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。 8>:2li
插入排序: B T{({3
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package org.rut.util.algorithm.support; 9>@"W-
1G8t=IA%D
import org.rut.util.algorithm.SortUtil; b;|^62
/** eP3 itrH(
* @author treeroot :\1&5Pm]
* @since 2006-2-2 9Bmgz =8
* @version 1.0 JeCEj=_Z
*/ X_|} b[b
public class InsertSort implements SortUtil.Sort{ %^E>~
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/* (non-Javadoc) [
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r?2C%GI`
*/ X4*/h$48 w
public void sort(int[] data) { C[$<7Mi|;
int temp; l}c<eEfOy"
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `wG&Cy]v
} %nc+VL4
} cKy%0oTla
} |b7>kM}"
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}
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冒泡排序: ')FNudsC
`^N;%[c`z
package org.rut.util.algorithm.support; .g&BA15<F6
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import org.rut.util.algorithm.SortUtil; ,9M \`6
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/** %BHq2~J
* @author treeroot h;unbz
* @since 2006-2-2 p-/x Md
* @version 1.0 pV-.r-P
*/ qC|re!K
public class BubbleSort implements SortUtil.Sort{ aA
yFu_
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/* (non-Javadoc) @o^sp|k !
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AU$5"kBE
*/ %I=J8$B]f
public void sort(int[] data) { Y2D)$
int temp; -s!PO;qm
for(int i=0;i for(int j=data.length-1;j>i;j--){ $fvUb_n
if(data[j] SortUtil.swap(data,j,j-1); cE]kI,Fw,M
} YGn:_9
} 6ensNr~ea
} `") I[h
} 6<~y!\4;F
3 \WdA$Wx
} >)
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选择排序: Tp6ysjao
},L[bDOV07
package org.rut.util.algorithm.support; f!Ie
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import org.rut.util.algorithm.SortUtil; G`W+m*[U+M
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/** u1kbWbHu(
* @author treeroot hP#&]W3:
* @since 2006-2-2 xO@OkCue
* @version 1.0 %`\{Nxk
*/ gR>#LM&dG
public class SelectionSort implements SortUtil.Sort { 6%xl}z]o
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/* &\K#UVDyhh
* (non-Javadoc) Bms?`7}N
* ,?f(~<Aj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sR0nY8@F
*/ WL~`L!_. A
public void sort(int[] data) { DpR%s",Q
int temp; i!nl%%
for (int i = 0; i < data.length; i++) { %?$"oWmenS
int lowIndex = i; JZ7-?
o
for (int j = data.length - 1; j > i; j--) { nC Z
if (data[j] < data[lowIndex]) { u60l -
lowIndex = j; %~[F^
} -
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} 1f:k:Y9i
SortUtil.swap(data,i,lowIndex); vT~ a}
} =w5w=qB
} E0PBdiD6hs
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} M;bQid@BG
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Shell排序: 5f5`7uVJF
s_8!x
package org.rut.util.algorithm.support; uQNoIy J)
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import org.rut.util.algorithm.SortUtil; h 2zCX
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/** q.t5L=l^
r
* @author treeroot mB~&nDU
* @since 2006-2-2 PrcM'Q
* @version 1.0 b +_E)4
*/ }1P
public class ShellSort implements SortUtil.Sort{ J5"*OH:f
*$1)&2i
/* (non-Javadoc) 5%$#3LT|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k4P.}SJ?
*/ V+q RDQ
public void sort(int[] data) { Sq'z<}o
for(int i=data.length/2;i>2;i/=2){ P;/T`R=Vr"
for(int j=0;j insertSort(data,j,i); '$VR_N\
} ^b#E%Rd
} ]=3O,\
insertSort(data,0,1); 2S4z$(x3
} V_QVLW
|+bG~~~%j
/** .,,73"
* @param data (!(bysi9
* @param j F*=RP$sj
* @param i Mg$Z^v|}0
*/ N@$%0!
private void insertSort(int[] data, int start, int inc) { qG qu/$bh
int temp; '9gI=/29D
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); uwka 2aSS
} |<0@RCgM
} #rwR)9iC0
} *GhRU5
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sx
} >R<fm
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快速排序: #u$z-M !
