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。
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插入排序: ti%RE:*
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package org.rut.util.algorithm.support; .?QYqGcG
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import org.rut.util.algorithm.SortUtil; 8Vj'&UY
/** Y2 J-`o$5
* @author treeroot TbNH{w|p
* @since 2006-2-2 4LB8p7$|a3
* @version 1.0 DZC@^k \E
*/ 6uo;4}0
public class InsertSort implements SortUtil.Sort{ EV{Ys}3M
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/* (non-Javadoc) }kr?+)wB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U7D!w$4
*/ qT(6T P
public void sort(int[] data) { lD3nz<p
int temp; rq8 d}wj
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {LF4_9 =
} =s4(Y
} ?hkOL$v<9}
} dV'EiNpf
RhHm[aN
} \*e\MOp6
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冒泡排序: 9|}Pf_5]%[
`2@.%s1o=
package org.rut.util.algorithm.support; i}DS+~8v
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import org.rut.util.algorithm.SortUtil; rjK`t_(=
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/** *$vH]>)p
* @author treeroot \$wkr
* @since 2006-2-2 C{zp8 A(Dh
* @version 1.0 8\lh'8
*/ P$z_A8}
public class BubbleSort implements SortUtil.Sort{ _{cCo:
2Ckx.m &
/* (non-Javadoc) @GFB{ ;=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~pQN#C)CO>
*/ [^5;XD:%&l
public void sort(int[] data) { ?qaWt/m
int temp; Y/FPkH4
for(int i=0;i for(int j=data.length-1;j>i;j--){ :h{uZ,#Gi
if(data[j] SortUtil.swap(data,j,j-1); [Vo5$w
} Zj_2>A
} c;$4}U4
} !=YKfzE
} _VKI@
A#=TR_@:
} cg MF?;V
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选择排序: h)HEexyRg
Kp`{-dUf
package org.rut.util.algorithm.support; kUf i
U-I,Q+[C[^
import org.rut.util.algorithm.SortUtil; @x}"aJgl
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/** 43PLURay
* @author treeroot -!j6&
* @since 2006-2-2 vQljxRtW
* @version 1.0 R c+olJ^5
*/ C!VhVOy>d
public class SelectionSort implements SortUtil.Sort { gc.Lh~
l_^SU8i57
/* t*gZcw5 r
* (non-Javadoc) $a M5jH<
* \Oeo"|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ek_5% n
*/ E~%n-A
public void sort(int[] data) { s<s}6|Z
int temp; K92j BR
for (int i = 0; i < data.length; i++) { 51jgx,-|$
int lowIndex = i; Dr3_MWJ+
for (int j = data.length - 1; j > i; j--) { 8s1nE_3
if (data[j] < data[lowIndex]) { $Nu{c;7"
lowIndex = j; .AfZ5s]/F
} 1M]=Nv
} 'ToE Y3
SortUtil.swap(data,i,lowIndex); D=0YLQ*rP
} 3p0v
} .kT]^rv
;
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} +%JBr+1#\
3p%e_?
Shell排序: Bf utmI
7Sx|n}a-3
package org.rut.util.algorithm.support; -S'KxC
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import org.rut.util.algorithm.SortUtil; xXe3E&
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/** FK _ ZE>
* @author treeroot >,e^}K}C
* @since 2006-2-2 %{u@{uG0'3
* @version 1.0 n{tc{LII/
*/ $1yO Zp5
public class ShellSort implements SortUtil.Sort{ 8q^}AT<C
2n<Mu Q]
/* (non-Javadoc) fVbjU1N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >y3FU1w5d
*/ b] 5weS-<
public void sort(int[] data) { 7Ak<e tHD
for(int i=data.length/2;i>2;i/=2){ F@BpAl
for(int j=0;j insertSort(data,j,i); ~gDYb#p
} YX$(Sc3.6
} f3K-X1`]'U
insertSort(data,0,1); O~3
A>j
} L&p R#
4ud(5m;Rle
/** Sdu\4;(
* @param data 2W,9HSu8
* @param j `3;EJDEdbi
* @param i 4^F[Gp?
*/ F%w!I 9
private void insertSort(int[] data, int start, int inc) { .j]tzX
int temp; b>ai"!
