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。 pYf-S?Y/V
插入排序: TuaBm1S{f
h@ryy\9
package org.rut.util.algorithm.support; Qt<&WB
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import org.rut.util.algorithm.SortUtil; $f7l34Sf3
/** u]UOSf n
* @author treeroot g[4WzDF*
* @since 2006-2-2 DSn_0D
* @version 1.0 kE1TP]|
*/ }k.Z~1y
public class InsertSort implements SortUtil.Sort{ b4N[)%@
7B66]3v
/* (non-Javadoc) #o#H?Vo9b
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ' S/gmn
*/ fe_5LC"
public void sort(int[] data) { X#^[<5
int temp; GnJt0 {
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); G]&qx`TBK
} }Jj}%XxKs
} nAlQ7'
} +mT_QsLEv
63IM]J
} a9Zq{Ysj
FfT`;j
冒泡排序: ]Zh%DQ
SOA,kwHRe
package org.rut.util.algorithm.support; 5\VWC I
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import org.rut.util.algorithm.SortUtil; ~((O8@}J
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/** sK?twg;D*|
* @author treeroot )zDCu`
* @since 2006-2-2 4;2uW#dG"
* @version 1.0 o-B$J?
*/ >Cq<@$I2EB
public class BubbleSort implements SortUtil.Sort{ sc#qwQ#
1 [Bk%G@D&
/* (non-Javadoc) 1T
n}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?(_08O
*/ QQc -Ya!v
public void sort(int[] data) { 1EX;MW-p<T
int temp; Z6MO^_m2
for(int i=0;i for(int j=data.length-1;j>i;j--){ *MW\^PR?
if(data[j] SortUtil.swap(data,j,j-1); >uEzw4w
} SiN0OB
} ]u/sphPe
} h^P#{W!e\
} ;L ^o*`
g2Z`zQA7
} }3WxZv]I}
'[%j@PlCX
选择排序: cQ}{[YO
+^F Zq$NP
package org.rut.util.algorithm.support; @d1Q"9}B
+k R4E23:
import org.rut.util.algorithm.SortUtil; ":N9(}9
9QJyZ
/** 4Ftu
* @author treeroot C~exi[3
* @since 2006-2-2 rEz^
* @version 1.0 <b*DQ:N
*/ A?OQE9'
public class SelectionSort implements SortUtil.Sort { &_8947
T6$+hUM$1
/* <(#ej4ar,
* (non-Javadoc) a(ZcmYzXU
* |CbikE}kL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +:/%3}`
*/ :7;@ZEe
public void sort(int[] data) { H3oFORh
int temp; {?7Uj
for (int i = 0; i < data.length; i++) { w_V P
J
int lowIndex = i; NDokSw-
for (int j = data.length - 1; j > i; j--) { 9%obq/Lb
if (data[j] < data[lowIndex]) { YtLt*Ig%
lowIndex = j; 86a\+Kz%%L
} Q\0'lQJdy
} E' uZA
SortUtil.swap(data,i,lowIndex); ;}p
} kD"{g#c
} hOK8(U0
n~Lt\K:
} ]T) 'Hb
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Shell排序: z` b,h\
7F.4Ga;
package org.rut.util.algorithm.support; .*Qx\,
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import org.rut.util.algorithm.SortUtil; |;{6&S
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/** -$Ih@2"6
* @author treeroot ~)M~EX&pK
* @since 2006-2-2 %\:Wi#w>
* @version 1.0 dqcL]e
*/ @>7%qS
public class ShellSort implements SortUtil.Sort{ %!#azI
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/* (non-Javadoc) &BSn?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :b!s2n!u
*/ X"*5+* z]
public void sort(int[] data) { ,<X9 Y2B
for(int i=data.length/2;i>2;i/=2){ RPbZ(.
for(int j=0;j insertSort(data,j,i); +aAc9'k
} "$vRMpW:
} 0<*<$U
insertSort(data,0,1); Vi|#@tC'
} {Y1Ck5
tpx2IE
/** i"=\d
* @param data b7ZSPXV
* @param j r:
:b
* @param i `@yp+8
*/ /g.U&oI]D
private void insertSort(int[] data, int start, int inc) { .fs3>@T"#
int temp; 7uk[Oy<_
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); UC$ppTCc?