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package org.rut.util.algorithm.support; K/-D 5U
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import org.rut.util.algorithm.SortUtil; DvCt^O*
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/** I'C,'
* @author treeroot :Eyv= =
* @since 2006-2-2 7w*&Yg]
* @version 1.0 d8#j@='a*
*/ ?+\,a+46P_
public class QuickSort implements SortUtil.Sort{ 7fqYSMHR
nz\fN?q
/* (non-Javadoc) rWXW}Yg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) De_</1Au!2
*/ as4NvZ@+r
public void sort(int[] data) { F?kVW[h?q
quickSort(data,0,data.length-1); w$4Lu"N:
} O|~'-^
private void quickSort(int[] data,int i,int j){ !Xi>{nV
int pivotIndex=(i+j)/2; d#Ajb
file://swap Kc0OLcu^d
SortUtil.swap(data,pivotIndex,j); vp@+wh]#
[4j;FN Fa
int k=partition(data,i-1,j,data[j]); v3Yj2LSqx
SortUtil.swap(data,k,j); bB-v ar
if((k-i)>1) quickSort(data,i,k-1); 3#[I_
if((j-k)>1) quickSort(data,k+1,j); MV}]i@V
t^5_;sJQ
} p/~kw:I
/** 6pR#z@,
* @param data aw1J#5j`n
* @param i HV.7IyBA^
* @param j X;:xGZ-oY
* @return 3)a29uc:U
*/ ltR^IiA}
private int partition(int[] data, int l, int r,int pivot) { (SK5pU
do{ ]w>fnew
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); K~-XDLh5Nu
SortUtil.swap(data,l,r); ZZ*k3Ce
} [B`P]}gL:
while(l SortUtil.swap(data,l,r); ;G]'}$`/q
return l; :\_MA^<
} F.D1;,x
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} ud D[hPJd
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改进后的快速排序: ;[ueNP%*y|
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package org.rut.util.algorithm.support; XD }_9p
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import org.rut.util.algorithm.SortUtil; @/L. BfTz
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/** -d'|X`^nE
* @author treeroot x~^I/$
* @since 2006-2-2 |81N/]EER
* @version 1.0 6~WE#z_
*/ o q)"1
public class ImprovedQuickSort implements SortUtil.Sort { V&v~kzLr+
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private static int MAX_STACK_SIZE=4096; gq3OCA!cX
private static int THRESHOLD=10; GuvF
/* (non-Javadoc) |LE++t*X~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mtddLd,
*/ e622{dfVS
public void sort(int[] data) { v^fOT5\
int[] stack=new int[MAX_STACK_SIZE]; [)>8z8'f
mp3_n:R?
int top=-1; [_b='/8
int pivot; }Xv1KX'
int pivotIndex,l,r; 1iL
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stack[++top]=0; XF$]KAL0
stack[++top]=data.length-1; z %E!tB2o
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while(top>0){ G!%XQ\a!
int j=stack[top--]; {NgY8wQB
int i=stack[top--]; 9mphj)`d;#
gEHfsR=D6
pivotIndex=(i+j)/2; >0#q!H,X
pivot=data[pivotIndex]; arVf"3a
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SortUtil.swap(data,pivotIndex,j); >Eg .c
+N:6wZ7<f
file://partition xGv,%'u\
l=i-1; ]},Q`n>$
r=j; J&65B./mD9
do{ 1e&b;l'*=
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ![ID0}MjJ
SortUtil.swap(data,l,r); 14!a)Ijl
} 9k[},MM
while(l SortUtil.swap(data,l,r); I} fcFL8
SortUtil.swap(data,l,j); {<[tYZmj.
vqz#V=J{
if((l-i)>THRESHOLD){ -01 1U!
stack[++top]=i; t0d '>
stack[++top]=l-1; {}&f\6OI%
} E/$@ud|l"
if((j-l)>THRESHOLD){ LE80`t>M#
stack[++top]=l+1; *1S.9L
stack[++top]=j; _|wY[YJ[
} x~Ly$A2p
4eL54).1O
} LY:?OGh
file://new InsertSort().sort(data); ?mfWm{QTt
insertSort(data); 8!Mzr1:
} BBE1}V!u
/** ^^3va)1{!
