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。 DpS6>$v8t
插入排序: l.)N
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package org.rut.util.algorithm.support; >A,WXzAK}S
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import org.rut.util.algorithm.SortUtil; $GO'L2oLwn
/** I(<G;ft<}
* @author treeroot 8&UuwZ6i-
* @since 2006-2-2 b<( W}$x
* @version 1.0 yX~[yH+Pn
*/ H0(zE*c~
public class InsertSort implements SortUtil.Sort{ ;Z`)*TRp4
3QHZC0AY
/* (non-Javadoc) 1I+5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?0(B;[xEJ
*/ !>:tF,fcB
public void sort(int[] data) { }1W$9\%
int temp; Q]7Q
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); aBI]' D;
} ZkIQ-;wx
} ;Pa(nUE@
} Ii,:+o%
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} O+8`.
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冒泡排序: P8VU&b\
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package org.rut.util.algorithm.support; g7P1]CZ}
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import org.rut.util.algorithm.SortUtil; 9>#|~P&FE
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/** 0hkuBQb\
* @author treeroot =R'v]SXj
* @since 2006-2-2 B~NC
* @version 1.0 0c5_L6_z
*/ itF+6wv~
public class BubbleSort implements SortUtil.Sort{ LbR-uc?x
f$>orVm%.
/* (non-Javadoc) EDo@J2A
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ x]ti3?w
public void sort(int[] data) { 5G<CDgl^!
int temp; F&*M$@u5
for(int i=0;i for(int j=data.length-1;j>i;j--){ I5L7BTe
if(data[j] SortUtil.swap(data,j,j-1); * jK))|%
} YP<]f>SBt
} %)9]dOdOk
} %-l:_A
} +*J4q5;E[?
xiF%\#N
} X6.O;
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选择排序: 'D&G~$
5G!U'.gr
package org.rut.util.algorithm.support; 42CMRGv
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import org.rut.util.algorithm.SortUtil; *$(CiyF!
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/** `5-#M/J
* @author treeroot #0u69
* @since 2006-2-2 JJ?ri,
* @version 1.0 a{*'pY(R0$
*/ 0lCd,a2:
public class SelectionSort implements SortUtil.Sort { vB5iG|b}
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/* 0NtsFPO
* (non-Javadoc) f#kevf9zc
* 2w|u)ow)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KN:dm!A
*/ )m8>w6"
public void sort(int[] data) { /JeqoM"x
int temp; 3c ^=<i
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for (int i = 0; i < data.length; i++) { H}V*<mgw
int lowIndex = i; `U_>{p&x
for (int j = data.length - 1; j > i; j--) { 6Y)^)dOi
if (data[j] < data[lowIndex]) { sK-|xU.
lowIndex = j; 0t/y~TrBY
} 1IQOl
} ~_db<!a
SortUtil.swap(data,i,lowIndex); !VX_'GyK
} oHXW])[
} ,DuZMGg
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} Cn;H@!8<s
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Shell排序: B"8JFf}"q
8N*
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package org.rut.util.algorithm.support; #D/ }u./
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import org.rut.util.algorithm.SortUtil; b/,!J]W
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/** y8*@dRrq
* @author treeroot 5'c+313 lm
* @since 2006-2-2 ^$+f3Z'
* @version 1.0 [{p?BTs
*/ 7R<u=U
public class ShellSort implements SortUtil.Sort{ O<Sc.@~
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/* (non-Javadoc) Y0X94k.u
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ";?C4%L
*/ _l!U[{l*d
public void sort(int[] data) { b|ksMB>)
for(int i=data.length/2;i>2;i/=2){ &PBWJ?@O)r
for(int j=0;j insertSort(data,j,i); :KV,:13`D
} m wEVEx24
} W3{<e"
insertSort(data,0,1); qe6C|W~n
} 3@TG.)N4
_/%]:
/** *fvI.cKiGP
* @param data ;TV'PJ
* @param j W`/jz/
* @param i \B>[je-d
*/ llaZP(pJ
private void insertSort(int[] data, int start, int inc) { \|pK Z6*s
int temp; MY?O/,6
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); RZ)vU'@kx
} |+;K hC
} uU[[[LQq
} mWN1Q<vn,l
34m' ]n
} cfC; eRgq~
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快速排序: Xs%R]KOwt
cEdz;kbUM
package org.rut.util.algorithm.support; Yn$>QS 4
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import org.rut.util.algorithm.SortUtil; m.HX2(&\3
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/** K.#,O+-Kg`
* @author treeroot x<{;1F,k3
* @since 2006-2-2 liCCc;&B;
* @version 1.0 @ yg|OA}
*/ #.MIW*==
public class QuickSort implements SortUtil.Sort{ 7>t$<J
J:~[j
/* (non-Javadoc) vh. Wm?qQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3lLW'g&=
*/ oA!5dpNhU
public void sort(int[] data) { w8ZHk?:
quickSort(data,0,data.length-1); C>JekPeM
} *3.yumcv{L
private void quickSort(int[] data,int i,int j){ #!8^!}nFO
int pivotIndex=(i+j)/2; A"\P&kqMV
file://swap \N`fWh8&
SortUtil.swap(data,pivotIndex,j); qL%.5OCn(
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int k=partition(data,i-1,j,data[j]); X ]pR,\B
SortUtil.swap(data,k,j); Wk\mgGn+
if((k-i)>1) quickSort(data,i,k-1); M9(ez7Z
if((j-k)>1) quickSort(data,k+1,j); [Hv*\rb
up+.@h{
} WIEx
'{
/** t`<}UWAH+
* @param data ]HJ{dcF
* @param i cotxo?)Zv
* @param j TdNuD V
* @return `x%U
*/ q9>Ls-k
private int partition(int[] data, int l, int r,int pivot) { Qm35{^p+
do{ 9:9N)cNvfX
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); JAGi""3HG
SortUtil.swap(data,l,r); 54ak<&?
