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。 -,xsUw4
插入排序: x: Tm4V{
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package org.rut.util.algorithm.support; /?8rj3
|
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import org.rut.util.algorithm.SortUtil; qxwD4L`S
/** *C(XGX\?-
* @author treeroot ?<$DQ%bf
* @since 2006-2-2 ^$O,Gy) V
* @version 1.0 HQ8;d9cGir
*/
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public class InsertSort implements SortUtil.Sort{ I%G6V
a@
FZtIC77X5
/* (non-Javadoc) \.dvRI'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bxg9T(Bj
*/ {Uu|NA87Cd
public void sort(int[] data) { ddjaM/.E
int temp; &mvC<_1n
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); a)8M'f_z
} hbdM}"&]
} ZgI1Byf
} j1,ir
l<nL8/5{<
} bc|DC,n?
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冒泡排序: RV:%^=V-
-5yEd>Z
package org.rut.util.algorithm.support; "Tm`V9
9a9{OJa6M
import org.rut.util.algorithm.SortUtil; UYb:q
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/** MY}B)`yx=
* @author treeroot Ey;uaqt
* @since 2006-2-2 [&
&9F};
* @version 1.0 P\CT|K'P
*/ RoWGQney
public class BubbleSort implements SortUtil.Sort{ i/UHDqZ
i~6qOlLD-
/* (non-Javadoc) &<sDbNS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j!P]xl0vOZ
*/ H6XlSj
public void sort(int[] data) { tcf>9YsOr
int temp; t|aBe7t7
for(int i=0;i for(int j=data.length-1;j>i;j--){ #4*~ 4/
if(data[j] SortUtil.swap(data,j,j-1); 4HK#]M>yz
} ceR zHq=
} +H~})PeQ
} l;SqjkN
} y\&`A:^[ A
9q-9UC!g
} _YW1Mk1
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选择排序: Ie~#k[X
J_A5,K*r|
package org.rut.util.algorithm.support; #}W^d^-5t5
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import org.rut.util.algorithm.SortUtil; auTApYS53
\Z^YaKj&
/** Q_F8u!qrZ
* @author treeroot V4PD]5ZW
* @since 2006-2-2 Xo>P?^c4?
* @version 1.0 #yv_Eb02
*/ >\ :kP>U
public class SelectionSort implements SortUtil.Sort { KZw"?%H[
f6ad@2
/* >8nRP%r[5,
* (non-Javadoc) n
LZ
* l(@UpV-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O&?i8XsB
*/ Q!:J.J
public void sort(int[] data) { /K"koV;
int temp; d[5?P?h')
for (int i = 0; i < data.length; i++) { 8`*Wl;9u
int lowIndex = i; G.,dP+i
for (int j = data.length - 1; j > i; j--) { :.IVf Zw
if (data[j] < data[lowIndex]) { @<tkwu
lowIndex = j; mRw &^7r
} h$FpH\-
} +tNu8M@xFo
SortUtil.swap(data,i,lowIndex); >?q()>l
} kmm1b (
} k!K}<sX2
shOQ/
} 9air"4
hSq3LoHV
Shell排序: d([NU;
PG8|w[V1 "
package org.rut.util.algorithm.support; %+U.zd$
vl<W`)'
import org.rut.util.algorithm.SortUtil; :;S]jNy}j)
O<Rm9tZ8
/** T<"Hh.h
* @author treeroot i:wTPR
* @since 2006-2-2 -aPvls
* @version 1.0 4
e1=b,
*/ C#`VVtei
public class ShellSort implements SortUtil.Sort{ e.%`
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V^WR(Q}
/* (non-Javadoc) n0:Y*Op
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G%w hOIFRq
*/ K)c`G_%G
public void sort(int[] data) { mr]IxTv
