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。 @3b0hi4
插入排序: YJr@4!j*
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package org.rut.util.algorithm.support; PRf2@0ZV
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import org.rut.util.algorithm.SortUtil; b%pLjvU
/** G =lC[i
* @author treeroot b/<n:*$
* @since 2006-2-2 #mtlgK'
* @version 1.0 vY.p~3q :)
*/ ~/gqXT">
public class InsertSort implements SortUtil.Sort{ ;.m"y-
JJ[J'xl@
/* (non-Javadoc) q}+9$v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VE{t]>*-u
*/ \t )Zk2
public void sort(int[] data) { c)lMi}/
int temp; ]Ub?Wo7F?
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); qzV:N8+,`
} r)h+pga5^E
} -KOE2f
} H%sbf&
gi
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} g3"`b)M
80 p7+W2m
冒泡排序: h!MZ6}zb)
YZ'gd10T
package org.rut.util.algorithm.support; P^.L0T5g
oSTGs@EK
import org.rut.util.algorithm.SortUtil; 6kYn5:BhIi
C;STJrew
/** t[0gN:s
* @author treeroot ~
dmyS?Or
* @since 2006-2-2 r=s2wjk
* @version 1.0 |8V+(Vzl
*/ \W#M]Q
public class BubbleSort implements SortUtil.Sort{ uvZ|6cM
"EhA _ =i
/* (non-Javadoc) `"/@LUso
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6Pd;I,k
*/ Fe`$mtPu .
public void sort(int[] data) { Ns&SZO
int temp; rN_\tulOF
for(int i=0;i for(int j=data.length-1;j>i;j--){ =j}]-!
if(data[j] SortUtil.swap(data,j,j-1); C#vU'RNpl
} 3kQky
} q[**i[+%
} Z>M0[DJ_
} 8CwgV
F8/4PB8-
} Q>= :$I
8"RX~Igf
选择排序: 265df
Y9Pu
(w)Qt/P^4
package org.rut.util.algorithm.support; L?<V KT
E}4R[6YD
import org.rut.util.algorithm.SortUtil; o3j4XrK
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/** *7DQ#bD
* @author treeroot 0FHN
* @since 2006-2-2 .gx*gX1<
* @version 1.0 p\F*Y,4
*/ BWz*!(
public class SelectionSort implements SortUtil.Sort { -bcm"(<T'
>*k3D&
/* O`Nzn~),x
* (non-Javadoc) JKXs/r;:
* \JN?3}_J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zTm&m#){3A
*/ 'tp+g3V
public void sort(int[] data) { s#-`,jqD
int temp; ~B|K]&/]
for (int i = 0; i < data.length; i++) { -hyY5!rD
int lowIndex = i; M~p=OM<
for (int j = data.length - 1; j > i; j--) { _Su$oOy(Ea
if (data[j] < data[lowIndex]) { 8^^Xr
lowIndex = j; #k5Nnv#(J
} w}YO+
} O-5H7Kd-
SortUtil.swap(data,i,lowIndex); ~S#Le
} )Q&:$]
} l>H#\MR
Z[Uz~W6M]
} eBBqF!WDb
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Shell排序: E<D45C{DP
3|l+&LF!IC
package org.rut.util.algorithm.support; T"XZ[q
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import org.rut.util.algorithm.SortUtil; `a98+x?JF
Ry r2
/** /vBOf;L
* @author treeroot C.Y]PdYyj
* @since 2006-2-2 FE" ksi 9
* @version 1.0 F@)wi0
*/ ~UEft
public class ShellSort implements SortUtil.Sort{ ^4h/6^b0c
<jY"+@rF
/* (non-Javadoc) bK<'J=#1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Mb"i}Yt{
*/ J*5 )g
public void sort(int[] data) { `o)rAD^e
for(int i=data.length/2;i>2;i/=2){ %F]4)XeW-+
