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。 [
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插入排序: 9$e$L~I#u
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package org.rut.util.algorithm.support; 7=u
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import org.rut.util.algorithm.SortUtil; {D..(f1*u
/** Ri_2@U-
* @author treeroot z#PaQp5F
* @since 2006-2-2 ru 9@|FgAE
* @version 1.0 NQ[X=a8N
*/ ty#6%
public class InsertSort implements SortUtil.Sort{ Zr2T^p5u
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/* (non-Javadoc) >K4Nn(~ys
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BgUp~zdo
*/ z_R^C%0k
public void sort(int[] data) { (tVT&eO
int temp; [:gg3Qzx
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *P7/ry^<F
} siCm)B
} W!O/t^H>
} )$i,e`T
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} N *$GP3]
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冒泡排序: !
M CV@5$
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package org.rut.util.algorithm.support; Il*!iX|23<
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import org.rut.util.algorithm.SortUtil; 9DM,,h<`
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/** bfoTGi
* @author treeroot '1b)(IW
* @since 2006-2-2 9@ fSO<
* @version 1.0 CR9wp]-Vd
*/ GwP!:p|
public class BubbleSort implements SortUtil.Sort{ '/03m\7
snfFRc(RE
/* (non-Javadoc) d|Wqx7t]P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zz(|V
*/ RnRUJNlaG
public void sort(int[] data) { EKF4]
int temp; K/N{F\
for(int i=0;i for(int j=data.length-1;j>i;j--){ T"za|Fo
if(data[j] SortUtil.swap(data,j,j-1); U_PH#e
} V-go?b`
} F09%f"9
} "h[)5V{
} fvH{va.
R59iuHQ[
} i?(cp["7
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选择排序: =d ;#Nu-
JZxA:dg
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package org.rut.util.algorithm.support; c,;VnZ
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import org.rut.util.algorithm.SortUtil; ~!5Qb{^
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/** "~ $i#
* @author treeroot ZpOME@9,
* @since 2006-2-2 LkzA_|8:D
* @version 1.0 :* ]#n
*/ XK/l1E3N
public class SelectionSort implements SortUtil.Sort { nyR<pnuC'
62'9lriQ
/* 4Ps;Cor+
* (non-Javadoc) >I~Q[
* H^S<bZ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8r+u!$i!H
*/ 'R-\6;3E>9
public void sort(int[] data) { 9%NsW3|
int temp; Km=
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for (int i = 0; i < data.length; i++) { ^ /G ;
int lowIndex = i; )6p6<y
for (int j = data.length - 1; j > i; j--) { \rUKP""m
if (data[j] < data[lowIndex]) { GU/P%c/V
lowIndex = j; ?32~%?m
} A+dx7anUz
} ,|VLOY^
SortUtil.swap(data,i,lowIndex); &XcPHZy'
} 4<UAT|L^`
} OZf@cOTWK
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} vO9=CCxvq
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Shell排序: )ADI[+KW
qvy*;
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package org.rut.util.algorithm.support; 'JdK0w#
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import org.rut.util.algorithm.SortUtil; pl@K"PRE
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/** ;g#nGs>
* @author treeroot <aaT,J8%[
* @since 2006-2-2 !'#
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* @version 1.0 9Ca0Tu
*/ LD?\gK"
public class ShellSort implements SortUtil.Sort{ +(:Qf+:
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/* (non-Javadoc) [6g$;SicT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t`hes
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*/ cjGN=|`u
public void sort(int[] data) { *u|1Z%XO
for(int i=data.length/2;i>2;i/=2){ PPG+~.7
for(int j=0;j insertSort(data,j,i); |n;);T(
} 1I'Q{X&B
} OYWHiXE6]
insertSort(data,0,1); V73/q
} PeiRe
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/** |LLpG37_
* @param data |dHtv 6I
* @param j #=)>,6Zw
* @param i Zi]E!Tgn
*/ Tzjv-9^V
private void insertSort(int[] data, int start, int inc) { 0wTOdCvmb
int temp; G!C }ULq
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 58HAl_8W
} ,']CqhL6=R
} NA0Z~Ug>
} DEkv,e
havmhS)O
} G{X7;j e
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快速排序: Zz:%KUl3
FhBV.,bU,m
package org.rut.util.algorithm.support; y?r`[{L(lA
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import org.rut.util.algorithm.SortUtil; ~AaEa,LQ
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/** Ug0c0z!b
* @author treeroot ,{(XT7hr
* @since 2006-2-2 {*8G<&
* @version 1.0 =6\^F i
*/ rZB='(?
public class QuickSort implements SortUtil.Sort{ x.pg3mVd>
j$6Q]5KdoS
/* (non-Javadoc) ,2FI?}+R
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i E;F=Rb
*/ oVp/EQ
public void sort(int[] data) { rzie_)a Y%
quickSort(data,0,data.length-1); Au)~"N~p?