for(int i=data.length/2;i>2;i/=2){ f\FubL
for(int j=0;j insertSort(data,j,i); SyFOf
} =#||&1U$
} lV/-jkR
insertSort(data,0,1); ^~k2(DLk
} L,L>cmpM
vkWh2z
/** ORhe?E]
* @param data y~CK&[H
* @param j fJ_d,4
* @param i oqa]iBO
*/ ^| L@f
private void insertSort(int[] data, int start, int inc) { g/&`NlD
int temp; Sdl1k+u
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); E^aHe
} kYBy\
} Z?yMy zT
} x}t,v.:
#%t&f"j2
} O`_!G`E
j3`#v3
快速排序: `,XCD-R^
Sq"O<FmI
package org.rut.util.algorithm.support; *5'U3py
cs[_5r&:
import org.rut.util.algorithm.SortUtil; RN(>37B3_
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/** Enu/Nj 2
* @author treeroot w8$rt
* @since 2006-2-2 ,f
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* @version 1.0 d7 )&Z:
*/ EHk(\1!V
public class QuickSort implements SortUtil.Sort{ DK8eFyG^2
Y)*5M
/* (non-Javadoc) =WFn+#&^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i7g+8zd8d
*/ bvY'=
public void sort(int[] data) { h/u>F$}c
quickSort(data,0,data.length-1); 6( 1xU\x
} o4I&?d7;"
private void quickSort(int[] data,int i,int j){ KLqn`m`O;
int pivotIndex=(i+j)/2; !vNZ-}
file://swap x8H%88!j*
SortUtil.swap(data,pivotIndex,j); kkfwICBI
~ KNdV
int k=partition(data,i-1,j,data[j]); 6")co9
SortUtil.swap(data,k,j); gY'w=(/`
if((k-i)>1) quickSort(data,i,k-1); e_3KNQ`kA
if((j-k)>1) quickSort(data,k+1,j); S}zh0`+d'Z
#$trC)? ~q
} 4j9
/** QIl![%
* @param data DoV<p?U
* @param i dxm_AUM
* @param j /9/svPc]
* @return Yv0;U Kd
*/ 5X^bvW26
private int partition(int[] data, int l, int r,int pivot) { &%YFO'>>}
do{ ('1k%`R%
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); slSQ \;CDA
SortUtil.swap(data,l,r); [5&zyIi
} s^nPSY!
while(l SortUtil.swap(data,l,r); ^fj):n5/
return l; ,/V'(\>
} mG,%f"b0
JI1O(
} [kc%+j<g
.:eNL]2%:
改进后的快速排序: fneg[K
r Ntc{{3_
package org.rut.util.algorithm.support; k&\YfE3*
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import org.rut.util.algorithm.SortUtil; lLuAZoH
F">>,Oc)U"
/** @ucN|r}=R
* @author treeroot RZykwD(
* @since 2006-2-2 A=X2zm>9
* @version 1.0 {V&
2k9*
*/ ,Mwyk1:xix
public class ImprovedQuickSort implements SortUtil.Sort { ZB-+bY
.F'fBT`$
private static int MAX_STACK_SIZE=4096; (n{sp
private static int THRESHOLD=10; <&'Y e[k
/* (non-Javadoc) QC:/xP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \Yv<TzJ9
*/ W68d"J%>_
public void sort(int[] data) { A:"J&TbBx
int[] stack=new int[MAX_STACK_SIZE]; =2%EIZ0oW
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int top=-1; )2Gp3oD?
int pivot; a7G0
int pivotIndex,l,r; zdA:K25"
=l`xXma
stack[++top]=0; 1XZ|}Xz
stack[++top]=data.length-1; ]Y[8|HJ8
v2<roG6.V
while(top>0){ rQNT
int j=stack[top--]; #80*3vi~F
int i=stack[top--]; @Kri)U
i
5 Vm
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pivotIndex=(i+j)/2; 06bl$%
pivot=data[pivotIndex]; "AjtNL5
;S+c<MSl
SortUtil.swap(data,pivotIndex,j); \~xOdqF/
kmM4KP#&|
file://partition 4%WV)lt
l=i-1; n3{m
"h3
r=j; pk'@!|g%=
do{ ki6`d?
