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。 2c<&eX8"
插入排序: w.Ezg j
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package org.rut.util.algorithm.support; <1w/hy&mWN
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import org.rut.util.algorithm.SortUtil; eZ a:o1y
/**
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* @author treeroot W$dn_9W
* @since 2006-2-2 v]2S`ffP
* @version 1.0 q,<[hBri-
*/ O#nR>1h
public class InsertSort implements SortUtil.Sort{ E}CiQUx
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/* (non-Javadoc) kH*P n'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3`hUo5K
*/ >idBS
public void sort(int[] data) { aYL|@R5;e
int temp; KDi|(
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); u^I(Ny
} RO\gax
} R8*Q$rH<
} ]"AyAkT(
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} <0|9Tn2O
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冒泡排序: D/(L
RVtQ20e";r
package org.rut.util.algorithm.support; -@^Zq}
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import org.rut.util.algorithm.SortUtil; mtic>
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/** t<uYM
* @author treeroot M|T4~Q U&
* @since 2006-2-2 "_L?2ta
* @version 1.0 #LcrI
*/ DG(7|`(aY
public class BubbleSort implements SortUtil.Sort{ 0uVv<Q~
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/* (non-Javadoc) hlvt$Jwq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3zuF{Q2P<
*/ tc_f;S`k
public void sort(int[] data) { 9L%I<5i
int temp; 'f8(#n=6qP
for(int i=0;i for(int j=data.length-1;j>i;j--){ >YW\~T
if(data[j] SortUtil.swap(data,j,j-1); Auy".br'
} y;"
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} 7>o.0
} s*M@%_A?
} 9D@$i<D:
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} -9P2`XQ^
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选择排序: sfp,Lq`
9z
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package org.rut.util.algorithm.support; [{[N( g&d
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import org.rut.util.algorithm.SortUtil; i< (s}wg
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/** {hSGv
* @author treeroot nR
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* @since 2006-2-2 )!9Ifk0KH
* @version 1.0 >(9F
*/ dtM[E`PL
public class SelectionSort implements SortUtil.Sort { NQTnhiM7$
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/* ]>##`X
* (non-Javadoc)
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* h4&;?T S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;'T{li2
*/ v|Jlf$>
public void sort(int[] data) { !Gs} tiMH
int temp; 4z7G2
for (int i = 0; i < data.length; i++) { A )nW
int lowIndex = i; R U"/2i
for (int j = data.length - 1; j > i; j--) { PsjbR
if (data[j] < data[lowIndex]) { ]*"s\ix
lowIndex = j; +\`vq"e
} W@L3+4
} 6@;ha=[+
SortUtil.swap(data,i,lowIndex); TDK@)mP
} 1ZJ4*b n
} ]rd/;kg.S
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} _cJ[
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Shell排序: ,a|@d}U
hp!d/X=J_
package org.rut.util.algorithm.support; <T,A&`/
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import org.rut.util.algorithm.SortUtil; :bM+&EP
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/** u.|~
* @author treeroot C.a5RF0
* @since 2006-2-2 TT!ET<ciN
* @version 1.0 Hy;Hs#
*/ Y8s;w!/
public class ShellSort implements SortUtil.Sort{ 7l8[xV
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/* (non-Javadoc) ;Kxbg>U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OTvROJP
*/ $j`
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public void sort(int[] data) { %(m])
for(int i=data.length/2;i>2;i/=2){ I d8wS!W`7
for(int j=0;j insertSort(data,j,i); Os),;W0w4
} V}8$p8#<@
} #m. AN
insertSort(data,0,1); eBB:~,C^q.
} :1fagaPg
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/** }F1s
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* @param data wJ"ev.A)
* @param j }Ag|gF!_
* @param i AMlV%U#
*/ 1IH[g*f
private void insertSort(int[] data, int start, int inc) { uF(k[[qaiN
int temp; /9ZcM]X B
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 9G+f/k,P
} 64ox jF)
} ,cHU) j
} 'UwI*EW2S
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} Rc$h{0K8
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快速排序: \^532 FIw6
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package org.rut.util.algorithm.support; t\y-T$\\
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import org.rut.util.algorithm.SortUtil; S)\8|ym6!