} :"OZc7
~
while(l SortUtil.swap(data,l,r); *}
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return l; Aj8l%'h[
} iXUWIgr
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} pY{; Yn&t
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改进后的快速排序: +Fc ET
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package org.rut.util.algorithm.support; HZQDe&
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import org.rut.util.algorithm.SortUtil; IZ4W_NN
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/** ]Y_{P~ZX
* @author treeroot S+.21,
* @since 2006-2-2 8Zcol$XS'
* @version 1.0 #d}0}7ue
*/ nwa\Lrh
public class ImprovedQuickSort implements SortUtil.Sort { Nd]0ta
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private static int MAX_STACK_SIZE=4096; jGO9n
private static int THRESHOLD=10; dIoF ~8V
/* (non-Javadoc) ~/^y.SsWM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 33=Mm/<m$P
*/ VKq0<+M
public void sort(int[] data) { ^-gfib|VGe
int[] stack=new int[MAX_STACK_SIZE]; r5f^WZ$-
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int top=-1; e%PCe9
int pivot; AkxH
int pivotIndex,l,r; =}~NRmmF
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1
stack[++top]=0; 6?53q e
stack[++top]=data.length-1; +:Lk^Ny
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while(top>0){ ,]0S4h67
int j=stack[top--]; IkSX\*
int i=stack[top--]; >nc4v6s
gb.f%rlZ`
pivotIndex=(i+j)/2; Bj;\mUsk
pivot=data[pivotIndex]; J9g|#1G
@)9REA(U
SortUtil.swap(data,pivotIndex,j); +n@f'a">
6{5q@9F
file://partition " <<A
l=i-1; gsnP!2cR
r=j;
[<_"`$sm=
do{ x$~3$E
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); *y)4D[
z-
SortUtil.swap(data,l,r); $8jaapNm@
} 6a7vlo
while(l SortUtil.swap(data,l,r); ?lF mXZy`
SortUtil.swap(data,l,j); EC<5M5Lc
MK omq
if((l-i)>THRESHOLD){ 7rH'1U
stack[++top]=i; /rqqC(1
stack[++top]=l-1; U$A/bEhw
} [ }{w
if((j-l)>THRESHOLD){ tJff+n>
stack[++top]=l+1; 1Wv{xML"
stack[++top]=j; `tX@8|
} JRD8Lz]Q3
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} xM%
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file://new InsertSort().sort(data); >H$;Z$o*(
insertSort(data); &j3`
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} a|U}Ammr
/** M|ms$1x
* @param data 3QIdN
*/ YbzM6u2
private void insertSort(int[] data) { 7LG+$LEz
int temp; tL1P<1j_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); itw{;j
} p7s@%scp
} %?Rs*-F.~1
} Hc M~
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} JfbKf~g
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归并排序: mqdOu{kQ
AfN&n= d K
package org.rut.util.algorithm.support; 21ViHV
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import org.rut.util.algorithm.SortUtil;
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/** s1{[{L3
* @author treeroot -]/7hN*v
* @since 2006-2-2 8-ZUS|7B
* @version 1.0 7RD$=?o O'
*/ wrabyRjK
public class MergeSort implements SortUtil.Sort{ `os8;`G
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/* (non-Javadoc) j AQU~Ol_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "?P[9x}
*/ qJ
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public void sort(int[] data) { ^Z#@3=
int[] temp=new int[data.length]; |:N>8%@6c
mergeSort(data,temp,0,data.length-1); @ ICbKg:
} Z^*NnL.'
