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。 3S <5s}
插入排序: ?(R6}ab>K7
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package org.rut.util.algorithm.support; mD0pqK
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import org.rut.util.algorithm.SortUtil; h#`qEK&u
/** f PDnkr
* @author treeroot ~j8x"
* @since 2006-2-2 _#-(XQ a
* @version 1.0 ))k^7g9M`
*/ Dj %jrtT
public class InsertSort implements SortUtil.Sort{ dIK!xOStA
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/* (non-Javadoc) GJH6b7I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >Y[{m $-
*/ ZpWG
public void sort(int[] data) { Eb#0-I
int temp; {)-%u8J\`N
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); fxyPh
} i12iB+q
} ;O.U-s
} Z*kg= hs^
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} YK_a37E{F
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冒泡排序: -3bl!9h^
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package org.rut.util.algorithm.support; V!~uGf
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import org.rut.util.algorithm.SortUtil; /FB '
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/** )eUb@Eu
* @author treeroot xe%+Yb]
* @since 2006-2-2 U3p=H^MB.
* @version 1.0 L2Mcs
*/ 8=<d2u'
public class BubbleSort implements SortUtil.Sort{ 0oM~e
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/* (non-Javadoc) dG6Mo76
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m&o&XVC
*/ MiS$Y
public void sort(int[] data) { 'w!Hjq]$
int temp; *I>1O*
for(int i=0;i for(int j=data.length-1;j>i;j--){ !U*i13
if(data[j] SortUtil.swap(data,j,j-1); 5\qoZs*e
} '{Iv?gh"
} QT?fp
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} 1Te:&d
} ,mjwQ6:Ny
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} JCS$Tm6y<_
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选择排序: pbju;h)O!|
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package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; `O0v2?/f0
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/** ])T*T$u
* @author treeroot :DQHb"(
* @since 2006-2-2 [T !#s
* @version 1.0 EPdR-dC^wE
*/ /GfC/)1_
public class SelectionSort implements SortUtil.Sort { 4l>/6LNMF
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/* O`~T:N|D
* (non-Javadoc) wnhac}
* \q%li)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cfpP?
*/ d-39G*;1
public void sort(int[] data) { c7P"1
int temp; zj"J~s;?
for (int i = 0; i < data.length; i++) { 9C3q4.$D
int lowIndex = i; R\1#)3e0
for (int j = data.length - 1; j > i; j--) { 9LzQp`In
if (data[j] < data[lowIndex]) { :] {+3A
lowIndex = j; gb8nST$r
} ysDfp'C,
} uu]<R@!J
SortUtil.swap(data,i,lowIndex); xHe<TwkI
} LW0't}
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} 4vGkgH<,
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} CzST~*lH
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Shell排序: *W%HTt"N
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package org.rut.util.algorithm.support; jA<v<oV
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import org.rut.util.algorithm.SortUtil; :v8j3=
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/** r9z/hm}E
* @author treeroot Y(W>([59
* @since 2006-2-2 Xn9TQ"[4
* @version 1.0
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*/ 7*~
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public class ShellSort implements SortUtil.Sort{ 97NF*-)N
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/* (non-Javadoc) ub0]nov
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #&5m=q$EI
*/ (X QgOR#
public void sort(int[] data) { =H3 JRRS
for(int i=data.length/2;i>2;i/=2){ ,]42v?
for(int j=0;j insertSort(data,j,i); D8C@x`
} srO{Ci0
} KP -g<Zc
insertSort(data,0,1); h 5t,5e}
} T/dchWG
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/** %AXa(C\1
* @param data i~ PN(h
* @param j j'#W)dp(
* @param i w*u HB;?
