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。 O+x!Bg7
插入排序: yyTnL 2Y9
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package org.rut.util.algorithm.support; h^P#{W!e\
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import org.rut.util.algorithm.SortUtil; `r 4fm`<
/** '[%j@PlCX
* @author treeroot ]\HvK CN}
* @since 2006-2-2 /&JT~M
* @version 1.0 s_p!43\J
*/
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public class InsertSort implements SortUtil.Sort{ [AJJSd/:
nQ3A~ ()
/* (non-Javadoc) :e+jU5;]3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <<O$ G7c
*/ .O<obq~;C
public void sort(int[] data) { 9_h[bBx-'Q
int temp; ZXPX,~ 5o
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); p!AAFmc
} !C.4<?*|
} sU^1wB
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} Pr
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a(ZcmYzXU
} {Qj~M<@3
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冒泡排序: 0#gK6o!
:7;@ZEe
package org.rut.util.algorithm.support; H3oFORh
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import org.rut.util.algorithm.SortUtil; VuZr:-K/
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/** Z0r'S]fe
* @author treeroot yEy6]f+>+
* @since 2006-2-2 \o3gKoL%
* @version 1.0 m+$VVn3Z}
*/ <9b&<K:
public class BubbleSort implements SortUtil.Sort{ XL/u#EA0<
V>3X\)qu
/* (non-Javadoc) XQw9~$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )0k53-h&
*/ }c:M^Ff
public void sort(int[] data) { G=bCNn<
int temp; [()koU#w.
for(int i=0;i for(int j=data.length-1;j>i;j--){ 5SQ8}Or3
if(data[j] SortUtil.swap(data,j,j-1); [mueZQyI?0
} 'dc#F3
} |;{6&S
} 7_[L o4_
} -$Ih@2"6
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} Yx`n:0
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选择排序: @>7%qS
WTiD[u
package org.rut.util.algorithm.support; llDkJ)\
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import org.rut.util.algorithm.SortUtil; iH'p>s5L
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i)
/** w&.aQGR#
* @author treeroot Gav$HLx
* @since 2006-2-2 h;'~,xA
* @version 1.0 0b 54fD=
*/ #T"4RrR
public class SelectionSort implements SortUtil.Sort { :Llb< MY2
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/* (**oRwr%
* (non-Javadoc) ]eV8b*d6
* K:WDl;8(d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'Z]w^<
*/ g0E'g
public void sort(int[] data) { I]_5}[I
int temp; :rP=t ,
for (int i = 0; i < data.length; i++) { Zj
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int lowIndex = i; iU:cW=W|M\
for (int j = data.length - 1; j > i; j--) { ?\n>
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if (data[j] < data[lowIndex]) { \
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lowIndex = j; V28M lP
} yIE!j%u
} z0Z%m@
SortUtil.swap(data,i,lowIndex); !dT4
} 5~S5F3
} lNv|M)I
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} Rk8P
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Shell排序: dQG=G%W
\
6MCxh6
package org.rut.util.algorithm.support; bhs
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import org.rut.util.algorithm.SortUtil; :Iz8aQ
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/** c1gQ cqF
* @author treeroot U%/+B]6jP
* @since 2006-2-2 '0,^6'VWOV
* @version 1.0 2+WaA,
*/ H6gSO(U
public class ShellSort implements SortUtil.Sort{ [PbOfxxgA
&6k3*dq
/* (non-Javadoc) 7PF%76TO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 51.%;aY~z
*/ fd9k?,zM
public void sort(int[] data) { $NO&YLS@
for(int i=data.length/2;i>2;i/=2){ [KQ6Ta.
for(int j=0;j insertSort(data,j,i); rW#T
vUn
} lr$zHI7_`
} N)Z?Z+}h
insertSort(data,0,1); EBmt9S
} nT)vNWT=
EEL,^3KR
/** 4`=mu}Y2
* @param data `qwBn=
* @param j +W+|%qM,\
* @param i {Hk}Kow
*/ <\S:'g"(
private void insertSort(int[] data, int start, int inc) {
W!(LF7_!
int temp; >KKMcTOYY
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); !1b;F*H
} )WFr</z5bA
} *gz{.)W
} BD7Ni^qI$
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l
} a-J.B.A$Z/
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快速排序: J|rq*XD}q
d<x7{?~.DK
package org.rut.util.algorithm.support; AT|3:]3E
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import org.rut.util.algorithm.SortUtil; -H-~;EzU
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/** rQ snhv
* @author treeroot '}#9)}x!