* @param data ZfCr"aL
*/ gdFoTcHgO|
private void insertSort(int[] data) { wDMB
int temp; 4m[C-NB!g
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); A6 y~_dt
} Hs-.83V
}
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} V3~a!k
^
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} B "F`OS[
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归并排序: Q[Sd
@TPgA(5NR
package org.rut.util.algorithm.support; $0S#d@v}
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import org.rut.util.algorithm.SortUtil; 1S]gD&V
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/** '7LJuMp$#
* @author treeroot /0&:Yp=>
* @since 2006-2-2 ~eOj:H
* @version 1.0 {G1aAM\Hz
*/ 1L=Qg4 H
public class MergeSort implements SortUtil.Sort{ s]<r
v\9,j
/* (non-Javadoc) cU5"c)$'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2T(,H.O
*/ IQi[g~E.5
public void sort(int[] data) { [(hvK{)
int[] temp=new int[data.length]; 9_A0:S9Z
mergeSort(data,temp,0,data.length-1); /xm#:+Sc
} :;*#Qh3"
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private void mergeSort(int[] data,int[] temp,int l,int r){ pM'IQ3N
int mid=(l+r)/2; } .H Fm'p
if(l==r) return ; Re,$<9V
mergeSort(data,temp,l,mid); s!;VUr\
mergeSort(data,temp,mid+1,r); pg}+lYGP
for(int i=l;i<=r;i++){ .UhBvHH
temp=data; ZDkD%SCy
} rE{Xo:Cf
int i1=l; CVSsB:H6e
int i2=mid+1; s@)"IdSA(
for(int cur=l;cur<=r;cur++){ EfBVu
if(i1==mid+1) !k= 0X\5L
data[cur]=temp[i2++]; azDC'.3{p
else if(i2>r) ^Im%D(MY
data[cur]=temp[i1++]; uJ/?+5TU
else if(temp[i1] data[cur]=temp[i1++]; 5ih"Nds[H
else !ga(L3vf
data[cur]=temp[i2++]; Z(k\J|&9C
} jl e%|8m&@
} ci_v7Jnwo
Bpm5dT;
} 51ajE2+X&
U_}A{bFG
改进后的归并排序: sAD P~xvU
K)Xs L
package org.rut.util.algorithm.support; W]yClx \
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import org.rut.util.algorithm.SortUtil; ;4/dk_~p]
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/** F@K*T2uh
* @author treeroot ? __aVQ7
* @since 2006-2-2 d7_ g
u
* @version 1.0 0n<(*bfW
*/ w^dueP7J
public class ImprovedMergeSort implements SortUtil.Sort { $uFh$f
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private static final int THRESHOLD = 10; v<7Gln
D _bkUR1
/* +{C9uY)$vf
* (non-Javadoc) #[U9(44,
* >\?z37:T
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Yf!*OGF
*/ eb.cq"C
public void sort(int[] data) { @( n^S?(
int[] temp=new int[data.length]; 16[-3cJ T
mergeSort(data,temp,0,data.length-1); :B*vkwT
} ^QXw[th!d
pe!dm}!h[
private void mergeSort(int[] data, int[] temp, int l, int r) { e\A(#l@g
int i, j, k; 2%{YYT
int mid = (l + r) / 2; GIRSoRVsh
if (l == r) /J[H5uA
return; =,AC%S_D~
if ((mid - l) >= THRESHOLD) orB8Q\p'
mergeSort(data, temp, l, mid); KCJN<
else ?9(o*lp
insertSort(data, l, mid - l + 1); ;X$q#qzN#
if ((r - mid) > THRESHOLD) o/dMm:TF
mergeSort(data, temp, mid + 1, r); W) 33;E/}
else W<rTq0~$?
insertSort(data, mid + 1, r - mid); $@_<$t
G+hF
[b44'
for (i = l; i <= mid; i++) { Q_QKm0!
temp = data; $/, BJ/9
} Y[iDX#
for (j = 1; j <= r - mid; j++) { )H;pGM:
temp[r - j + 1] = data[j + mid]; C?w<$DU
} &$b\=
int a = temp[l]; TDAWI_83-
int b = temp[r]; .B 85!lCF
for (i = l, j = r, k = l; k <= r; k++) { P>{US1t
if (a < b) { $c@w$2
data[k] = temp[i++]; 83
i1
a = temp; Z@uTkqG)
} else { %qS]NC
data[k] = temp[j--]; bSrRsgKvT
b = temp[j]; B=Zl&1
} lJ:M^.Em0
} d`9W
} pwFU2}I
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/** ]3O
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* @param data Wa[x`:cT?u
* @param l VDByj "%
* @param i atLV`U&t
*/ e}'#Xv
private void insertSort(int[] data, int start, int len) { ^])e[RN7?n
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); zd*3R+>U'>
} $N}/1R^?r
} tjZ \h=
} Gh]_L+
} i\=z'
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堆排序: Sc1+(z
>
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package org.rut.util.algorithm.support; Q;$
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import org.rut.util.algorithm.SortUtil; s;fVnaqG:
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/** )\T@W
* @author treeroot $^W-Wmsz
* @since 2006-2-2 x],8yR)R
* @version 1.0 [!1)mR
*/ Fw_
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public class HeapSort implements SortUtil.Sort{ KqM! !