} `wj'
private void quickSort(int[] data,int i,int j){ R64f0NK.
int pivotIndex=(i+j)/2; 6)i>qz).
file://swap m-~3c]pA
SortUtil.swap(data,pivotIndex,j); cotySio$
ppLLX1S
int k=partition(data,i-1,j,data[j]); M?P\ YAn$
SortUtil.swap(data,k,j); Br<lP#u=G
if((k-i)>1) quickSort(data,i,k-1); *a8 <cf
if((j-k)>1) quickSort(data,k+1,j); iYYuZ.
a0A=R5_
} * Z)j"i
/** 4|Y1W}!0/
* @param data 1Lje.%(E.
* @param i dS Tyx#o
* @param j wRK27=\z
* @return m&q0 _nay
*/ |XNw&X1VF
private int partition(int[] data, int l, int r,int pivot) { ui`EODhA(
do{ {/5aF_0D.
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); o4yl3o
SortUtil.swap(data,l,r); x7gd6"10^
} (w"(RM~
while(l SortUtil.swap(data,l,r); WQ:Y NmQ1p
return l; GZx*A S]+
} UNv!G/i-5
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} =\ 5f_g2M
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改进后的快速排序: tZg)VJQys
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package org.rut.util.algorithm.support; >hG*=4oh
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import org.rut.util.algorithm.SortUtil; x}WP1YyT~
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/** 5f0g7w =-
* @author treeroot #M#$2Vt
* @since 2006-2-2 (5+g:mSfr
* @version 1.0 :p)^+AF"5
*/ M5:*aCN6P
public class ImprovedQuickSort implements SortUtil.Sort { jVoD9H
F/
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private static int MAX_STACK_SIZE=4096; \C>vj+!cJ
private static int THRESHOLD=10; j}tGcFwvSN
/* (non-Javadoc) ^ )!eiM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '+iLW~
*/ 14uv[z6
public void sort(int[] data) { f2Xn !]o
int[] stack=new int[MAX_STACK_SIZE]; ~@@$-,}X
@6R6.i5d
int top=-1; i+T5(P$
int pivot; -j rAk
int pivotIndex,l,r; 5efN5Kt
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stack[++top]=0; %FqQ+0^
stack[++top]=data.length-1; t"J{qfNs
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while(top>0){ &~B8~U4%
int j=stack[top--]; Ii/{xVMD
int i=stack[top--]; K]yWpW
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pivotIndex=(i+j)/2; 9FNsW$b?
pivot=data[pivotIndex]; =;I+:K
#bG6+"g{=L
SortUtil.swap(data,pivotIndex,j); &IRM<A!8
8gt*`]I
file://partition [,ulz4"
l=i-1; ;+o6"ky5
r=j; #CyqiOM\*
do{ }F9#3W&`c
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Q9f5}
SortUtil.swap(data,l,r); "8U=0 a
} BKE ?o^03
while(l SortUtil.swap(data,l,r); c(5XT[Tw
SortUtil.swap(data,l,j); :.a184ax
DC BN89#
if((l-i)>THRESHOLD){ 'q}f3u >
stack[++top]=i; vE#8&Zq
stack[++top]=l-1; ?X\.O-=4X
} i<tJG{A=
if((j-l)>THRESHOLD){ !SnLvW89Z
stack[++top]=l+1; '<ZHzDW@
stack[++top]=j; kou7_4oS
} 4
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${wp}<u_
} &?xmu204
file://new InsertSort().sort(data); /yY} .S
insertSort(data); +NvpYz
} jr#*;go
/** x`I Wo:j
* @param data 5~2_wWjX
*/ g$hEVT
private void insertSort(int[] data) { b<"jmB{
int temp; WMWMb3
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); QSM3qke
} SlT>S1`rnG
} cQBc6eAi
} #QSSpsF@
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} @k'V`ZQF
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归并排序: TVSCjI
Ux= B*m1@{
package org.rut.util.algorithm.support; 0mmHN`<
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import org.rut.util.algorithm.SortUtil; r[GH#vF;7
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/** WT1y7+_g(d
* @author treeroot yxf#@Je"
* @since 2006-2-2 A+4Kj~`!
