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。 T"za|Fo
插入排序: ]jVE
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package org.rut.util.algorithm.support; "h[)5V{
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import org.rut.util.algorithm.SortUtil; $"|r7n5[
/** 5m0lk|`
* @author treeroot 1~~GF_l?
* @since 2006-2-2 ?K:\WW
* @version 1.0 l P=I0A-
*/ e<1Ewml(]
public class InsertSort implements SortUtil.Sort{ ?G',Qtz<K
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/* (non-Javadoc) P%l?C?L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PcT]
*/ DMch88W
public void sort(int[] data) { a*X{hU9P
int temp; g3[-[G^5
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ([rn.b]
} VPT?z
} wS9V@
} rYdNn0mhk
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} f9>pMfi:@
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冒泡排序: zGg)R
#\Y`?
package org.rut.util.algorithm.support; F5cNF5
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import org.rut.util.algorithm.SortUtil; :P2!& W
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/** !xR9I0V5
* @author treeroot p\;8?x
* @since 2006-2-2 j[dZ*Jr_
* @version 1.0 F::Ki4{jJ
*/ 3>L5TYa
public class BubbleSort implements SortUtil.Sort{ }MMKOr(
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C
/* (non-Javadoc) )6p6<y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "k @[7
7
*/ Pi?G:IF
public void sort(int[] data) { 965 x_
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int temp; >Q@y8*E\F
for(int i=0;i for(int j=data.length-1;j>i;j--){ ?32~%?m
if(data[j] SortUtil.swap(data,j,j-1); Myg;2 .
} *`w>\},su
} m`8{arz2
} +l)t5Mg\
} ,@;|+C
4<UAT|L^`
}
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选择排序: &)tv4L&
,GVX1B?
package org.rut.util.algorithm.support; l%mp49<
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import org.rut.util.algorithm.SortUtil; #Ox@[Z1I
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/** $X Uck[
* @author treeroot V1d#7rP
* @since 2006-2-2 U.~G{H`G,u
* @version 1.0 s
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*/ u5rvrn ]
public class SelectionSort implements SortUtil.Sort { ZaY|v-
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/* l(Hz9
* (non-Javadoc) :qj^RcmVPL
* ydO G8EI
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ESoC7d&.K{
*/ 'Y
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public void sort(int[] data) { hVB(*WA^D
int temp; ,Il) t H
for (int i = 0; i < data.length; i++) { Q wG_-
int lowIndex = i; ZEDvY=@a
for (int j = data.length - 1; j > i; j--) { LD?\gK"
if (data[j] < data[lowIndex]) { #Pd__NV"\
lowIndex = j; 7\g#'#K
} jf;n*
} S`b!sT-sD
SortUtil.swap(data,i,lowIndex); ;/4x.t#b
} F`eE*&
} pO)EYla9
i; ]0>g4
}
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Shell排序: PPG+~.7
x5\D u63
package org.rut.util.algorithm.support; X8*~Cf73u
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import org.rut.util.algorithm.SortUtil; 4*f+np
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/** 6l4=
* @author treeroot YGQ/zB^Pj
* @since 2006-2-2 PY '^:0
* @version 1.0 8,h!&9
*/ 29G el
public class ShellSort implements SortUtil.Sort{ +Z_VF30pa
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/* (non-Javadoc) oKz!Xu%Hl
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J{a9pr6
*/ =c,7uB
public void sort(int[] data) { D{7^y>8_Y-
for(int i=data.length/2;i>2;i/=2){ <a_(qh@B
for(int j=0;j insertSort(data,j,i); _(:$
:*@
} vc3r [mT
} "R)n1,0
insertSort(data,0,1); 9L-jlAo<
} 1]0;2THx
\X(*JNQ
/** SzeY?04zj:
* @param data P $y'``
* @param j aYk: CYQ
* @param i &|'yqzS3
*/ l\N2C4NG
private void insertSort(int[] data, int start, int inc) { E%8uQ2p(
int temp; qo\9,<
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); l9j=;h
} s 8K.A~5 w
} F" M/gy
} [h
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xtai;
} XGe;v~L
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快速排序: &k_LK
AH'3
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package org.rut.util.algorithm.support; byt$Wqdl
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import org.rut.util.algorithm.SortUtil; FY)]yz
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/** M?('VOy)
* @author treeroot .C+(E@ey A
* @since 2006-2-2 P =Q+VIP&
* @version 1.0 a0A=R5_
*/ * Z)j"i
public class QuickSort implements SortUtil.Sort{ $g VbeQ
>;j&]]-&
/* (non-Javadoc) H~fF;
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qG~6YCqii
*/ `?l
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public void sort(int[] data) { 8n2;47 a
quickSort(data,0,data.length-1); <f.Eog
} Q qj9o2
private void quickSort(int[] data,int i,int j){ >e-0A
int pivotIndex=(i+j)/2; w9"~NK8xzM
file://swap y}={S,z%22
SortUtil.swap(data,pivotIndex,j); ZO<\rX (
OA}; pQ9QN
int k=partition(data,i-1,j,data[j]); g__s(
IJ
SortUtil.swap(data,k,j); dOaCdnd~
if((k-i)>1) quickSort(data,i,k-1); sL\ {.ad5
if((j-k)>1) quickSort(data,k+1,j); 6v%ePFul
]^wr+9zd
} 6#jql
/** %B1TN#KoT
* @param data mv,a>Cvs[
* @param i [x=(:soEqC
* @param j LN$T.r+
* @return d>MDC
.
