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。 (+4gq6b
插入排序: W>wIcUP<<
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package org.rut.util.algorithm.support; 1Nx%uz
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import org.rut.util.algorithm.SortUtil; $f_;>f2N
/** *hF5cM[
* @author treeroot M cNj TD
* @since 2006-2-2 zbddn4bW9
* @version 1.0 $d:/cN
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*/
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public class InsertSort implements SortUtil.Sort{ D4}WJMQ7s
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/* (non-Javadoc) 1'"o; a]k/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L/%3_,
*/ ~4=4Ks0
public void sort(int[] data) { 1jh^-d5
int temp; AVOqW0Z+y
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 58mzh82+
} \x(J vDt
} 4Yt:PN2
} J*.Nf)i
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冒泡排序: Fr,>|
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package org.rut.util.algorithm.support; <&8cq@<
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import org.rut.util.algorithm.SortUtil; [m|\N
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/** r@e_cD]
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* @author treeroot 5[al^'y
* @since 2006-2-2 wQ2'%T|t
* @version 1.0 5ii`!y
*/ <gZC78}E
public class BubbleSort implements SortUtil.Sort{ qX0IHe
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/* (non-Javadoc) TcpD*%wW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !!o69
*/ 2OAh7 '8<
public void sort(int[] data) { .<u<!fL2
int temp; rP2^D[uM.
for(int i=0;i for(int j=data.length-1;j>i;j--){ ]0ouJY
if(data[j] SortUtil.swap(data,j,j-1); j
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} A8e b{qv
} n1y#gC
} X~ P0Q
} Z#w1,n88
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} qOZc}J0
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选择排序: n6O1\}YB
UmiW_JB
package org.rut.util.algorithm.support; m1]rLeeEt
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import org.rut.util.algorithm.SortUtil; gO*cX&
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/** <H}"xp)j0
* @author treeroot 0Ny0#;P
* @since 2006-2-2 wjq f u /
* @version 1.0 >kz5azV0
*/ .3{S6#
public class SelectionSort implements SortUtil.Sort { miZ{V%
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/* z.e%AcX
* (non-Javadoc) GQ2&D}zh
* 0AJ6g@t[
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hi,_qlc+
*/ K?-K<3]9f
public void sort(int[] data) { p|(910OEQ
int temp; EVgn^,
for (int i = 0; i < data.length; i++) { C0i: *1
int lowIndex = i; VG&|fekF
for (int j = data.length - 1; j > i; j--) { Ad@))o2
if (data[j] < data[lowIndex]) { *S~. KW [
lowIndex = j; B V+"uF
} ?tqTG2! (
} BxG0vJN|
SortUtil.swap(data,i,lowIndex); w,eYrxR|N
} <g>_#fz"K
} ]hF[f|V
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} pSE"]N
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Shell排序: "uTzmm$
6by5VESx
package org.rut.util.algorithm.support; _m3PAD4
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import org.rut.util.algorithm.SortUtil; \ts:'
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/** pA(@gisg
* @author treeroot n$5,B*
* @since 2006-2-2 +Y)rv6}m
* @version 1.0 b]4yFwb
*/ {n$9o
public class ShellSort implements SortUtil.Sort{ eW\7X%I
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/* (non-Javadoc) KDRIy@[e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VH#]67
*/ rm2{PV<+d
public void sort(int[] data) { OPwp(b
for(int i=data.length/2;i>2;i/=2){ z}8rD}BH
for(int j=0;j insertSort(data,j,i);
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} #jA|04w
} |5e/ .T$
insertSort(data,0,1); -$dnUXFsj[
} NZ7a^xT_)
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/** S@N&W&W#~
* @param data 3|9)A+,#
* @param j = ;dupz\7
* @param i n U$Lp`
*/ [5 a`$yaQ
private void insertSort(int[] data, int start, int inc) { j,EE`g&
int temp; "LP4)hr_`
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); q/70fR7{v
} j#-ZL-N
} -a&wOn-W
} <gf:QX!
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} ~}83\LI}
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快速排序: <MT_zET
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package org.rut.util.algorithm.support; i1FFf[[ L
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import org.rut.util.algorithm.SortUtil; /~J#c=
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/** aJI>qk h?]