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); GA^hev
} B)0/kY7c
} .5|[gBK
} IZZAR
oD2:19M@p
} -S sgW
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快速排序: nBy-/BU&
gIB3DuUo
package org.rut.util.algorithm.support; yE:y[k0E
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import org.rut.util.algorithm.SortUtil; .?Eb{W)^br
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/** ha
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* @author treeroot x3+
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* @since 2006-2-2 (?z?/4>7<
* @version 1.0 vjEDd`jYZ
*/ S;~eI8gQ"
public class QuickSort implements SortUtil.Sort{ NI?O
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/* (non-Javadoc) ,/f\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kWr1>})'
*/ T?8BAxC?K
public void sort(int[] data) { ]#o;`5'
quickSort(data,0,data.length-1); ;4 ;gaf
} "Bd-h|J
private void quickSort(int[] data,int i,int j){ yYz{*hq
int pivotIndex=(i+j)/2; OyO<A3
file://swap v=k+MvX
SortUtil.swap(data,pivotIndex,j); ,DFN:uf=l
AiHU*dp6
int k=partition(data,i-1,j,data[j]); <*5S7)]BP
SortUtil.swap(data,k,j); pwo$qs(p
if((k-i)>1) quickSort(data,i,k-1);
+SFFwjI
if((j-k)>1) quickSort(data,k+1,j); PQaTS*0SXJ
ZqclmCi
} a6Vfd&
/** $ }/tlA&e
* @param data *7AB0y0k
* @param i byM%D$R
* @param j 5{=+S]
* @return vHi%UaD-y
*/ P'KA-4!
private int partition(int[] data, int l, int r,int pivot) { }3lG'Y#Kpy
do{ $%EX~$=m]-
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); J!Z6$VERy
SortUtil.swap(data,l,r); kFjv'[Y1N
} ,!Wo6{'
while(l SortUtil.swap(data,l,r); -6)n QNj|
return l; (wu'FFJp#
} c/Pql!h+
It3k#A0
} jf)cDj2
Do4hg $:40
改进后的快速排序: B Ewa QvQ!
'xS@cFo(
package org.rut.util.algorithm.support; 2/3yW.C
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import org.rut.util.algorithm.SortUtil; tav@a)
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/** O
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* @author treeroot >vD}gGBe
* @since 2006-2-2 j \rGU){
* @version 1.0 3$"V,_TBZ
*/ +pYgh8w@
public class ImprovedQuickSort implements SortUtil.Sort { U*+-#
k
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private static int MAX_STACK_SIZE=4096; GP+=b:C{E
private static int THRESHOLD=10; H!Gw@u]E
/* (non-Javadoc) y],opG6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0_qr7Ui8(
*/ 2Pb+/1*ix
public void sort(int[] data) { A\?t^T
int[] stack=new int[MAX_STACK_SIZE]; 2#NnA3l]x%
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int top=-1; )ThNy:4
int pivot; 9Qszr=C0
int pivotIndex,l,r; "]jN'N(.
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stack[++top]=0; wfO-bzdw
stack[++top]=data.length-1; aNry> 2:
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while(top>0){ c)
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int j=stack[top--]; MR|A_e^x
int i=stack[top--]; dWzf C@]
<k[_AlCmsg
pivotIndex=(i+j)/2; ,R=!ts[qi
pivot=data[pivotIndex]; &'`C#-e@
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SortUtil.swap(data,pivotIndex,j); QeF:s|[
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file://partition mNC?kp
l=i-1; 1q;R+65
r=j; bq5ySy{8
do{ X"3p/!W.4
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); <mP_K^9c
SortUtil.swap(data,l,r); {8mJ<b>VA
} m\*ca3$
while(l SortUtil.swap(data,l,r); pS-o*!\C.
SortUtil.swap(data,l,j); NI"Zocp
)0I-N)
if((l-i)>THRESHOLD){ 27R4B
O
stack[++top]=i; 8oUR/___
stack[++top]=l-1; `hY%HzV=
} aNM*=y`
if((j-l)>THRESHOLD){ Vel(+HS
stack[++top]=l+1; zEQQ4)mA
stack[++top]=j; gLSI?
} %@(+`CCA
+z9BWo!{I
} m!zvt
file://new InsertSort().sort(data); qPi $kecx
insertSort(data); >=rniHs=?7
} k~;~i)Eg
/** Ib2&L
* @param data :9&@/{W
*/ 9FC_B+7
private void insertSort(int[] data) { M`#g>~bI#R
int temp; K~]Xx~F
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )s7 EhIP
} aiX4;'$x!
} qDg`4yX.}
} |CQjgI|;
P\[K)N/ 1
} .FYRi_Zd
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归并排序: ,F!-17_vt
b* n#XTV
package org.rut.util.algorithm.support; qc'KQ5w7!
