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。 Ee097A?1vj
插入排序: |?<^4U8
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package org.rut.util.algorithm.support; :7[4wQDt4
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import org.rut.util.algorithm.SortUtil; u}eLf'^ZCe
/** #j4jZBOTM
* @author treeroot G^2%F5@
* @since 2006-2-2 ^
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* @version 1.0 h)pYV>!d
*/ qt`HP3J&
public class InsertSort implements SortUtil.Sort{ |<!xD
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/* (non-Javadoc) 6YF<GF{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nl+8C}=u
*/ ,KFF[z
public void sort(int[] data) { fX{Xw0
int temp; f?W" ^6Df
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5KC
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} l
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} aK?PK }@
} $*c!9Etl4
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} ?F/)<r
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冒泡排序: Kdr}7#c
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package org.rut.util.algorithm.support; dLtmG:II
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import org.rut.util.algorithm.SortUtil; %6cbHH
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/** {4YD_$4W
* @author treeroot e {805^X}
* @since 2006-2-2 "9O8#i<Nr
* @version 1.0 >gf,8flgj
*/ P0ZY;/e5h
public class BubbleSort implements SortUtil.Sort{ Z7J4rTA
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/* (non-Javadoc) N?><%fra
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~'VVCtA
*/ KSQ*HO)5
public void sort(int[] data) { 7Y6b<:4j
int temp; 8 c5=Px2\
for(int i=0;i for(int j=data.length-1;j>i;j--){ "w{$d&+?ag
if(data[j] SortUtil.swap(data,j,j-1); _WN\9<
} 0;tu}]jnN
} U$Od)
} o(eh.
} NuR3]Ja\0
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} XVzsqi*Z
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选择排序: 7=a=@D[
ui<Mnm_T;d
package org.rut.util.algorithm.support; y1#*c$ O
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import org.rut.util.algorithm.SortUtil; Rh%C$d(
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/** Z. ,pcnaQb
* @author treeroot !dOpLUh l
* @since 2006-2-2 x{9$4d
* @version 1.0 ,jdTe?[*^
*/ 52.%f+Oa
public class SelectionSort implements SortUtil.Sort { 349BQ5ND
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/* C@!bd+'
* (non-Javadoc) m*vz
* V<Co!2S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hQwUwfoe@
*/ 21z@-&Oq
public void sort(int[] data) { (je`sV
int temp; j9f[){m`
for (int i = 0; i < data.length; i++) { "GX k;Y
int lowIndex = i; N14Q4v-*x
for (int j = data.length - 1; j > i; j--) { FB2{qG3
if (data[j] < data[lowIndex]) { Wn&9R
j
lowIndex = j; =}'7}0M_=
} K&BaGrR
} R{UZCFZ
SortUtil.swap(data,i,lowIndex); Zx^R -9
} cp2a @
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} e,
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Shell排序: G6p R?K+
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package org.rut.util.algorithm.support; CPcB17!
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import org.rut.util.algorithm.SortUtil; J~)JsAXAI
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/** {m/KD 'b_
* @author treeroot "rHPcp"m
* @since 2006-2-2 x\ 8gb#8
* @version 1.0 zQoJ8i>
*/ R~BFZF>:
public class ShellSort implements SortUtil.Sort{ \ESNfL5
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/* (non-Javadoc) )}@Z*.HZL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .t.4y.
97
*/ ='6@^6y
public void sort(int[] data) { p~OX1RBI
for(int i=data.length/2;i>2;i/=2){ ?dmwz4k0
for(int j=0;j insertSort(data,j,i); R'qBG(?i
} Y8for'
} ,qj M1xkL$
insertSort(data,0,1); )kIjZ
} nPhREn!
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/** c=aVYQ"2
* @param data DTl&V|h$
* @param j BirnCfj/2
* @param i .&.L@CRH
*/ ]CX^!n
private void insertSort(int[] data, int start, int inc) { -qG7, t
int temp; 1;HL=F
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); irMBd8WG
} Ct]? /
} /w2NO9Q
} F41g Mg
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} 8#IEE|1
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快速排序: o(D6
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package org.rut.util.algorithm.support; rB_ESNx
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import org.rut.util.algorithm.SortUtil; aT8A+=K6
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/** S*%:ID|/C2
* @author treeroot T#a6X;9P
* @since 2006-2-2 +1Pu29B0
* @version 1.0 zLg_0r*h1
*/ g_?bWm4br
public class QuickSort implements SortUtil.Sort{ ,irc=0M(
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/* (non-Javadoc) EGjzjuJu{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $YK~7!!