* @author treeroot Yfxc$ub
* @since 2006-2-2 Mgcq'{[~Y=
* @version 1.0 k5g\s9n]
*/ =J0FT2 d
public class QuickSort implements SortUtil.Sort{ ?#pL\1"E
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/* (non-Javadoc) jpm}EOq<%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ""CJlqU
*/ *7BY$q
public void sort(int[] data) { YDs/BF
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quickSort(data,0,data.length-1); h^x7[qe
} I[tU}oj P
private void quickSort(int[] data,int i,int j){ ?D57HCd`n
int pivotIndex=(i+j)/2; FE/&<g0,:
file://swap AWD &K!
SortUtil.swap(data,pivotIndex,j); {\C$Bz
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int k=partition(data,i-1,j,data[j]); {:S{a+9~
SortUtil.swap(data,k,j); J
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if((k-i)>1) quickSort(data,i,k-1); Yk?uxZ4)H
if((j-k)>1) quickSort(data,k+1,j); rAP+nh ans
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} P,I3E?! j
/** 6Oo'&3@
* @param data eA{,=,v)
* @param i ^4 es
* @param j 8'`&f&
* @return Y<a/(`
*/ c{||l+B
private int partition(int[] data, int l, int r,int pivot) { >a_K:O|AJ
do{ s_D7?o
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); mz9Kwxe
SortUtil.swap(data,l,r); (z^2LaM `8
} G!0|ocE}
while(l SortUtil.swap(data,l,r); 2R<1^
return l; 2z )h,<D
} ag|d_;
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} Br-y`s~cP
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改进后的快速排序:
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package org.rut.util.algorithm.support; Z( xn-
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import org.rut.util.algorithm.SortUtil; Fv);5LD
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/** AMD?LjY~
* @author treeroot ki~y@@3I
* @since 2006-2-2 )ClMw!ZrU
* @version 1.0 2vkB<[tSs
*/ uo4$rf7
public class ImprovedQuickSort implements SortUtil.Sort { bLM"t0
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private static int MAX_STACK_SIZE=4096; \FoxKOTp
private static int THRESHOLD=10; ,#bb8+z&p
/* (non-Javadoc) 4iv]N 4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #xP!!.DF(
*/ !b]2q%XM
public void sort(int[] data) { M=AvD(+ha
int[] stack=new int[MAX_STACK_SIZE]; U7"BlT!V\
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int top=-1; .K@x4
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int pivot; q#(/*AoU
int pivotIndex,l,r; (HaKF7Jsi
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stack[++top]=0; Y
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stack[++top]=data.length-1; 5M Wvu,'%8
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while(top>0){ hyOm9WU
int j=stack[top--]; .i+* #djx
int i=stack[top--]; @v~Pwr!
<m>l-]
pivotIndex=(i+j)/2; PNJe&q0*
pivot=data[pivotIndex]; f>8B'%]
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SortUtil.swap(data,pivotIndex,j); >WGP{
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file://partition ^V: "zzn&
l=i-1; >I d!I
r=j; lkg"'p{
do{ e$Bf[F#;-
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); i$bzdc#s
SortUtil.swap(data,l,r); {,Bb"0 \
} L-z;:Ztk
while(l SortUtil.swap(data,l,r); \oB'
SortUtil.swap(data,l,j); M20Bc, VI
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if((l-i)>THRESHOLD){ "brRME3
stack[++top]=i; }. xrJ52Tz
stack[++top]=l-1; B.YMP;7>
} B [+(r
if((j-l)>THRESHOLD){ 1 Itil~
stack[++top]=l+1; Q=(@K4
stack[++top]=j; o9ctJf=qn
} %GX uuE}mX
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} ^`rpf\GX(
file://new InsertSort().sort(data); d@4rD}_Z
insertSort(data); dd<:#c9
} pgLtD};S
/** Har~MO?A
* @param data qX5yN| A4
*/ 382*
private void insertSort(int[] data) { (T|TEt
int temp; sTtX$&Qu
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1yBt/U2