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import org.rut.util.algorithm.SortUtil; p? +!*BZ
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/** 9]chv>dO)=
* @author treeroot +|oLS_
* @since 2006-2-2 Z@m5hx&
* @version 1.0 R))4J
*/ }>f%8O}
public class MergeSort implements SortUtil.Sort{ taVK&ohWx
!}`[s2ji
/* (non-Javadoc) _MQh<,Z8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mWoN\Rwj
*/ nJgN2Z
public void sort(int[] data) { V#4ox km
int[] temp=new int[data.length]; *c.w:DkfB
mergeSort(data,temp,0,data.length-1); 0jXDjk5'<
} x
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N1>M<N03
private void mergeSort(int[] data,int[] temp,int l,int r){ 9$(N q
int mid=(l+r)/2; E^w0X,0XlE
if(l==r) return ; `LwZ(M-hI
mergeSort(data,temp,l,mid); t=fAG,k5
mergeSort(data,temp,mid+1,r); C{-Dv-<A>
for(int i=l;i<=r;i++){ iF:NDqc
temp=data; Q&&=:97d
} :E|+[}|
int i1=l; !}eq~3
int i2=mid+1; mCI5^%*0jQ
for(int cur=l;cur<=r;cur++){ )>rYp
)
if(i1==mid+1) DM,;W`|6%
data[cur]=temp[i2++]; B( wi+;
else if(i2>r) =xH>,-8}
data[cur]=temp[i1++]; |f}`uF
else if(temp[i1] data[cur]=temp[i1++]; *MWI`=c
else : T4ap_Ycq
data[cur]=temp[i2++]; )Ps<u- V
} $reQdN=~
} 0KZsWlD:L
c)QOgXv
} Z 2uU'T
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改进后的归并排序: LKud'
)qWO}]F
package org.rut.util.algorithm.support; &4p~i Z
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import org.rut.util.algorithm.SortUtil; O4W2X@
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/** X*r?@uK5
* @author treeroot =*WfS^O
* @since 2006-2-2 U`4t4CHA
* @version 1.0 :y!{=[>M(
*/ OH5#.${O
public class ImprovedMergeSort implements SortUtil.Sort { i?F~]8
#/K71Y
private static final int THRESHOLD = 10; {*Qx^e`h$.
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/* PiX(Ase
* (non-Javadoc) {f>e~o
* I"jub
kI=Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ( 2KopL
*/ )]JQlm:H
public void sort(int[] data) { p#dYNed]'
int[] temp=new int[data.length]; }Do$oyAV$G
mergeSort(data,temp,0,data.length-1); M`G#cEc
} lHgmljn5u
#|} EPD9$
private void mergeSort(int[] data, int[] temp, int l, int r) { Nu%MXu+
int i, j, k; ?CuwA-j
int mid = (l + r) / 2; 0 !F!Y_
if (l == r) Z1+1>|-iW
return; !2g*=oY
if ((mid - l) >= THRESHOLD) TP)}1@
mergeSort(data, temp, l, mid); `c_Wk]i
else @yn1#E,
insertSort(data, l, mid - l + 1); , *Z!Bd8
if ((r - mid) > THRESHOLD) 6.QzT(
mergeSort(data, temp, mid + 1, r); =&?BPhJE
else V)Y#m/$`
insertSort(data, mid + 1, r - mid); -IG@v0_w
O>2i)M-h9x
for (i = l; i <= mid; i++) { e:WKb9nT
temp = data; >o!~T}J7
} ,tHV
H7[
for (j = 1; j <= r - mid; j++) { ~fF;GtP
temp[r - j + 1] = data[j + mid]; |VML.u:N
} Wc{/K6]f
int a = temp[l]; m2PI^?|e
int b = temp[r]; (wZ/I(4
for (i = l, j = r, k = l; k <= r; k++) { >iI-Cs7TD
if (a < b) { &\M<>>IB
data[k] = temp[i++]; :pgpE0
a = temp; `KmM*_a
} else { &^^V*O
data[k] = temp[j--]; HO9w"){d$
b = temp[j]; xU;;@9X
} 45tQ$jr`1
} /X97dF)zt
} GC^>oF
4Yya+[RY
/** xr1,D5
* @param data Ex}hk!
* @param l jZ> x5 W
* @param i NN@'79x
*/ YS+|n%?
private void insertSort(int[] data, int start, int len) { jq12,R2+)
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); oD&axNk
} ]?a i
} ) i=.x+Q
} ]}0QrD
} .V`N^H:l
N)^`
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堆排序: QNm8`1
x3Ze\N8w
package org.rut.util.algorithm.support; wOs t).
