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。 e_ epuki
插入排序: W)r|9G8T
IrCl\HQN
package org.rut.util.algorithm.support; ]lfufjj
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import org.rut.util.algorithm.SortUtil; HLDv{G'7
/** Zj]tiN f\"
* @author treeroot h/\Zq
* @since 2006-2-2 %IVM1
* @version 1.0 VO:
*/ E]~#EFc
public class InsertSort implements SortUtil.Sort{ 83V\O_7j
h='&^1
/* (non-Javadoc) ?SYmsaSr5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) { /!ryOA65
*/ K{I "2c
public void sort(int[] data) { ZKt{3P
int temp; >wqWIw.w>
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2<J2#}+\
} -2}ons(
} '>|Kd{J0
} <Ffru?o4j
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}
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冒泡排序: ~P}ng{x4z
ux^rF
package org.rut.util.algorithm.support; Da[#X`Kp$
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import org.rut.util.algorithm.SortUtil; ImB5F'HI$
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/** GBS+ 4xL|
* @author treeroot Q1kM 4Up
* @since 2006-2-2 "\+\,C
* @version 1.0 a|y'-r90
*/ EY !o#m
public class BubbleSort implements SortUtil.Sort{ l2M(
u"7!EhX&
/* (non-Javadoc) ,\+N}F^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y<Ae_yLa
*/ WS4DzuZZ
public void sort(int[] data) { w#BT/6W&G
int temp; {C]tS5$Z
for(int i=0;i for(int j=data.length-1;j>i;j--){ ;=P!fvHk
if(data[j] SortUtil.swap(data,j,j-1); 8.wtv5eZ
} s4f{ziLp
} (8ct'Q ;
} '.%Omc
} 1)97AkN(O
<ir]bQT
} ^(T~ Q p
4,YL15.
选择排序: -e"kJd&V
(u@X5O(a
package org.rut.util.algorithm.support; WCqa[=v)t
hc]p^/H
import org.rut.util.algorithm.SortUtil; XLYGhM
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/** Z"Q9^;0%
* @author treeroot inq
{" 6
* @since 2006-2-2 {ktwX\z
* @version 1.0 Z{
9Io/
*/ T#Bj5H
public class SelectionSort implements SortUtil.Sort { %<O~eXY
u+6L>7t88I
/* 4kV$JV.l
* (non-Javadoc) plr3&T~,&S
* g%ys|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c1R[Hck
*/ 'vq0Tw5
public void sort(int[] data) { \v{HjqVkC
int temp; h'vBWtMa
for (int i = 0; i < data.length; i++) { hVFZQJ?cv
int lowIndex = i; <dXeP/1w`
for (int j = data.length - 1; j > i; j--) { 5V/]7>b1
if (data[j] < data[lowIndex]) { Bz%wV-
lowIndex = j; eQ[}ALIq
} 2zv:j7
} JXt_
SortUtil.swap(data,i,lowIndex); IZ Q*D)
} +l]>(k.2
} F]<2nb7
,5T1QWn^f
} Uhn3usK
#l9sQ-1Q
Shell排序: >-3>Rjo>
fceO|mSz_
package org.rut.util.algorithm.support; O^ &m
23'<R i
import org.rut.util.algorithm.SortUtil; +RiI5.$=Z
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/** v7hw% 9(=
* @author treeroot H _| re
* @since 2006-2-2 `6# s+JA[
* @version 1.0 +`$$^x
*/ Vvfd?G"
public class ShellSort implements SortUtil.Sort{ 2r+nr
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/* (non-Javadoc) U1rr=h
g
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H,7!"!?@N
*/ r%$\Na''
public void sort(int[] data) { :>H{?
for(int i=data.length/2;i>2;i/=2){ JFNjc:4{0
for(int j=0;j insertSort(data,j,i); FGm!|iI
} <7L-25 =
} 4?