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ~Z5?\a2Ld
SortUtil.swap(data,l,r); OT7F#:2`
} .kM74X=S
while(l SortUtil.swap(data,l,r); Hk-)fl#dr
SortUtil.swap(data,l,j); hoASrj{s
!x. ^ya
if((l-i)>THRESHOLD){ 7p}G!]`
stack[++top]=i; ^o't&
stack[++top]=l-1; $ 1(u.Ud
} tkdhT8_
if((j-l)>THRESHOLD){ JbYv <
stack[++top]=l+1; [|{yr
stack[++top]=j; d"78w-S
} Co8b0-Z
5| 2B@6-
} zY8"\ZB
file://new InsertSort().sort(data); r
@~T}<I
insertSort(data); -"5x? \.{m
} o}5:vi]
/** dJ`Fvj
* @param data a34'[R
*/
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private void insertSort(int[] data) { 3m4?l
~
int temp; HSx~Fs^J
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); c1/Gyq
} Sm#;fx+
} ua:.97~Ym
} CGg:e:4
|6B:tw/.
} B@*BcE?
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归并排序: xtjTU;T
-mZo`
package org.rut.util.algorithm.support; ?{q w
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import org.rut.util.algorithm.SortUtil; ,$3
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/** tZ[BfO
* @author treeroot [p@NzS/
* @since 2006-2-2 4:cbasy
* @version 1.0 p)tac*US
*/ QN-n9f8
public class MergeSort implements SortUtil.Sort{ c}mJ6Pt
:LVM'c62c>
/* (non-Javadoc) &+`l
$h
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NpD}7t<EF
*/ GT%V,OJ
public void sort(int[] data) { *NV`6?o@6
int[] temp=new int[data.length]; K_`*ZV{r
mergeSort(data,temp,0,data.length-1); )F? 57eh
} P0Na<)\'Y!
!N,Z3p>Q
private void mergeSort(int[] data,int[] temp,int l,int r){ `ea$`2
int mid=(l+r)/2; wRPBJ-C)
if(l==r) return ; UF<|1;'
mergeSort(data,temp,l,mid); /db?ltb
mergeSort(data,temp,mid+1,r); ~1Tz[\H#R
for(int i=l;i<=r;i++){ T-&CAD3 ,O
temp=data; fokT)nf~^8
} '*>LZo4
int i1=l; t@.gmUUA
int i2=mid+1; 7OtQK`P"A
for(int cur=l;cur<=r;cur++){ QC <(rx
if(i1==mid+1) h9+ylHW_cp
data[cur]=temp[i2++]; G !1- 20
else if(i2>r) 5?;'26iC
data[cur]=temp[i1++]; +nuv?QB/
else if(temp[i1] data[cur]=temp[i1++]; 6WfyP@f
else 5F2+o#*h
data[cur]=temp[i2++]; vkq?z~GA
} /N%f78
Z
} (53dl(L?
