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。 9`VF
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插入排序: &xT~;R^
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package org.rut.util.algorithm.support; [l{eJ/W
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import org.rut.util.algorithm.SortUtil; -w0>4JDs
/** O/~^}8TLL
* @author treeroot 73<yrBxp
* @since 2006-2-2 =f|a?j,f~
* @version 1.0 ${2fr&Tp
*/ (!=aRC.-
public class InsertSort implements SortUtil.Sort{ )o,0aGo>Of
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/* (non-Javadoc) cW%O-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (`*wiu+i
*/ }e @-[RJ!
public void sort(int[] data) { Ji=iq=S7
int temp; Hvk?(\x
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); J8'zvH&I
} 2"^9t1C2
} =hlu,
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} znRhQ+8;!
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} Jp0.h8i
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冒泡排序: g{(nt5|^l
9mm(?O~'p
package org.rut.util.algorithm.support; z$b!J$A1
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import org.rut.util.algorithm.SortUtil; bq]a8tSB
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/** >S]')O$c
* @author treeroot q"oNB-bz
* @since 2006-2-2 TQH#sx
* @version 1.0 tT:yvU@a
*/ Hq$|j,&?
public class BubbleSort implements SortUtil.Sort{ $Plk4 o*g
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/* (non-Javadoc) W
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q4oZJ -`
*/ PMcyQ2R->
public void sort(int[] data) { Y}Uw7\e
int temp; "N_?yA#(j
for(int i=0;i for(int j=data.length-1;j>i;j--){ <Z;BB)I&C`
if(data[j] SortUtil.swap(data,j,j-1); K%;yFEZ
} F^-4Pyq@
} ":ycyN@g
} (Bz(KyD[
} aT #|mk=\
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IJT
} I5]zOKlVR
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选择排序: |~Iw
|*i-Q @
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package org.rut.util.algorithm.support; 4y]*"(sQ;
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import org.rut.util.algorithm.SortUtil; dQ]j
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/** Z/x~:u_
* @author treeroot sTDBK!9I
* @since 2006-2-2 ~m7+^c@,
* @version 1.0 WyP1"e^9
*/ ~WSC6Bh@9
public class SelectionSort implements SortUtil.Sort { G)Y!aX
KMV!Hqkk
/* 4~4Hst#^
* (non-Javadoc) *6L^A`_1]
* UpILr\3U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _ sd?l
*/ K4"as9oFP
public void sort(int[] data) { SW7%SX,xM
int temp; @p;4g_F
for (int i = 0; i < data.length; i++) { A:f+x|[
int lowIndex = i; y06 2/$*$
for (int j = data.length - 1; j > i; j--) { .JE7vPv%!
if (data[j] < data[lowIndex]) { CJ_B.
lowIndex = j; 6C:Lq%}
} H\T
h4teE
} j^gF~Wz^
SortUtil.swap(data,i,lowIndex); _[x(p6Xp
} l< Y x
} <qBPN{'a"
JsV#:
} #!2gxm;g
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Shell排序: &m`
Xp'KQ1w)
package org.rut.util.algorithm.support; ,Gfnf%H\8>
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import org.rut.util.algorithm.SortUtil; `f s[C
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/** ?NL2|8
* @author treeroot -Je+7#P1
* @since 2006-2-2 -Jhf]
* @version 1.0 {1o=/&
*/ 8]O|$8'"
public class ShellSort implements SortUtil.Sort{ X_h+\
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/* (non-Javadoc) "783F:mPh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1xw},y6T2
*/ L2 I/h`n"
public void sort(int[] data) { A#T;Gi
for(int i=data.length/2;i>2;i/=2){ _7Z$"
for(int j=0;j insertSort(data,j,i); Ct B>
s7
} ;,viE~n
} /fX]Yu
insertSort(data,0,1); dWI\VS 9
} w:qwU\U>x
Qwb@3{
/** f~]5A%=cZ
* @param data 8'zwyd3
* @param j B$\5=[U
* @param i (vQShe\
*/ s#4
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private void insertSort(int[] data, int start, int inc) { >6@UjGj54
int temp; }%VHBkuc
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); R)#"Ab Z'
} rP*?a~<
} dZZHk
} tvd/Y|bV=
~ WVrtY Ju
} 0hPm,H*Y]
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快速排序: a+]@$8+
vZ*593C8
package org.rut.util.algorithm.support; o<x2,uT
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import org.rut.util.algorithm.SortUtil; " I:j a7
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/** 6n>+cX>E
* @author treeroot `LNRl'Zm
* @since 2006-2-2 r|
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* @version 1.0 $[IuEdc/
*/ &Uzg&eB
public class QuickSort implements SortUtil.Sort{ P}cGWfj
?:UDK?