} yWf`rF{
} "9807OME
} 43 :X,\~)
1xx}~|F?|
} &xExyz~`
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快速排序: !PE]C!*gv&
1AFA=t:]p
package org.rut.util.algorithm.support; qxJ\ye+'*
.X;K%J2
import org.rut.util.algorithm.SortUtil; "uf%iJ:%
*=xr-!MEk
/** _','9|
* @author treeroot c1gQ cqF
* @since 2006-2-2 hCo|HB
* @version 1.0 FC4wwzb
*/ f,Ghb~y
public class QuickSort implements SortUtil.Sort{ !TcJ)0
bN=P*hdf
/* (non-Javadoc) [PbOfxxgA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &6k3*dq
*/ 7PF%76TO
public void sort(int[] data) { 8l">cVo]T
quickSort(data,0,data.length-1); TJ*T:?>e
} \^1E4C\":
private void quickSort(int[] data,int i,int j){ . 'yCw#f
int pivotIndex=(i+j)/2; $`'/+x"%
file://swap ^/k*h J{
SortUtil.swap(data,pivotIndex,j); :2)/FPL6
d0 /#nz
int k=partition(data,i-1,j,data[j]); ll?X@S
SortUtil.swap(data,k,j); (Awm9|.{+
if((k-i)>1) quickSort(data,i,k-1); G]aOHJ:.
if((j-k)>1) quickSort(data,k+1,j); t3^&;&[
U`s{Jm
} 3= ;<$+I6
/** Xlt|nX~#;
* @param data >KKMcTOYY
* @param i tZB<on<.)
* @param j (uidNq
* @return *gz{.)W
*/ BD7Ni^qI$
private int partition(int[] data, int l, int r,int pivot) { S`]k>'
l
do{ a-J.B.A$Z/
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ,v}k{( 16{
SortUtil.swap(data,l,r); [1H^3g
'
} -|9=P\U8S
while(l SortUtil.swap(data,l,r); \lNN Msd&
return l; M"To&?OI
} |e0`nn=
SZCze"`[
} Ef{Vp;]
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改进后的快速排序: k~z Iy;AZ
g#E-pdY
package org.rut.util.algorithm.support; pI<f) r
l}M!8:UzU
import org.rut.util.algorithm.SortUtil; 1yY0dOoLG)
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/** [=`q>|;pOv
* @author treeroot hK|Ul]qI
* @since 2006-2-2 8Xs8A.
* @version 1.0 I1&aM}y{G
*/ MnW+25=N
public class ImprovedQuickSort implements SortUtil.Sort { {BU;$
B#1;r-^P<
private static int MAX_STACK_SIZE=4096; IEvdV6{K
private static int THRESHOLD=10; Jj%K=sw
/* (non-Javadoc) ""~ajy
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vY`s'%WV
*/ Ny)X+2Ae
public void sort(int[] data) { C+&l<
fM&
int[] stack=new int[MAX_STACK_SIZE]; Eu04e N
seeBS/%
int top=-1; ~4cC/"q$X
int pivot; {H'Y `+
int pivotIndex,l,r; o*hF<D$Y
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stack[++top]=0; ENY+^7
stack[++top]=data.length-1; BTrn0
,UE83j8D^
while(top>0){ P=G3:eX
int j=stack[top--]; uWE^hz"
int i=stack[top--]; lks!w/yCF
8, >P
pivotIndex=(i+j)/2; )whA<lC
pivot=data[pivotIndex]; E8&TO~"a]e
Ozf@6\/t
SortUtil.swap(data,pivotIndex,j); >b4eL59
m&yJzMW|
file://partition '1/i"yoW
l=i-1; |$_sX9\`?|
r=j; @U}1EC{A
do{ H}
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); @Do= k
SortUtil.swap(data,l,r); ;sFF+^~L
} VVOd]2{
while(l SortUtil.swap(data,l,r); 3sZ\0P}
SortUtil.swap(data,l,j); ,s;UfF
.#pU=v#/[
if((l-i)>THRESHOLD){ UW
EV^ &"x
stack[++top]=i; t\ewHZG"
stack[++top]=l-1; Owk |@6!
