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。 =jS$piw.
插入排序: *x]*%
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package org.rut.util.algorithm.support; "M /Cl|z
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import org.rut.util.algorithm.SortUtil; oaPWeM+
/** 5G(dvM-n
* @author treeroot Yo'Y-h#
* @since 2006-2-2 |mHf7gCX
* @version 1.0 oD\t4]?E
*/ 2Vf242z_
public class InsertSort implements SortUtil.Sort{ yTK3eK
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/* (non-Javadoc) Aaq%'07ihW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I=<Qpd4
*/ i '*!c
public void sort(int[] data) { n^hkH1vY
int temp; ">3t+A
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1i~q~O,
} Z}>F
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}
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} !5?_)
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} .s,04xW\
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冒泡排序: }d>.Nj#zh
%*npLDi
package org.rut.util.algorithm.support; p}pd&ut1
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import org.rut.util.algorithm.SortUtil; 3c,4 wyn
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/** 39
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* @author treeroot U!uJ )mm
* @since 2006-2-2 E0fMFG^P
* @version 1.0 esBv,b?*
*/ !u8IZpf
public class BubbleSort implements SortUtil.Sort{ S5ai@Ksf
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/* (non-Javadoc) N"G\H<n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r63l(
*/ w2X HY>6];
public void sort(int[] data) { z[<Na3]
int temp; Bt,'g*Cs
for(int i=0;i for(int j=data.length-1;j>i;j--){ js Z"T
if(data[j] SortUtil.swap(data,j,j-1); RN[x\" ,
} lMu-,Z="
} 5Ww,vSCV)
} M/9[P*
VE
} \<T7EV.
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} \7*|u
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选择排序: #\^=3A|b
phf{b+'#X
package org.rut.util.algorithm.support; ,VEE<*'X
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import org.rut.util.algorithm.SortUtil; `5wiXsNjLY
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/** ^9 LoxU-
* @author treeroot oA~0"}eS
* @since 2006-2-2 _/}$X"4
* @version 1.0 r*$f^T!|
*/ %k['<BYG<
public class SelectionSort implements SortUtil.Sort { S,Q^M
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/* .$W}
* (non-Javadoc) @sZ7Ka
* X@tA+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I(7iD. ^:
*/ ocK4Nxs
public void sort(int[] data) { ]S@T|08b
int temp; #rGCv~0*l
for (int i = 0; i < data.length; i++) { W5Pur
lu?
int lowIndex = i; 2}/r>]9^-
for (int j = data.length - 1; j > i; j--) { Vq`/]&
if (data[j] < data[lowIndex]) { p=> +3
lowIndex = j; cQThpgha
} O{\<Izm`D
} VBDb K|
SortUtil.swap(data,i,lowIndex); <D)@;A
} o&@ y^<UQ
} <bg6k . s
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} 2YWO'PL
qM26:kB{
Shell排序: Pp69|lxV=k
SnXM`v,
package org.rut.util.algorithm.support; >.od(Fh{l|
8,RqhT)2#
import org.rut.util.algorithm.SortUtil; H*3u]Ebh
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/** PHIc7*_
* @author treeroot *?uUP
* @since 2006-2-2 ;'V[8`Z@
* @version 1.0 o~9*J)X5i
*/ i>CR{q
public class ShellSort implements SortUtil.Sort{ >!" Sr3,L
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/* (non-Javadoc) W1xPK*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tK{#kApHGG
*/ <zvtQ^{]
public void sort(int[] data) { _4SZ9yu
for(int i=data.length/2;i>2;i/=2){ hslT49m>
for(int j=0;j insertSort(data,j,i); lV4TFt,
} r1RM7y
} 2h*aWBLk
insertSort(data,0,1); Z"w}`&TC$^
} 4h--x~ @
04v
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/** VZ`YbY
* @param data tS3&&t
* @param j I/A%3i=H
* @param i g5Io=e@s
*/ uTrzC+\aU
private void insertSort(int[] data, int start, int inc) { }{:}K<
int temp; /`aPV"$M
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Lwf[*n d
} '" &*7)+g*
} "oZ_1qi<
} /=9dX;
#
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} F 8sOc&L
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快速排序: r]D>p&4
}u0&> k|y
package org.rut.util.algorithm.support; fiSX( 9
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import org.rut.util.algorithm.SortUtil; WpE"A
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/** nC??exc
* @author treeroot eUCBQK
* @since 2006-2-2 7iM@BeIf
* @version 1.0 BLqK5~
*/ BSd.7W;cS=
public class QuickSort implements SortUtil.Sort{ _G<Wq`0w)
G}NqVbZ9]
/* (non-Javadoc) ><S2o%u~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5pY|RV6:
*/ DQV9=
public void sort(int[] data) { &1yErGXC
quickSort(data,0,data.length-1); E
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} ls9Y?