for(int j=0;j insertSort(data,j,i); oj;Rh!O
} josc
} MXq+aS{
insertSort(data,0,1); m\O<Yc keA
} 6;"jq92in*
+MvcW.W~
/** Qis[j-?:
* @param data u
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* @param j _.KKh62CN
* @param i Uf1i"VY
*/ V80g+)|
private void insertSort(int[] data, int start, int inc) { *[9FPya
int temp; ~K&ko8
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); iYEhrb
} -}AAA*P
} U4w^eWzP
} xi
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~C\R!DN,
} ,Hlbl}.ls
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快速排序: ,73J#
/2Y t\=S=
package org.rut.util.algorithm.support; LK-2e$1
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import org.rut.util.algorithm.SortUtil; <]2X~+v
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/** lc?9B
* @author treeroot 7y""#-}V[r
* @since 2006-2-2 )! Jo7SR
* @version 1.0 yM`J+tq
*/ ]4^9Tw6
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public class QuickSort implements SortUtil.Sort{ ds}: t.3}6
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/* (non-Javadoc) )*}2L_5]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A NR?An
*/ _a|-_p
public void sort(int[] data) { airg[dK
quickSort(data,0,data.length-1); p6VS<L
} Zi<Y?Vm/,O
private void quickSort(int[] data,int i,int j){ zy^t95/m
int pivotIndex=(i+j)/2; ecfw[4B`
file://swap G~b/!clN
SortUtil.swap(data,pivotIndex,j); o
EXN$SIs
4! ]28[2B6
int k=partition(data,i-1,j,data[j]); ixm-wZI
SortUtil.swap(data,k,j); (,*e\o
if((k-i)>1) quickSort(data,i,k-1); 7:awUoV8f
if((j-k)>1) quickSort(data,k+1,j); 2K[Y|.u8>q
)zzZYs&|
} Q"itV&d,
/** &Azfpv
* @param data Cak`}J 2
* @param i U.g7' `Z<
* @param j xn|M]E1)
* @return MKMWHGN
*/ BC.~wNz6
private int partition(int[] data, int l, int r,int pivot) { m?G@#[
l
do{ ]06orBV
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); uJhB>/Og
SortUtil.swap(data,l,r); $2I^ ;5r[
} 4BF
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while(l SortUtil.swap(data,l,r); L+VqTt
return l; )nE=H,U?y
} \JjZ _R
;:nx6wi
} O1]L4V1iH
1X.E:
改进后的快速排序: QfPsF@+-`7
k;BXt:jDq
package org.rut.util.algorithm.support; Z'=:Bo{
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import org.rut.util.algorithm.SortUtil; sKDsps^$
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/** &/wd_;d^A
* @author treeroot Dfz3\|LJ
* @since 2006-2-2 3'3E:}o|
* @version 1.0 55LW[Pc
*/ @s7ZfV??
public class ImprovedQuickSort implements SortUtil.Sort { N(ov.l;
[9N>*dKB
private static int MAX_STACK_SIZE=4096; !C]2:+z-MF
private static int THRESHOLD=10; 'Z;8-1M?O
/* (non-Javadoc) :]]#X
~J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X0\O3l*j
*/ 5 1&||.
public void sort(int[] data) { olLVT<
int[] stack=new int[MAX_STACK_SIZE]; q%&JAX=
X"hdCY%
int top=-1; pb8sx1.j;
int pivot; 9feVy\u
int pivotIndex,l,r; q)N]*~
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stack[++top]=0; KAkD" (!