rEO(SZ
insertSort(data,0,1); >@-.rkd(
} tehWGqx)
,":_CY4(
/** i],~tT|P
* @param data *mYGs )|
* @param j ;K4uu<e\
* @param i -r~9'aEs
*/ 9q[[
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private void insertSort(int[] data, int start, int inc) { '
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int temp; *%atE
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); X%B$*y5
} ,4-],~T
} ];=|))ky"
} ]n:R#55A
W(-son~I
} %@q2
M[-/ &;`f@
快速排序: qa8?bNd'f
~xws5n}F
package org.rut.util.algorithm.support; _c:th{*
:w4N*lV-
import org.rut.util.algorithm.SortUtil; 0r!F]Rm-^
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/** s%5XBI
* @author treeroot FBzsM7]j
* @since 2006-2-2 4&:|h 1
* @version 1.0 x[+bLlb
*/ x>A[~s"|N
public class QuickSort implements SortUtil.Sort{ "kIlxf3
)}_}D+2
/* (non-Javadoc) NMrf I0tbG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0Xn,q]@Z
*/ k!6m'}v
public void sort(int[] data) { qn}VW0!
quickSort(data,0,data.length-1); |}X[Yg=FG
} A
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private void quickSort(int[] data,int i,int j){ OekE]`~w
int pivotIndex=(i+j)/2; @2_E9{ T
file://swap 6 lEv<)cC
SortUtil.swap(data,pivotIndex,j); CqU ^bVs
34_
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int k=partition(data,i-1,j,data[j]); aQ&K a
SortUtil.swap(data,k,j); #nZPnc:
if((k-i)>1) quickSort(data,i,k-1); 6UqDpL7^U
if((j-k)>1) quickSort(data,k+1,j); K(Tej W#
l=$?#^^ /
} +4[9Eb'k=
/** |S:erYE,G
* @param data TDy$Mv=y
* @param i 6%wlz%Fp
* @param j 5EECr
\*
* @return #|=lU4Bf
*/ n5tsaU;
private int partition(int[] data, int l, int r,int pivot) { \uJ+~db=
do{ rD !GEU
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); )6o%6$c
SortUtil.swap(data,l,r); :C={Z}t/F
} j|XL$Q
while(l SortUtil.swap(data,l,r); q [+KQ,
return l; -"#jRP]#
} ~K(mt0T)
3 `NSSS
} n +2>jY
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改进后的快速排序: g{kjd2
yOk{l$+
package org.rut.util.algorithm.support; aH_FBY
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import org.rut.util.algorithm.SortUtil; oc[z dIk
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/** 7>AMzNj
* @author treeroot ]xbMMax
* @since 2006-2-2 {7_C|z:'p&
* @version 1.0 M(^ e)7a1
*/ DH4IF i>
public class ImprovedQuickSort implements SortUtil.Sort { 82 o|(pw
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private static int MAX_STACK_SIZE=4096; (''w$qq"D
private static int THRESHOLD=10; = U[$i"+
/* (non-Javadoc) O&VA79\UO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^nDa-J$
*/ :0bjPQj
public void sort(int[] data) { 5FsfJpw
int[] stack=new int[MAX_STACK_SIZE]; 8;,|z%rS"
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int top=-1; us.IdG
int pivot; =CjWPZShV
int pivotIndex,l,r; h*3{IHAQ
5Y@Hb!5D
stack[++top]=0; Xxj<Ai2
stack[++top]=data.length-1; XdnpL$0
%CUwD
while(top>0){ b7gN|Hw5 H
int j=stack[top--]; :z%Zur+n c