private void quickSort(int[] data,int i,int j){ y<R5}F
int pivotIndex=(i+j)/2; Da6l=M
file://swap |)%H_TXTy
SortUtil.swap(data,pivotIndex,j); 46 \!W(O~y
'4~I%Z7L
int k=partition(data,i-1,j,data[j]); a"g\f{v0AR
SortUtil.swap(data,k,j); zn^ G V
if((k-i)>1) quickSort(data,i,k-1); Rh
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if((j-k)>1) quickSort(data,k+1,j); gPd,
if\`M'3Xx
} ){,Mv:#+T
/** w}$;2g0=a<
* @param data FrLv%tK|
* @param i UEYJd&n0CB
* @param j C; U4`0=8
* @return 3syA$0TZt
*/ a;~< iB;3"
private int partition(int[] data, int l, int r,int pivot) { /#eS3`48
do{ "66#F
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); IFa~`Gf [
SortUtil.swap(data,l,r); BAi0w{
} w6mYLK%
while(l SortUtil.swap(data,l,r); ZzR0k
return l; y[S9b(:+
} yqtHlz%
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} xkSVD6Km
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改进后的快速排序: [Ran/D\.
OBF-U]?Y
package org.rut.util.algorithm.support; toOdL0hCe
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import org.rut.util.algorithm.SortUtil; N;>s|ET
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/** 7,alZ"%W
* @author treeroot 4,Uqcw?!F'
* @since 2006-2-2 {36N=A
* @version 1.0 {:n1|_r4Z
*/ seP h%Sa_
public class ImprovedQuickSort implements SortUtil.Sort { 1Id"|/b%$
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private static int MAX_STACK_SIZE=4096; {KEmGHC4R
private static int THRESHOLD=10; H%Lln#
/* (non-Javadoc) m,]9\0GUd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9p^gF2?k
*/ ZIh)D[n
public void sort(int[] data) { Clap3E|a
int[] stack=new int[MAX_STACK_SIZE]; Ja/
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int top=-1; TpYh)=;k
int pivot; Pl`Nniy
int pivotIndex,l,r; UL%a^' hR
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stack[++top]=0; pY\=f0]
stack[++top]=data.length-1; *1_Ef).
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while(top>0){ ;3bUgI}.J
int j=stack[top--]; 3QdCu<eBZ
int i=stack[top--]; em- <V5fb
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pivotIndex=(i+j)/2; ^/x\HGrw
pivot=data[pivotIndex]; Z^_zcH'
n)35-?R/M
SortUtil.swap(data,pivotIndex,j); 'W("s
%yl17:h#
file://partition A
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l=i-1; a <F2]H=J
r=j; 0B}2~}#
do{ 0O]v|
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ;, \!&o6
SortUtil.swap(data,l,r); `(I$_RSE")
} *uy<Om
while(l SortUtil.swap(data,l,r); O;}K7rSc
SortUtil.swap(data,l,j); [U"/A1p
JB.U&
if((l-i)>THRESHOLD){ uq54+zC
stack[++top]=i; b8vZ^8tBV
stack[++top]=l-1; 7~k=t!gTY
} t&EY$'c
if((j-l)>THRESHOLD){ Nqz6_!
stack[++top]=l+1; 0bIgOLP
stack[++top]=j; n:k4t
} Unb3
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rQ U6*f
} %9S0!h\
file://new InsertSort().sort(data); 5)h fI7{d
insertSort(data); =]"I0G-s!
} |z:4T%ES
/** {c*5 )x!
* @param data CHD.b%_|
*/ L2~'Z'q
private void insertSort(int[] data) { T"gk^.
int temp; a1_ o
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6Q_A-X3hk
} ev_' .t'
} Q[|*P ] w
} H3ovF
$p$p C/:%
} iJmzVR+
fz2}M:u
归并排序: E\;%,19Ob
&%t&[Se_~
package org.rut.util.algorithm.support; dB0
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import org.rut.util.algorithm.SortUtil; be5N{lPT@;
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/** ;_E|I=%'E
* @author treeroot 8VO];+N
* @since 2006-2-2 K(d+t\ca
* @version 1.0 ~<_WYSzS
*/ -%^'x&e
public class MergeSort implements SortUtil.Sort{ Z|ZB6gP>h1
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/* (non-Javadoc) ;ny 9q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B<,7!:.II
*/ kOq8zYU|
public void sort(int[] data) { >s0![c oz
int[] temp=new int[data.length]; i27)c)\BM
mergeSort(data,temp,0,data.length-1); b`^Q ':^A
} Qh-:P`CN
WY!4^<|w"
private void mergeSort(int[] data,int[] temp,int l,int r){ f#w
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int mid=(l+r)/2; 1KBGML-K3
if(l==r) return ; S9r+Nsn
mergeSort(data,temp,l,mid); v_WQ<G?
