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。 [OC5l>
插入排序: b4[bL2J$h1
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package org.rut.util.algorithm.support; /`wvxKX
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import org.rut.util.algorithm.SortUtil; @~^5l
/** TFlet"ge=
* @author treeroot j+$rj
* @since 2006-2-2 ]:XoRyIZ1[
* @version 1.0 ,$s8GAmq
*/ 9\_eK,*B
public class InsertSort implements SortUtil.Sort{ ;$.J3!
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/* (non-Javadoc) X= 5xh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u)}$~E>
*/ UC]\yUK1J
public void sort(int[] data) { =8AO:
int temp; K,+LG7ec
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~A'!2
} pNepC<rY
} bDL,S?@
} Enum/O5
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} ZX9T YN
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冒泡排序: 4|riKo)
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package org.rut.util.algorithm.support; .F
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import org.rut.util.algorithm.SortUtil; 9K{%vK
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/** JtYP E?
* @author treeroot IzikDc10
* @since 2006-2-2 ?XrQ53
* @version 1.0 n0r+A^]
*/ JD)(oK%C
public class BubbleSort implements SortUtil.Sort{ PF)jdcX
mn, =i
/* (non-Javadoc) K28+]qy[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dgR
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*/ v- T$:cL
public void sort(int[] data) { .k,1f*%
int temp; MLw7}[
for(int i=0;i for(int j=data.length-1;j>i;j--){ Ixb=L(V
if(data[j] SortUtil.swap(data,j,j-1); Wk~WOzr}^
} i6dHrx]:,
} >80;8\
} E7t+E)=8
} QLXN*c
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} .{ocV#{s
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选择排序: UtPLI al
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package org.rut.util.algorithm.support; *W.C7=
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import org.rut.util.algorithm.SortUtil; G,?hp>lj
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/** "$#xK |t
* @author treeroot ;YA(|h<
* @since 2006-2-2 |SoCRjuCPM
* @version 1.0 }YB*]<]
*/ :o|\"3
public class SelectionSort implements SortUtil.Sort { \w/yF4,3<w
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/* +ln9c
* (non-Javadoc) ^V ?<K.F
* ^8 z R
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rf
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*/ o)Iff)m$
public void sort(int[] data) { Li!Vx1p;u.
int temp; )m`<H>[Eb=
for (int i = 0; i < data.length; i++) { R n}l6kbM
int lowIndex = i;
gp5_Z-me
for (int j = data.length - 1; j > i; j--) { *,e:]!*
if (data[j] < data[lowIndex]) { 2/vMoVT,
lowIndex = j; -=%@L&y1
} QqFR\6
} (\\eo
SortUtil.swap(data,i,lowIndex); k3u"A_"c
} LCZ\4g05
} s%qF/70'
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} -K
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Shell排序: 4 8:>NW
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package org.rut.util.algorithm.support; )k\H@Dy%$
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import org.rut.util.algorithm.SortUtil; 6ys
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/** N/Z2hn/m
* @author treeroot Ir
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* @since 2006-2-2 ]^Qn
* @version 1.0 lt
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*/ 9{(.Il J>
public class ShellSort implements SortUtil.Sort{ mR&H9NG
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/* (non-Javadoc) <D:.(AUeO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W~zbm]
*/ 19HM])Zw\
public void sort(int[] data) { ,24p%KJ*X
for(int i=data.length/2;i>2;i/=2){ }@;ep&b*
for(int j=0;j insertSort(data,j,i); UELy"z
R
} x,rlrxI
} >64P6P;S
insertSort(data,0,1); uEktQ_u[
} qCljo5Tq'
U@HK+C"M|
/** G`n_YH084
* @param data <L"GqNuRQ
* @param j v{(^1cX
* @param i 7uKNd
*%
*/ XWUWY
private void insertSort(int[] data, int start, int inc) { /LvRP yj@
int temp; N"" BCh"
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); N.\-
8?>
} eZSNNgD<:
} =osv3>&q
} e7m*rh%5>
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} SSPHhAeH8
A Y*e@nk\
快速排序: UaWl6 Y&Vu
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package org.rut.util.algorithm.support; |2RC# ]/-Y
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import org.rut.util.algorithm.SortUtil; I(V!Mv8j
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/** ?)kG A$m#
* @author treeroot i(AT8Bo2
* @since 2006-2-2 _J Hd9)[
* @version 1.0 VtnRgdJ
*/ <~6h|F8
public class QuickSort implements SortUtil.Sort{ cl]Mi
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/* (non-Javadoc) v*r7Zz6l
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ToJ$A`_!`
*/ z.kvX+7'
public void sort(int[] data) { (BTVD,G
quickSort(data,0,data.length-1); Y&S24aql
} #:[t^}
private void quickSort(int[] data,int i,int j){ qv]}$WU
int pivotIndex=(i+j)/2; vgsJeV`}I
file://swap V!lZ\)
SortUtil.swap(data,pivotIndex,j); lr`&mZ( j
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int k=partition(data,i-1,j,data[j]); Ov-icDMm
SortUtil.swap(data,k,j); OW3sS+y
if((k-i)>1) quickSort(data,i,k-1); w2
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if((j-k)>1) quickSort(data,k+1,j); \HKxh:F'
YL]Z<%aKt
} |G?htZF
/** vR s,zL$W
* @param data TygW0b 1
* @param i K('hC)1
* @param j do*EKo
* @return wN;^[F
*/ N'^&\@)xiU
private int partition(int[] data, int l, int r,int pivot) { M}yDXJx
do{ U.DDaT1
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); M%ICdIc'
SortUtil.swap(data,l,r); ` :o4'CG
} 77\]B
while(l SortUtil.swap(data,l,r); 8,C*4y~
return l; LIcM3_.