* @since 2006-2-2 Ef{Vp;]
* @version 1.0 UR5`ue ;
*/ ;xn0;V'=
public class QuickSort implements SortUtil.Sort{ J4U1t2@)9
[opGZ`>)j"
/* (non-Javadoc) ;]:@n;c\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) caX<
n>
*/ 1yY0dOoLG)
public void sort(int[] data) { S`Rs82>
quickSort(data,0,data.length-1); [=`q>|;pOv
} hK|Ul]qI
private void quickSort(int[] data,int i,int j){ 8Xs8A.
int pivotIndex=(i+j)/2; I1&aM}y{G
file://swap MnW+25=N
SortUtil.swap(data,pivotIndex,j); {BU;$
B#1;r-^P<
int k=partition(data,i-1,j,data[j]); IEvdV6{K
SortUtil.swap(data,k,j); Jj%K=sw
if((k-i)>1) quickSort(data,i,k-1); ""~ajy
if((j-k)>1) quickSort(data,k+1,j); Yu2Bkq+
Ny)X+2Ae
} C+&l<
fM&
/** DLNbo2C
* @param data jb!i$/%w
* @param i ZqO^f*F>h
* @param j 18:%~>.!
* @return 0+b1vhQ
*/ Yc*;/T}
private int partition(int[] data, int l, int r,int pivot) { K\c#ig
do{ BTrn0
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ;i+#fQO7Q
SortUtil.swap(data,l,r); 8DaL,bi*.
} ^sWT:BDh
while(l SortUtil.swap(data,l,r); o2\8OxcA
return l; R@rBEW&
} d m%8K6|
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} QkC(uS
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改进后的快速排序: ;gr9/Vl
IIx#2r
package org.rut.util.algorithm.support; uY'HT|@:{
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import org.rut.util.algorithm.SortUtil; y"wShAR
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/** @Do= k
* @author treeroot ;sFF+^~L
* @since 2006-2-2 S|+o-[e8O
* @version 1.0 4H]L~^CD
*/ |P}y,pNQ
public class ImprovedQuickSort implements SortUtil.Sort { u,4eCxYE$
nzeX[*
private static int MAX_STACK_SIZE=4096; $* Kvc$D
private static int THRESHOLD=10; wLr_-vJ
/* (non-Javadoc) R{T$[$6S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *CHX
*/ 45>?o
public void sort(int[] data) { {Y9q[D'g .
int[] stack=new int[MAX_STACK_SIZE]; 7D5]G-}x.
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int top=-1; i
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int pivot; Pgea NK5Y
int pivotIndex,l,r; cYt!n5w~W
6!FQzFCZq
stack[++top]=0; VP]% Hni]
stack[++top]=data.length-1; I~XSn>-H
S{m%H{A!
while(top>0){ A^<iL
int j=stack[top--]; PwLZkr@4^
int i=stack[top--]; -3Vx76Y
4{`{WI{
pivotIndex=(i+j)/2; ekCC5P!
pivot=data[pivotIndex]; J7p),[>I<
[cp+i^f
SortUtil.swap(data,pivotIndex,j); ')3
bl3:
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file://partition Q'0d~6n&{
l=i-1; G'A R`"F
r=j; 0"bcdG<}
do{ ea')$gR
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 'b{]:Y
SortUtil.swap(data,l,r); `W*U4?M
} _5N]B|cO
while(l SortUtil.swap(data,l,r); N?"]
SortUtil.swap(data,l,j); @sC`!Rmy'-
kPLxEwl
if((l-i)>THRESHOLD){ W6/yn
stack[++top]=i; :6\qpex
stack[++top]=l-1; ]?[fsdAQW
} p.?rey<%
if((j-l)>THRESHOLD){ LSr]S79N1
stack[++top]=l+1; ~R92cH>L
stack[++top]=j; 0:Ol7
} 3'u-'
[u*5z.^
} .0]<k,JZZ
file://new InsertSort().sort(data); "a U
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insertSort(data); Y/zj[>
} W:L
AP
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/** WI-1)1t
* @param data '1s0D]
*/ #4 pB@_
private void insertSort(int[] data) { SI-Ops~e
int temp; jtc]>]6i
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); NHZz _a=
} s,&Z=zt0R
} JnM["Q=`
} '(|ofJe!
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} WEi2=3dV
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归并排序: ~FG]wNgS
:X
(=z;B;N
package org.rut.util.algorithm.support; | h#u^v3
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import org.rut.util.algorithm.SortUtil;
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/** Z}Ft:7
* @author treeroot W v+?TEP
* @since 2006-2-2 A{D];pE`
* @version 1.0 Fy-t T]Q9
*/ HRfYl,S,
public class MergeSort implements SortUtil.Sort{ wEvVL
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/* (non-Javadoc) 'AS|ZRr/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xYpd: Sm
*/ k_nql8H
public void sort(int[] data) { RdRp.pb8
int[] temp=new int[data.length]; I(BQ34q
mergeSort(data,temp,0,data.length-1); YGCL2Y
} GDiBl* D
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private void mergeSort(int[] data,int[] temp,int l,int r){ n]o<S+z
int mid=(l+r)/2; %aVq+kC h
if(l==r) return ; x-&@wMqkc
mergeSort(data,temp,l,mid); |H+UOEiv,p
mergeSort(data,temp,mid+1,r); 8NAON5.!