/* (non-Javadoc) La9dFe-uu{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qF>}"m
*/ y%43w4
public void sort(int[] data) { L>cTI2NB.
quickSort(data,0,data.length-1); N'TL &]
} <
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private void quickSort(int[] data,int i,int j){ i/~A7\:8%
int pivotIndex=(i+j)/2; =T!M`
file://swap M,NYF`;a
SortUtil.swap(data,pivotIndex,j); BsRxD9r
!5pnl0D K*
int k=partition(data,i-1,j,data[j]); $dq
R]'
SortUtil.swap(data,k,j); _8kZ>w( L
if((k-i)>1) quickSort(data,i,k-1); k|1/gd5
if((j-k)>1) quickSort(data,k+1,j); *V5R[
vWwp'q
} wQDKv'zU1
/** s-Bpd#G>/
* @param data `5Q0U%`W
* @param i ;ZB[g78%R%
* @param j 2B5Z0<
* @return =fEn h'KE
*/ tyNT1F{
private int partition(int[] data, int l, int r,int pivot) { B xq(+^T
do{ c:M~!CXO
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); e%SQ~n=H 9
SortUtil.swap(data,l,r); G-xW&wC-
} b<NI6z8\
while(l SortUtil.swap(data,l,r); #D&eov?
return l; )mS
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} g&) XaF[!
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} V'^Hn?1^
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改进后的快速排序: wHvX|GwMv
FTsvPLIv"
package org.rut.util.algorithm.support; Rra<MOR
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import org.rut.util.algorithm.SortUtil; ~A(fn:d
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/** .k|8nNj
* @author treeroot 6=0"3%jn@
* @since 2006-2-2 }vgeQh-G
* @version 1.0 V)mitRaV
*/ j|c
public class ImprovedQuickSort implements SortUtil.Sort { :q/%uca9
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private static int MAX_STACK_SIZE=4096; j}ywdP`a
private static int THRESHOLD=10; uS`XWn<CSD
/* (non-Javadoc) FCgr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Btp 9v<"
*/ XvETys@d
public void sort(int[] data) { ).0klwfV
int[] stack=new int[MAX_STACK_SIZE]; )!z<q}i5
@8{-B;
int top=-1; LVP2jTz
int pivot; +twl`Z3n
int pivotIndex,l,r; )7j jfD\
<[Oe.0SGu
stack[++top]=0; z3x/Y/X$S
stack[++top]=data.length-1; P'MfuTtT&
N@6+DHt
while(top>0){ .5*5S[
int j=stack[top--]; |mvY=t
%
int i=stack[top--]; 1k"<T7K
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pivotIndex=(i+j)/2; 3Z/_}5%"
pivot=data[pivotIndex]; AtU%S9
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SortUtil.swap(data,pivotIndex,j); AUjZYp
i[L5,%5<H
file://partition In13crr4!
l=i-1; v_^>*Vm*
r=j; 5XtIVHA@{
do{ ;&7dX^oH
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ~(aMKB
SortUtil.swap(data,l,r); x9\z^GU%H
} 69< <pm,m
while(l SortUtil.swap(data,l,r); !r^fX=X>'
SortUtil.swap(data,l,j); hNU$a?eVpR
4Ys\<\~d
if((l-i)>THRESHOLD){ k0r93xa
stack[++top]=i; HE!"3S2S&+
stack[++top]=l-1; ^Mvgm3hg
} !U::kr=t
if((j-l)>THRESHOLD){ "{9^SPsp
stack[++top]=l+1; "t0l)P*C}
stack[++top]=j; eYtP396C|
} hufpk y[&8
1FA:"0lO
} 2P,%}Ms
file://new InsertSort().sort(data); ==#mlpi`S[
insertSort(data); wF=?EK(;P{
} LUaOp
"
/** R<djW5 ()f
* @param data c,j[ix
*/ )B*D\9\Z
private void insertSort(int[] data) { :MaP58dhh
int temp; )WNw0cV}J>
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "%(SLQOyy
} z!s1$5:" 0
} po9f[/s'+o
} TI/5'Oke$
@ /.w%
} S:lie*Aux*
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归并排序: T{So2@_&
V1#:[o63+
package org.rut.util.algorithm.support; k3+LP7|*
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import org.rut.util.algorithm.SortUtil; I:6H65(&
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/** cY^'Cj
* @author treeroot ?WP *At0
* @since 2006-2-2 +mPVI
* @version 1.0 eC3 ~| G_O
*/ _]v@Dq VP
public class MergeSort implements SortUtil.Sort{ i@`qam
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/* (non-Javadoc) h_HPmh5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %At.nlss
*/ Xhs*nt%l
public void sort(int[] data) { ~ <36vsk
int[] temp=new int[data.length]; ]f~!Qk!I7r
mergeSort(data,temp,0,data.length-1); '':MhRb
} $[g#P^
JU#m?4g
private void mergeSort(int[] data,int[] temp,int l,int r){ <Nk:C1Op}
int mid=(l+r)/2; *C);IdhK%y
if(l==r) return ; bU \T
mergeSort(data,temp,l,mid); pAws{3(Q
mergeSort(data,temp,mid+1,r); ]D&U}n
for(int i=l;i<=r;i++){ _+j#.o>
temp=data; 7|xu)zYB
} ?bPW*A82{q
int i1=l; fK _uuw4
int i2=mid+1; VAo`R9^D#
for(int cur=l;cur<=r;cur++){ ;X;(7
if(i1==mid+1) QHxof7
data[cur]=temp[i2++]; |- <72$j
else if(i2>r) )5NWUuH 5
data[cur]=temp[i1++]; l"1*0jgBw
else if(temp[i1] data[cur]=temp[i1++]; ^T#jBqe
else R^mkQb>m.