} lu<xv
0`X]o'RxS
} GT0Of~?f
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改进后的快速排序: Fs9I7~L3
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package org.rut.util.algorithm.support; gDQ1?N'8{t
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import org.rut.util.algorithm.SortUtil; d@5[B0eH
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/** Dp)=0<$y
* @author treeroot sg$rzT-S4
* @since 2006-2-2 gj*+\3KO@a
* @version 1.0 j!U-'zJ
*/ Dpl A?
public class ImprovedQuickSort implements SortUtil.Sort { 5]AC*2(
#vti+A~n,4
private static int MAX_STACK_SIZE=4096; %= fHu+
private static int THRESHOLD=10; ] Hzt b
/* (non-Javadoc) L*&p!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IIn"=g=9
*/ G/7cK\^u
public void sort(int[] data) { ?d{Na=O\
int[] stack=new int[MAX_STACK_SIZE]; xx#zN0I>-y
hw=
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int top=-1; 3HcQ(+Z
int pivot; b:tob0TB
int pivotIndex,l,r; Zc
W:6po>
BT}!W`
stack[++top]=0; 3E!|<q$z
stack[++top]=data.length-1; 1Cv-
z([ v%zf
while(top>0){ 7f0lQ
int j=stack[top--]; 3'cE\u
int i=stack[top--]; ]pH-2_
23Nw!6S
pivotIndex=(i+j)/2; ;\14b?TUH
pivot=data[pivotIndex]; 5N/%v&1
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SortUtil.swap(data,pivotIndex,j); p<,*3huj
M$/|)U'W
file://partition ^j31S*f&:
l=i-1; }]lr>"~y}
r=j; L"o>wYx
do{ gm igsXQ
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Z
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SortUtil.swap(data,l,r); >[*8I\*@n
} ykV
5
while(l SortUtil.swap(data,l,r); j g8fU
SortUtil.swap(data,l,j); 57umx`m
jRJn+
if((l-i)>THRESHOLD){ gcdlT7F)b-
stack[++top]=i; CG Y]r.O*
stack[++top]=l-1; SL#0kc0x
} hc>HQrd
if((j-l)>THRESHOLD){ <{V(.=11
stack[++top]=l+1; Mxyb5h
stack[++top]=j; glM$R &/
} 7UVzp v
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} l49*<nkmq
file://new InsertSort().sort(data); .Le?T&_
insertSort(data); WtG~('g>&
} @+Si?8\
/** BJM.iXU)[
* @param data El.hu%#n*G
*/ C8Qa$._
private void insertSort(int[] data) { 2+QY hdw
int temp; i rU 6D
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Y
}$/e
} ow_W%I=6
} =&ks)MH-
} ;<Ar=?
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} -likj#Z
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归并排序: 1.D,W1s
:N4t49i
package org.rut.util.algorithm.support; Z4S!NDMm~
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import org.rut.util.algorithm.SortUtil; *h!28Ya(~
r+":' /[x
/** v"b+$*
* @author treeroot }1Gv)l7
* @since 2006-2-2 Cd,jDPrw
* @version 1.0 FbS|~Rp~
*/ gW>uR3Ca4
public class MergeSort implements SortUtil.Sort{ gQ'zW
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/* (non-Javadoc) Q=AavKn#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :S<f?*
}:
*/ gl\\+VyU
public void sort(int[] data) { /?@3.3sl_
int[] temp=new int[data.length]; pGJ>O/%
mergeSort(data,temp,0,data.length-1); uE%r/:!k4$
} i~I%D%;
2NC.Z;
private void mergeSort(int[] data,int[] temp,int l,int r){ bCo7*<I4
int mid=(l+r)/2; fZ0M%f
if(l==r) return ; =G7m)!
mergeSort(data,temp,l,mid); Si8pzd
mergeSort(data,temp,mid+1,r); }uJu>'1[G
for(int i=l;i<=r;i++){ *5%d XixN
temp=data; =Je[c,&j$?