mergeSort(data,temp,mid+1,r); U/|JAg#
for(int i=l;i<=r;i++){ D>HbJCG4^
temp=data; $&KkZ
} |d*a~T0
int i1=l; lmD[Cn
int i2=mid+1; n9`]}bnX
for(int cur=l;cur<=r;cur++){ G43r85LO
if(i1==mid+1) {P_7AM
data[cur]=temp[i2++]; Fkq^2o
]
else if(i2>r) ;z N1Qb
data[cur]=temp[i1++]; +{I" e,Nk
else if(temp[i1] data[cur]=temp[i1++]; %%>nM'4<
else |\G^:V[.
data[cur]=temp[i2++]; 1+XM1(|c`
} cGdYfi
} (}.MB3`#C
p3{Ff5FZ
} DZ\K7-
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改进后的归并排序: ?2dI8bG
YhS_ ,3E
package org.rut.util.algorithm.support; ^m&P0
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import org.rut.util.algorithm.SortUtil; 32%Fdz1S
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/** K5BL4N
* @author treeroot #d-zH:uq
* @since 2006-2-2 &vn2u bauS
* @version 1.0 +`g&hO\W
*/ TB+k[UxB
public class ImprovedMergeSort implements SortUtil.Sort { NMf#0Nz-
g=@d!]Z~[
private static final int THRESHOLD = 10; ^+CHp(X
~!8j,Bqs+z
/* vlE]RB
* (non-Javadoc) 7}6CUo
* ms&1P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0H_uxkB~
*/ A1,q3<<D%
public void sort(int[] data) { 0BhcXHt
int[] temp=new int[data.length]; ]W`?0VwF
mergeSort(data,temp,0,data.length-1); ,$>l[G;Bm
} X:;x5'|
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private void mergeSort(int[] data, int[] temp, int l, int r) { tH.L_< N
int i, j, k; QeuM',6R
int mid = (l + r) / 2; =|ODa/2p
if (l == r) [3nWxFz$R
return; {B4qeG5
if ((mid - l) >= THRESHOLD) g3>>gu#0DC
mergeSort(data, temp, l, mid); hd~#I<8;2
else vO~Tx
insertSort(data, l, mid - l + 1); CEc(2q+%i
if ((r - mid) > THRESHOLD) ]77f`<q<}!
mergeSort(data, temp, mid + 1, r); [WG\wj.
else *qk7e[IP
insertSort(data, mid + 1, r - mid); liH#=C8l*%
Dm5 Uy^F}
for (i = l; i <= mid; i++) { Y7r;}^+WY
temp = data; }l[e@6r F
} U$& '> %#
for (j = 1; j <= r - mid; j++) { vIOGDI>
temp[r - j + 1] = data[j + mid]; K.Y`/<
} ,1N|lyV
int a = temp[l]; /o 'lGvw
int b = temp[r]; :W1?t*z:[
for (i = l, j = r, k = l; k <= r; k++) { .'<K$:8@|
if (a < b) { H${L F.8
data[k] = temp[i++]; Y_+#|]=$B
a = temp; 'o#oRK{#
} else { 9*ZlNZ
data[k] = temp[j--]; F=1 #qo<?
b = temp[j]; 1(IZ,*i
} P@vUQ
} L-D4>+
} PDuBf&/e
%
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/** ~o"=4q`>
* @param data 8{2
* @param l o9"?z
* @param i U{M3QOF
*/ @=dv[P"jn
private void insertSort(int[] data, int start, int len) { x0(bM g>7
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 2(@2z[eKr
} xwof[BnEZ
} |`#fX(=
} E(|A"=\
} #5)/B
T[k$ [
堆排序: |y eQz
0h*Le
package org.rut.util.algorithm.support; 6` TwP\!$/
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import org.rut.util.algorithm.SortUtil; )-Hs]D:
}" vxYB!h3
/** Qa )+Tv
* @author treeroot 2WFZ6
* @since 2006-2-2 $a*7Q~4
* @version 1.0 7N[".V]c
*/ NOXP}M
public class HeapSort implements SortUtil.Sort{ `HXv_9
zH}3J}
/* (non-Javadoc) 5buW\_G)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iiIns.V
*/ _Ik?WA_;
public void sort(int[] data) { 2RX]~}
MaxHeap h=new MaxHeap(); b^h_`
h.init(data); a- rR`
for(int i=0;i h.remove(); @`4T6eL5
System.arraycopy(h.queue,1,data,0,data.length); ^WO3,
} :) lG}c
|di(hY|
private static class MaxHeap{ S=!WFKcJR
<7\j\`
void init(int[] data){ i3N{Dt
this.queue=new int[data.length+1]; \~E?;q!
