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。 +=Yk-nJ
插入排序: bt0djJRw
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package org.rut.util.algorithm.support; V!H(;Tuuo
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import org.rut.util.algorithm.SortUtil; |o|gP8
/** z,M'Tr.1|
* @author treeroot n~9 i^
* @since 2006-2-2 GPMrs)J*!
* @version 1.0 tb:
*/ _,t&C7Yf;
public class InsertSort implements SortUtil.Sort{ M,ppCHy/$
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/* (non-Javadoc) l~ CZW*/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I>d I[U
*/ Wf_CR(
public void sort(int[] data) { |}%(6<
int temp; v?FhG
b~1
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Euqjxz
} #!wsD7;
} 9N<*S'Z
} ~NA1SZ{Y+
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} 4Fh&V{`W
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冒泡排序: tx gvVQ
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package org.rut.util.algorithm.support; <&KLo>B^
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import org.rut.util.algorithm.SortUtil; Q
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/** >pN;J)H
* @author treeroot 7N!tp,?
* @since 2006-2-2 zUNH8=U
* @version 1.0 10/x'#(
*/ Ri9Kr
public class BubbleSort implements SortUtil.Sort{ id3)6}
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/* (non-Javadoc) / *AJ+K._
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -*rHB&e
*/ bkxk
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public void sort(int[] data) { ?rky6
int temp; oo;;y,`8py
for(int i=0;i for(int j=data.length-1;j>i;j--){ IkiQOk
if(data[j] SortUtil.swap(data,j,j-1); c6f|y_2
} @< wYT$
} wwo(n$!\
} j!6elzg
} n9N#&Q"7m
B:B8"ODV
} a|8|@,
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选择排序: ~?2rGE
]jZiW1C*a
package org.rut.util.algorithm.support; (zjz]@qJ
bELIRM9
import org.rut.util.algorithm.SortUtil; jB5>y&+
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/** W^5<XX,ON
* @author treeroot X\o/i\ C}
* @since 2006-2-2 @^'G&%j
* @version 1.0 &G0l&8pa
*/ .WBI%ci
public class SelectionSort implements SortUtil.Sort { tniPEmeS
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/* JmnBq<&,0
* (non-Javadoc) 3Ne9%"
* i7i|370
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -iY9GN89c
*/ aQ32p4C
public void sort(int[] data) { ^2C0oX
int temp; XRClBTKF
for (int i = 0; i < data.length; i++) { IlcNT_
5a8
int lowIndex = i; Pd)K^;em
for (int j = data.length - 1; j > i; j--) { z\xiACIc
if (data[j] < data[lowIndex]) { BM|-GErE
lowIndex = j; %'RI3gy
} fO[Rf_
} HiQoRk
SortUtil.swap(data,i,lowIndex); l*F!~J3
} = 4BLc
} 73&]En
6V.awg,
} 8#X?k/mzU
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Shell排序: 6(ka"Vu~
&>&dhdTQ
package org.rut.util.algorithm.support; 4w;rl(s
g4~X#}:z$O
import org.rut.util.algorithm.SortUtil; 8O"x;3I9
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/** f}L>&^I)
* @author treeroot u@GRN`yn
* @since 2006-2-2 Kj~>&WU
* @version 1.0 XR{5]lKt_
*/ yq/[ /*7^
public class ShellSort implements SortUtil.Sort{ NmH}"ndv+
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/* (non-Javadoc) w/lXZg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Paae-EmC
*/ U@o2gjGN
public void sort(int[] data) { K*([9VZ
for(int i=data.length/2;i>2;i/=2){ _7-"VoX
for(int j=0;j insertSort(data,j,i); QVnO
} |#DC.Ga!
} 7bgnZ]r8t
insertSort(data,0,1); \SYPu,ZT
} &Iv\jhq
",MK'\E
/** aX>4Tw
* @param data xTa4.ZXg
* @param j "o\6k"_c>
* @param i hN>('S-cq
*/ ^BF@j4*~
private void insertSort(int[] data, int start, int inc) { wc<2Uc
int temp; ;']vY
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); .fio<mqi
} n4ds;N3Hd
} UPfFT^=y
} iFAoAw(
gE-w]/1zD5
}
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M9uH&CD6U
快速排序: H$k![K6Uj
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package org.rut.util.algorithm.support; zPX=MfF
@&~OB/7B:
import org.rut.util.algorithm.SortUtil; az:~{f*-
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/** +XU$GSw3(
* @author treeroot xWC\954
* @since 2006-2-2 %0ll4"
* @version 1.0 eZ8Y"i\!y
*/ *@\?}cX
public class QuickSort implements SortUtil.Sort{ XPc9z}/(e
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/* (non-Javadoc) p%1xj2 ?nN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7$q2v=tH_
*/ tF#b&za
public void sort(int[] data) { 42n@:5`{+
quickSort(data,0,data.length-1); ~aauW?