*/ ~>$z1o&}.
public void sort(int[] data) { ' wKTWmf?\
quickSort(data,0,data.length-1); Pt7C/
qM/
} 1~vv<`-
private void quickSort(int[] data,int i,int j){ ZVz*1]}
int pivotIndex=(i+j)/2; /Q'O]h0a
file://swap le2 v"Y
SortUtil.swap(data,pivotIndex,j); Ox6^=D"
TSj)XU {W
int k=partition(data,i-1,j,data[j]); \b?O+;5Cj
SortUtil.swap(data,k,j); D!D}mPi[
if((k-i)>1) quickSort(data,i,k-1); 1~[GGl
if((j-k)>1) quickSort(data,k+1,j); ~e=KBYDBu
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} gXB&Sgjo
/** Y{L|ja%9?
* @param data jR{t=da
* @param i iBCIJ!;
* @param j C3b<Wa])
* @return sNJ?Z"5k1h
*/ PcvA/W
private int partition(int[] data, int l, int r,int pivot) { u43-\=1$T
do{ ihIRB9
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); .&/A!3pW
SortUtil.swap(data,l,r); xt8@l
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} \8`^QgV`@
while(l SortUtil.swap(data,l,r); kp*BAQ
return l; H}lbF0`
} +'UxO'v3]
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} \p\rPfY{>
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改进后的快速排序: aWb5w
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package org.rut.util.algorithm.support; >k(AQW5?
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import org.rut.util.algorithm.SortUtil; 3Ael
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/** ,J'@e+jV
* @author treeroot qb5IpI{U
* @since 2006-2-2 #e6x_o|
* @version 1.0 nG"Ae8r
*/ #DcK{|ty
public class ImprovedQuickSort implements SortUtil.Sort { cQh=Mri]
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private static int MAX_STACK_SIZE=4096; /(bn+l}W
private static int THRESHOLD=10; qGie~S ##
/* (non-Javadoc) e3kdIOu5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IE&G7\>(yO
*/ [q!)Y:|u_>
public void sort(int[] data) { < !]7Gt
int[] stack=new int[MAX_STACK_SIZE]; AI2 >{V
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int top=-1; UFUm-~x`
int pivot; rE\.[mFI
int pivotIndex,l,r; 'deqF|Iox
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stack[++top]=0; PSa"u5 O
stack[++top]=data.length-1; n/IDq$/P
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while(top>0){ !Ly1!;<
int j=stack[top--]; j,#R?Ig
int i=stack[top--]; LU@+ O12
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pivotIndex=(i+j)/2; DJHE6XJ
pivot=data[pivotIndex]; znd fIt^
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SortUtil.swap(data,pivotIndex,j); D]d2opBLj
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file://partition mOx>p"n
l=i-1; 9_pOV%Qs
r=j; ~ph>?xuw
do{ ^os|yRzV*M
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ow,=M%x"0
SortUtil.swap(data,l,r); +#ANc;2g
} ~kPZh1n`
while(l SortUtil.swap(data,l,r); $-f(.S
SortUtil.swap(data,l,j); j~Ubpf
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if((l-i)>THRESHOLD){ r$-]NYPi
stack[++top]=i; _1P8rc"Dx
stack[++top]=l-1; *5;#+%A
} 1FmVx
if((j-l)>THRESHOLD){ z=VL|Du1OT
stack[++top]=l+1; JU0|pstf
stack[++top]=j; )L:p.E
} `Yc>I!iN
X !l#1
} 4gK_'b6"
file://new InsertSort().sort(data); 5}2XnM2
insertSort(data); aD8r:S\
} x)o`w"]al
/** =%oKYQ
* @param data j0[9Cj^%c
*/ MM4Eq>F/
private void insertSort(int[] data) { CEp @-R
int temp; > v ]-B"Y
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); JZB@K6 ~dO
} XRR`GBI
} X7&
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} Y/<
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} Fs)m;C
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归并排序: BA|*V[HBE
`1"Xj ^
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package org.rut.util.algorithm.support; w
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import org.rut.util.algorithm.SortUtil; [\e2 ID;
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/** B":u5_B
* @author treeroot W02swhS
* @since 2006-2-2 4PAuEM/z
* @version 1.0 <',bqsg[
*/ Lj03Mx.2S
public class MergeSort implements SortUtil.Sort{ tXnD>H YV
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/* (non-Javadoc) Fr ryZe=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h ?%]uFJC
*/ xiG_l-2l
public void sort(int[] data) { S?Z"){
int[] temp=new int[data.length]; vS'5Lm
mergeSort(data,temp,0,data.length-1); p-o!K\o-1
} L5yv}:.U
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private void mergeSort(int[] data,int[] temp,int l,int r){ |VD}:
int mid=(l+r)/2; )$e_CJ}9e
if(l==r) return ; DQOEntw
mergeSort(data,temp,l,mid); ON<X1eU
mergeSort(data,temp,mid+1,r); OAXF=V F#
for(int i=l;i<=r;i++){ s0x;<si_
temp=data; #y&O5
} L@HWm;aN
int i1=l; CERT`W%o
int i2=mid+1; ;v^1V+1:z
for(int cur=l;cur<=r;cur++){ J 4OgV?