data[cur]=temp[i2++]; 9}_'
} t3AmXx
} UxxX8N
&>!-67
} gA`QV''/:
AB{zkEuK
改进后的归并排序: {1_<\~J
-u7NBtgUh
package org.rut.util.algorithm.support; z%1e>`\E
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import org.rut.util.algorithm.SortUtil; MsZx 0]
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/** yh/JHo;
* @author treeroot p6aR/gFkqv
* @since 2006-2-2 x]@z.Yj
* @version 1.0 } '?qUy3x
*/ -k@1#c+z
public class ImprovedMergeSort implements SortUtil.Sort { @lq)L
3 yw$<lm
private static final int THRESHOLD = 10; #.!#"8{0_
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/* fs:yx'mxV
* (non-Javadoc) ( et W4p
* ak-agH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l p(D@FT
*/ PxQQf I>
public void sort(int[] data) { m"-kkH{I
int[] temp=new int[data.length]; \#xq$ygg
mergeSort(data,temp,0,data.length-1); jO/cdLKX(
} :b*7TJ\grN
t|V<K^
private void mergeSort(int[] data, int[] temp, int l, int r) { W/%hS)75
int i, j, k; K a&
2>F
int mid = (l + r) / 2; 1Y&W>p
if (l == r) _5H~1G%q
return; ,vO\n^
if ((mid - l) >= THRESHOLD) i39ZBs@
mergeSort(data, temp, l, mid); >~Xe` }'
else IC5QH<.$C
insertSort(data, l, mid - l + 1); 'l=>H#}<B
if ((r - mid) > THRESHOLD) (# mvDz
mergeSort(data, temp, mid + 1, r); N$=9R
else oH+PlL
insertSort(data, mid + 1, r - mid); BWQ`8
%\(-<aT
for (i = l; i <= mid; i++) { Zs{7km
temp = data; Lui6;NY
} H8I)D& cw
for (j = 1; j <= r - mid; j++) { :IBP "
temp[r - j + 1] = data[j + mid]; ;l~a|KW0
} >zDQt7+g;
int a = temp[l]; !yPy@eP~
int b = temp[r];
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for (i = l, j = r, k = l; k <= r; k++) { Gp
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if (a < b) { B1J,4
data[k] = temp[i++]; n@ SUu7o
a = temp; bL`\l!qQx;
} else { k}F7Jw#.
data[k] = temp[j--]; (3mL!1\
b = temp[j]; -3mIdZ
} 87[ ,.W
} x?V^l*
} D ka8[z7
3o[(pfcU
/** :e=7=|@7
* @param data ?g{[U0)
* @param l K<:%ofB"S
* @param i
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*/ y705
private void insertSort(int[] data, int start, int len) { i a!!jK}
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 2F`#df
} \fEG5/s}T
} gJX"4]Ol#}
} [n| }>
} $)"T9$>$
~EY)c~H
堆排序: .z_nW1id
F?R6zvive
package org.rut.util.algorithm.support; -rI7ihr*
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import org.rut.util.algorithm.SortUtil; PdVx&BL*
#*.4Jv<R
/** hG.}>(VV
* @author treeroot D((/fT)eD
* @since 2006-2-2 *Vq'%b9
* @version 1.0 (^FMm1@T
*/ YToG'#qs
public class HeapSort implements SortUtil.Sort{ ~&p]kmwXSX
5I6?gv/
/* (non-Javadoc) FT~c|ep.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )e PQxx
*/ guYP|
public void sort(int[] data) { 8A]8yX =
MaxHeap h=new MaxHeap(); AJLzLbV+
h.init(data); K/C}
for(int i=0;i h.remove(); c^1JSGv
System.arraycopy(h.queue,1,data,0,data.length); +qjZ;5(
} NiVLx_<Pr'
nt|n[-}
private static class MaxHeap{ D[@-`F
p+b9D
void init(int[] data){ 2i!R>`
this.queue=new int[data.length+1]; um]*nXIr
for(int i=0;i queue[++size]=data; (AZneK
:*
fixUp(size); W%ix|R^2]
} "7+^`?