*/ [%
KBc}
private void insertSort(int[] data, int start, int inc) { q --NLm@;
int temp; 2.Th29]
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); bJmVq%>;
} w91{''sK
} [XhuJdr"u
} 6 80i?=z
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} &d[&8V5S
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快速排序: /}]X3ng
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package org.rut.util.algorithm.support; K%1'zSAyK
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import org.rut.util.algorithm.SortUtil; %j^[%&pT
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/** GL(R9Y
* @author treeroot (|Y[5O)
* @since 2006-2-2 (S&X??jfB5
* @version 1.0 ~^UQw?;
*/ pMHY2t
public class QuickSort implements SortUtil.Sort{ Xv|~1v%s7
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/* (non-Javadoc) ahU\(=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K!lGo3n]
*/ /NNe/7'l
public void sort(int[] data) { &D\~-fOGb
quickSort(data,0,data.length-1); =.#*MYB.l
} V)^nVD)e
private void quickSort(int[] data,int i,int j){ LBk1Qw}-
int pivotIndex=(i+j)/2; P`v%<
9~
file://swap .\7R/cP}{A
SortUtil.swap(data,pivotIndex,j); >}\!'3)_
^D/:[
int k=partition(data,i-1,j,data[j]); l
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SortUtil.swap(data,k,j); uZ&,tH/
if((k-i)>1) quickSort(data,i,k-1); _8)9I?jH
if((j-k)>1) quickSort(data,k+1,j); ,ic.b
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} 9?:SxI;v
/** w4<RV:Vmt
* @param data x\)0+c~\}x
* @param i \(R(S!xr_
* @param j ?{mFQ
* @return \SkCsE#H
*/ -5l74f!i
private int partition(int[] data, int l, int r,int pivot) { 79AOvh
do{ wLAGe'GX
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); {n2mh%I
SortUtil.swap(data,l,r); iEux`CcJ.
} I
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while(l SortUtil.swap(data,l,r); #qi@I;;t
return l; MM"{ehd{^a
} yk5-@qo
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} MR=>DcR
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改进后的快速排序: $&M"Ji
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package org.rut.util.algorithm.support; r in#lu&N
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import org.rut.util.algorithm.SortUtil; `PnB<rf:*1
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/** |XzqP +t
* @author treeroot }A'QXtI/G
* @since 2006-2-2 y+\nj3v6
* @version 1.0 'oBT*aL
*/ DJr{;t$7~
public class ImprovedQuickSort implements SortUtil.Sort { $/ew'h9q
+]*4!4MK6
private static int MAX_STACK_SIZE=4096; 'Pk (
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private static int THRESHOLD=10; UbE*x2N
/* (non-Javadoc) yf(VwU,
x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZP61T*n
*/ \b?z\bC56
public void sort(int[] data) { $rD&rsx6
int[] stack=new int[MAX_STACK_SIZE]; YQxVeS(
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int top=-1; -bdF=
int pivot;
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int pivotIndex,l,r; 6":=p:PT.
);$_|]#
stack[++top]=0; k)oD
stack[++top]=data.length-1; JL45!+
# kl?ww U
while(top>0){ ~]a:9Ev*
int j=stack[top--]; ,d'x]&a
int i=stack[top--]; C
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pivotIndex=(i+j)/2; d#cw`h<c~
pivot=data[pivotIndex]; )<-\ F%&b
+K,]#$k
SortUtil.swap(data,pivotIndex,j); %b<cJ]F
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file://partition Ytop=ZIl'
l=i-1; 422d4Zu
r=j; `?{i dg
do{ xhLVLXZ9
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ,rx?Ig}kz
SortUtil.swap(data,l,r); ZG+8kt!w
} ?(UeWLC#
while(l SortUtil.swap(data,l,r); a[bu{Z]%
SortUtil.swap(data,l,j); {0
d/;
//S/pCqED
if((l-i)>THRESHOLD){ :t+XW`eQR:
stack[++top]=i; p3>p1tC
stack[++top]=l-1; o5)lTVQ~~
} U<QO@5
if((j-l)>THRESHOLD){ PRcW}"m]Qg
stack[++top]=l+1; J24<X9b
stack[++top]=j; Li)rs<IX;m
} "u:5
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} YMx]i,u'+
file://new InsertSort().sort(data); HfEU[p7)
insertSort(data); \7o&'zEw
} xsn2Qn/P
/** ;5QdT{$H
* @param data xwoK#eC~F
*/ p(o"K@I
private void insertSort(int[] data) { T9N][5 \
int temp; g.$a]pZz
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); f*U3s N^y
}
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} 5'>DvCp%M
} +Q pgG4h
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} }}L :6^
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归并排序: 6jz6
6 z(7l
package org.rut.util.algorithm.support; G+&ug`0]5
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import org.rut.util.algorithm.SortUtil; u*LMpTnn
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/** gD`|N@W$5
* @author treeroot p,#t[K
* @since 2006-2-2 +P YX.