j
*/ tV pXA'"!x
private int partition(int[] data, int l, int r,int pivot) { Tu}EAr
do{ =\)zb '\=d
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); };P=|t(r
SortUtil.swap(data,l,r); rxy5Nrue
} "dOQ)<;
while(l SortUtil.swap(data,l,r); d2U?rw_
return l; ofz?L#:2
} ?< yYm;B
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} z9
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改进后的快速排序: X6w+L?A
- 3PLP$P
package org.rut.util.algorithm.support; ([rSYKpi
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import org.rut.util.algorithm.SortUtil; ld({1jpX,
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/** _tjexS'
* @author treeroot .qYQ3G'V
* @since 2006-2-2 !:esdJH
* @version 1.0 L0=`1q
*/ LLzxCMc9*
public class ImprovedQuickSort implements SortUtil.Sort { UpSJ%%.n
!5[SNr3^
private static int MAX_STACK_SIZE=4096; *M#L)c;6
private static int THRESHOLD=10; 6;!)^b
/* (non-Javadoc) #s>'IPc0
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;0?OBUDO
*/ }1Mf0S
public void sort(int[] data) { d,
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int[] stack=new int[MAX_STACK_SIZE]; # SJJ@SM
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int top=-1; cCx{
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int pivot; ,-(D(J;}1
int pivotIndex,l,r; A yn$,
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stack[++top]=0; {=gJGP/}_
stack[++top]=data.length-1; ./'d^9{
5X5UUdTM
while(top>0){ @y * TVy
int j=stack[top--]; `*kl> }$
int i=stack[top--]; H=Cj/jE
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pivotIndex=(i+j)/2; '<ZHzDW@
pivot=data[pivotIndex]; kou7_4oS
4
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SortUtil.swap(data,pivotIndex,j); ${wp}<u_
&?xmu204
file://partition ug;\`.nT^
l=i-1; ){eQ.yW
r=j; -^7
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do{ Tj<B;f!u
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 7D'D7=Z.
SortUtil.swap(data,l,r); 9O Y ao
} SwO$UqYU=
while(l SortUtil.swap(data,l,r); CS-jDok
SortUtil.swap(data,l,j); DYgB_Iak
uT<<G)v)
if((l-i)>THRESHOLD){ 9^Web~yi#
stack[++top]=i; OqF8KJnO;
stack[++top]=l-1; nr}Ols
} YvP62c \
if((j-l)>THRESHOLD){ Hmx.BBz
stack[++top]=l+1; I=P<RG7j)
stack[++top]=j; &u6n5-!v
} dmLx $8
!yq98I'
} q.@% H}
file://new InsertSort().sort(data); ?(Plb&kR
insertSort(data); O2 + K
} ^si[L52BZ
/** !V/7q'&t=
* @param data 2:nI4S
*/ "f~OC<GdYs
private void insertSort(int[] data) { s6_i>
int temp; z>
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); iAXGf V
} lHTr7uF(
} oZl%0Uy?9I
} 15aPoxo>
?q2Yk/P
} BTG_c_?]e
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归并排序: '(N(k@>{
'<1Cta`
package org.rut.util.algorithm.support; Zp<#( OIu
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import org.rut.util.algorithm.SortUtil; tw\1&*:
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/** W_3BL]^=
* @author treeroot M_r[wYt!