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/** <bmLy_":
* @author treeroot hq_~^/v\
* @since 2006-2-2 )@7DsV/M
* @version 1.0 Ub)I66
*/ ksI>IW
public class QuickSort implements SortUtil.Sort{ 4 rB8Nm1
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/* (non-Javadoc) +cg
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aO1IVESr$
*/ sOC&Q&eg
public void sort(int[] data) { q^Tis>*u6
quickSort(data,0,data.length-1); -WR}m6yMr
} Lyoor1
private void quickSort(int[] data,int i,int j){ QXQ
int pivotIndex=(i+j)/2; 3;/?q
file://swap
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SortUtil.swap(data,pivotIndex,j); pG yRX_;
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int k=partition(data,i-1,j,data[j]); 7 ^I:=qc72
SortUtil.swap(data,k,j); ey1Z/|
if((k-i)>1) quickSort(data,i,k-1); 2_pz3<,\
if((j-k)>1) quickSort(data,k+1,j); %`\]Y']R
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} %xg"Q|
/** V/y=6wUiSl
* @param data 9{eBgdC
* @param i [8]m8=n
* @param j X ,
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* @return xPQL?.
*/ R{3CW^1
private int partition(int[] data, int l, int r,int pivot) { bEpMaBN
do{ J/Q|uRpmqr
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 9N
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SortUtil.swap(data,l,r); l]5%
} F$Pp]"82'm
while(l SortUtil.swap(data,l,r); K3ukYR
return l; HHS45kg[c
} K5flit4-
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} ~mH+DV3
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改进后的快速排序: XVUf,N,
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package org.rut.util.algorithm.support; J?jeYW
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import org.rut.util.algorithm.SortUtil; o/JPYBhdl
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/** |9s wZ[
* @author treeroot &'O?es|Lb
* @since 2006-2-2 I'IB_YRL4
* @version 1.0 !<Z{@7oH
*/ <-)9>c:k
public class ImprovedQuickSort implements SortUtil.Sort { :kp0EiJ
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private static int MAX_STACK_SIZE=4096; T
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private static int THRESHOLD=10; 0xBY(#;Q
/* (non-Javadoc) 2LhE]O(_"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QkX@QQT?
*/ h)o]TV
public void sort(int[] data) { u2lmwE
int[] stack=new int[MAX_STACK_SIZE]; 37>MJ
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int top=-1; wo(j}O-
int pivot; +89o`u_l%
int pivotIndex,l,r; !#.vyBK#
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stack[++top]=0; 1URsHV!xcM
stack[++top]=data.length-1; M[,^KJ!