* @version 1.0 "f~OC<GdYs
*/ s6_i>
public class MergeSort implements SortUtil.Sort{ b9-3
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/* (non-Javadoc) lHTr7uF(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !su773vo
*/ = iDd{$
public void sort(int[] data) { Bx$?*y&f!v
int[] temp=new int[data.length]; UM]3MS:[
mergeSort(data,temp,0,data.length-1); TGPZUyi3!=
} mV4gw'.;7
P7/Xh3
private void mergeSort(int[] data,int[] temp,int l,int r){ T:|p[Xbo
int mid=(l+r)/2; E:PPb9Kd
if(l==r) return ; OP-{76vE&b
mergeSort(data,temp,l,mid); \6"=`H0}
mergeSort(data,temp,mid+1,r); eT(X Ri0
for(int i=l;i<=r;i++){ #,XZ @u+
temp=data; a{rUk%x
} J}#2Wy^{
int i1=l; W5:fY>7
int i2=mid+1; ,7k1n{C)
for(int cur=l;cur<=r;cur++){ }? c%L8\
if(i1==mid+1) =]pEvj9o
data[cur]=temp[i2++]; Z ZCm438
else if(i2>r) R1<$VR
data[cur]=temp[i1++]; ^~@3X[No
else if(temp[i1] data[cur]=temp[i1++]; ;<GxonIV
else JV'aqnb.8\
data[cur]=temp[i2++]; j*4:4B%
} 5tLb
o
} |Sua4~yL(
=#<bB)59
} X{ 6a
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改进后的归并排序: $4)L~g|
r=AA
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package org.rut.util.algorithm.support; hk
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UTN[!0[
import org.rut.util.algorithm.SortUtil; 0]=Bqyg
g)|vS>^~
/** k"/Rjd(;
* @author treeroot 9e
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* @since 2006-2-2 )N1iGJO)
* @version 1.0 v'^}zO
*/ Sl<1Rme=w
public class ImprovedMergeSort implements SortUtil.Sort { }#g+~9UK
ozl!vf# kv
private static final int THRESHOLD = 10; :2C
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>Q[ Z{
/* eQn[
* (non-Javadoc) ?cKTeGrS
* ,IE.8h)H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WpnP^gmX
*/ %f1IV(3Qc
public void sort(int[] data) { Hr!$mf)h
int[] temp=new int[data.length]; -Wh 2hWg+
mergeSort(data,temp,0,data.length-1); -o!bO9vC
} ?d{O'&|:
)EKWsGNe/
private void mergeSort(int[] data, int[] temp, int l, int r) { f\.y z[
int i, j, k; ]+B.=mO_
int mid = (l + r) / 2; ^W@%(,xb
if (l == r) (~E-=+R[$&
return; z5Tsu1c
if ((mid - l) >= THRESHOLD) t+]1D@h v
mergeSort(data, temp, l, mid); H=g%>W%3
else b0f6p>~q^
insertSort(data, l, mid - l + 1); |>m'szca4
if ((r - mid) > THRESHOLD) 8c_X`0jy
mergeSort(data, temp, mid + 1, r); i?uX'apk
else RO%M9LISI
insertSort(data, mid + 1, r - mid); !y'>sAf
Ht\2 IP
for (i = l; i <= mid; i++) { "Jg.)1Jw
temp = data; H270)Cwn+
} k*\)z\f
for (j = 1; j <= r - mid; j++) { 4gNN "
temp[r - j + 1] = data[j + mid]; J]{<Z?%
} z,2*3Be6V
int a = temp[l]; $ Y^0l
int b = temp[r]; p4UEhT
for (i = l, j = r, k = l; k <= r; k++) { re}PpXRC
if (a < b) { r)K5<[\r
data[k] = temp[i++]; [?O4l`
a = temp; 8"-=+w.CZ
} else { HIvSpO
data[k] = temp[j--]; u U>L (
b = temp[j]; p|mFF0SL
} (c^ {T)
} i^ |G
} 3/yt
dC-~=}HR^
/** KRcB_(
* @param data ',t*:GBZCf
* @param l ZZTf/s*
* @param i ]FIIs58IM
*/ ~K<h~TNP
private void insertSort(int[] data, int start, int len) { 3;> z %{
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ]j6K3
} )cZHBG.0H
} .>.GQUr
} '`2MxRP
} xa<KF
O"\_%=X9
堆排序: Gau@RX:O
EJb+yy6
package org.rut.util.algorithm.support; |O oczYf
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import org.rut.util.algorithm.SortUtil; w\eC{,00:
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/** ?CC.xE
* @author treeroot T6=|)UTe1
* @since 2006-2-2 V+@ }dJS
* @version 1.0 5y\35kT'
*/ 7Hgn/b[?b
public class HeapSort implements SortUtil.Sort{ rwP)TJh"
6-TYOUm
/* (non-Javadoc) 1IS1P)4_0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?b{y#du2a
*/ f5b|,JJ
public void sort(int[] data) { 3!fR'L/i