for(int i=l;i<=r;i++){ PBTnIU
temp=data; CN8Y\<Ar
} *mvlb
(' &
int i1=l; t=W}SH
int i2=mid+1; E92KP?i
for(int cur=l;cur<=r;cur++){ |imM#wF
if(i1==mid+1) Q:d]imw!O
data[cur]=temp[i2++]; 0[?Xxk}s0
else if(i2>r) ?QdWrE_
data[cur]=temp[i1++]; PP33i@G
else if(temp[i1] data[cur]=temp[i1++]; @YTaSz$L
else 9 X`Sm}i
data[cur]=temp[i2++]; fN1-d&T
} LIF7/$,0
} )W
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Iom'Y@x
} 30T)!y
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改进后的归并排序: ,uhb~N<
EaY?aAuS:
package org.rut.util.algorithm.support; ra
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import org.rut.util.algorithm.SortUtil; fdi\hg^x
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/** sLT3Y}IO
* @author treeroot !9VY|&fHe
* @since 2006-2-2 -3Z,EaG^
* @version 1.0 1JG'%8}#8
*/ L2i_X@/
public class ImprovedMergeSort implements SortUtil.Sort { ~YWQ2]
wIaony
private static final int THRESHOLD = 10; ?Z[[2\DR
j[J-f@F \Y
/* E,x+JeKV
* (non-Javadoc) 0gP}zM73
* h( u8&MHx
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ ag;pN*z
public void sort(int[] data) { jZkcBIK2
int[] temp=new int[data.length]; aP@N)"
mergeSort(data,temp,0,data.length-1); #rQ2gx4
} =ToyZm\
fW1CFRHH
private void mergeSort(int[] data, int[] temp, int l, int r) { :vQrOn18p
int i, j, k; :zke %Yx
int mid = (l + r) / 2; 5 ,B_u%bb
if (l == r) 0{p#j~ZhC
return; `*N[jm"
if ((mid - l) >= THRESHOLD) A>;bHf@
mergeSort(data, temp, l, mid); (Y? gn)*t
else .|>3k'<l
insertSort(data, l, mid - l + 1); sW'AjI
if ((r - mid) > THRESHOLD) 17"uf.G
mergeSort(data, temp, mid + 1, r); N gGp
else Y>dzR)~3[
insertSort(data, mid + 1, r - mid); W ]?G}Q;
X Dm[Gc>(~
for (i = l; i <= mid; i++) { tOd&!HYL
temp = data; -4IE]'##
} +RM SA^
for (j = 1; j <= r - mid; j++) { i0kak`x0
temp[r - j + 1] = data[j + mid]; }t=!(GOb}
} }"P|`"WW
int a = temp[l]; b)5uf'?-
int b = temp[r]; Ru!iR#s)!
for (i = l, j = r, k = l; k <= r; k++) { H0gbSd+
if (a < b) { eFTpnG
data[k] = temp[i++]; g<;q.ZylT
a = temp; yT"Eq"7/Y#
} else { '/n1IM$7
data[k] = temp[j--]; ;yLu R
b = temp[j]; l<LP&
} {
Vf XsI
} r|fL&dtr
} Ls$D$/:q?
_~J
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/** %G/hD
* @param data ^?7-r6
* @param l +-U- D?-
* @param i
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*/ s_OF( o
private void insertSort(int[] data, int start, int len) { rv^@, 8vq
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); n&;85IF1
} TA`1U;c{n
} ~"&|W'he[
} vkx7paY_
} JHM9
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堆排序: M4oy
r?lf($D*
package org.rut.util.algorithm.support; "fCu=@i
y^,1a[U.
import org.rut.util.algorithm.SortUtil; t?x<g <PJ4
rq/yD,I,
/** r6MMCJ|G
* @author treeroot 3G)#5Lf<
* @since 2006-2-2 7uS~MW
* @version 1.0 0w\zLU
*/ %S@ZXf~:
public class HeapSort implements SortUtil.Sort{ \K{0L
QQ*hCyw!