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while(top>0){ FOp_[rR
int j=stack[top--]; g{a d0.y,
int i=stack[top--]; {Gkn_h-^
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pivotIndex=(i+j)/2; |Ow$n
pivot=data[pivotIndex]; 7SHo%bA
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SortUtil.swap(data,pivotIndex,j); r,nn~
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file://partition Qa?QbHc
l=i-1; Mcb<[~m
r=j; \>[gl!B_Rr
do{ ):E'`ZP!F
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); $K=z
SortUtil.swap(data,l,r); 6DZ2pT:
} a}D&$yz2
while(l SortUtil.swap(data,l,r); ro]L}oE+
SortUtil.swap(data,l,j); APuu_!ez1
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if((l-i)>THRESHOLD){ s=j O;K$
stack[++top]=i; `w=!o.1
stack[++top]=l-1; p;ZDpR
} f[M"EMy
if((j-l)>THRESHOLD){ 2$Y3[$
stack[++top]=l+1; %0(>!SY
stack[++top]=j; )fR1n}#
} UJs?9]x>
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} YD+QX@
file://new InsertSort().sort(data); qq>44 k\|)
insertSort(data); Y;PDZbK3
} 5oa]dco
/** }'_ :XKLj
* @param data -(ER4#
*/ h=mv9=x
private void insertSort(int[] data) { % NwoU%q
int temp; Ug`
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); s @3zx
} Nuo<` 6mV@
} Es,0'\m&
} 7x:F!0:
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} 6KBHRt
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归并排序: @%7/2k
X)FQ%(H<
package org.rut.util.algorithm.support; {&b-}f"m
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import org.rut.util.algorithm.SortUtil; 7dx4~dF
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/** 6P6Jx;
* @author treeroot k dUc&
* @since 2006-2-2 /3;=xZq
* @version 1.0 'jwTGT5x
*/ F6h/0i
public class MergeSort implements SortUtil.Sort{ -y<rM0"NE
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/* (non-Javadoc) q .)^B@}_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -hm9sNox
*/ 6UtG-WHHt
public void sort(int[] data) { l9,w>]s
int[] temp=new int[data.length]; f(W,m
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mergeSort(data,temp,0,data.length-1); &<OMGGQ[h
} J]_)gb'1BR
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private void mergeSort(int[] data,int[] temp,int l,int r){ T)*l' g'
int mid=(l+r)/2; Z 'Zd[."s
if(l==r) return ; !FO:^P
mergeSort(data,temp,l,mid); l$qmn$Uc
mergeSort(data,temp,mid+1,r); HKT{IP+7(L
for(int i=l;i<=r;i++){ (rMTW+,
temp=data; R7y-#?
} `jt(DKB+J
int i1=l; zh?xIpY
int i2=mid+1; o<Ke3?J\
for(int cur=l;cur<=r;cur++){ m}sh I8S
if(i1==mid+1) +._f.BRmX.
data[cur]=temp[i2++]; _qdWQFuM
else if(i2>r) ^O?l9(=/u
data[cur]=temp[i1++]; Z7ZWf'o
else if(temp[i1] data[cur]=temp[i1++]; yzODF>KJ
else :
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data[cur]=temp[i2++]; qrOB_Nz
} ([E#zrz%
} ',<{X(#(
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} A89Y;_4y
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改进后的归并排序: 1"N/ZKF-x
oTZo[T@zRx
package org.rut.util.algorithm.support; hlt9x.e.A
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import org.rut.util.algorithm.SortUtil; BD<rQ mfA^
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/** GXGN;,7EV
* @author treeroot dICnB:SSB
* @since 2006-2-2 :ga 9Db9P
* @version 1.0 9iiU,}M`j
*/ 8Fyc#Xo8
public class ImprovedMergeSort implements SortUtil.Sort { |v,}%UN2
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private static final int THRESHOLD = 10; 99=[>Ck)G
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/* kjQIagw
* (non-Javadoc) })Ix.!p
* eU<]h>2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w/)e2CH
*/ 2*b#+ b
public void sort(int[] data) { !^rITiy
int[] temp=new int[data.length]; sf=%l10Fk#
mergeSort(data,temp,0,data.length-1); .CB"@.7
} LD7? .