} X]+(c_i:hC
private void quickSort(int[] data,int i,int j){ *sc0,'0
int pivotIndex=(i+j)/2; f^[{k
{t
file://swap bMK#^ZoH
SortUtil.swap(data,pivotIndex,j); Y\z^\k
,p[\fT($]
int k=partition(data,i-1,j,data[j]); \,@Yl.,+
SortUtil.swap(data,k,j); V'HlAQr
if((k-i)>1) quickSort(data,i,k-1); 5CH-:|(;=
if((j-k)>1) quickSort(data,k+1,j); S`GXiwk
[B2>*UPl
} Hnd9T(UB
/** (!XYH@Mz<w
* @param data JR?
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* @param i w]o:c(x@
* @param j ^| FVc48{
* @return 6]@|7|N>X
*/ fwnYzd3
private int partition(int[] data, int l, int r,int pivot) { \Age9iz&
do{ :o.x=c B
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); V<~_OF
SortUtil.swap(data,l,r); B>p0FQ.
} rHC+nou
while(l SortUtil.swap(data,l,r); QC\,
return l; Mu_mm/U_
} N:PA/V^z
V:0uy>
} bgzT3KZ
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改进后的快速排序: Zgy2Pot
.qb_/#Bas
package org.rut.util.algorithm.support; <u x*r#a!d
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import org.rut.util.algorithm.SortUtil; |ZST
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/** fo!Lp*'0
* @author treeroot 7=QC+XSO
* @since 2006-2-2 b68G&z>
* @version 1.0 V\rIN}7
*/ #T$'.M
public class ImprovedQuickSort implements SortUtil.Sort { %_j?<h&
|;Se$AdT#
private static int MAX_STACK_SIZE=4096; )]>i>
private static int THRESHOLD=10; 9(N)MT5F
/* (non-Javadoc) li3PR$W V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cmr6,3_
*/ njwR~ aL`|
public void sort(int[] data) { )/+eLRN5G
int[] stack=new int[MAX_STACK_SIZE]; @KXz4PU
sS1J.R
int top=-1; o7@4=m}
int pivot; 9
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int pivotIndex,l,r; :,}:c%-^"
]UCk_zWsn1
stack[++top]=0; i k1L
stack[++top]=data.length-1; k`2B9,z
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while(top>0){ y_7XYT!w
int j=stack[top--]; \\R*V'e!
int i=stack[top--]; Z@.ol Y
}ygbgyLa
pivotIndex=(i+j)/2; #*>7X>,J
pivot=data[pivotIndex]; @k:f}-t
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SortUtil.swap(data,pivotIndex,j); 1<qVN'[
4|@FO}rK[l
file://partition 0LHiOav
l=i-1; Kz3h]/A.
r=j; j]F#p R}p
do{ [y=$2
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); MMxoKL
SortUtil.swap(data,l,r); vVAZSR#
} xeP;"J}
while(l SortUtil.swap(data,l,r); ZoNNM4M+
SortUtil.swap(data,l,j); QkCoW[sn
6ImV5^l
if((l-i)>THRESHOLD){ &;@b&p+
stack[++top]=i; Vm1 c-,)3
stack[++top]=l-1; $Op/5j
} {^$"/hj
if((j-l)>THRESHOLD){ HDW\S#
stack[++top]=l+1; 1:;&wf
stack[++top]=j; WJFTy+bD
} qq9tBCk
`.sIZku
} ^K77V$v
file://new InsertSort().sort(data); .k:&&sAz
insertSort(data); {z[HNSyRs
} O'& \-j 1
/** 1(;33),P8
* @param data <>*''^
*/ l&^[cR
private void insertSort(int[] data) { _9O }d
int temp; i2ml[;*,N
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); sm&rR=b
} Jm J,~_
} Aya;ycsgE
} /hEGk~
BE2\? q-
} y1"^S
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归并排序: Mi/'4~0Y
GLKN<2|2@y
package org.rut.util.algorithm.support; 5W]N]^v
wmcp`8w.