-|[_j$g
} CG9X3%xO%
)[oU|!@
改进后的归并排序: <O5;w
RMC|(Q<
package org.rut.util.algorithm.support; ` N(.10~
*`}_e)(k
import org.rut.util.algorithm.SortUtil; Y1k/ngH
sQJM 4'8f
/** qsvUJU
* @author treeroot *~!xeL
* @since 2006-2-2 +ZRsa`'^
* @version 1.0 MP}H
5
*/ 18[f_0@ #
public class ImprovedMergeSort implements SortUtil.Sort { f=K1ZD
:VN<,1s9p^
private static final int THRESHOLD = 10; Od&M^;BQ
WKah$l
/* MCh8Q|Yx4
* (non-Javadoc) ~;eWQwD
* iLmU|jdE
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,Qyz2-
w
*/ e_1mO 5z
public void sort(int[] data) { 1
9
k$)m
int[] temp=new int[data.length]; n[4Nu`E9
mergeSort(data,temp,0,data.length-1); CPVKz
} (X>y)V
l42m81x"
private void mergeSort(int[] data, int[] temp, int l, int r) { yFpHRfF}
int i, j, k; 'R,d?ikY
int mid = (l + r) / 2; ZC2C`S\xr
if (l == r) 5?O/Aub
return; Q`vyDoF
if ((mid - l) >= THRESHOLD) {t=Nnc15K
mergeSort(data, temp, l, mid); keJec`q=X
else %+I(S`}
insertSort(data, l, mid - l + 1); :/~vaCZ
if ((r - mid) > THRESHOLD) w:Lu
mergeSort(data, temp, mid + 1, r); _23sIUN c3
else ;*Rajq
insertSort(data, mid + 1, r - mid); HO@T2t[
V)@MM2,
for (i = l; i <= mid; i++) { gE
,j\M*
temp = data; ;~1r{kXxA"
} WHN b.>
for (j = 1; j <= r - mid; j++) { .vW~(ZuD
temp[r - j + 1] = data[j + mid]; 4|2$b:t
} VBH[aIW
int a = temp[l]; Nb];LCx
int b = temp[r]; O"#`i{^?2
for (i = l, j = r, k = l; k <= r; k++) { %<M<'jxSca
if (a < b) { dX$])b_Uw
data[k] = temp[i++]; p +T&9
a = temp; D~?kvyJ
} else { %I.{umU
data[k] = temp[j--]; -:~`g*3#
b = temp[j]; `PW=_f={
} he+[
}
9Np0<e3p
} |wLQ)y*
cbwzT0
/** *$cp"
* @param data xc/|#TC8?
* @param l <GNOT"z
* @param i l?R_wu,Q
*/ 0l:5hD,)F
private void insertSort(int[] data, int start, int len) { eXOFA d]>u
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); X~DXx/9
} P9>C!0 -x
} 6AwnmGL(;;
} w-#0k.T
} H9>&"=".
A N%.LK
堆排序: 2ga}d5lu
4`UT_LcI
package org.rut.util.algorithm.support; ; Q 6:#
N|~&Q!A&
import org.rut.util.algorithm.SortUtil;
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\6'A^cE/PX
/** ib&qH_r/
* @author treeroot xaS
* @since 2006-2-2 v'>Yc#VJ
* @version 1.0 E, v1F!
*/ )m'_>-`^:
public class HeapSort implements SortUtil.Sort{ P\AH9#XL
UF%5/SiVX
/* (non-Javadoc) 3LxJ}>]TO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }O>Zu[8a
*/ ;VuB8cnL`
public void sort(int[] data) { ,9pi9\S
MaxHeap h=new MaxHeap(); f2u2Ns0Ym
h.init(data); 5&kR1Bp#-
for(int i=0;i h.remove(); "J.jmR;
System.arraycopy(h.queue,1,data,0,data.length); }dHiW:J>
} \k,bz0
4bBxZY
private static class MaxHeap{ 9F+bWo_m
>ahj|pm
void init(int[] data){ z
K(5&u
this.queue=new int[data.length+1]; ;MMFF {
for(int i=0;i queue[++size]=data; ^~aSrREo
fixUp(size); RnrM
rOh
} j<KC$[Kt
} <^\r9Qxl
:mrGB3x{
private int size=0; /trc&V
h+W^k+~(
private int[] queue; bS'r}
)q^vitkjup
public int get() { 10J*S[n1
return queue[1]; (J4utw Z
} %:,=J
gQEV;hCO
public void remove() { Ueeay^zN
SortUtil.swap(queue,1,size--); x-pMT3m\D#
fixDown(1); Pc7:hu
} U %ESuq#
file://fixdown cP1jw%3P
private void fixDown(int k) { k:TfE6JZ
int j; f3N:MH-c
while ((j = k << 1) <= size) { 8Vn6* Xn
if (j < size %26amp;%26amp; queue[j] j++; }$)<k
if (queue[k]>queue[j]) file://不用交换 *Vl
=PNn-
break; jvV8`BQ{
SortUtil.swap(queue,j,k); z~H Gc"~
k = j; injmP9ed
} gJ&!w8v.