} 9c6czirwR^
} ?< cM^$lI>
} `/O`OrZ1K
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} OJP5k/U$
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归并排序: gB>imr#e&
sno`=+|U]
package org.rut.util.algorithm.support; ~)q g
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import org.rut.util.algorithm.SortUtil; 4M}|/?<Br
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/** 4^DVW*OiI
* @author treeroot XXW]0{k:y
* @since 2006-2-2 wG1y,u'
* @version 1.0 ;} l T
*/ KVB0IXZC~
public class MergeSort implements SortUtil.Sort{ w66v\x~
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/* (non-Javadoc) 90/vJN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D|d4:;7
*/ 7\A4vUI3
public void sort(int[] data) { *Jvxs
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int[] temp=new int[data.length]; Eh\ 1O(a(
mergeSort(data,temp,0,data.length-1); w6T[hZ 9
} FR:d^mL
7} be>(
private void mergeSort(int[] data,int[] temp,int l,int r){ UJz#QkAio
int mid=(l+r)/2; TE^7P0bh
if(l==r) return ; 0"EoC
mergeSort(data,temp,l,mid); "S5S|dBc
mergeSort(data,temp,mid+1,r); XTJvV
for(int i=l;i<=r;i++){ vS OT*0r
temp=data; EgTFwEj
} "8 N"Udu
int i1=l; M[, D *
int i2=mid+1; P|e`^Frxt
for(int cur=l;cur<=r;cur++){ ^=EjadVQ
if(i1==mid+1) 'p%=<0vrr
data[cur]=temp[i2++]; ZJ;LD*
else if(i2>r) *'D=1{WZ!
data[cur]=temp[i1++]; z[fB!O
else if(temp[i1] data[cur]=temp[i1++]; lT.zNhz:d9
else 2fJ{LC
data[cur]=temp[i2++]; v:KX9A.
} b'i'GJBQ+$
}
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} gQ37>
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改进后的归并排序: 9tn;L"#&N
JqEW=5
package org.rut.util.algorithm.support; -G9|n#zCU
C.~j'5N
import org.rut.util.algorithm.SortUtil; n` q2s'Pc
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/** s5l3V2k
* @author treeroot oid[syPB
* @since 2006-2-2 $;2)s}ci
* @version 1.0 o(*F])d;
*/ "O*x' XhN
public class ImprovedMergeSort implements SortUtil.Sort { |; $Bb866/
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private static final int THRESHOLD = 10; #^6^
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/* MIq"Wy|Zs
* (non-Javadoc) 3HZ~.
* J~KX|QY.S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8eluO ?p
*/ G"T\=cQz
public void sort(int[] data) { uWjN2#&,
int[] temp=new int[data.length]; fc@'9-pt
mergeSort(data,temp,0,data.length-1); G?`-]FMO
} ;+ azeW^
5 L/x-i
private void mergeSort(int[] data, int[] temp, int l, int r) { $5AC1g'
int i, j, k; c%z'xM
int mid = (l + r) / 2; 8d!GZgC8R
if (l == r) Qzqc .T
return; a+`D'?z
if ((mid - l) >= THRESHOLD) PWH^=K
mergeSort(data, temp, l, mid); =E(#YCx
else Z) Wnow
insertSort(data, l, mid - l + 1);
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if ((r - mid) > THRESHOLD) mN*?%t
mergeSort(data, temp, mid + 1, r); ;I}'}
else tdep|sD
insertSort(data, mid + 1, r - mid); A%u_&a}
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for (i = l; i <= mid; i++) { 7(bQ}mHl\
temp = data; K R, z^9
} +r]zs^'
for (j = 1; j <= r - mid; j++) { {tw+#}T a
temp[r - j + 1] = data[j + mid]; \'Ssn(s
} wN97_Y=`n
int a = temp[l]; %{!R
l@
int b = temp[r]; C&+6>L@
for (i = l, j = r, k = l; k <= r; k++) { Fv8f+)k)Z~
if (a < b) { LY 0]l$
data[k] = temp[i++]; Y9Z]i$qS&k
a = temp; Z^yNLF *&V
} else { "
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data[k] = temp[j--]; m^V5*JIh
b = temp[j]; _V2xA88
} |A\a4f'G
} 0
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} -fy9<
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/** >|g?wC}V;
* @param data :z&7W<
* @param l 8|@9{
* @param i fBhoGA{=g
*/ !m;H@KR{
private void insertSort(int[] data, int start, int len) { ml6u1+v5
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); D:"{g|nW}
} 8`=v.