} =odFmF
if((j-l)>THRESHOLD){ )53y
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stack[++top]=l+1; du^J2m{f
stack[++top]=j; 8)I^ t81
} (dSL7nel;L
@f_+=}|dc
} [!OxZ!
file://new InsertSort().sort(data); |ZBI *
insertSort(data); #Mw8^FST
} #>+ HlT
/** Y:a]00&)#Y
* @param data H7:] ]j1
*/ ]OzUGXxo~
private void insertSort(int[] data) { ]z9=}=If
int temp; HyWCMK6b
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?6Y?a2 |
} q'82qY
} HHsmLo c4
} U4B(#2'
wD)XjX
} ~e@z;]CiY
TRq6NB
归并排序: "9e\c;a
L;I]OC^J
package org.rut.util.algorithm.support; sLQ^F
8X|-rM{
import org.rut.util.algorithm.SortUtil; H_Q+&9^/
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/** ea')$gR
* @author treeroot 'b{]:Y
* @since 2006-2-2 `W*U4?M
* @version 1.0 E^eVvP4uC@
*/ ixD)VcD-f
public class MergeSort implements SortUtil.Sort{ CzEd8jeh7
kPLxEwl
/* (non-Javadoc) W6/yn
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D>tR-
*/ ^DwYOo 2B
public void sort(int[] data) { p.?rey<%
int[] temp=new int[data.length]; LSr]S79N1
mergeSort(data,temp,0,data.length-1); ~R92cH>L
} 0:Ol7
3'u-'
private void mergeSort(int[] data,int[] temp,int l,int r){ [u*5z.^
int mid=(l+r)/2; .0]<k,JZZ
if(l==r) return ; "a U
aotx
mergeSort(data,temp,l,mid); Y/zj[>
mergeSort(data,temp,mid+1,r); W:L
AP
R
for(int i=l;i<=r;i++){ WI-1)1t
temp=data; '1s0D]
} :Fvrs(
x
int i1=l; u:_,GQ )\
int i2=mid+1; ;;N9>M?b
for(int cur=l;cur<=r;cur++){ OpYY{f
if(i1==mid+1) AkQ~k0i}b
data[cur]=temp[i2++]; !d0kV,F:
else if(i2>r) %OOl'o"V{s
data[cur]=temp[i1++]; `RL"AH:+
else if(temp[i1] data[cur]=temp[i1++]; j#q-^h3H
else
Z>5b;8
data[cur]=temp[i2++]; pg)WKbV
} *CI#+P
} 5]Y?m'
}S<2A7)el
} kL"2=7m;
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改进后的归并排序: ,1o FPa{?