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private void mergeSort(int[] data, int[] temp, int l, int r) { -sruxF
int i, j, k; _S[Rvb1e
int mid = (l + r) / 2; +^o3}`
if (l == r) 50O7=
return; +sV# Z,
if ((mid - l) >= THRESHOLD) 4'7
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mergeSort(data, temp, l, mid); #w[q.+A
else 7cJO)cm0'
insertSort(data, l, mid - l + 1); C"V?yDy2~
if ((r - mid) > THRESHOLD) X}ey0)g%
mergeSort(data, temp, mid + 1, r); loAfFK>g
else (dw3'W
insertSort(data, mid + 1, r - mid); OoA5!HEh
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for (i = l; i <= mid; i++) { 5G
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temp = data; t\E-6u
} Iltg0`
for (j = 1; j <= r - mid; j++) { F5om-tzy
temp[r - j + 1] = data[j + mid]; 4 @ydK
} rZwf%}
int a = temp[l]; 4rGO8R
int b = temp[r]; 4OB~h]Vc
for (i = l, j = r, k = l; k <= r; k++) { y"%iD`{
if (a < b) {
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data[k] = temp[i++]; Z:r$;`K/
a = temp; oqQ? 2k<@
} else { 3<Pyr-z h
data[k] = temp[j--]; bRY4yT
b = temp[j]; ^+Y-=2u:
} Eusf gU:
} ),W(TL
}
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/** d[qEP6B
* @param data %s&E-*X
* @param l &,6y(-
* @param i t8a@L(J$
*/ %^)Ja EUC
private void insertSort(int[] data, int start, int len) { nOL 25 Y:
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); fTi{oY,zTg
} OGD8QD
} Y ~\`0?ST
}
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} V"D<)VVA
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堆排序: ?Pok-90
_sCJ3ZJ
package org.rut.util.algorithm.support; Wtzj;GJj
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import org.rut.util.algorithm.SortUtil; #xJGuYdv
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/** 8 MACbLY
* @author treeroot CzDR% v x
* @since 2006-2-2 V+@%(x@D_
* @version 1.0 6=`m
*/ kxKnmB#m-
public class HeapSort implements SortUtil.Sort{ 3T.M?UG>
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/* (non-Javadoc) AD4L`0D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6@Z'fT4
*/ OKLggim{
public void sort(int[] data) { j@_) F^12
MaxHeap h=new MaxHeap(); W;)FNP|MT
h.init(data); E]U3O>hf
for(int i=0;i h.remove(); r>:7${pF
System.arraycopy(h.queue,1,data,0,data.length); M&BM,~
} ~jCpL@rS
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private static class MaxHeap{ 6XxG1]84
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void init(int[] data){ .]sIoB-54
this.queue=new int[data.length+1]; \i;~~;D
for(int i=0;i queue[++size]=data; E[htB><
fixUp(size); %?9r (&
} R4rm>zisVX
} O|7{%5h
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private int size=0; &4Iqm(
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private int[] queue; h/+I-],RF
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public int get() { Cx3m\
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return queue[1]; YO!7D5rV #
} ^TCJh^4na
j[=_1~u}
public void remove() { y:6'&`L
SortUtil.swap(queue,1,size--); _)Z7Le:f!
fixDown(1); 1b]PCNz
} qer'V
file://fixdown .0*CT:1=0
private void fixDown(int k) { GPqB\bxb'
int j; :,z3:PL
while ((j = k << 1) <= size) { {uQ)p=
if (j < size %26amp;%26amp; queue[j] j++; _I}L$
if (queue[k]>queue[j]) file://不用交换 gBiQIhz
break; r(2'0JQ
SortUtil.swap(queue,j,k); [#*?uu+
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k = j; V1fvQ=9
} ?e|:6a+[f
} '?>O
private void fixUp(int k) { LU IT=+
while (k > 1) { R&|)y:bg|
int j = k >> 1; u$@I/q,ou
if (queue[j]>queue[k]) g!)LhE
break; Kac j
SortUtil.swap(queue,j,k); kpreTeA]
k = j; `6/Yf@b
} SUi1*S
} wj:3
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} 3L%r_N*a
FC-*?
} po$ynp756
4l!Yop0h
SortUtil: ![D,8]GD
LsD9hb7
package org.rut.util.algorithm; ]!J3?G
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import org.rut.util.algorithm.support.BubbleSort; ~TK^aM
import org.rut.util.algorithm.support.HeapSort; l:Xf(TLa
import org.rut.util.algorithm.support.ImprovedMergeSort; <Ibr.L]
import org.rut.util.algorithm.support.ImprovedQuickSort; ht)*Ync
import org.rut.util.algorithm.support.InsertSort; ~aR='\<