} tnH2sHby
int i1=l; $*e2YQdLo
int i2=mid+1; `UD/}j@
for(int cur=l;cur<=r;cur++){ /|tJ6T1LrB
if(i1==mid+1) AK'[c+2[
data[cur]=temp[i2++]; Fq|Ni$
else if(i2>r) z\K"Rg~J
data[cur]=temp[i1++]; yE:+Lo`>
else if(temp[i1] data[cur]=temp[i1++]; ;j[>9g
else h"X;3b^ m
data[cur]=temp[i2++]; .E`\MtA
} |bTPtrT8
} G`cHCP_n
ZrPbl"`7
} KN<S}3MN
/N =b\-]
改进后的归并排序: 6 :b!F
qTdh eX/
package org.rut.util.algorithm.support; TE3lK(f
d,+Hd2o^X
import org.rut.util.algorithm.SortUtil; B2>H_dmQ
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/** 0z1ifg&
* @author treeroot U'H$`$Ov
* @since 2006-2-2 >V-A;S:
* @version 1.0 (}Z@R#njH
*/ /rWd=~[MO
public class ImprovedMergeSort implements SortUtil.Sort { 3{'Ne}5%I
5rw 7;'
private static final int THRESHOLD = 10; dP3CG8w5
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/* |iak z|])
* (non-Javadoc) Ag 9vU7
* .+PI}[g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u+Y\6~=+
*/ %|auAq&w
public void sort(int[] data) { tr<Nm6!
int[] temp=new int[data.length]; Hx"ob_^'7
mergeSort(data,temp,0,data.length-1); nV"~-On
} CAfGH!l!
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private void mergeSort(int[] data, int[] temp, int l, int r) { ZGexdc%
int i, j, k; (?n=33}Ci
int mid = (l + r) / 2; 8EW_V$>R
if (l == r) ck:T,F{}
return; [%q@]\U$s
if ((mid - l) >= THRESHOLD) dq(uVW^&ae
mergeSort(data, temp, l, mid); azCf
else \y97W&AN
insertSort(data, l, mid - l + 1); gH12[Us'`
if ((r - mid) > THRESHOLD) /sx@$cvW
mergeSort(data, temp, mid + 1, r); JZ)RGSG i
else )#?"Gjf~
insertSort(data, mid + 1, r - mid); |n2qVR,
) pzy
for (i = l; i <= mid; i++) { Fq0i`~L~
temp = data; dMh:ulIY>
} }tRm] w
for (j = 1; j <= r - mid; j++) { 2L3)#22m*
temp[r - j + 1] = data[j + mid]; /5S30 |K
} sd*p/Q|4
int a = temp[l]; h
k]
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int b = temp[r]; 6.sx?Y YM
for (i = l, j = r, k = l; k <= r; k++) { i+A3~w5c
if (a < b) { ~-ia+A6GIV
data[k] = temp[i++]; ]^yFaTfS
a = temp; VLOO8N[o
} else { zwhe
data[k] = temp[j--]; Luq#9(P
b = temp[j]; Ur9?Td'*>
} j]{_s"O
} :*I#n
} Y\D!/T
n`#tKwWHYx
/** N(;1o.~
* @param data ,vr? 2k
* @param l HJ9Kz^TnC
* @param i RiDJ> 6S
*/ _dqzB$JV
private void insertSort(int[] data, int start, int len) { ~5NXd)2+Ks
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Zq^At+8+
} x3hB5p$q
} .!Oo|m`V@
} R cAwrsd
} h?AS{`.1
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堆排序: N:S/SZI
|z9*GY6RU
package org.rut.util.algorithm.support; M\o9I
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import org.rut.util.algorithm.SortUtil; M||+qd W!
*{YlN}vA
/** T/b6f;t-s
* @author treeroot 6"wlg!k8
* @since 2006-2-2 /z4$gb7Y
* @version 1.0 WYH Q?
*/ I5`4Al
public class HeapSort implements SortUtil.Sort{ L5Ebc#
? E1<!~
/* (non-Javadoc) 7S-ys+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MDnKX?Y
*/ v_<rNc,z-s
public void sort(int[] data) { 6^V=?~a&z
MaxHeap h=new MaxHeap(); XeW<B0~
h.init(data); !<j'Ea
for(int i=0;i h.remove(); |nc@"OJ
System.arraycopy(h.queue,1,data,0,data.length); %>yG+Od5Z
} w^?>e;/\
/$ w%Q-p
private static class MaxHeap{ n&L+wqJ
4;w;'3zq
void init(int[] data){ sQ=]NF)\
this.queue=new int[data.length+1]; h:W;^\J:-
for(int i=0;i queue[++size]=data; n4s+>|\M
fixUp(size); ?ME6+Z\
} jfP*"uUK
} rxe>}ZO
,-$LmECg
private int size=0; 9eGyyZg
4qO+_!x{)
private int[] queue; 6w*dKInG[-
&4 {KV.
public int get() { :nh_k4S@v
return queue[1]; ?}Z1bH
} q]\:P.x!>
fX(3H1$"
public void remove() { {'NZ.
