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。 t/#[At5p=
插入排序: 7.hn@_
Cj31'
package org.rut.util.algorithm.support; t%/Y^N;
Y*dzoN.sW
import org.rut.util.algorithm.SortUtil; v](7c2;
/** d {T3
* @author treeroot ;sS N
* @since 2006-2-2 YJ_LD6PL9
* @version 1.0 "fL:scq@0
*/ Lg
sQz(-
public class InsertSort implements SortUtil.Sort{ }pTy mAN
e{>X2UNW
/* (non-Javadoc) Wx;:_F7'\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .3t[M0sd
*/ vLXN{ ]
public void sort(int[] data) { ?sdVd
int temp; tz6d}$
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); x3MV"hm2
} )R<hYd
} gV91=Pj
} C;y3?+6P$
bN8GRK )
} kViX FPW
'@3hU|jO!
冒泡排序: Q!(C$&f
R]0awV1b
package org.rut.util.algorithm.support; e3yBB*@
w<lHY=z E
import org.rut.util.algorithm.SortUtil; 3BDAvdJ4.
o2He}t2o
/** +3(1QgYM%
* @author treeroot 7^A;.x
* @since 2006-2-2 Mp:tcy,*
* @version 1.0 ^^qB=N[';
*/ x24
public class BubbleSort implements SortUtil.Sort{ .>Gq/[c0|
AhZ8B'Ee
/* (non-Javadoc) l(-6pP5`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k+f!)7_
*/ ?J<Y]
public void sort(int[] data) { \`Db|D?oy
int temp; ?a+tL'D[
for(int i=0;i for(int j=data.length-1;j>i;j--){ 35%'HFt_
if(data[j] SortUtil.swap(data,j,j-1); N X4!G>v
} OQ;DqV
} DK}k||-
} Hc ]/0:
} z)='MKrEt-
G,FYj'<!7,
} #DXC6f
BQ2EDy=}6
选择排序: <]r.wn=}M
Y 4sf 2w
package org.rut.util.algorithm.support; x JQde 4
}eX zs_
import org.rut.util.algorithm.SortUtil; 7?:7}xb-
iov55jT~l@
/** rZ/,^[T
* @author treeroot E5w.wx
* @since 2006-2-2 {0+gPTp
* @version 1.0 ,Drd s"H
*/ )cNG)F
public class SelectionSort implements SortUtil.Sort { "2o,XF
"gADHt=MIR
/* qPK3"fzH
* (non-Javadoc) RY2`v
pv
* JV=d!Gi[C
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2-Y%W(bEzs
*/ f^@`[MJj1C
public void sort(int[] data) { oj /:
int temp; *A':^vgk
for (int i = 0; i < data.length; i++) { H[#s&Fk2
int lowIndex = i; I8;pMr6
for (int j = data.length - 1; j > i; j--) { |kyxa2F{
if (data[j] < data[lowIndex]) { wrv-"%u)
lowIndex = j; ?vuM'UH-
} :?2+'+%'
} n8DWA`[ib
SortUtil.swap(data,i,lowIndex); 9JV(}v5[
} rl qn39
} ^} P|L
2s_shY<=}L
} 2T3v^%%j
<"Z]S^>$
Shell排序: L!x7]g,^
Adp:O"-H1o
package org.rut.util.algorithm.support; 3U9]&7^
("<3w2Vlh
import org.rut.util.algorithm.SortUtil; q$`{$RX
^o}!=aMr
/** Pf5RlpL:p
* @author treeroot &2C6q04b
* @since 2006-2-2 i% 19|an
* @version 1.0 n&Bolt(tO
*/ e;\g[^U
public class ShellSort implements SortUtil.Sort{ -} \g[|
tz\7,yGT
/* (non-Javadoc) m/gl7+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {|=
8wB
*/ Sh(
public void sort(int[] data) { ;
>Tko<
for(int i=data.length/2;i>2;i/=2){ gO_{(\w*
for(int j=0;j insertSort(data,j,i); 6 "U&i9
} [h SE^
m
} Q]9H9?}N?
insertSort(data,0,1); xq+$Q:f
} -bJht
Vb*q^
v
/** "v@$CR9<T
* @param data Z(Fsk4,
* @param j pMnkh}Q#
* @param i h$.y)v
*/ o<ak&LX`9
private void insertSort(int[] data, int start, int inc) { e0Cr> I5/e
int temp; 9AK<<Mge.