} -TO\'^][X
} ;=4Xz\2
} /mA,F;
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堆排序: GbI-SbE
d\]Yk]r
package org.rut.util.algorithm.support; ]p7jhd=
)5_jmW`n
import org.rut.util.algorithm.SortUtil; 7fHc[,
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/** Y}s@WJ
* @author treeroot E&`Nh5 JfC
* @since 2006-2-2 /,@p\Ae5
* @version 1.0 gNYqAUG5
*/ bD^b
public class HeapSort implements SortUtil.Sort{ +Q$h ]^>~
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/* (non-Javadoc) #]P9b@@e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (wRgus
*/ !-<p,z
public void sort(int[] data) { |`TgX@,#9
MaxHeap h=new MaxHeap(); w[tmCn+
h.init(data); iOAbaPN
for(int i=0;i h.remove(); nKa$1RMO
System.arraycopy(h.queue,1,data,0,data.length); ^ D%FX!$
} i4JqT \q
UT0){%2@
private static class MaxHeap{ >P6BW
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void init(int[] data){ w| `h[/,
this.queue=new int[data.length+1]; ,R%q}IH#
for(int i=0;i queue[++size]=data; wX >*H
fixUp(size); Ar*^;/
} tW
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} h2ytS^
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private int size=0; *Kdda}
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private int[] queue; !?c|XdjZ
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public int get() { .X# `k
return queue[1]; y@0E[/O
} Pj}66.
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public void remove() { rj(T~d4
SortUtil.swap(queue,1,size--); C74a(Bk}H
fixDown(1); a~'a
} 9$2/MT't
file://fixdown 'yMF~r3J
private void fixDown(int k) { d3=KTTi\
int j; 0$,SF3K
while ((j = k << 1) <= size) { (sh)TBb5
if (j < size %26amp;%26amp; queue[j] j++; H\TI[JPAl
if (queue[k]>queue[j]) file://不用交换 /!c${W!sY
break; (Jz1vEEV
SortUtil.swap(queue,j,k); Y "/]|'p
k = j; >0"+4<72
} rqY`8Ry2M
} '&\kxNglJ
private void fixUp(int k) { Hy^N!rBxfO
while (k > 1) { B)0i:"q
int j = k >> 1; %}%Qc6.H
if (queue[j]>queue[k])
'FDef#P<
break; G K7![p
SortUtil.swap(queue,j,k); )e6)~3[^
k = j; AQR/nWwx
} yWkg4
} M+ljg&fy
f 3t&Bcw$
} "PhP1;A9,
xfsf
} kH9P(`;Vq
"pLWJvj6-
SortUtil: )*tV
WD${f#]N
package org.rut.util.algorithm; hNWZ1r~_
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import org.rut.util.algorithm.support.BubbleSort; Okt0b|=`1*
import org.rut.util.algorithm.support.HeapSort; }_vUs jK
import org.rut.util.algorithm.support.ImprovedMergeSort; 5q Y+^jO]o
import org.rut.util.algorithm.support.ImprovedQuickSort; !\RBOdw C
import org.rut.util.algorithm.support.InsertSort; z&x3":@u<
import org.rut.util.algorithm.support.MergeSort; I&lb5'6D
import org.rut.util.algorithm.support.QuickSort; ^w1&A3=6
import org.rut.util.algorithm.support.SelectionSort; `of`u B
import org.rut.util.algorithm.support.ShellSort; 5:W5@e{
`N.^+Mvx-
/** I C?bqC+
* @author treeroot Fu;\t 0
* @since 2006-2-2
7%g8&d
* @version 1.0 B>=NE.ulUL
*/ ~EJ+<[/
public class SortUtil { We51s^(
public final static int INSERT = 1; h|Z%b_a
public final static int BUBBLE = 2; /%4wm?(eA
public final static int SELECTION = 3; o:x,zfW
public final static int SHELL = 4; Z'F=Xw6;b
public final static int QUICK = 5; $22_>OsA
public final static int IMPROVED_QUICK = 6; +^0Q~>=VD
public final static int MERGE = 7; TcjTF|q>
public final static int IMPROVED_MERGE = 8; piv/QP-X
public final static int HEAP = 9; `$hna{e^n
GiH<