c yP,[?N
private void mergeSort(int[] data,int[] temp,int l,int r){ Ssf+b!e]
int mid=(l+r)/2; b~*i91)\
if(l==r) return ; v77fQ0w3
mergeSort(data,temp,l,mid); VRF6g|0;
mergeSort(data,temp,mid+1,r); FN!1|'VK
for(int i=l;i<=r;i++){ ~p\n&{P0
temp=data; r1;e 0\?`
} LQqfi
~
int i1=l; (UGol[f<
int i2=mid+1; 1[s0Lz
for(int cur=l;cur<=r;cur++){ 84^[/d;!
if(i1==mid+1) p,;mYm s
data[cur]=temp[i2++]; /&(1JqzlB
else if(i2>r) f`?0WJ(M
data[cur]=temp[i1++]; hg8Be6G<
else if(temp[i1] data[cur]=temp[i1++]; csDQva\
else 4-V)_U#8
data[cur]=temp[i2++]; UOt8Q0)}
} ?mU\
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} @1g&Z}L
o
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gG
} @1bH}QS
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改进后的归并排序: ^C7C$TZS
J{tVa(.
package org.rut.util.algorithm.support; +/y]h0aa
.$0Pr%0pWI
import org.rut.util.algorithm.SortUtil; $;`I,k$0>~
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/** :u/mTZDi
* @author treeroot +s~.A_7)
* @since 2006-2-2 ^A!$i$NON
* @version 1.0 pj;
I)-d/
*/ NXI[q'y
public class ImprovedMergeSort implements SortUtil.Sort { k>5 O`Y:
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private static final int THRESHOLD = 10; YeyGN
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/* ]?&FOzN5$P
* (non-Javadoc) 6Dst;:
*
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h1f8ktF
*/ Qn|+eLY
public void sort(int[] data) { 5I' d PNf
int[] temp=new int[data.length]; ,@.EpbB
mergeSort(data,temp,0,data.length-1); EB,4PEe:
} af'@h:
l r~gG3
private void mergeSort(int[] data, int[] temp, int l, int r) { <kbyZXV@K
int i, j, k; :E'P7A
int mid = (l + r) / 2; Yb:pAzw6
if (l == r) K)N 0,Qwu
return; _~M^ uW^l
if ((mid - l) >= THRESHOLD) T)SbHp Y
mergeSort(data, temp, l, mid); A5nO=
else > 0.W`j(s
insertSort(data, l, mid - l + 1); WG5W0T_
if ((r - mid) > THRESHOLD) v}[dnG
mergeSort(data, temp, mid + 1, r); W^3;F1
else 98=la,^$
insertSort(data, mid + 1, r - mid); v(O=IUa
>EP(~G3u
for (i = l; i <= mid; i++) { GwLFL.Ke
temp = data; p]ivf
} 4c159wsnQ
for (j = 1; j <= r - mid; j++) { Xy7Z38G
temp[r - j + 1] = data[j + mid]; C@gXT]Q
0}
} ,t,wy37*D
int a = temp[l]; 2UadV_s+s
int b = temp[r]; Zyye%Ly
for (i = l, j = r, k = l; k <= r; k++) { e@n!x}t8
if (a < b) { MGt]' }
data[k] = temp[i++]; Vrp[r *V@E
a = temp; CxF-Z7 '
} else { xf,5R9g/
data[k] = temp[j--]; g/Wh,f3
b = temp[j]; R_kQPP
} thW<
} :&w{\-0{
} WsOi,oG@
sl|_=oXT
/** }Je>;{&%
* @param data #A<P6zJXR
* @param l pq!%?m]
* @param i B'weok
*/ z@VP:au
private void insertSort(int[] data, int start, int len) { (@sp/:`6
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Hs(D/&6%
} Y+-xvx
:
} "!UVs+)]
} -1r2 K
} =A!S/;z>
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堆排序: :Vuf6,
G^Tk 20*
package org.rut.util.algorithm.support; 7;}l\VXHm
kQv*eZ~
import org.rut.util.algorithm.SortUtil; ;LwqTlJ*[L
xUWr}j4;
/** , c;eN
* @author treeroot t+TYb#Tc
* @since 2006-2-2 v"Jgw;3
* @version 1.0 0b|zk <
*/ "ZMkL)'7-
public class HeapSort implements SortUtil.Sort{ f4('gl9
%_M2N.n
/* (non-Javadoc) k(s;,B\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'r}fZ
*/ +M\8>/0oA
public void sort(int[] data) { !~iGu\y
MaxHeap h=new MaxHeap(); 2k
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h.init(data); E^Gg
'1
for(int i=0;i h.remove(); (9RslvKL
System.arraycopy(h.queue,1,data,0,data.length); cma*Dc
} mY&ud>,U:
M8;lLcgu.