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); iD+Q\l;%
} b3N>RPsHS
} :M)B#@ c=
} 6C@,&2<yK
g
N76
} *ci,;-*C
w|!>>W6J
快速排序: )_N|r$i\
(yIl]ZN*
package org.rut.util.algorithm.support; Se7NF@>9_
W}p>jP}
import org.rut.util.algorithm.SortUtil; 1^ZQXUzl%i
(oO*|\9u
/** ImO\X`{
* @author treeroot 3on]#/"1b
* @since 2006-2-2 )X2=x^u*U
* @version 1.0 u~FXO[b
*/ jH#Tt;
public class QuickSort implements SortUtil.Sort{ ykcW>h
fr
kDf-P
/* (non-Javadoc) Sd/?xyF1(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zBD ?O!
*/ T;K,.a8bU
public void sort(int[] data) { rM<|<6(L
quickSort(data,0,data.length-1); m-9{@kgAM?
} %>Z;/j|#r
private void quickSort(int[] data,int i,int j){ qXPjxTg{[
int pivotIndex=(i+j)/2; o5?f]Uq5 ,
file://swap yk OJhd3
SortUtil.swap(data,pivotIndex,j); OEmz`JJ67
J4 [7*v
int k=partition(data,i-1,j,data[j]); UUi@
U
SortUtil.swap(data,k,j); 2 Pn
if((k-i)>1) quickSort(data,i,k-1); /T&z
:st0
if((j-k)>1) quickSort(data,k+1,j); TD:NL4dm
b@j**O>[q)
} / 4{6`
/** 'X&sH/>r
* @param data YCZl1ry:V=
* @param i cr Hd$~q,
* @param j o&}!bq]
* @return q8%T)$!
*/ )HbsUm#
private int partition(int[] data, int l, int r,int pivot) { $/^DY&
do{ ~?i;~S
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 7pH`"$
SortUtil.swap(data,l,r); KPO?eeT.WZ
} ZYDLl8
while(l SortUtil.swap(data,l,r); a_Y*pOu
return l; 9a}rE
} <?UbzT7X
1%~yb Q
} ({JXv
eaLSq
改进后的快速排序: &5>R>rnB
|>o]+ V
package org.rut.util.algorithm.support; Tbv", b
>PdYQDyVS
import org.rut.util.algorithm.SortUtil; >xQgCOi
X+zFRL%
/** tSX<^VER7
* @author treeroot QCB2&lN\&L
* @since 2006-2-2 \; ! oG
* @version 1.0 |"h# Q[3
*/ c"`o V! m
public class ImprovedQuickSort implements SortUtil.Sort { x<^+nTzN
Y+5nn
private static int MAX_STACK_SIZE=4096; W>3[+wB
private static int THRESHOLD=10; e~C5{XEE
/* (non-Javadoc) I^erMQn[ z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _~V7m
*/ d 7vD
public void sort(int[] data) { faQ}J%a
int[] stack=new int[MAX_STACK_SIZE]; qgREkb0
XFpII45
int top=-1; &KinCh7l L
int pivot; PI_MSiYQ
int pivotIndex,l,r; k L\;90
sq
`f?tA?
stack[++top]=0; M^^5JNY
stack[++top]=data.length-1; (IdXJvKU!
f P'qUN
while(top>0){ 7u[U %yd
int j=stack[top--]; ):"Z7~j=
int i=stack[top--]; umPd+5i
Q;r9>E!