OYTkV}tG
package org.rut.util.algorithm.support; 5C5sgR C
b}TS0+TF
import org.rut.util.algorithm.SortUtil; JrRH\+4K
j HJ`,#
/** L0WN\|D
* @author treeroot 'AS|ZRr/
* @since 2006-2-2 b2&0Hx
* @version 1.0 vnZC,J `
*/ U|Ta4W`k\
public class ImprovedMergeSort implements SortUtil.Sort { [:SWi1cK2
<l E<f+
private static final int THRESHOLD = 10; ]|PiF+
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/* n]o<S+z
* (non-Javadoc) vT,AMja
* q6V>zi
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QX'qyojxN
*/ n[Y~]
public void sort(int[] data) { 5uj?#)N
int[] temp=new int[data.length]; CN8Y\<Ar
mergeSort(data,temp,0,data.length-1); *mvlb
(' &
} H*'IK'O
%2V? ,zY@
private void mergeSort(int[] data, int[] temp, int l, int r) { ;,:`1UI
int i, j, k; +*/Zu`kzX
int mid = (l + r) / 2; z/@slT
if (l == r) 9Y_HyOZ*GX
return; fSvM(3Y<Qh
if ((mid - l) >= THRESHOLD) _5Ct]vy
mergeSort(data, temp, l, mid); R)s:rJQ=p
else ,S]7 'UP
insertSort(data, l, mid - l + 1); jLHkOk5{:
if ((r - mid) > THRESHOLD) S k\K4
mergeSort(data, temp, mid + 1, r); :emiQ
else Sw,+p
insertSort(data, mid + 1, r - mid); Ig0VW)@
_H7x9
y=
for (i = l; i <= mid; i++) { #( 146
temp = data; N)\. [v
} <FkFs{(t
for (j = 1; j <= r - mid; j++) { O) n~](sC\
temp[r - j + 1] = data[j + mid]; 9gK`E
} M\Ye<Tk
int a = temp[l]; HJ[c M6$2
int b = temp[r]; uo%)1NS!
for (i = l, j = r, k = l; k <= r; k++) { rlSeu5X6
if (a < b) { ~
=2PU$u
data[k] = temp[i++]; x@;m8z0
a = temp; SP_75BJ
} else { R=2FNP
data[k] = temp[j--]; !@*7e:l
b = temp[j]; `%"\@<
} #r~# I}U
} YWO)HsjP
} bI9~jWgGp
~H<6gN<j(.
/** yg=q;Z>[~
* @param data ~[nSXnPO
* @param l H;k~oIsk
* @param i 3<f}nfB%r?
*/ u(F_oZ~
private void insertSort(int[] data, int start, int len) { 9ZsVy
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); w4{<n/"
} paE[rS\
} 3J|F?M"N7
} }?_?V&K|
} 4-y:/8
By",rD- r
堆排序: :v&$o'Sak
|a`Sc%
package org.rut.util.algorithm.support; u$Jz~:=,
6@F9G4<Z
import org.rut.util.algorithm.SortUtil; sW'AjI
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/** N gGp
* @author treeroot `w7v*h|P
* @since 2006-2-2 W ]?G}Q;
* @version 1.0 X Dm[Gc>(~
*/
}Gm>`cw-
public class HeapSort implements SortUtil.Sort{ li'YDtMKCY
yT"Eq"7/Y#
/* (non-Javadoc) c&?m>2^6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qJa H,
*/ *-=(Q`3
public void sort(int[] data) { RSyUaA
MaxHeap h=new MaxHeap(); PI:4m%[
h.init(data); (pCrmyB
for(int i=0;i h.remove(); ):6 8%,
System.arraycopy(h.queue,1,data,0,data.length); rv^@, 8vq
} z2_*%S@
*ebSq)
private static class MaxHeap{ i$:*Pb3mV
%G_B^p4
void init(int[] data){ ]7F=u!/`<C
this.queue=new int[data.length+1]; vrhT<+q
for(int i=0;i queue[++size]=data; ^w@%cVh
fixUp(size); ]}-7_n#cC
} rq/yD,I,
} kHghPn?8]
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private int size=0; %S@ZXf~:
\K{0L
private int[] queue; 9N%We|L,c
n.`($yR_
public int get() { 6xe*E[#k\
return queue[1]; p$NQyS5C"S