SortUtil.swap(queue,1,size--); ls_'')yp
fixDown(1); cL-[ZvyVX
} }QN1|mP2
file://fixdown JUsQ,ETn
private void fixDown(int k) { >NO[UX%yP
int j; D|lzGt
while ((j = k << 1) <= size) { Y#]+Tm(+
if (j < size %26amp;%26amp; queue[j] j++; -j+UMlkB
if (queue[k]>queue[j]) file://不用交换 4~ q5,^kgB
break; [^R^8k
SortUtil.swap(queue,j,k); Gk.
ruQW"
k = j; |!1Y*|Q%s
} (jnzT=y
}
[/PR\'|
private void fixUp(int k) { ")_|69 VX
while (k > 1) {
Hu^1[#
int j = k >> 1; l\E%+?K+^
if (queue[j]>queue[k]) ",p;Sd
break; 0QBiC]9
SortUtil.swap(queue,j,k); 6|K5!2
k = j;
d:_t-ZZo
} 3YeG$^y"
} P!$Zx)T
H_B4
} qPWP&k
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`
} 9"@\s$
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SortUtil: 6}Vf\j~
9
3U_tQ&1?
package org.rut.util.algorithm; nxY\|@
u9:`4b
import org.rut.util.algorithm.support.BubbleSort; Yw22z #K
import org.rut.util.algorithm.support.HeapSort; Kh"?%ZIa
import org.rut.util.algorithm.support.ImprovedMergeSort; N@;?CKU
import org.rut.util.algorithm.support.ImprovedQuickSort; -<c=US
import org.rut.util.algorithm.support.InsertSort; jTf@l?|
import org.rut.util.algorithm.support.MergeSort; CHdX;'`*
import org.rut.util.algorithm.support.QuickSort; aC^\(wp[
import org.rut.util.algorithm.support.SelectionSort; @+;$jRwq
import org.rut.util.algorithm.support.ShellSort; ;5wn67'
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/** o=u3&liBi
* @author treeroot ~{*7"o/
* @since 2006-2-2 (ScxLf=]
* @version 1.0 #&cI3i
*/ +y,T4^{
public class SortUtil { x*
DarSk
public final static int INSERT = 1; g6W)4cC8a
public final static int BUBBLE = 2; jAGTD I
public final static int SELECTION = 3; 'UkxS b
public final static int SHELL = 4; `^91%f
public final static int QUICK = 5; A]y`7jJ
public final static int IMPROVED_QUICK = 6; T\:4qETQF]
public final static int MERGE = 7; 7@C<oy_bb
public final static int IMPROVED_MERGE = 8; x9NEFtqjm
public final static int HEAP = 9; ".f ;+wH
xpNH?#&
public static void sort(int[] data) { u=Fv2
sort(data, IMPROVED_QUICK); :f Kl]XO
} <i<J^-W
private static String[] name={ :KH g&ZX7
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" jy7\+i
}; MtM%{=&_
y9_V
private static Sort[] impl=new Sort[]{ ~aw.(A?MI
new InsertSort(), Dw|}9;5:A
new BubbleSort(), uzXCIv@
new SelectionSort(), iz5CAxm
new ShellSort(), '#!
gh?
new QuickSort(), {Z{75}
new ImprovedQuickSort(), TH)"wNa
new MergeSort(), hrmut*<|
new ImprovedMergeSort(), d; [C6d
new HeapSort() ~"dA~[r
L
}; 4p e'06:
RFKtr
public static String toString(int algorithm){ YW-usvl&
return name[algorithm-1]; m%rd0=}57
} \:R%4w#Jv
$v,dz_O*\
public static void sort(int[] data, int algorithm) { yH7F''O7
impl[algorithm-1].sort(data); R|JC1f8P5
} `id9j
mCRt8rY;
public static interface Sort { ;g8R4!J
public void sort(int[] data); so^lb?g
} >82@Q^O
YgKZ#?*
public static void swap(int[] data, int i, int j) { YX%[ipgB
int temp = data; H/,gro
data = data[j]; z|fmrwkN'$
data[j] = temp; })uGRvz
} 9s_vL9u
} xrlmKSPa