} , _$"6
private void fixUp(int k) { tTt3D]h(
while (k > 1) { ]#$kA9
int j = k >> 1; LU{Z
if (queue[j]>queue[k]) ]~^/w}(K
break; 8UIL_nPO
SortUtil.swap(queue,j,k); =5ih,>>g
k = j; 4I-p/&Q
} //Gvk|O1
} O i0;.<kX
JY2
F-0t)
} j''Iai_
!I[n|r "
} 7fay:_
$vBU}~l7
SortUtil: (L>[,YO9
UTQKlwPa
package org.rut.util.algorithm; HD{`w1vcN
k&/)g3(N(
import org.rut.util.algorithm.support.BubbleSort; IDh`0/i]
import org.rut.util.algorithm.support.HeapSort; qN[7zsaj
import org.rut.util.algorithm.support.ImprovedMergeSort; N%f!B"NQ
import org.rut.util.algorithm.support.ImprovedQuickSort;
nvPE
N
import org.rut.util.algorithm.support.InsertSort; D-GU"^-9
import org.rut.util.algorithm.support.MergeSort; `#rfp
9w
import org.rut.util.algorithm.support.QuickSort; /6?plt&CA
import org.rut.util.algorithm.support.SelectionSort; $3'+V_CZ3
import org.rut.util.algorithm.support.ShellSort; L"iyjL<M
~
ZL`E
/** Fnpn_O XlH
* @author treeroot t^,Qy.L0
* @since 2006-2-2 358/t/4{p
* @version 1.0 Pm^N0L9?q
*/ @;fE%N
public class SortUtil { xLI{=sL
public final static int INSERT = 1; U
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public final static int BUBBLE = 2; HF: T]n,
public final static int SELECTION = 3; LUNs|\&
public final static int SHELL = 4; Wi?%)hur
public final static int QUICK = 5; DME?kh>7
public final static int IMPROVED_QUICK = 6; X-1Vp_(,TP
public final static int MERGE = 7; Z9&D'n)
public final static int IMPROVED_MERGE = 8; 8-a6Q|
public final static int HEAP = 9; uX +<`3O
6I.m c
public static void sort(int[] data) { n[Iu!v\/*
sort(data, IMPROVED_QUICK); ^|GtO.
} n2mw@Ay!
private static String[] name={ %^=!s
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ph?0I:eU
}; g>xUS_d>
)v=G}j^
private static Sort[] impl=new Sort[]{ cXcx_-
new InsertSort(), (VaN\+I:T
new BubbleSort(), RVnyl`s
new SelectionSort(), h+3Z.WKhwP
new ShellSort(), `4.sy +2
new QuickSort(), Ig3(|{R
new ImprovedQuickSort(), g]<Z]R`
new MergeSort(), SP*JleQN
new ImprovedMergeSort(), 'ZH<g8:=@
new HeapSort() iM|"H..
}; =)- Q?1q
$O e 58
public static String toString(int algorithm){ %s2"W~
return name[algorithm-1]; ;Uqx&5P}
} "qTC(F9N$.
Q 95
public static void sort(int[] data, int algorithm) { k!/_/^{
impl[algorithm-1].sort(data); 1Bk*G>CX9(
} @zynqh
a\69,%!:
public static interface Sort { S"^KJUUc
public void sort(int[] data); @B'8SLoP
} bsi q9$F
@'r`(o3z!Z
public static void swap(int[] data, int i, int j) { Ui|a}`c
int temp = data; Z;y}gv/{
data = data[j]; bepYeT
data[j] = temp; 3{4/7DcX
} Sq|1f?_gU
} =x0"6gTz>