stack[++top]=data.length-1; =Pj+^+UM
|-+ IF,j
while(top>0){ B=!&rKF
int j=stack[top--]; <?8aM7W7
int i=stack[top--]; z.d1>w
YL[n85l>1
pivotIndex=(i+j)/2; ?F=^&
v8
pivot=data[pivotIndex]; *.F^`]yz
STln_'DF'
SortUtil.swap(data,pivotIndex,j); ."X}A
t
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file://partition d1]1bN4`"0
l=i-1; mc
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r=j; p<[gzmU9\b
do{ E^K<b7
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); PPpq"c
SortUtil.swap(data,l,r); B
r`a;yT
} (D5sJ$&E@\
while(l SortUtil.swap(data,l,r); h&|PHI
SortUtil.swap(data,l,j); Mn>/\e
a%g |E'\Jw
if((l-i)>THRESHOLD){ O-uno{Fd*
stack[++top]=i; uE'O}Y95
stack[++top]=l-1; b@s6jNhVO^
} ./l^Iz&0
if((j-l)>THRESHOLD){ v^0*{7N'
stack[++top]=l+1; f\+ E&p.
stack[++top]=j; .m gm1zz
} 70Z#Ej
/BN_K8nb`
} fex<9'e
file://new InsertSort().sort(data); \img
insertSort(data); r `;_ #&b
} _/c1b>kcso
/** ovXU +8
* @param data *r90IS}A$2
*/
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private void insertSort(int[] data) { tg~@(IT}j
int temp; nhdOo
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >))f;$D=
} /XVjcD66c
} y3+iADo.p
} L^E#"f
QKB*N)%6
} Y?'Krw `
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归并排序: KkJrh@lk
93[&'
package org.rut.util.algorithm.support; '$q=r x
=:"wU
import org.rut.util.algorithm.SortUtil; gVscdg5
:w,#RcW
/** UFSbu5 j
* @author treeroot uB@~x Q_V
* @since 2006-2-2 WeiDg,]e$b
* @version 1.0 |PNPOj0
*/ E;MelK<8(
public class MergeSort implements SortUtil.Sort{ })F.Tjf*
f`W)Z$fN5
/* (non-Javadoc) )Vf!U"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G4;5$YGG
*/ Abc%VRsT
public void sort(int[] data) {
*}h#'+
int[] temp=new int[data.length]; - _?U/k(Hi
mergeSort(data,temp,0,data.length-1); x>!bvZ2
} '>:c:Tewy
S.,5vI"s,
private void mergeSort(int[] data,int[] temp,int l,int r){ Cm"7f!(#
int mid=(l+r)/2; oniVC',
if(l==r) return ; Jk=_8Xvr`
mergeSort(data,temp,l,mid); PP-U.
mergeSort(data,temp,mid+1,r); ^&Vj m
for(int i=l;i<=r;i++){ FGey%:p9$
temp=data; <y2HzBC
} +5i~}Q!
int i1=l; 2L(\-]%f
int i2=mid+1; 7.y35y
for(int cur=l;cur<=r;cur++){ mDdL7I
if(i1==mid+1) n@te.,?A"
data[cur]=temp[i2++]; mMOjV_
else if(i2>r) F%ffnEJg
data[cur]=temp[i1++]; MXa(Oi2Gg
else if(temp[i1] data[cur]=temp[i1++]; j;yKL-ycB
else p>=i'~lQ6
data[cur]=temp[i2++]; V'^E'[Dd{
} /UG]hJ-wn
} vrq5 +K&||
uc>]-4
} w!|jL
$5L
or
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改进后的归并排序: uA[c$tBe
p#aB0H3
package org.rut.util.algorithm.support; zL!}YR@&u"
Z{}+7P
import org.rut.util.algorithm.SortUtil; evvv&$&
s+<`iH9Hm
/** K41Gn
* @author treeroot Dq[Z0"8
* @since 2006-2-2 N?s`a;Q[=
* @version 1.0 Whl^~$+f
*/ Wl0p-h
public class ImprovedMergeSort implements SortUtil.Sort { mJ>msI
@
G0Y]-*1
private static final int THRESHOLD = 10; f\vMdY
V\nj7Gr:sF
/* 8pXqgIbmb
* (non-Javadoc) 7h#*djef
* tjg?zlj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XGb*LY+Db6
*/ x8!uI)#tS
public void sort(int[] data) { lj /IN[U/
int[] temp=new int[data.length]; GS&I6
mergeSort(data,temp,0,data.length-1); Q2 Dh(
} _$KEE|9
^AF~k#R
private void mergeSort(int[] data, int[] temp, int l, int r) { (B0QBDj!
int i, j, k; 9]%2Yb8SC
int mid = (l + r) / 2; ~%L=<TBAc
if (l == r) tx7B?/5D
return; {BY(zsl
if ((mid - l) >= THRESHOLD) %n^ugm0B
mergeSort(data, temp, l, mid); *.