int i=stack[top--]; ZQ' |B
u7 <VD
pivotIndex=(i+j)/2; +k/=L9#e
pivot=data[pivotIndex]; btbuE
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SortUtil.swap(data,pivotIndex,j); ",aEN=+|hV
SQ'%a-Mct
file://partition 9 aK U}y
l=i-1; cxx8I
r=j; '+c@U~d*7
do{ lAo4)
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Y3-f68*(
SortUtil.swap(data,l,r); xZ
SDA8kS
} ]Z52L`k
while(l SortUtil.swap(data,l,r); }VHvC"
SortUtil.swap(data,l,j); ~&"'>C#
H wz$zF+R
if((l-i)>THRESHOLD){ }j!C+i
stack[++top]=i; 5'<mfY'B
stack[++top]=l-1; 2+*o^`%4P
} >\3N#S"PF
if((j-l)>THRESHOLD){ 6uX,J(V,
stack[++top]=l+1; 'QTa<Z)E
stack[++top]=j; U r8JG&,
} rX)_!mR
]u:Ij|.'y0
} kxmsrQ>av
file://new InsertSort().sort(data); tJGK9!MH{(
insertSort(data); {s6hi#R>
} }%^ 3
/** c6iFha;db
* @param data ^g.HJQ'vF
*/ [@]i_L[
private void insertSort(int[] data) { L=WKqRa>4
int temp; >X5RRSo
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Kk|)N3AV:
} ;*d?Qe:
} sLSH`Xy?5
} d ]#`?}
[<>%I#7ulG
}
@l&{ j
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归并排序: V?-2FK]
E?VOst&
package org.rut.util.algorithm.support; ]O0u.=1k
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import org.rut.util.algorithm.SortUtil; Q9Go}}n
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/** 0C6T>E7
* @author treeroot
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* @since 2006-2-2 i?|u$[^=+
* @version 1.0 JIf.d($
~:
*/ L[U?{
public class MergeSort implements SortUtil.Sort{ E5Ls/ HK
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/* (non-Javadoc) ]?NiY:v
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6=*n$l#}
*/ 3-)R'
public void sort(int[] data) { nB}eJD|
int[] temp=new int[data.length]; {s=c!08=
mergeSort(data,temp,0,data.length-1); t Q.%f:|
} Hr \vu`p$
R?Ch8mW.!
private void mergeSort(int[] data,int[] temp,int l,int r){ *@WBaN+
int mid=(l+r)/2; D}N4*L1
if(l==r) return ; WE+Szg(4x
mergeSort(data,temp,l,mid); }|nEbM]#
mergeSort(data,temp,mid+1,r); O>9-iqP>`d
for(int i=l;i<=r;i++){ 4.>y[_vu
temp=data; CX;
m8
} &3itBQF
int i1=l; a%QgL&_5
int i2=mid+1; Bp4#"y2
for(int cur=l;cur<=r;cur++){
lk=[Xo
if(i1==mid+1) di<g"8
data[cur]=temp[i2++]; s~c cx"HH
else if(i2>r) pi/&WMZ<
data[cur]=temp[i1++]; uX6rCokr
else if(temp[i1] data[cur]=temp[i1++]; dki3(
else )"63g
data[cur]=temp[i2++]; j#YVv c%
} gyU=v{].
} OUN"'p%%
Dj3,SJ*x
} 7_eV.'h
Qz$Wp*
改进后的归并排序: :zpT Gk8Z
`6PBV+]Vm3
package org.rut.util.algorithm.support; Z5`V\$
c]|Tg9AW
import org.rut.util.algorithm.SortUtil; QHtN_Q_F
FR\r/+n:t0
/** yP34h*0B
* @author treeroot lGJ&\Lv:
* @since 2006-2-2 <Rz[G+0S=
* @version 1.0 \\Z?v,XsS
*/ ?gjkgCbC#
public class ImprovedMergeSort implements SortUtil.Sort { @}'?o_/C
^C}f|{J
private static final int THRESHOLD = 10; 8SCXA9}
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/* !HXyvyDN
* (non-Javadoc) e'fo^XQn[
* F'ez{B\AX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vJ;0%;eu[!