import org.rut.util.algorithm.SortUtil; TaHi+
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/** +zdq+<9X
* @author treeroot piiQ
* @since 2006-2-2 ah6F^Kpl{
* @version 1.0 %k;FxUKi
*/ (zLIv9$
public class MergeSort implements SortUtil.Sort{ q!oZ; $
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/* (non-Javadoc) g-V\s&}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dBq,O%$oq
*/
@Kb|
public void sort(int[] data) { e/ % ;
int[] temp=new int[data.length]; j&G~;(DY
mergeSort(data,temp,0,data.length-1); W4rw ;(\
} fi4/@tV?$L
%/4_|@<'
private void mergeSort(int[] data,int[] temp,int l,int r){ sK9h=J;F/
int mid=(l+r)/2; -qCJwz30
if(l==r) return ; ?>\]%$5o
mergeSort(data,temp,l,mid); $Q$d\Yvi
mergeSort(data,temp,mid+1,r); BLH3$*,H
for(int i=l;i<=r;i++){ ,l?76g
temp=data; Dp6"I!L<|
} 5~R{,]52
int i1=l; BiLreZ~"
int i2=mid+1; FivaCNA
for(int cur=l;cur<=r;cur++){ :ktX7p~
if(i1==mid+1) !/(}meZj
data[cur]=temp[i2++]; O>F.Wf5g
else if(i2>r) I8%'Z>E(
data[cur]=temp[i1++]; Cg\)BHv~
else if(temp[i1] data[cur]=temp[i1++]; ieF 0<'iF
else .-26 N6S
data[cur]=temp[i2++]; v*]Xur6e}
} YK+Z0ry
} <C`eZ}Qqv
r|F,\fF
} >E,L"&_j
BHE =Zo
改进后的归并排序: >]|^Ux,WZ
dvWlx]'
package org.rut.util.algorithm.support; ?'#;Y"RT
(X7yNIPfA
import org.rut.util.algorithm.SortUtil; Jsnmn$C
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/** ?#c@Ag%
* @author treeroot `V_/Cz_}D
* @since 2006-2-2 :3*oAh8|
* @version 1.0 %mvx}xV
*/ NGQIoKC
public class ImprovedMergeSort implements SortUtil.Sort { ]{U*+K%,J
6)<o O(
private static final int THRESHOLD = 10; i&Cqw~.H
tJ_@AcF
/* 4sE=WPKF#
* (non-Javadoc) -^
ayJ73
* $I0a2Z=dP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J& SuUh<
*/ z}N^`_ *
public void sort(int[] data) { &J@ZF<Ib
int[] temp=new int[data.length]; yWk:u 5
mergeSort(data,temp,0,data.length-1); CKt~#$ I%
} h?tV>x/Fu
W" ,jZ"7
private void mergeSort(int[] data, int[] temp, int l, int r) { >Ez}r(QQ^
int i, j, k; ghQsS|)p.
int mid = (l + r) / 2; M 6Z`Pwv];
if (l == r) !3M!p&
return; 95&sFT
C
if ((mid - l) >= THRESHOLD) J
2~B<=V
mergeSort(data, temp, l, mid); 4i&!V9@:
else pR7G/]U$A
insertSort(data, l, mid - l + 1); ct/THq
if ((r - mid) > THRESHOLD) Z$K%@q,10+
mergeSort(data, temp, mid + 1, r); {cHTg04
else K{h]./%
insertSort(data, mid + 1, r - mid); Cu<ojN- $
.z7f_KX^
for (i = l; i <= mid; i++) { W]7?;#Hpk
temp = data; /!8:/7r+W
} F qyJ*W\1
for (j = 1; j <= r - mid; j++) { by ee-BU
temp[r - j + 1] = data[j + mid]; F+-MafN7Y
} 2p.+C35c=j
int a = temp[l]; 8>+eGz|
int b = temp[r]; [~JN n
for (i = l, j = r, k = l; k <= r; k++) { >Nqkz?67
if (a < b) { @,$HqJ
data[k] = temp[i++]; ky"7 ^
a = temp; fb=vO U
} else { l{{ #tW
data[k] = temp[j--]; X
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b = temp[j]; EqwA8?M
} r 24]2A
}
0d)n}fm
} UM^hF%
5S?Xl|8E
/** t?&ajh
* @param data *g.,[a0
* @param l CA~S$H\"
* @param i > _) a7%
*/ \05C'z3]
private void insertSort(int[] data, int start, int len) { uB! P>v6
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); O4 URr
} t)b>f~
} :P'5_YSi
} [qo*,CRz
} Qd=/e pkm
8[XNFFUZs
堆排序: .^W0;ISX
p{u}t!`!d
package org.rut.util.algorithm.support; E_*T0&P.P
aMD?^
import org.rut.util.algorithm.SortUtil;
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ld0WZj
/** }Q*ec/^{f
* @author treeroot sbb{VV`I
* @since 2006-2-2 FpYoCyD}
* @version 1.0 I!%@|[ Ow
*/ `Q[$R&\
public class HeapSort implements SortUtil.Sort{ e=C,`&sz
\Bf{/r5x
/* (non-Javadoc) ON^u|*kO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g:V6B/M&
*/ ;0WlvKF
public void sort(int[] data) { <CdO& xUY
MaxHeap h=new MaxHeap(); <7h'MNf&
h.init(data); }:Akpm
for(int i=0;i h.remove(); }?$Mh)
System.arraycopy(h.queue,1,data,0,data.length); A-5%_M3\G
} 3?<vnpN=5d
,s<d"]<
private static class MaxHeap{ Yi,um-%
X13bi}O6#
void init(int[] data){ ]z$<6+G
this.queue=new int[data.length+1]; +d.Bf
for(int i=0;i queue[++size]=data; r4'Pf|`u
fixUp(size); IrK )N
} ENr&k(>0HQ
} NIGFu{S
3x$ #L!VuU
private int size=0; dv:&N
jk?(W2c#{
private int[] queue; "^7Uk#!