* @since 2006-2-2 )<_qTd0`
* @version 1.0 2*Pk1vrI
*/ u5KAwMw%Q
public class MergeSort implements SortUtil.Sort{ Iij$ce`nx
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/* (non-Javadoc) :7dc;WdM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '}bmDb*
*/ + DE/DR:
public void sort(int[] data) { 8xhx*A
int[] temp=new int[data.length]; H/;AlN|!
mergeSort(data,temp,0,data.length-1); <$25kb R5K
} Xrpvq(]
j*4:4B%
private void mergeSort(int[] data,int[] temp,int l,int r){ 5tLb
o
int mid=(l+r)/2; |Sua4~yL(
if(l==r) return ; 3/]FT#l]i
mergeSort(data,temp,l,mid); y"U)&1 c%
mergeSort(data,temp,mid+1,r); CY[3%7fv
for(int i=l;i<=r;i++){ mh SknyqT
temp=data; 1~LfR
} v*<rNZI
int i1=l; koD}o^U#
int i2=mid+1; u!F\`Gfm_
for(int cur=l;cur<=r;cur++){ r_
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if(i1==mid+1) 734n1-F?I%
data[cur]=temp[i2++]; ]?oJxW.
else if(i2>r) e-\/1N84
data[cur]=temp[i1++]; nXI8 `7D
else if(temp[i1] data[cur]=temp[i1++]; AP1ZIc6
else Z'}%Mkm`i}
data[cur]=temp[i2++]; ozl!vf# kv
} ;vX1U8
}
M}@>h
|k%1mE(+=s
} 5ddfdIp
Ld/6{w4ir
改进后的归并排序: imAOYEH7}
&}pF6eIar
package org.rut.util.algorithm.support; 0G33hIOS
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import org.rut.util.algorithm.SortUtil; WXDo`_{R
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/** LEOa=(mN\
* @author treeroot l+hOD{F4pS
* @since 2006-2-2 pLV
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* @version 1.0 |3Oyg ?2
*/ t imY0fx#
public class ImprovedMergeSort implements SortUtil.Sort { yx:+Xy*N
;Bzx}7A
private static final int THRESHOLD = 10; 7n+,!oJ
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/* d"Wuu1tEY
* (non-Javadoc) -p>1:M <
*
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cg`lQYU
*/ 1\Pjz
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public void sort(int[] data) { u^CL }t*
int[] temp=new int[data.length]; i1m>|[@k
mergeSort(data,temp,0,data.length-1); F[!%,-*
} tm2lxt
gFu,q`Vf*
private void mergeSort(int[] data, int[] temp, int l, int r) { $N;J)
int i, j, k; d%epM5
int mid = (l + r) / 2; YPNW%N!$|
if (l == r) -/0\_zq7
return; e5n]@mu%
if ((mid - l) >= THRESHOLD) <mVFC
mergeSort(data, temp, l, mid); 3
v.8
else V3r)u\ o'
insertSort(data, l, mid - l + 1); 84WcaH
if ((r - mid) > THRESHOLD) 6-)WXJ@V
mergeSort(data, temp, mid + 1, r); TJZ~Rpq
else ]*lZFP~
insertSort(data, mid + 1, r - mid); Fu5Y<*x
T]zD+/=
for (i = l; i <= mid; i++) { mU?~s7
temp = data; uozq^sy
} 7DoU7I\u
for (j = 1; j <= r - mid; j++) { |0}7/^
temp[r - j + 1] = data[j + mid]; WVOj;c
} %iEdU V\$
int a = temp[l]; NqNU:_}
int b = temp[r]; ~1twGG_;
for (i = l, j = r, k = l; k <= r; k++) { }HmkTk
if (a < b) { k`|E&+og
data[k] = temp[i++]; '<uM\v^k
a = temp; o|c6=77043
} else { vf+z0df
data[k] = temp[j--]; Hs:zfvD
b = temp[j]; jX(${j<
} A|:+c*7]
} vq+CW?*"
} o9]32l
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/** r `n|fD.
* @param data {#4a}:3
* @param l 0R[fH
* @param i XBkaum4j
*/ [6JDS;MIN
private void insertSort(int[] data, int start, int len) { 7
@}`1>97
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); q9j~|GE|
} eB1NM<V
} D M+MBK
} I9>vm]
} &0%Zb~ts
5p S$rf
堆排序: J@E]Fl
>3KlI
package org.rut.util.algorithm.support; fHEIys,{
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import org.rut.util.algorithm.SortUtil; "c]9Q%
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/** rr1'|
k"
* @author treeroot .KC V|x;QW
* @since 2006-2-2 ^L)3O|6c
* @version 1.0 .!Z5A9^
*/ FA)ot)]
public class HeapSort implements SortUtil.Sort{ a3\~AO H%
,IqE<i!U
/* (non-Javadoc) !&g_hmnIF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &oB*gGRw=7
*/ xR&:]M[Vg
public void sort(int[] data) { 26nwUNak
MaxHeap h=new MaxHeap(); N0kCdJv
h.init(data); vo\'ycPv
for(int i=0;i h.remove(); 9< 07# 8c.