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import org.rut.util.algorithm.SortUtil; eNX!EN(^
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/** )@[##F2
* @author treeroot {>n\B~*,"C
* @since 2006-2-2 zX}t1:nc
* @version 1.0 VQwF9Iq]`
*/ k}FmdaPI'
public class HeapSort implements SortUtil.Sort{ mL]a_S{H
u+5MrS[
/* (non-Javadoc) + Un(VTD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kBg8:bo~
*/ /l1OC(hm
public void sort(int[] data) { :.aMhyh#*
MaxHeap h=new MaxHeap(); Tqj:C8K{
h.init(data); a(oa?OdJ
for(int i=0;i h.remove(); Z]qbLxJV
System.arraycopy(h.queue,1,data,0,data.length); T1#r>3c\
} |Q?^B a
2rPmu
private static class MaxHeap{ t4v@d
" `FcW
void init(int[] data){ W!t =9i
this.queue=new int[data.length+1]; <sli!rv
for(int i=0;i queue[++size]=data; \45F;f_r6
fixUp(size); (5a:O (\r
} b|oT!s
} ?/|KM8
mLm?yb:
private int size=0; "Tz'j}< 9C
g+A>Bl3#
private int[] queue; qs Wy
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public int get() { ZXl_cq2r
return queue[1]; c*.-mS~Z`
} Z@,[a
L@s_)?x0
public void remove() { ( 4(,"
SortUtil.swap(queue,1,size--); 7>lM^ :A
fixDown(1); V:h7}T95
} S#:l17e3
file://fixdown F.),|t$\
private void fixDown(int k) { -nXlW
int j; Xz`0nU
while ((j = k << 1) <= size) { 7@
\:l~{
if (j < size %26amp;%26amp; queue[j] j++; stQ_Ke
if (queue[k]>queue[j]) file://不用交换 C),i#v
break; -}_1f[b
SortUtil.swap(queue,j,k); h:RP/0E
k = j; ly:2XvV3~
} ]f_`w81[
} >L')0<!&
private void fixUp(int k) { J6Vx7
while (k > 1) { ?N^1v&Q
int j = k >> 1; $*|M+ofQ
if (queue[j]>queue[k]) Y (pUd3y
break; Zm0' p!
SortUtil.swap(queue,j,k); 'o~gT ;T#
k = j; _b$ yohQ
} ?lML+
} k.z(.uc=
>,[@SF%
} !Au#j^5K-o
pH3<QNq5
} >n^780S|
`Qjs{H
SortUtil: T<-_#}.Hn
$,yAOaa
package org.rut.util.algorithm; P?S]Q19Q4
)2_[Ww|.
import org.rut.util.algorithm.support.BubbleSort; h aApw(.%
import org.rut.util.algorithm.support.HeapSort; yzv"sd[8N
import org.rut.util.algorithm.support.ImprovedMergeSort; hJsP;y:@Lm
import org.rut.util.algorithm.support.ImprovedQuickSort; ,J8n}7aI
import org.rut.util.algorithm.support.InsertSort; H8B$#.
import org.rut.util.algorithm.support.MergeSort; GC:q6}
import org.rut.util.algorithm.support.QuickSort; K8R>O *~
import org.rut.util.algorithm.support.SelectionSort; _ OC@J*4.
import org.rut.util.algorithm.support.ShellSort; M~N/er
`CI_zc=jx
/** !|up"T I
* @author treeroot BM`6<Z "3q
* @since 2006-2-2 yOt#6Vw
* @version 1.0 ^sB0$|DU
*/ 9!
/kyyU
public class SortUtil { 2 rr=FJ
public final static int INSERT = 1; f:-l}Zj
public final static int BUBBLE = 2; eIfQ
TV
public final static int SELECTION = 3; 4e Y?#8
public final static int SHELL = 4; NB4O,w
public final static int QUICK = 5; tM^4K r~o,
public final static int IMPROVED_QUICK = 6; }Uwji
public final static int MERGE = 7; c(e>Rmh
public final static int IMPROVED_MERGE = 8; #K6cBfqI
public final static int HEAP = 9; (v%24bv
- X71JU
public static void sort(int[] data) { s<)lC;#e
sort(data, IMPROVED_QUICK); 0'fswa)
} 0=#>w_B
private static String[] name={ RGE(#
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" c%J6!\
}; o]Rlivahm
4G?^#+|^
private static Sort[] impl=new Sort[]{ :#pdyJQ_
new InsertSort(), m$kQbPlatN
new BubbleSort(), yB2h/~+
new SelectionSort(), =y4dR#R(\
new ShellSort(), hU8Y&R)=9
new QuickSort(), -g]Rs!w'
new ImprovedQuickSort(), J+J,W5t^
new MergeSort(), J6AHc"k.
new ImprovedMergeSort(), ]MV8rC[\
new HeapSort() w{6C4~0
}; /N"3kK,N
~vF a\7sf
public static String toString(int algorithm){ u]};QR
return name[algorithm-1]; 1!~cPD'F
} +HK4sA2;
Q#bW"},^k
public static void sort(int[] data, int algorithm) { ,T/Gv;wa2
impl[algorithm-1].sort(data); 8:ubtB
} /x<g$!`X
U&!TA(Yr
public static interface Sort { o<`vh*U@,4
public void sort(int[] data); `KJ(. m
} ,6)N.
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J
public static void swap(int[] data, int i, int j) { )H8_.]|
int temp = data; ZlT }cA/n
data = data[j]; !FEc:qH
data[j] = temp; X\}l" ]
} iSW2I~PD
} ewDYu=`*