May&@x/oMS
/* (non-Javadoc) ^Yj"RM$;N
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q'Jv}'eK_
*/ Ni2]6U
public void sort(int[] data) { 9z5"y|$
MaxHeap h=new MaxHeap(); {8^Gs^c
c
h.init(data); `6a]|7|f
for(int i=0;i h.remove(); lpl8h4d
System.arraycopy(h.queue,1,data,0,data.length); v!NB~"LQ
} xn(+G$m
b!i`o%Vb
private static class MaxHeap{ e#>tM
c%|vUAq*
void init(int[] data){ cI*KRCU
this.queue=new int[data.length+1]; )Vwj9WD
for(int i=0;i queue[++size]=data; S5i+vUI8C
fixUp(size); _ Ry_K3K
} %&^Q(f
} R<f#r0 3@|
|h5kg<Zgo
private int size=0; OSp?okV
9pWi.J
private int[] queue; Wgxn`6
9<xTu>7J
public int get() { +"]oc{W!
return queue[1]; Zxg 1M
} `kv1@aQPL
eYJ{LPo
public void remove() { m)s
xotgXf
SortUtil.swap(queue,1,size--); <"*"1(wN
fixDown(1); ZhH+D`9
} hVMYB_<~
file://fixdown X?tj$
private void fixDown(int k) { o_iEkn
int j; +"'F Be
while ((j = k << 1) <= size) { tf4*R_6;1$
if (j < size %26amp;%26amp; queue[j] j++; ecn}iN
if (queue[k]>queue[j]) file://不用交换 :/+>e
IE
break; G49Ng|qn
SortUtil.swap(queue,j,k); )T>8XCL\}
k = j; 82lr4
} \X&]FZ(*
} <5dH *K
private void fixUp(int k) { x+4vss
while (k > 1) { iJ}2"i7M
int j = k >> 1; m&Lt6_vi
if (queue[j]>queue[k]) Z.!g9fi8>
break; HtxLMzgz<<
SortUtil.swap(queue,j,k); Osnyd+dJY
k = j; ya:sW5fk
} cv3L&zg M
} 3 h#s([uL
aiYo8+{!#
} kEO1TS
7'Lp8
} aC`Li^
}/20%fP
SortUtil: y =R
aJm
NdZ)[f:2
package org.rut.util.algorithm; 0f1H8zV
P*0f~eu
import org.rut.util.algorithm.support.BubbleSort; `%|u!
import org.rut.util.algorithm.support.HeapSort; *xPB<v2N:P
import org.rut.util.algorithm.support.ImprovedMergeSort; ugno]5Ni
import org.rut.util.algorithm.support.ImprovedQuickSort; ;v_ls)_,-
import org.rut.util.algorithm.support.InsertSort; */nuv
k
import org.rut.util.algorithm.support.MergeSort; dgXg kB'
import org.rut.util.algorithm.support.QuickSort; ]GNh)
import org.rut.util.algorithm.support.SelectionSort; I-,>DLG
import org.rut.util.algorithm.support.ShellSort; D}MoNE[r
ozU2
/** TM0b-W (H
* @author treeroot *|oPxQCtK
* @since 2006-2-2 F=srkw:*.
* @version 1.0 Vc| NL^
*/ *%X.ym'
public class SortUtil { T8U[xu.>
public final static int INSERT = 1; ^uhxURF
public final static int BUBBLE = 2; S/VA~,KCe;
public final static int SELECTION = 3; Q\|18wkW
public final static int SHELL = 4; 6J\q`q(W(
public final static int QUICK = 5; \7yJ\I
public final static int IMPROVED_QUICK = 6; #pX8{Tf[
public final static int MERGE = 7; v; Es^
YI
public final static int IMPROVED_MERGE = 8; WHP;Neb6
public final static int HEAP = 9; RK-x?ZYH'
Hq?& Qo
public static void sort(int[] data) { yxvjg\!&
sort(data, IMPROVED_QUICK); PcB{=L
} `NQ{)N0!
private static String[] name={ ijFV<P
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" zj{(p Z1
}; I0iY+@^5
_lP4}9p
private static Sort[] impl=new Sort[]{ 7,h3V=^)Q
new InsertSort(), Qwv '<
new BubbleSort(), 9\AS@SH{^T
new SelectionSort(), wlr Ign%
new ShellSort(), *Rq`*D>:U}
new QuickSort(), zka?cOmYF[
new ImprovedQuickSort(), ^sV|ck
new MergeSort(), .Vmtx
new ImprovedMergeSort(), +8f>^*:u
new HeapSort() 2 5Q+1
}; @V$I?iXV
&$F[/[Ds+
public static String toString(int algorithm){ -D#5o,]3
return name[algorithm-1]; T%kKVr
} ")ED)&e
9`BEi(z
public static void sort(int[] data, int algorithm) { &\k?xN
impl[algorithm-1].sort(data); %K?iNe
} .fEwk
Ukc'?p,*
public static interface Sort { jn$j^51`C
public void sort(int[] data); wWTQ6~Y%d
} '0RRFO
Ff<)4`J
public static void swap(int[] data, int i, int j) { B'p5M.6d#:
int temp = data; b66R}=P l
data = data[j]; [/OQyb4F<
data[j] = temp; ,]7XMU3
} &2{]hRM
} c|lU(Tf