* @version 1.0 g{0a]'ph
*/ .=@xTJh
public class MergeSort implements SortUtil.Sort{ tbMf_-g
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/* (non-Javadoc) .yK~FzLs
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I|&<!{Rq
*/ YQ/
public void sort(int[] data) { mk*r^k`a
int[] temp=new int[data.length]; o%Ubn*
mergeSort(data,temp,0,data.length-1); `b.KMOn
} $=&a0O#
ppL*#/jYt
private void mergeSort(int[] data,int[] temp,int l,int r){ ob= ](
int mid=(l+r)/2; J)7m::%I
if(l==r) return ; UYOveQ;
mergeSort(data,temp,l,mid); Bgw=((p
mergeSort(data,temp,mid+1,r); -;T!d
for(int i=l;i<=r;i++){ ITpo:"X g
temp=data; H{ yUKZH*
} P D,s,A
int i1=l; LTsX{z
int i2=mid+1; v/ $~ifY"
for(int cur=l;cur<=r;cur++){ yE+Wb[H[
if(i1==mid+1) 2H\}N^;f
data[cur]=temp[i2++]; pf&H !-M
else if(i2>r) al#BfcZW
data[cur]=temp[i1++]; barY13)$U
else if(temp[i1] data[cur]=temp[i1++]; wAt|'wP
:
else GhlbYa
data[cur]=temp[i2++]; 'c]Fhe fb
} 5B:%##Ug5
} VPC7Dh%.
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} LpV2XL$p>#
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改进后的归并排序: u4eA++eT
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package org.rut.util.algorithm.support; )s-[d_g
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import org.rut.util.algorithm.SortUtil; FGRdA^`
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/** p+.xye U(
* @author treeroot e9\eh? bPU
* @since 2006-2-2 T<a/GE/
* @version 1.0 J]AkWEiCJ
*/ *#y9 Pve
public class ImprovedMergeSort implements SortUtil.Sort { a62'\wF>D
)(/Bw&$
private static final int THRESHOLD = 10; /s~(? =qYH
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/* ~DL-@*&
* (non-Javadoc) ?S8_x]E
* \Bvy~UeE)>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vB?(|
*/ 7;8DKY q
public void sort(int[] data) { [<nmJ-V
int[] temp=new int[data.length]; .wpp)M.w;H
mergeSort(data,temp,0,data.length-1); n1Z*wMwC
} Efa3{
7>{
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private void mergeSort(int[] data, int[] temp, int l, int r) { 4 (>8tP\Y
int i, j, k; F?c:
).g
int mid = (l + r) / 2; Tfytc$aQ
if (l == r) c,,(s{1
return; p=T6Ix'_2e
if ((mid - l) >= THRESHOLD) F2^qf
mergeSort(data, temp, l, mid); e~1$x`DH
else Ib}~Q@?2
insertSort(data, l, mid - l + 1); 1nZ7xCDK98
if ((r - mid) > THRESHOLD) Qd"R@+i
mergeSort(data, temp, mid + 1, r); cx_$`H
else {P7 I<^,
insertSort(data, mid + 1, r - mid); @xkI?vK6
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for (i = l; i <= mid; i++) { U|jip1\
temp = data; ] vQU(@+I
} G0mvrc-(
for (j = 1; j <= r - mid; j++) { y**>l{!!