*/ Ia:M+20n
public void sort(int[] data) { q~{O^,4S
int[] temp=new int[data.length]; "M,Hm!j
mergeSort(data,temp,0,data.length-1); Ctk1\quz
} B~ j3!?
{H
3wL
private void mergeSort(int[] data, int[] temp, int l, int r) { i\*
b<V
int i, j, k; !)`m mr
int mid = (l + r) / 2; >B.KI}dE
if (l == r) eXkpU7w;
return; ~Yre(8+M
if ((mid - l) >= THRESHOLD) ^ JU#_
mergeSort(data, temp, l, mid); UUvR>5@n
else ^Jc|d,u;s
insertSort(data, l, mid - l + 1); .8wF>
8
if ((r - mid) > THRESHOLD) mlz|KI~\F;
mergeSort(data, temp, mid + 1, r); ]v_u2f'
else .pblI
insertSort(data, mid + 1, r - mid); hS^8/]E={
_iu^VK,}
for (i = l; i <= mid; i++) { ~^o YPd52*
temp = data; $wk(4W8E
} )
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for (j = 1; j <= r - mid; j++) { 1.nYT*
temp[r - j + 1] = data[j + mid]; ;20sh^~
} [6nN]U~ Y
int a = temp[l]; z%$M
IC
int b = temp[r]; ~le:4qaX
for (i = l, j = r, k = l; k <= r; k++) { 6L-3cxqf\
if (a < b) { ^KQZ;[B
data[k] = temp[i++]; F*y7 4j,
a = temp; :]8!G- Z
} else { Q6CVMYT
data[k] = temp[j--]; = @ 1{LF;
b = temp[j]; | 8akp
} &E-q(3-
} eX'V#K#C
} Qgq VbJP"
+y 48.5
/** W'v
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* @param data RZ?abE8
* @param l /WI H#M
* @param i ~@"H\):/
*/ 1CS\1[E
private void insertSort(int[] data, int start, int len) { zTw<9 Nf
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 26=G%F6
} QF$s([
} IJLuu@kRm,
} UDlM?r:f
} s=<65
V" KuwM
堆排序: yxi* 4R
3E!3kSh|
package org.rut.util.algorithm.support; -.5R.~@
j$P`/-N
import org.rut.util.algorithm.SortUtil; 7H?lR~w
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/** , Q )
* @author treeroot <ti,Wn.
* @since 2006-2-2 }eSrJgF4M
* @version 1.0 CxrsP.
*/ yL23Nqe
public class HeapSort implements SortUtil.Sort{ E=ObfN"ge
Q3[nS(#Z/=
/* (non-Javadoc) oKPG0iM:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RAA,%rRhu(
*/ _lfS"ae
public void sort(int[] data) { 5
axt\
MaxHeap h=new MaxHeap(); 'N\nJz}
h.init(data); O]t)`+%q
for(int i=0;i h.remove(); y]uBVn'u
System.arraycopy(h.queue,1,data,0,data.length); [f]:hJi
} 88l{M[B2
"J2v8c
private static class MaxHeap{ MTn}]blH
Mz;KXP
void init(int[] data){ Eg1|Kg\&
this.queue=new int[data.length+1]; S"@@BQ#mf
for(int i=0;i queue[++size]=data; 07>D G#
fixUp(size); zRB LkrC
} S~^]ib0
} H5be 5
<WL] (-9I:
private int size=0; A9z3SJ\vXl
B+2.:Zn6
private int[] queue; -'Z-8
z h%b<
public int get() { ?&POVf>
return queue[1]; h3Nbgxa.