1S
else LeV";=_n
insertSort(data, l, mid - l + 1); 7/zaf
if ((r - mid) > THRESHOLD) @TJ2
|_s6]
mergeSort(data, temp, mid + 1, r); j6WDh}#
else \Mzr[dI
insertSort(data, mid + 1, r - mid); N4l}5(e
@|:yK|6O
for (i = l; i <= mid; i++) { muMd9\p
temp = data; qVssw* GDB
} 88KQ) NU
for (j = 1; j <= r - mid; j++) { ^c]c`w
temp[r - j + 1] = data[j + mid]; ?vP6~$*B
} "*LQr~k~}
int a = temp[l]; y!c<P,Lt3f
int b = temp[r]; '#a;n
for (i = l, j = r, k = l; k <= r; k++) { >dJ[1s]
if (a < b) { 1i&|}"
data[k] = temp[i++]; to;^'#B
a = temp; <+UJgB
A-
} else { H8kB.D[7Q
data[k] = temp[j--]; pQi |PQq
b = temp[j]; .I0M'L~!/L
} 7Ue&y8Yf
} w7c0jIf{
} XS$#\UQ
:_|Xr'n`A
/** ojyP.R
* @param data d&lT/S
* @param l S$=caZ?
* @param i -/:!AxIH
*/ NiYT%K%
private void insertSort(int[] data, int start, int len) { 5<M$ XT
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); +;,X?E] g
} %\L{Ud%7
} 5+2qx)FZ
} :F_>`{
} '~VF*i^4
rZ&li/Z
堆排序: WRrg5&._q
z31g"
package org.rut.util.algorithm.support; nRyx2\Py+
y eam-8
import org.rut.util.algorithm.SortUtil; ,Jx.Kj.,
\opcn\vW
/** .X5A7 m
* @author treeroot F:sUGM,
* @since 2006-2-2 {e5-
* @version 1.0 A2!pbeG
*/ M8IU[Pz4
public class HeapSort implements SortUtil.Sort{ 8JXS:J.|v
#qARcxbK|
/* (non-Javadoc) _>bk'V7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TK0WfWch
*/ >)HKruSW.
public void sort(int[] data) { BMtk/r/
MaxHeap h=new MaxHeap(); X|yVRQ?F`
h.init(data); $b[Ha{9(v
for(int i=0;i h.remove(); R8 LHwRQ
System.arraycopy(h.queue,1,data,0,data.length); }:Y)DH%u
} yMD3h$w3a
CM6! 1 7
private static class MaxHeap{ [{>3"XJ'
FOteNQTj
void init(int[] data){ \t%iUZ$
this.queue=new int[data.length+1]; '#>Fe`[
for(int i=0;i queue[++size]=data; `.Zm}'
fixUp(size); 1,7
}ah_
} <rvM)EJv|
} hkRqtpYK
OdOn wY
private int size=0; /([a%,DI
^M\X/uq$E
private int[] queue; WM%w_,Z
#xfav19{.
public int get() { EnmMFxu<
return queue[1]; &-!$qUli
} G .$KP
fQ1Dp
public void remove() { I
Bko"|e@
SortUtil.swap(queue,1,size--); pWn]$HaoG
fixDown(1); M& )yr^
} i(ZzE
file://fixdown HCx0'|J
private void fixDown(int k) { 8Zy*#[-
int j; 4l>U13~#
while ((j = k << 1) <= size) { Z|fi$2k0!