pivotIndex=(i+j)/2; A9Cq(L_H
pivot=data[pivotIndex]; rg Gm[SL*<
m(MPVY<X
SortUtil.swap(data,pivotIndex,j); [vM ksHk4
$|+q9o\
file://partition Ia_I~ U$
l=i-1; .B2?%2S
r=j; Q72}V9I9
do{ WJH-~,u
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); fZ8%Z
SortUtil.swap(data,l,r); '
>a(|
} 8m%+O#
while(l SortUtil.swap(data,l,r); )I7~<$w
SortUtil.swap(data,l,j);
4C@ .X[r
3ZdheenK9
if((l-i)>THRESHOLD){ b=nQi./f
stack[++top]=i; =`RogjbP
stack[++top]=l-1; #[ZF'9x
} Ik[aiz
if((j-l)>THRESHOLD){ Ay?KE{Qs '
stack[++top]=l+1; Uedzt
stack[++top]=j; &o{=
} ~*:{U
b[5$$_[
} R@*mMWW,
file://new InsertSort().sort(data); 6)<g%bH!
insertSort(data); (-k`|X"
} 1, 5"sQ$
/** Gk~QgD/Pix
* @param data p4l^b[p
*/ YrlOvXW
private void insertSort(int[] data) { ,H6*9!Dv2
int temp; 6z;C~_BV
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <dzfD;
} CeL`T:]r
} tBR"sBiws
} V>"nAh]}.
;. jnRPo";
} 80qSPitj
y X%q7ex
归并排序: )_[eqr
5:3%RTLG
package org.rut.util.algorithm.support; T NwBnMe
*Uq1q
import org.rut.util.algorithm.SortUtil; 0
#*M'C#
=Xwr*FTr
/** DH7B4P
* @author treeroot ""AP-7
* @since 2006-2-2 06hzCWm#
* @version 1.0 zj~(CNE
*/ =&Dt+f&
public class MergeSort implements SortUtil.Sort{ "ecG\}R=
-nBb -y
/* (non-Javadoc) ZR|)+W;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q. zBm@:
*/ TVaD',5_V%
public void sort(int[] data) { LJ^n6 m|_
int[] temp=new int[data.length]; oW0A8_|9
mergeSort(data,temp,0,data.length-1); |>w>}w`~
} cJb.@8^J
8:W,""
private void mergeSort(int[] data,int[] temp,int l,int r){ ;ZnSWIF2
int mid=(l+r)/2; ;Y/{q B!
if(l==r) return ; um/2.Sn>
mergeSort(data,temp,l,mid); $U3|.4
mergeSort(data,temp,mid+1,r); E0F8FR'
for(int i=l;i<=r;i++){ P''5A6#5
temp=data; :.;pRz
} 4<`Qyul-
int i1=l; t(<^of:
int i2=mid+1; K})=&<M0
for(int cur=l;cur<=r;cur++){ c!,&]*h"k
if(i1==mid+1) R^_7B(
data[cur]=temp[i2++]; q> ;u'3}
else if(i2>r) Pv mmyF
data[cur]=temp[i1++]; WCa>~dF>
else if(temp[i1] data[cur]=temp[i1++]; j$2rU'
else }>)e~\Tdzb
data[cur]=temp[i2++]; _e2=BE`W)
} OR{<)L
} qG=?+em
608}-J=3#
} c~_nOd
RQaB_bg7
改进后的归并排序: pKSn
3-A
to}g4
package org.rut.util.algorithm.support; /O,>s
,'FH[2
import org.rut.util.algorithm.SortUtil; G9`;Z^<L
G~$.Af!9W
/** ejr9e@D^
* @author treeroot CV9o,rL
* @since 2006-2-2 bfjC: "!H
* @version 1.0 0F"W~OQ6
*/ ~&zrDj~FI
public class ImprovedMergeSort implements SortUtil.Sort { 7(ni_|$|
[w0@7p"7
private static final int THRESHOLD = 10; ,r=9$i_
Iq76JJuCb
/* hW^*b:v{
* (non-Javadoc) YY!Lv:.7>
* VnZRsFY<^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ].=~C"s,a
*/ #3b_#+,
public void sort(int[] data) { U9?fUS
int[] temp=new int[data.length]; *=sMJY9#jE
mergeSort(data,temp,0,data.length-1); -?jI{].:8
} I:~KF/q
D=B$ Pv9%
private void mergeSort(int[] data, int[] temp, int l, int r) { $)HD`E
int i, j, k; %l4;-x<e
int mid = (l + r) / 2; ^M:Y$9r_s
if (l == r) 3q$[r_
return; &.m.ruab
if ((mid - l) >= THRESHOLD) {;z{U;j
mergeSort(data, temp, l, mid); JJIlR{WY_
else -<g&U*/E
insertSort(data, l, mid - l + 1); i6S5 4&^!