} J!yK/*sO,
@QDpw1;V'
public void remove() { j+2-Xy'
SortUtil.swap(queue,1,size--); jgBJs^JgYG
fixDown(1); |oR#j
`
} Iv?1XI=
file://fixdown }+F@A`Bm&
private void fixDown(int k) { \<\147&)r
int j; #_zj5B38E
while ((j = k << 1) <= size) { )9+H[
if (j < size %26amp;%26amp; queue[j] j++; vyT-!mC
if (queue[k]>queue[j]) file://不用交换 bs)Ro/7}
break; 9/O\769"'
SortUtil.swap(queue,j,k); M+7jJ?n
k = j; Cm-dos
} @`HW0Y_:
} *\^(-p~M
private void fixUp(int k) { !iUT Re
while (k > 1) { 5E2T*EXSh
int j = k >> 1; vH6.;j'^
if (queue[j]>queue[k]) yg"FF:^T
break; %%lJyLq'Vk
SortUtil.swap(queue,j,k); 3&B- w
k = j; cq8JpSB(
} ePTxuCf>
} m4G))||9Q
"4.A@XsY
} I1JF2 "{c
I %CrsEo
} hdYd2
j
Oo9'
SortUtil: _:!7M^IU
~P"o_b6,k
package org.rut.util.algorithm; c>wne\(5H
`|4k>5k
import org.rut.util.algorithm.support.BubbleSort; n{"a0O
import org.rut.util.algorithm.support.HeapSort; RHmT$^=
import org.rut.util.algorithm.support.ImprovedMergeSort; `?SLp
import org.rut.util.algorithm.support.ImprovedQuickSort; K/8TwB?I
import org.rut.util.algorithm.support.InsertSort; )%HIC@MM6
import org.rut.util.algorithm.support.MergeSort; E*QLw*H
import org.rut.util.algorithm.support.QuickSort; 'v5q/l
import org.rut.util.algorithm.support.SelectionSort; l_P90zm39!
import org.rut.util.algorithm.support.ShellSort; lOHW9Z
rf]x5%ij
/** 0*6Q8`I
* @author treeroot H"wIa8A
* @since 2006-2-2 C9eisUM
* @version 1.0 Kr+#)S
*/ 5X:3'*
public class SortUtil { /b410NP5
public final static int INSERT = 1; ."y tBF
public final static int BUBBLE = 2; kT:?1 w'
public final static int SELECTION = 3; j k&\{
public final static int SHELL = 4; [ZS.6{vr
public final static int QUICK = 5; jwheJG
public final static int IMPROVED_QUICK = 6; Y.%Vvg4z3
public final static int MERGE = 7; \og2\Oh&gH
public final static int IMPROVED_MERGE = 8; =D)ADZ\<r
public final static int HEAP = 9; 'Qg.D88
T[2<_ nn=
public static void sort(int[] data) { d"thM
sort(data, IMPROVED_QUICK); $}=r45e0K
} xp *d:
private static String[] name={ )*aAkM
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ~w}=Oby'y
}; Q<(aU{
2%)~E50U
private static Sort[] impl=new Sort[]{ m",G;VN
new InsertSort(), 6xu%M&ht
new BubbleSort(), f,ql8q(|J
new SelectionSort(), lHE+o;-
new ShellSort(), @@=,bO
new QuickSort(), bb$1zSA
new ImprovedQuickSort(), Is9.A_0h
new MergeSort(), $9Gra#
new ImprovedMergeSort(), Bk5ft4v-
new HeapSort() ,Bj]j -\Y
}; ,C|aiSh0-
T#HF!GH]
public static String toString(int algorithm){ TV}=$\D
return name[algorithm-1]; ?<^^.Si
} He&A>bA)z
kH=qJ3Z
public static void sort(int[] data, int algorithm) { boZ/*+t
impl[algorithm-1].sort(data); &LQfs4}a,
} |I3&a=,
5Hs!s+
public static interface Sort { v+CW([zAx#
public void sort(int[] data); &?k`rF9
} -o57"r^x
<80M$a
g
public static void swap(int[] data, int i, int j) { Pt'=_^Io
int temp = data; }MtORqK
data = data[j]; ^ tVIPH.R
data[j] = temp; lE3&8~2
} 2
S2;LB
} ;XXEvRk