if(i1==mid+1) ,a/<t"
data[cur]=temp[i2++]; h\i>4^]X.
else if(i2>r) ^w|apI~HSE
data[cur]=temp[i1++]; 4w5mn6 MxR
else if(temp[i1] data[cur]=temp[i1++]; u$?t |Ll
else R3=]Av46
data[cur]=temp[i2++]; 9n#Em
} ![*7HE>},
} Pe_FW8e#J
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} V,CVMbn/%N
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改进后的归并排序: 0QxE6>xL=
<^(g<B`>
package org.rut.util.algorithm.support; &.}Zj*BD
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import org.rut.util.algorithm.SortUtil; Tp?l;DU
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/** c={bunnz#
* @author treeroot x:O;Z~ |.
* @since 2006-2-2 7xmif YC
* @version 1.0 #c:b8rw
*/ uY6|LTK&x
public class ImprovedMergeSort implements SortUtil.Sort { APA:K9jD
;<=B I!
private static final int THRESHOLD = 10; ~'9>jpnw
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/* \.%GgTF
* (non-Javadoc) p/k6}Wl
* CgO&z<A!&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M'4$z^@Z
*/ qJZ5w}
public void sort(int[] data) { 9cm9;
int[] temp=new int[data.length]; D8''q%
mergeSort(data,temp,0,data.length-1); C`0;
} M@/Hd0$
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private void mergeSort(int[] data, int[] temp, int l, int r) { E{Ux|r~
int i, j, k; JBKCa 3
int mid = (l + r) / 2; pjP
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r
if (l == r) XeT{y]lkd
return; &m>sGCZ
if ((mid - l) >= THRESHOLD) ?$#,h30
mergeSort(data, temp, l, mid); (7qdrAeP
else #K3`$^0 s
insertSort(data, l, mid - l + 1); >$yqx1=jW
if ((r - mid) > THRESHOLD) DVWqrK}q
mergeSort(data, temp, mid + 1, r); CI )89`
else k7gm)}RKcu
insertSort(data, mid + 1, r - mid); DJmT]Q]o)
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for (i = l; i <= mid; i++) { e5 ?;{H
temp = data; TEK]$%2
} eaxp(VX?oy
for (j = 1; j <= r - mid; j++) { [*k25N
temp[r - j + 1] = data[j + mid]; Iw<:
k
} dk^Uf84.Gr
int a = temp[l]; 7O,y%NWaK
int b = temp[r]; }RvP*i
for (i = l, j = r, k = l; k <= r; k++) { @l:o0(!W
if (a < b) { JPt=~e(
data[k] = temp[i++]; 18AKM
a = temp; dSkW[r9Z%l
} else { E?z~)0z2`
data[k] = temp[j--]; ^atX/
b = temp[j]; cN5,\I.
} 9y~5@/32R
} \MA4>
} $bd&$@sA
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/** #Wz7ju;
* @param data w)hH8jx{
* @param l &ZRriqsQg
* @param i EC4RA'Bg1k
*/ .qcIl)3
private void insertSort(int[] data, int start, int len) { !4(X9}a
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); xSQ:#o=8G
} <=D\Ckmb
} 5)rMoYn25
} s5DEuu>g
} V4PV@{G
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堆排序: )\bA'LuFy
9"=1 O
package org.rut.util.algorithm.support; a&Stdh
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import org.rut.util.algorithm.SortUtil; 2k}" 52
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/** )e$}sw{t
* @author treeroot |(Bc0sgw}
* @since 2006-2-2 3Vu_-.ID
* @version 1.0 $fhb-c3
*/ r{V=)h
public class HeapSort implements SortUtil.Sort{ %V +hm5Q
R<J1bH1n3
/* (non-Javadoc) _7h:NLd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g8JO/s5xV
*/ <@DF0x!
public void sort(int[] data) { O]>FNsh !
MaxHeap h=new MaxHeap(); LovVJ^TD0i
h.init(data); vnNX)$f
for(int i=0;i h.remove(); P9Yw\
System.arraycopy(h.queue,1,data,0,data.length); 0~(K@U>#
} YTc
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private static class MaxHeap{ zT\nj&7
[p+]H?(A
void init(int[] data){ (V:z7
this.queue=new int[data.length+1]; =V- ^
for(int i=0;i queue[++size]=data; V!Px975P
fixUp(size); ScgaWJ
} g H+s)6
} |4J ;s7us
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private int size=0; +:a#+]g
=i4%KF9x
private int[] queue; ig Q,ZY1
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public int get() { A)2eo<ij4
return queue[1]; V__|NVoOm
} C#^V<:9
B1x# 7>K
public void remove() { N-0kB vo
SortUtil.swap(queue,1,size--); (;9-8Y&_