if ((r - mid) > THRESHOLD) n!Dr:$
mergeSort(data, temp, mid + 1, r); \wJ2>Q
else iMT[sb
insertSort(data, mid + 1, r - mid); "aU)
[
q=EHB5!q
for (i = l; i <= mid; i++) { A`'k5uG
temp = data; G_vcuCHm
} )S:,q3gxJ
for (j = 1; j <= r - mid; j++) { PRdyc+bf
temp[r - j + 1] = data[j + mid]; 65% WjO
} cEdf&*_-'I
int a = temp[l]; wZ(H[be
int b = temp[r]; (G>S`B
for (i = l, j = r, k = l; k <= r; k++) { s6U$]9 `
if (a < b) { -qbx:Kk(
data[k] = temp[i++]; [NxC7p:Lo
a = temp; v>XAzA
} else { 4# L}&
data[k] = temp[j--]; d@0p<at>~
b = temp[j]; L:.z
FW,
} Bf21u9
} 8Q{"W"]O7
} ; ,vGw<|o
;u(#-C2^{l
/** *]7$/%.D
* @param data -ho%9LW%|
* @param l 8[k:FGp>
* @param i OV"uIY[%8V
*/ <UEta>jj
private void insertSort(int[] data, int start, int len) { Daw;6f:
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); @QN(ouq Q
} A_y]6~Mu?~
} Nf]h8d~
} $_ BoG
} ~6Xr^An/Z
V
6*ohC:
堆排序: (u{?aG~
tk5zq-/d
package org.rut.util.algorithm.support; n@JZ 2K4
'^{:HR#i
import org.rut.util.algorithm.SortUtil; +55+%oGl
f@j )t%mh
/** _.{I1*6Y2
* @author treeroot >1$vG
* @since 2006-2-2 :Rroz]*
* @version 1.0 2Y7u M;8
*/ N|rB~
public class HeapSort implements SortUtil.Sort{ baO'FyCs9&
ppP0W`p
/* (non-Javadoc) R<L<kChg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x 8/I"!gI
*/ LmZ"_
public void sort(int[] data) { Y'{F^VxA/
MaxHeap h=new MaxHeap(); W"v"mjYud
h.init(data); z@8W
for(int i=0;i h.remove(); +_T`tmQ
System.arraycopy(h.queue,1,data,0,data.length); lz [s
} @2`$ XWD
}eK.\_t=
private static class MaxHeap{ +T/T \[
1iJa j
void init(int[] data){ &)$}Nk
this.queue=new int[data.length+1]; /Xm4%~b_gj
for(int i=0;i queue[++size]=data; MS~+P'
fixUp(size); JW}O`H9
} S]x\Asj;w
} X{u\|e{
-z~;f<+I`
private int size=0; fEB&)mM
"g%=FH3e
private int[] queue; ED;rp9(
YApm)O={
public int get() { 69?wZfj'
return queue[1]; y2o~~te
} A-&XgOL
^2a 63_
public void remove() { 2X,`t%o
SortUtil.swap(queue,1,size--); KNG7$icG
fixDown(1); NVX @1}
} 'JRYf;9c
file://fixdown >X_5o^s2s
private void fixDown(int k) { ]ft}fU5C1
int j; _*.ImD
while ((j = k << 1) <= size) { )gHfbUYS
if (j < size %26amp;%26amp; queue[j] j++; )?MUUI :
if (queue[k]>queue[j]) file://不用交换 0a}a
break; @~CXnc0
SortUtil.swap(queue,j,k); ^1-Vd5g
k = j; iF*L-
} J|aU}Z8m
} *hIjVKTu79
private void fixUp(int k) { V%Ww;Ca]I
while (k > 1) { :[J'B4>9
int j = k >> 1; mv{bX|.