} uv$5MwKU
tQ;Fgv8Y!
private int size=0; 4%nK0FAj
b}7g>
private int[] queue; ._x"b5C
!K*3bY`#
public int get() { 5?>Q[a.Ne
return queue[1]; EMH-[EBx
} 7SkW!5
Z%.Ld2Q{
public void remove() { 4xs>X7
SortUtil.swap(queue,1,size--); UVi9}zr
fixDown(1); u_ :gqvC=
} ~rOvVi&4
file://fixdown JK^%V\m
private void fixDown(int k) { Rb
b[N#p5
int j; l3MA&&++KF
while ((j = k << 1) <= size) { 8j&1qJx)
if (j < size %26amp;%26amp; queue[j] j++; ?j!/Hc/b4
if (queue[k]>queue[j]) file://不用交换 +BI%.A`2
break; 4yxf/X)
SortUtil.swap(queue,j,k); P&o+ut:
k = j; =}0>S3a.7
} }/NL"0j+4
} aFrZ
;_
private void fixUp(int k) { Gqar5
while (k > 1) { Pa\yp?({q
int j = k >> 1; fEK%)Z:0
if (queue[j]>queue[k]) %tkL<e
break; uZ1G,9
SortUtil.swap(queue,j,k); <3k9 y^0
k = j; i}:^<jDv?
} bb/A}<
zD
} J(,gLl
S^e e<%-
} 14-uy.0[
,tFLx#e#
} 4NFvX4
F+Hmp\rM#
SortUtil: m<4tH5};d
_B==S4^/yU
package org.rut.util.algorithm; gWjz3ob
!|
GD8i
import org.rut.util.algorithm.support.BubbleSort; >Cr'dKZ}
import org.rut.util.algorithm.support.HeapSort; 1NlpOVq:)
import org.rut.util.algorithm.support.ImprovedMergeSort; g31\7\)Ir
import org.rut.util.algorithm.support.ImprovedQuickSort; 9@p+g`o
import org.rut.util.algorithm.support.InsertSort; 'khhn6itA
import org.rut.util.algorithm.support.MergeSort; Bd13p_V"6
import org.rut.util.algorithm.support.QuickSort; Kv\uBMJNW
import org.rut.util.algorithm.support.SelectionSort; 6k\8ulHw
import org.rut.util.algorithm.support.ShellSort; H]f8W]"c[
9[\$\l
/** "g;}B"rG
* @author treeroot FVHR
* @since 2006-2-2 ]:]w+N%7
* @version 1.0 >R6>*|~S
*/ O#D
N3yu?
public class SortUtil { @z.HyQ_v
public final static int INSERT = 1; Je~Ybh
public final static int BUBBLE = 2; -f[95Z3}
public final static int SELECTION = 3; 5./(n7d_
public final static int SHELL = 4; v/7iu*u
public final static int QUICK = 5; &f>1/"lnd\
public final static int IMPROVED_QUICK = 6; ?pF uV`Zm
public final static int MERGE = 7; yy3-Xu4
public final static int IMPROVED_MERGE = 8; Jp`qE
public final static int HEAP = 9; (V+iJ_1g{
3HmJixy
public static void sort(int[] data) { )eSD5hOI)
sort(data, IMPROVED_QUICK); -jsk-,
} 6m{1im=
private static String[] name={ 3LD`Ep
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" A@ lY{e
}; Bso3Z ^X.
|b:91l
private static Sort[] impl=new Sort[]{ K F`@o@,
new InsertSort(), rwou[QU
new BubbleSort(), >NN&j#;x~
new SelectionSort(), HBnnIbEtF'
new ShellSort(), Vam4/6
new QuickSort(), 8L*P!j9`EY
new ImprovedQuickSort(), [P23.`G~J
new MergeSort(), n$y)F} .-
new ImprovedMergeSort(), VlQaT7Q
new HeapSort() aC2\C=ru_
}; v81H!c.*
/"<o""<]
public static String toString(int algorithm){ 9nPc>O$
return name[algorithm-1]; ;4 ON
} mN:p=.&
<
r/vRaOg>X
public static void sort(int[] data, int algorithm) { @eGJ_ J
impl[algorithm-1].sort(data); Xy(o0/7F9
} "R/Xv+;
sh %snLw
public static interface Sort { )tyhf(p6
public void sort(int[] data); 8E|
Nf
} 3o=K?eOdg
24
i00s|#
public static void swap(int[] data, int i, int j) { }vbs6u
int temp = data;
$fwv'
data = data[j]; >f$>Odqe
data[j] = temp; t:G67^<3
} MZX-<p+
} O:Fnxp5@