/* (non-Javadoc) XSe=sHEI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6xe*E[#k\
*/ p$NQyS5C"S
public void sort(int[] data) { hOu3 bA
MaxHeap h=new MaxHeap(); .9 on@S
h.init(data); z0p*Z&
for(int i=0;i h.remove(); hk(ZM#Bh
System.arraycopy(h.queue,1,data,0,data.length); <EB+1GFuI
} B:;pvW]
i&Tbz!
private static class MaxHeap{ uGf@
nzuX&bSw
void init(int[] data){ _"Dv
uR
this.queue=new int[data.length+1]; 7a=gH2]&
for(int i=0;i queue[++size]=data; L%*!`TN
fixUp(size); hYT0l$Ng
} W#4 7h7M
} @; zl
w;[NH/A^a
private int size=0; _(W+S`7Z
\}u
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private int[] queue; l6T-}h:=
pXT4)JDpc
public int get() { ^pAAzr"hv
return queue[1]; N
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} B4c]}r+
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ru
public void remove() { 8`q:Gz=M\
SortUtil.swap(queue,1,size--); 8rnwXPBN
fixDown(1); N_kMK
} 7u -p%eq2
file://fixdown Z58X5"
private void fixDown(int k) { (Ft+uuG
int j; (^8Y|:Tz
while ((j = k << 1) <= size) { ~ drS} V
if (j < size %26amp;%26amp; queue[j] j++; zH?!
if (queue[k]>queue[j]) file://不用交换 jH5
k
break; l[mWf
SortUtil.swap(queue,j,k); 4C6YO
k = j; 6"LcJ%o
} U2tV4_ e
} iW]j9} t
private void fixUp(int k) { v}}F,c(f
while (k > 1) { :}L[sl\R
int j = k >> 1; ajbA\/\G;
if (queue[j]>queue[k]) 3Gp$a;g
break; '1P2$#
SortUtil.swap(queue,j,k); ?Ny9'g>?
k = j; MnsJEvn/
} 0rQMLx
} E<{R.r
.;y.]Z/;
} Z,
zWuE3
#vz7y(v
} QUwd [
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SortUtil: %~O,zs.2p
er("wtM
package org.rut.util.algorithm; .KB^3pOpx
2@n{yYwy
import org.rut.util.algorithm.support.BubbleSort; [`#CXq'
import org.rut.util.algorithm.support.HeapSort; KB3Htw%W[+
import org.rut.util.algorithm.support.ImprovedMergeSort; ?hZAxR\
import org.rut.util.algorithm.support.ImprovedQuickSort; pz!Zs."f)
import org.rut.util.algorithm.support.InsertSort; ^]>O;iB?
import org.rut.util.algorithm.support.MergeSort; (R[[Z,>w.
import org.rut.util.algorithm.support.QuickSort; m4[ ;(1
import org.rut.util.algorithm.support.SelectionSort; BA @lk+aW
import org.rut.util.algorithm.support.ShellSort; FZ{h?#2?
[SjqOTon{
/** jnkR}wAA
* @author treeroot !hA-_
* @since 2006-2-2 6+#Ydii9E
* @version 1.0 =m]v8`g
*/ 2prU
public class SortUtil { wjU9ZGM
public final static int INSERT = 1; GL>O4S<`
public final static int BUBBLE = 2; afCW(zHp
public final static int SELECTION = 3; Hck]aKI+
public final static int SHELL = 4; <O(4TO
public final static int QUICK = 5; \0^Kram>
public final static int IMPROVED_QUICK = 6; $P >
public final static int MERGE = 7; A6
public final static int IMPROVED_MERGE = 8; E+j/Cu
public final static int HEAP = 9; 3H'sHuK"X
KaLzg5is
public static void sort(int[] data) { Z\(q@3 C
sort(data, IMPROVED_QUICK); z 4e7PW|
} =Pyj%4Rs
private static String[] name={ $f$SNx)),
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" |QF7
uV
}; n QF(vTDN
%e8@*~h@
private static Sort[] impl=new Sort[]{ ]vB$~3||
new InsertSort(), <.%4 !
}f8
new BubbleSort(), Ij7p'a
new SelectionSort(), rP'me2
B
new ShellSort(), 0.Q
Ujw
new QuickSort(), %HhBt5w
new ImprovedQuickSort(), ,5P0S0*{
new MergeSort(), [CTnXb
new ImprovedMergeSort(), '9%\;
new HeapSort() #JqB ;'\
}; xS5vbJ
K6)Gc%:`
public static String toString(int algorithm){ 6lZ3tdyNo
return name[algorithm-1]; &Gc9VF]o
} \:P>le'1
DcS+_>a\{l
public static void sort(int[] data, int algorithm) { {Ea
b
j
impl[algorithm-1].sort(data); xf'V{9*
} bS{bkE>
&.F4b~A7
public static interface Sort { `{8K.(])s!
public void sort(int[] data); 1;* cq
} 4XL^D~V
oe ~'o'
public static void swap(int[] data, int i, int j) { :ffY6L+
int temp = data; HRpte=`q
data = data[j]; f'F?MINJP
data[j] = temp; Q*GN`07@?d
} mwO6g~@`
} ^23~ZHu