temp[r - j + 1] = data[j + mid]; krSOS WJ
} [ApAd
int a = temp[l]; rx\f:-3g
int b = temp[r]; NGp^/PZX0
for (i = l, j = r, k = l; k <= r; k++) { s $?u'}G3
if (a < b) { k%K\~U8"
data[k] = temp[i++]; 6xW17P
a = temp; @"vTz8oY@
} else { a
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data[k] = temp[j--]; z#Cgd-^7.#
b = temp[j]; 'iikcf*)C
} [E:-$R
} M1,1J-h
} "o>` Y
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/** FV>xAU$
* @param data Lv<)Dur0K
* @param l r.10b]b
* @param i <,+6:NmT
*/ $E35W=~)
private void insertSort(int[] data, int start, int len) { ^!x}e+ o
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Q^|aix~ K
} )A*Sl2ew
} k}908%w
} 1g1gu=|Q
} :qxd
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堆排序: ghVxcK
L~} 2&w
package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; DOGg=`XK1
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/** QAK.Qk?Qu
* @author treeroot VsR`y]"g
* @since 2006-2-2 iT"H%{+~
* @version 1.0 WgC*bp{
*/ #zv'N
public class HeapSort implements SortUtil.Sort{ MESPfS+
^p !4`S
/* (non-Javadoc) m8ydX6~max
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]Zz<9zix
*/ 26\*x
public void sort(int[] data) { S&m5]h!D
MaxHeap h=new MaxHeap(); 9,;+B8-A
h.init(data); )#n>))
for(int i=0;i h.remove(); ^Wz3 q-^
System.arraycopy(h.queue,1,data,0,data.length); jw!QjVuRN%
} r]vD]
m%?b"kxL[
private static class MaxHeap{ *>XY' -;2e
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void init(int[] data){ e`Z3{H}
this.queue=new int[data.length+1]; aE2
3[So
for(int i=0;i queue[++size]=data; 4c_F>Jw[
fixUp(size); 4)3!n*I
} "@[xo7T
}
K{00 V#
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private int size=0; 9/k?Lv
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>:G6K
private int[] queue; Px4zI9;cB
E4'D4@\W
public int get() { B&m?3w
return queue[1]; wzMWuA4vX
} n~d`PGs?f
dMwVgc:
public void remove() { `<>8tZS9"
SortUtil.swap(queue,1,size--); Y4Z?`TL
fixDown(1); vN7ihe[C
} 7,e=|%7.
file://fixdown .6E7 R
private void fixDown(int k) { #U&G$E`7
int j; NG_O I*|~
while ((j = k << 1) <= size) { ZH%[wQ~4
if (j < size %26amp;%26amp; queue[j] j++; cuR|cUK
if (queue[k]>queue[j]) file://不用交换 U<r<$K
break; Y#6@0Nn[G
SortUtil.swap(queue,j,k); ;<q@>p[
k = j; .#h]_%
} ;:9 x.IkxC
} `>8|
private void fixUp(int k) { kozg8 `\]
while (k > 1) { [-$&pB>w8'
int j = k >> 1; =QyO$:t
if (queue[j]>queue[k]) F;ONo.v;
break; N"t,6tH
SortUtil.swap(queue,j,k); )hQNIt3o_
k = j; Y=3Y~
} {=g-zsc]K
} 8d)F#
fJE ki>1
} V7401@F
A{6ZEQAh>
} Gcs+@7!b
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SortUtil: 82)d.>
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package org.rut.util.algorithm; Z=F=@ <!
6!"15dPN
import org.rut.util.algorithm.support.BubbleSort; Z@ws,f^e
import org.rut.util.algorithm.support.HeapSort; i^IvT
import org.rut.util.algorithm.support.ImprovedMergeSort; QHs]~Ja
import org.rut.util.algorithm.support.ImprovedQuickSort; %?wuKZLnc
import org.rut.util.algorithm.support.InsertSort; `P z !H
import org.rut.util.algorithm.support.MergeSort; XPEjMm'*b3
import org.rut.util.algorithm.support.QuickSort; |\_O8=B%
import org.rut.util.algorithm.support.SelectionSort; zIo))L
import org.rut.util.algorithm.support.ShellSort; D\`$
u%h<5WNh<
/** v%FVz
* @author treeroot J5o"JRJ"
* @since 2006-2-2 _&z>Id`w
* @version 1.0 W"Rii]GK"
*/ nu3 A'E`'k
public class SortUtil { ~0}eNz*
public final static int INSERT = 1; ZbGyl}8ua
public final static int BUBBLE = 2; LTY.i3
public final static int SELECTION = 3; x9ws@=[:
public final static int SHELL = 4; wk/->Rz
public final static int QUICK = 5; xxiLi46/
public final static int IMPROVED_QUICK = 6; e!-'O0-Kw
public final static int MERGE = 7; |-|BM'Y
public final static int IMPROVED_MERGE = 8; VC+\RB#:-
public final static int HEAP = 9; S;c=6@"
W[?B@ sdSZ
public static void sort(int[] data) { Qpc{7#bp
sort(data, IMPROVED_QUICK); ;PHnv5 x@f
} -?(RoWv@X&
private static String[] name={ Qm-P& g-
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 'I P!)DS
}; |}}]&:w2
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