System.arraycopy(h.queue,1,data,0,data.length); e@0|fB%2
} knG:6tQ
O TlqJ
private static class MaxHeap{ F1- "yX1B
7z1@XO<D
void init(int[] data){ LmqSxHs0Q
this.queue=new int[data.length+1]; 'h'pM#D
for(int i=0;i queue[++size]=data; hp(MKfh H
fixUp(size); Y<VX.S2kf
} eaDZ^Z
Er
} D})/2O p
#-G@ p
private int size=0; Ot`%5<E^
fx(8 o+
private int[] queue; #<9'{i3
uj.$GAtO)
public int get() { $p0D9mF
return queue[1]; r/a@ x9
} gL&w:_
{ >[ ]iX
public void remove() { V61oK
SortUtil.swap(queue,1,size--); .[]S!@+%
fixDown(1); P[q>;Fx*
} %#v$d
file://fixdown JvW7h(u7g
private void fixDown(int k) { ~(XaXu
int j; \EoE/2"<
while ((j = k << 1) <= size) { V'W*'wo
if (j < size %26amp;%26amp; queue[j] j++; ro<w8V9.a
if (queue[k]>queue[j]) file://不用交换 p.g> +7
break; IO"P /Q
SortUtil.swap(queue,j,k); ciml:"nQ
k = j; wdBBx\FP
} 2ns,q0I
A
} <@ ts[p.
private void fixUp(int k) { l:eC+[_;>
while (k > 1) { ~zac.:a8
int j = k >> 1; i*mU<:t
if (queue[j]>queue[k]) _[-MyU s
break; =lk'[P/p`
SortUtil.swap(queue,j,k); $A{$$8P
k = j; >"<s7$g
} w/(T
} UV}:3c6 ZX
:M{
)&{D
} HP[B%
4vG-d)"M2
} O4oN)
'R+^+urq^
SortUtil: VpHwc!APq
DGCvH)Q
package org.rut.util.algorithm; b' M"To@
lrKT?siB
import org.rut.util.algorithm.support.BubbleSort; ;0oL*d[1Z
import org.rut.util.algorithm.support.HeapSort; |&WYu,QQ4
import org.rut.util.algorithm.support.ImprovedMergeSort; O]hUOc`k
import org.rut.util.algorithm.support.ImprovedQuickSort; H#hpaP;
import org.rut.util.algorithm.support.InsertSort; Hkia&nz'3
import org.rut.util.algorithm.support.MergeSort; UF5_be,D
import org.rut.util.algorithm.support.QuickSort; 5p!{#r6m
import org.rut.util.algorithm.support.SelectionSort; NwYQ6VEA
import org.rut.util.algorithm.support.ShellSort; DeF`#a0E
Mpw]dYM
/** WK*tXc_[b
* @author treeroot Y1sK sdV
* @since 2006-2-2 ,#,K_oz
* @version 1.0 ?87\_wL/j
*/ Vfy@?x=
&
public class SortUtil { p7`9
d1n
public final static int INSERT = 1; _/>I-\xWA
public final static int BUBBLE = 2; &0Y
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public final static int SELECTION = 3; a-,*iK{_u
public final static int SHELL = 4; -YQS\@?
public final static int QUICK = 5; !=.y[Db=
public final static int IMPROVED_QUICK = 6; eza"<uBr
public final static int MERGE = 7; CStNCBZ|\
public final static int IMPROVED_MERGE = 8; vmkiw1
public final static int HEAP = 9; 1=IOio4U
HiK+}?I
public static void sort(int[] data) { 2oahQ:
}B
sort(data, IMPROVED_QUICK); Gd\/n*j
} db1ZNw
private static String[] name={ m ne)c[Qn
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ivl %%nY'
}; $04lL/;
A#I&&qZ
private static Sort[] impl=new Sort[]{ ^C^I
new InsertSort(), |/l] ]+
new BubbleSort(), By7lSbj
new SelectionSort(), p.(+L^-=
new ShellSort(), (oy@j{G)c6
new QuickSort(), ojBdUG\
new ImprovedQuickSort(), i.On{nB"k
new MergeSort(), 2&:z[d}~H
new ImprovedMergeSort(), )3e_Hs+
new HeapSort() oupWzjo
}; ;rL1[qwk
ceks~[rP
public static String toString(int algorithm){ `g1?Q4h
return name[algorithm-1]; xV14Y9
} jMI30
{RI^zNgs[
public static void sort(int[] data, int algorithm) { -;"A\2_y
impl[algorithm-1].sort(data); N@<-R<s^
} ;2g.X(Ra
Il@K8?H@
public static interface Sort { >ZPu$=[W
public void sort(int[] data); [Nm?qY
} 4x+[?fw
Q/Z>w+zh#
public static void swap(int[] data, int i, int j) { Zi}h\R a
int temp = data; AtHkz|sl
data = data[j]; R|qNyNXo[
data[j] = temp; TeZu*c
} h2mHbe43
} \oxf_4X