MaxHeap h=new MaxHeap(); cRD;a?0/6s
h.init(data); F --b,,
for(int i=0;i h.remove(); j%-Ems*H
System.arraycopy(h.queue,1,data,0,data.length); ~ho,bwJM[T
} F8{gJaP x
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private static class MaxHeap{ 3\
Mt+!1{
t!6uz
void init(int[] data){ a=A12<
this.queue=new int[data.length+1]; pI8z.JD
for(int i=0;i queue[++size]=data; Tj_K5uccU}
fixUp(size); 8]`s&d@GY
} GIc q|Pe
} zuW4gJ
V:J|shRo
private int size=0; q0Q[]|L
"RK"Pn+
private int[] queue; .ve_If-Hg
7 vFmB
public int get() { U]vUa^nG
return queue[1]; .PVYYhrt
} M:%g)FgW
:/szA?:W
public void remove() { rg
k1.0U0
SortUtil.swap(queue,1,size--); 3'` &D/n
fixDown(1); )xa)$u
} 24? _k]Y
file://fixdown FZ+2{wIV^
private void fixDown(int k) {
aY(s
&
int j; DT>`.y%2W
while ((j = k << 1) <= size) { F9K`N8wlu
if (j < size %26amp;%26amp; queue[j] j++; iv6G9e{cx
if (queue[k]>queue[j]) file://不用交换 ,&=7ir14>R
break; Xn%7{%;h
SortUtil.swap(queue,j,k); Ao` e{
k = j; IE996
} JmK
)Y# A
} %M'`K
private void fixUp(int k) { wzwv>@}
while (k > 1) { a6./;OC
int j = k >> 1; 8w:mL^6x
if (queue[j]>queue[k]) __QnzEF
break; 6V1oZ-:}
SortUtil.swap(queue,j,k); ||pOiR5
k = j; Ua
6O~,\
} OEjX(F3=
} #@`c7SR
Ea<\a1Tl43
} X;6;v]
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eX0<
} =0Y0o_
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SortUtil: sfw*_}y
x,10o
package org.rut.util.algorithm; &`n:AR`
p19(>|$J
import org.rut.util.algorithm.support.BubbleSort; .$x}~Sw
import org.rut.util.algorithm.support.HeapSort; 9v*y&V9/
import org.rut.util.algorithm.support.ImprovedMergeSort; JluA?B7E
import org.rut.util.algorithm.support.ImprovedQuickSort; >W-xDzJry
import org.rut.util.algorithm.support.InsertSort; oYf+I
import org.rut.util.algorithm.support.MergeSort; juWXB+d2Y
import org.rut.util.algorithm.support.QuickSort; p qpsa'
import org.rut.util.algorithm.support.SelectionSort; ?#: ']q
import org.rut.util.algorithm.support.ShellSort; vvxD}p=y
Lv/}&'\(
/** u;rmqo1
* @author treeroot RS}_cm0
* @since 2006-2-2 L3wj vq^
* @version 1.0 ]oSx]R>{f
*/ YQd($
public class SortUtil { xPUukmG:B
public final static int INSERT = 1; NJr)f
public final static int BUBBLE = 2; S>(x x"Ia
public final static int SELECTION = 3; FO^6c
public final static int SHELL = 4; Ayqs~&{
public final static int QUICK = 5; uIO,9> ee
public final static int IMPROVED_QUICK = 6; [j@i^B &
public final static int MERGE = 7; zzI,iEG
public final static int IMPROVED_MERGE = 8; 9M9Fif.
public final static int HEAP = 9; F#<:ZByjJ@
2D"my]FnF
public static void sort(int[] data) { `V V>AA5
sort(data, IMPROVED_QUICK); M$ieM[_T
} *'aJO}$
private static String[] name={ +,)k@OI
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ll$mRC
}; uuFQTx))
WeH_1$n5
private static Sort[] impl=new Sort[]{ W[)HFh(#
new InsertSort(), hkb\GcOj
new BubbleSort(), kDmuj>D
new SelectionSort(), vqf}(/.D
new ShellSort(), $+44US
new QuickSort(), [3-u7Fx!
new ImprovedQuickSort(), .Er+*j;&w
new MergeSort(), 1/:vFX
new ImprovedMergeSort(), 6-"tQ,AZ
new HeapSort() P8dMfD*"E
}; s,[I_IiPf
-nC&t~sD
public static String toString(int algorithm){ e> 9X
return name[algorithm-1]; CckfoJ 9
} zsQkI@)sO
$=E4pb4Y
public static void sort(int[] data, int algorithm) { Lc}hjK
impl[algorithm-1].sort(data); L7rr/D
} 5TuwXz1v
e#mf{1&
public static interface Sort { <BBzv-?D
public void sort(int[] data); +0ukLc@
} .{8[o[w
=
iC iKr aW
public static void swap(int[] data, int i, int j) { Y_y!$jd(N
int temp = data; iY@}Q "
data = data[j]; g_l-@
data[j] = temp; _7:Bxx4B
} *:
FS/ir
} LNk :PD0m