for(int i=0;i queue[++size]=data; WT<}3(S'?
fixUp(size); v-3VzAd=*&
} K_)~&Cu*'
}
^rVHaI
U`qC.s(L
private int size=0; hFi gY\$m
bt) C+|i
private int[] queue; U+x^!{[/
JVX)>2&$
public int get() {
h{^v756L
return queue[1]; )4=86>XJT
} OA&'T*)-A6
E .Xp\Dm71
public void remove() { M0fN[!*z
SortUtil.swap(queue,1,size--); iv~R4;;)
fixDown(1); vY m:V:7Y2
} "@eGgQ
file://fixdown I 0~'z f
private void fixDown(int k) { .h=n [`RB
int j; 1Z< ^8L<
while ((j = k << 1) <= size) { 8>eYM
if (j < size %26amp;%26amp; queue[j] j++; ;um)JCXz
if (queue[k]>queue[j]) file://不用交换 l&+O*=#Hh
break; A[+)PkR
SortUtil.swap(queue,j,k); *HR
pbe2
k = j; ?K[Y"*y2
} ay7\Ae]
} `CS\"|z
private void fixUp(int k) { FE!jN-#
while (k > 1) { Ur
xiaE
int j = k >> 1; ;m7G8)I
if (queue[j]>queue[k]) TUnAsE/J&
break; 'cpm 4mT
SortUtil.swap(queue,j,k); &>Ve4!i
q
k = j; Hh^ "c}
} =\%ER/
} dXh[Ea^
vYV!8o.I
} B<SE|~\2
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} #("M4}~
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SortUtil: $UH:r
y<FC7
package org.rut.util.algorithm; uMw6b=/U
Q&]|W
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import org.rut.util.algorithm.support.BubbleSort; w/*G!o-<
import org.rut.util.algorithm.support.HeapSort; toPbFU'
import org.rut.util.algorithm.support.ImprovedMergeSort; 7?whxi Qs
import org.rut.util.algorithm.support.ImprovedQuickSort; D5c
8sB
import org.rut.util.algorithm.support.InsertSort; u @Ze@N%
import org.rut.util.algorithm.support.MergeSort; S=r0tao,!v
import org.rut.util.algorithm.support.QuickSort; TxPFl7,r
import org.rut.util.algorithm.support.SelectionSort; -orRmn6}
import org.rut.util.algorithm.support.ShellSort; %@vF%
2X\Pw
/** -H6[{WVW!
* @author treeroot wPM>-F
* @since 2006-2-2 IQO|)53)
* @version 1.0 >g{&Qx`&
*/ P_A@`eU0
public class SortUtil { wH o}wp
public final static int INSERT = 1; 1;( h0j
public final static int BUBBLE = 2; JW[6
^Rw
public final static int SELECTION = 3; D-BT`@~l
public final static int SHELL = 4; |iHMAo
public final static int QUICK = 5; g& e u
public final static int IMPROVED_QUICK = 6; EU[eG^/0@
public final static int MERGE = 7; dB_0B.
public final static int IMPROVED_MERGE = 8; J]TqH`MA
public final static int HEAP = 9; _l7_!Il_
`Jc/ o=]
public static void sort(int[] data) { rgVRF44X{
sort(data, IMPROVED_QUICK); P$U"y/
} H\QkU`b
private static String[] name={ W\zZ&*8$
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" We{@0K/O
}; MMFg{8
G*N[t w
private static Sort[] impl=new Sort[]{ `Qo37B2
new InsertSort(), Mm@G{J\\
new BubbleSort(), I%J>~=]n_
new SelectionSort(), z+yq%O
new ShellSort(), kZG .Id
new QuickSort(), ?) y}HF
new ImprovedQuickSort(), a|z-EKV
new MergeSort(), v]( Y n)#
new ImprovedMergeSort(), eI$V2
new HeapSort() <9,h!
}; MG vz-E1e
s9+):,dKP
public static String toString(int algorithm){ *Mhirz%iD
return name[algorithm-1]; ~".@mubt1$
} I.3~ctzu
V,rc&97
public static void sort(int[] data, int algorithm) { -E?:W`!
impl[algorithm-1].sort(data); o^~ZXF}
} ~g=&wT11
@\&j3A
public static interface Sort { $"vz>SuB
public void sort(int[] data); d2UidDU5qa
} F NPu
? #rXc%F
public static void swap(int[] data, int i, int j) { oY^I|FEOz
int temp = data; Yc]V+NxxQ
data = data[j]; K2Abu?
data[j] = temp; /7D5I\
} l48$8Mgrr
} 'UsR/h5T