} QT<
}]
0
1R{!]uh
public void remove() { Q_Q''j(r6b
SortUtil.swap(queue,1,size--); ['X]R:3h
fixDown(1); F3v!AvA|
} x=hiQ>BIO0
file://fixdown -aPg#ub
private void fixDown(int k) { ?Wr+Q
int j; b9KP( _
while ((j = k << 1) <= size) { M=.n7RY-
if (j < size %26amp;%26amp; queue[j] j++; <CYd+! (
if (queue[k]>queue[j]) file://不用交换 j^j1
break; \:# L)
SortUtil.swap(queue,j,k); av}k)ZT_
k = j; <
Mn ;
} SO|NaqWa
} QuF:p
private void fixUp(int k) { hLd^ agX
while (k > 1) { TluW-S
int j = k >> 1; L3u&/Tn2
if (queue[j]>queue[k]) LEbB(x;@
break; BOb">6C
SortUtil.swap(queue,j,k); JgKO|VO
k = j; xjuN-
} ?*G|XnM&
} ]_mb7X>
lk^Ol&6
} ~:rl=o }
k$z_:X
} (Y.k8";)`
G\/zkrxmv
SortUtil: Zw
26
IXMop7~
package org.rut.util.algorithm; ~rE|%o
LvH4{B
import org.rut.util.algorithm.support.BubbleSort; =\&;Fi]
import org.rut.util.algorithm.support.HeapSort; #l\=}#\1Wb
import org.rut.util.algorithm.support.ImprovedMergeSort; =t#llgi~
import org.rut.util.algorithm.support.ImprovedQuickSort; ~9a<0Mc?
import org.rut.util.algorithm.support.InsertSort; j\[dx^\=
import org.rut.util.algorithm.support.MergeSort; )0.kv2o.
import org.rut.util.algorithm.support.QuickSort; }>pknc?
import org.rut.util.algorithm.support.SelectionSort; 'Vzp2
import org.rut.util.algorithm.support.ShellSort; EA@.,7F
i^X]j
/** xBThq?N?
* @author treeroot zsEc(
* @since 2006-2-2 9|^2",V
* @version 1.0 >a!/QMh
*/ )#0O>F~
public class SortUtil { >Eyt17_H"n
public final static int INSERT = 1; ^b4 9
public final static int BUBBLE = 2; .LPV#&
public final static int SELECTION = 3; :)-Sk$
public final static int SHELL = 4; 1E[J%Rh\l
public final static int QUICK = 5; ,uSMQS-O'4
public final static int IMPROVED_QUICK = 6; oA7tEu
public final static int MERGE = 7; [`#CXq'
public final static int IMPROVED_MERGE = 8; @wGPqg
public final static int HEAP = 9; SB;&GHq"n
.9/hHCp
public static void sort(int[] data) { R$h<<v)%
sort(data, IMPROVED_QUICK); 7X`g,b!
} 0#7>o^2
private static String[] name={ n*R])=F@c
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" !P2ro~0/
}; : Xda1S
CmP9Q2
private static Sort[] impl=new Sort[]{ gDQ^)1k
new InsertSort(), G)AqbY
new BubbleSort(), MD}w Y><C
new SelectionSort(), f&NgS+<K$
new ShellSort(), =J]&c?I
new QuickSort(), 9@SC}AF.
new ImprovedQuickSort(), R~TTL
new MergeSort(), bWjc'P6rx
new ImprovedMergeSort(), ]g#: KAqz
new HeapSort() fbyd"(V8r
}; a(m2n.0'>
e[{0)y>=
public static String toString(int algorithm){ fF!Yp iI"
return name[algorithm-1]; h/QXPdV
} qJf?o.Pv
poc`q5i+
public static void sort(int[] data, int algorithm) { q\9JgD)
impl[algorithm-1].sort(data); F#3Q_G^/
} j"8ZM{aO
SpIv#?
public static interface Sort { [$ubNk;!z
public void sort(int[] data); lB8-Z ow
} :tc@2/>!O
BwN0!lsF3
public static void swap(int[] data, int i, int j) { E'f{i:O"~
int temp = data; juP7P[d$qW
data = data[j]; =eq[:K<6
data[j] = temp; :p1u(hflS
} 7zl5yKN
} PF0_8,@U