7
qz):YHxT]n
public int get() { b ;b1V
return queue[1]; /_HL&|N_5
} pgarGaeq
LPClE5
public void remove() { ('Pd
GV4V
SortUtil.swap(queue,1,size--); epePx0N%x$
fixDown(1); 36z{TWF
} Sx7xb]3XI"
file://fixdown pQJZE7S
private void fixDown(int k) { W@LR!EW)
int j; \wP$"Z}j
while ((j = k << 1) <= size) { #=c%:{O{4R
if (j < size %26amp;%26amp; queue[j] j++; \qPrY.-
if (queue[k]>queue[j]) file://不用交换 \(s";@
break; 0Oq1ay^
SortUtil.swap(queue,j,k); mNzZ/*n:
k = j; e78}
} 6I<`N
} nfEk ,(:
private void fixUp(int k) { xae7#d0
while (k > 1) { T/nRc_I+^B
int j = k >> 1; 6{ Eh={:b
if (queue[j]>queue[k]) 1U!CD-%(
break; mD:!"h/
SortUtil.swap(queue,j,k); '>8N'*
k = j; D[_2:8
} mv_-|N~
} [Pl$=[+
Yp$lc^)c>
} S45jY=)z
]](hwj
} od>.5{o
XooAL0w
SortUtil: z'o+3zq^
L!RLw4
package org.rut.util.algorithm; r0,}f\
F$v
G=3
import org.rut.util.algorithm.support.BubbleSort; m"5gzH
import org.rut.util.algorithm.support.HeapSort; }0o0 "J-$
import org.rut.util.algorithm.support.ImprovedMergeSort; {[eY/)6H
import org.rut.util.algorithm.support.ImprovedQuickSort; 8^~]Ym:
import org.rut.util.algorithm.support.InsertSort; GbhaibkO
import org.rut.util.algorithm.support.MergeSort; ^[6AOz+L
import org.rut.util.algorithm.support.QuickSort; )Lq FZ~B
import org.rut.util.algorithm.support.SelectionSort; yWy9IWI["
import org.rut.util.algorithm.support.ShellSort; }_S]!AWz
wrWWXOZ4
/** : s35{K
* @author treeroot /T0|<r!c
* @since 2006-2-2 5 X rn]
* @version 1.0 DuaOi1Gw
*/ 4
0eNgm^
public class SortUtil { J5-^@JYK
public final static int INSERT = 1; Mh\c +1MFs
public final static int BUBBLE = 2; O-RiDYej
public final static int SELECTION = 3; lEJTd3dMi
public final static int SHELL = 4; 3UEh%Ho
public final static int QUICK = 5;
eL*Edl|#
public final static int IMPROVED_QUICK = 6; KR63W:Z\'
public final static int MERGE = 7; fjf\/%
public final static int IMPROVED_MERGE = 8; *e=e7KC6kI
public final static int HEAP = 9; 3i<*,@CY
*Zln\Sx
public static void sort(int[] data) { H"sey +-
sort(data, IMPROVED_QUICK); 6b0#z#E
} FD8Hx\oF
private static String[] name={ :7 maN^
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" U -(d~]$
}; =619+[fK
8V@3T/}
private static Sort[] impl=new Sort[]{ @YRBZ6FH
new InsertSort(), Xg"=,j2
new BubbleSort(), Gh.02
new SelectionSort(), LY7'wONx
new ShellSort(), (_D#gr{S=
new QuickSort(), rTcH~s
D`
new ImprovedQuickSort(), 4r %NtXAa
new MergeSort(), <D?`*#K
new ImprovedMergeSort(), uKplPze?
new HeapSort() u+N[Cgh
}; '<O&
:
Q[ IaA"
public static String toString(int algorithm){ *ZRQ4i[+
return name[algorithm-1]; ~*RNJ
} h
c"n?
+g*Ko@]m>
public static void sort(int[] data, int algorithm) { ey:3F%
impl[algorithm-1].sort(data); \;~>AL*
} -LF^u;s8&S
Q%6*S!~
public static interface Sort { 0YKG`W
public void sort(int[] data); Gg/K
} zKR_P{W>^
m]85F^R0
public static void swap(int[] data, int i, int j) { aX~7NslR
int temp = data; Vki3D'.7N
data = data[j]; UGIyNMY
data[j] = temp; oY &r76
} AV?*r-vWL.
} \JX8`]|&