if (queue[j]>queue[k]) G -V~6
break; va[r~
SortUtil.swap(queue,j,k); ~zYk,;m
k = j; D$U`u[qjtS
} Pk{%2\%&2
} d#CAP9n;'
&e\UlM22
} X.GK5Phd
uZml.#@4
} phi9/tO\u
z'9U.v'M)
SortUtil: +`f3_Xd
<lgX=wx L
package org.rut.util.algorithm; yi;pn Z
*6aIDFNl
import org.rut.util.algorithm.support.BubbleSort; \P;2s<6i\
import org.rut.util.algorithm.support.HeapSort; jdX*
import org.rut.util.algorithm.support.ImprovedMergeSort; )wNcz~
Y
import org.rut.util.algorithm.support.ImprovedQuickSort; [?55vYt
import org.rut.util.algorithm.support.InsertSort; )m$MC25
import org.rut.util.algorithm.support.MergeSort; ;-^8lWt
import org.rut.util.algorithm.support.QuickSort; ~0Z.,p_
import org.rut.util.algorithm.support.SelectionSort; KA? J:
import org.rut.util.algorithm.support.ShellSort; FEA t6
ctMH5"F&1
/** -BC`p 8
* @author treeroot kfgkZ"9
* @since 2006-2-2 {u[_^
* @version 1.0 PJL
[En*
*/ D@)L?AB1f
public class SortUtil { 57Bxx__S4`
public final static int INSERT = 1; JqV}>"WMV
public final static int BUBBLE = 2; lx<!*2
-^
public final static int SELECTION = 3; Om(Ir&0
public final static int SHELL = 4; Ez
/
W$U
public final static int QUICK = 5; MNf^ml[
public final static int IMPROVED_QUICK = 6; 1G8,Eah
public final static int MERGE = 7; %J8uVD.2
public final static int IMPROVED_MERGE = 8; Ip|=NQL>
public final static int HEAP = 9; k_`h (R
U&W/Nj
public static void sort(int[] data) { snYyxi
sort(data, IMPROVED_QUICK); [nf5<
} L:\>)6]Ls
private static String[] name={ oFKTBH:I
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" xEg@Y"NQ
}; NwN3T]W
Dn#^-,H
private static Sort[] impl=new Sort[]{ cAq5vAqmg
new InsertSort(), & zv!cf
new BubbleSort(), ?4#UW7I
new SelectionSort(), srhI%Zj
new ShellSort(), dVSQG947i:
new QuickSort(), Pq,iR J
new ImprovedQuickSort(), {dYz|O<
new MergeSort(), =~TPrO^
new ImprovedMergeSort(), ?&=JGk^eJ
new HeapSort() "?^#+@LV
}; s6k(K>Pl
S1#5oy2
public static String toString(int algorithm){ c8Nl$|B
return name[algorithm-1]; Nw '$r
} owx0J,,G
mFmxEv
public static void sort(int[] data, int algorithm) { tL M@o|:
impl[algorithm-1].sort(data); gwbV$[.X
} B'I_i$g4w
(duR1Dz
public static interface Sort { kqjj&{vPFJ
public void sort(int[] data); 3Ww 37V>h
} -<:w{cV
85USMPF
public static void swap(int[] data, int i, int j) { KQ^|prN?y
int temp = data; .hJcK/m
data = data[j]; ]xGpN ]u
data[j] = temp; niyI$OC
} Za]~[F
} tn;{r