private static class MaxHeap{ xFFr
sd0r'jb
void init(int[] data){ @xWdO,#
this.queue=new int[data.length+1]; )R)a@op
for(int i=0;i queue[++size]=data; JBX[bx52<r
fixUp(size); m7|RD]q&
} B|{I:[
} &xSa7FY
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private int size=0; !.X.tc
i%{X9!*%TX
private int[] queue; \ FzM4-
G*8GGWB^a
public int get() { 3smM,fi
return queue[1]; /!xF?OmVd
} 7^e +
8HErE<_(
public void remove() { $17
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SortUtil.swap(queue,1,size--); LLAa1Wq
fixDown(1); $p* p
} oR#:NtX@
file://fixdown e 9$C#D>D
private void fixDown(int k) { %}Q&1P=
int j; v> z@
while ((j = k << 1) <= size) { Sr.;GS5i
if (j < size %26amp;%26amp; queue[j] j++; C;B}3g&
if (queue[k]>queue[j]) file://不用交换 `k{& /]
break; 34AP(3w
SortUtil.swap(queue,j,k); 2&(sa0*y
k = j; |$lwkC)O
} N=1JhjVk"
} 90N`CXas
private void fixUp(int k) { A2H4k|8
while (k > 1) { -p,x&h,p
int j = k >> 1; }-<zWI{p
if (queue[j]>queue[k]) u' Qd,
break; }ynT2a#LU'
SortUtil.swap(queue,j,k); ug&[ IL~lc
k = j; j5
wRGn3
} ;e8V
+h
} =([av7
MQ/
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} 76fIC
t2{~bzq1X
} k!XhFWb
]rBM5~
SortUtil: Z0,~V
d.<~&.-$
package org.rut.util.algorithm; kMxazx1
tJI,r_
import org.rut.util.algorithm.support.BubbleSort; w5C*L)l
import org.rut.util.algorithm.support.HeapSort; +{`yeZ9S
import org.rut.util.algorithm.support.ImprovedMergeSort; 7Hw<ojkt
import org.rut.util.algorithm.support.ImprovedQuickSort; E">T*ao
import org.rut.util.algorithm.support.InsertSort; ZFh+x@
import org.rut.util.algorithm.support.MergeSort; D@YP7
import org.rut.util.algorithm.support.QuickSort; p#8W#t$
import org.rut.util.algorithm.support.SelectionSort; {==pZpyyh
import org.rut.util.algorithm.support.ShellSort; q`|CrOzO
< a rZbM
/** &x:JD1T}
* @author treeroot ztM<J+
* @since 2006-2-2 l0]d
* @version 1.0 ;."<m
*/ f>Td)s1
M
public class SortUtil { uYO|5a<f~
public final static int INSERT = 1; rjA@U<o
public final static int BUBBLE = 2; 0Ce]V,i6C>
public final static int SELECTION = 3; ik1tidw
public final static int SHELL = 4; n(Y%Vmy
public final static int QUICK = 5; rx~[Zs+*
public final static int IMPROVED_QUICK = 6; 2-If]Fc
public final static int MERGE = 7; ]hw-Bu\{
public final static int IMPROVED_MERGE = 8; }E<^gAh}
public final static int HEAP = 9; L wJ0
ENh8kD
l5
public static void sort(int[] data) { i^Ut015q%
sort(data, IMPROVED_QUICK); tl8O6`<Z
} +RZ~LA\+
private static String[] name={ =ZYThfAEw
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" N"5fmY<
}; B~WtZ-%%E
Dma.r
private static Sort[] impl=new Sort[]{ `\$8`Zb;
new InsertSort(), H3/caN:
new BubbleSort(), 1cN')"
new SelectionSort(), VAQ)Hc]
new ShellSort(), h=VqxGC&
new QuickSort(), dXvt6kF
new ImprovedQuickSort(), 4)-)# `K
new MergeSort(), nY-* i!H
new ImprovedMergeSort(), JyBp-ii
new HeapSort() _cqy`p@"
}; }6zbT-i
%FkLQ+v/<
public static String toString(int algorithm){ b}z`BRCc
return name[algorithm-1]; 6Y*;{\Rd
} 70W"G
X&
]TpU"JD
public static void sort(int[] data, int algorithm) { f|3q^wjs
impl[algorithm-1].sort(data); GRYe<