if (j < size %26amp;%26amp; queue[j] j++; 4TyzD%pOw
if (queue[k]>queue[j]) file://不用交换
{?q`9[Z
break; ^/cqE[V~,
SortUtil.swap(queue,j,k); .V\~#Ro$G
k = j; hi4-Z=pl
} &M tF
} [mj=m?j
private void fixUp(int k) { cB_9@0r[S
while (k > 1) { J@QOF+ &
int j = k >> 1; DliDBArxZ
if (queue[j]>queue[k]) aHb&+/HZ
break; gvPHB+#A
SortUtil.swap(queue,j,k); S(^YTb7
k = j; &kn?=NW
} BS?i!Bm 7
} 6pt|Crvu
R+!oPWfb
} Y;iI=U
]
_W'-B
} B.KK@
CEBu[TT/9
SortUtil: O9m sPb:
zo("v*d*q
package org.rut.util.algorithm; I[b{*g2Zw
F/,6Jh
import org.rut.util.algorithm.support.BubbleSort; "kC6G%
import org.rut.util.algorithm.support.HeapSort; &ld<fa(w+2
import org.rut.util.algorithm.support.ImprovedMergeSort; :5'hd^Q
import org.rut.util.algorithm.support.ImprovedQuickSort; [k75+#'
import org.rut.util.algorithm.support.InsertSort; Qmb+%z
import org.rut.util.algorithm.support.MergeSort; ;JgSA&'e
import org.rut.util.algorithm.support.QuickSort; EQk omjv
import org.rut.util.algorithm.support.SelectionSort; 4sX?O4p
import org.rut.util.algorithm.support.ShellSort; a8v\H8@X
&
P%#
/** j}K3YfH
* @author treeroot T!Tp:&O-
* @since 2006-2-2 (/Jy9=~
* @version 1.0 t=My=pG
*/ 1r*yYm'
public class SortUtil { s&+`>
public final static int INSERT = 1; q(WGvl^r
public final static int BUBBLE = 2;
Lsai8 B
public final static int SELECTION = 3; .gNziDO
public final static int SHELL = 4; Ut C<TBr
public final static int QUICK = 5; \So)g)K
public final static int IMPROVED_QUICK = 6; [O} D^qp
public final static int MERGE = 7; }'86hnW
public final static int IMPROVED_MERGE = 8; Z\]LG4N?
public final static int HEAP = 9; }eI9me@Aa
!)CY\c4}d>
public static void sort(int[] data) { |`kkmq
sort(data, IMPROVED_QUICK); MRZN4<}9
} t-n'I/^5
private static String[] name={ c6=XJvz
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 3 ]@wa!`
}; U3-MvI,Q
LOu9 #w"
private static Sort[] impl=new Sort[]{ qT:`F
new InsertSort(), +?*.Emzl@
new BubbleSort(), J5O/c,?g
new SelectionSort(), '66nqJb*
new ShellSort(), QFN 9j
new QuickSort(), M?;YpaSe+
new ImprovedQuickSort(), 90,UhNz9D
new MergeSort(), H3pZfdh?w
new ImprovedMergeSort(), g;OR{
new HeapSort() 44t;#6p@%>
}; b$pCp`/MT
lp5'-Jo
public static String toString(int algorithm){ 1}SON4U
return name[algorithm-1]; k_Sm ep
} 7q 5 \]J[
?)-anoFyVW
public static void sort(int[] data, int algorithm) { ?' mP`9I
impl[algorithm-1].sort(data); 69Z`mR
} j9w{=( MV
+W$uHQq
public static interface Sort { -UAMHd}4
public void sort(int[] data); <Wj/A/
} TEGg)\+D>
Tc>g+eS
public static void swap(int[] data, int i, int j) { 0,):;OI
int temp = data; jq_4x[
data = data[j]; jeO`45O
data[j] = temp; 0"N4WH O
} }5z!FXB
} F x$W3FIO]