[] temp, int l, int r) { "5L?RkFi\
int i, j, k; S9Oz5_x
int mid = (l + r) / 2; Dm{Xd+Y
if (l == r) o5p{ O>D[z
return; G"`
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if ((mid - l) >= THRESHOLD) -Uy)=]Zae
mergeSort(data, temp, l, mid); }3A~ek#*~
else y~\ujp_5w
insertSort(data, l, mid - l + 1); qF4tjza;k
if ((r - mid) > THRESHOLD) "d:rPJT)(@
mergeSort(data, temp, mid + 1, r); %-yzU/`JF
else ; ?f+
insertSort(data, mid + 1, r - mid); o S= !6h
pJvPEKN
for (i = l; i <= mid; i++) { o_`6oC"s
temp = data; ^7wqb'xg
} 6FNGyvBU
for (j = 1; j <= r - mid; j++) { 'x{oAtCP9
temp[r - j + 1] = data[j + mid]; `@
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} m=sEB8P
int a = temp[l]; ?[d4HKs
int b = temp[r]; jQ;/=9
for (i = l, j = r, k = l; k <= r; k++) { -'g>i
if (a < b) { w")
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data[k] = temp[i++]; )-_^vB
a = temp; ~;3#MAG
} else { IK\~0L;ozE
data[k] = temp[j--]; =X?fA,
b = temp[j]; U!o7Nw@z
} 7H)$NG<U$
} ,eBC]4)B6
} pe
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/** u0Wt"d-=
* @param data <HoCt8>U
* @param l zI4rAsysL
* @param i o[cOL^Xd1
*/ La )M
private void insertSort(int[] data, int start, int len) {
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for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); #0r~/gW
} Rb L?(
} ,Q56A#Y\
} r@3-vLI!u
} U}5fjY
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堆排序: JY2<ECO
`jGeS[FhR
package org.rut.util.algorithm.support; F*[E28ia&
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import org.rut.util.algorithm.SortUtil; EjLq&QR.
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/** WVRIq'
* @author treeroot >t3_]n1e
* @since 2006-2-2 VKl,m ;&