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。 Nb(se*Y#
插入排序: )lH?XpfTjm
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package org.rut.util.algorithm.support; 6n;ew l}
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import org.rut.util.algorithm.SortUtil; Ntg#-_]
/** Lf7iOW9U3
* @author treeroot A\k-OP]
* @since 2006-2-2 b!_l(2
* @version 1.0 d p_J*8
*/ oLB pG1Va
public class InsertSort implements SortUtil.Sort{ WMl_$Fd6
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/* (non-Javadoc) hq\KSFP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x"_f$,:!
*/ |
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public void sort(int[] data) { /`2VJw
int temp; %xWmzdn
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); .{)b^gE
} Z&J417buk
} yTbBYx9Bi
} RwT.B+Onuy
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} ZYu^Q6b3
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冒泡排序: zB 7wGl9
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package org.rut.util.algorithm.support; E39:}_IV
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import org.rut.util.algorithm.SortUtil; %l3RM*zb
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/** kZF\V7k
* @author treeroot {TUCa
* @since 2006-2-2 {`l]RIig
* @version 1.0 IcaIB)
*/ f{^n<\Jh
public class BubbleSort implements SortUtil.Sort{ (|O;Ci
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/* (non-Javadoc) 69q8t*%O
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |oO0%#1H
*/ bu@Pxz%_
public void sort(int[] data) { Wpj.G
int temp; nc@ul')
for(int i=0;i for(int j=data.length-1;j>i;j--){ x-Xb4?{
if(data[j] SortUtil.swap(data,j,j-1); 2Uu,Vv
} "B)DX*-\?
} C|z`hNp
} VwtGHF'
} c.jnPVf:
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} &
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l\MiG Na
选择排序: aU#8W.~
nb?bx{M
package org.rut.util.algorithm.support; 4+l7v?:Pr
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import org.rut.util.algorithm.SortUtil; %;^6W7
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/** gU+BRTZ&x
* @author treeroot (Grj_p6O
* @since 2006-2-2 F
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* @version 1.0 z XVQLz5
*/ 0Dh a1[=
public class SelectionSort implements SortUtil.Sort { ;zz"95X7
kl2]#G(
/* u%ih7v!r\
* (non-Javadoc) Km\M/j|
* !M3IuDN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :!{aey
*/ H]@Zp"7
public void sort(int[] data) { (m.]0v*&c
int temp; XXe7w3x{
for (int i = 0; i < data.length; i++) { (
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int lowIndex = i; $OjsaE%
for (int j = data.length - 1; j > i; j--) { i.K}(bo;b
if (data[j] < data[lowIndex]) { ]T
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lowIndex = j; }yB@?
} h3O5DP6~
} i_gS!1Z2
SortUtil.swap(data,i,lowIndex); f_;3|i
} Eb{TKz?
} SOP=
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} F!a YK2
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Shell排序: t7)Y@gRy
Lg9ktRKK
package org.rut.util.algorithm.support; xx/DD%IZ
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import org.rut.util.algorithm.SortUtil; U0)(k}Q)
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/** @X4;fd
* @author treeroot \6C"bQ
* @since 2006-2-2 :Z1_;`>CT
* @version 1.0 yd>kJk^~/
*/ Z\dILt:#z
public class ShellSort implements SortUtil.Sort{ lzm9ClkfH
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/* (non-Javadoc) 9';0vrFeM
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ts9N$?0:V
*/ *?\2Ohp
public void sort(int[] data) { _#N~$
for(int i=data.length/2;i>2;i/=2){ n,xK7icYNQ
for(int j=0;j insertSort(data,j,i); 1l1X1
} vLpE|QZ s
} LU;ma((yy[
insertSort(data,0,1); D(Xv shQ
} |mci-ZT
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/** 5HOhk"
* @param data ;5 IS58L
* @param j Of:e6N
* @param i #2u-L~n
*/ Zvr(c|Q
private void insertSort(int[] data, int start, int inc) { Y z%=
int temp; A.z~wu%(
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); [~jhOv^
} tK8\Ib J
} ?%;uR#4
} Xwx;m/
hi.{
} 1u&P,&T
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快速排序: M_*w)<
e@F&/c
package org.rut.util.algorithm.support; g:f0K2)\r:
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import org.rut.util.algorithm.SortUtil; 0imz}Z]
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/** 's&Vg09D,
* @author treeroot R@"N{ [9
* @since 2006-2-2 V(w[`^I>~
* @version 1.0 5i1 >z{
*/ EDnmYaa)dZ
public class QuickSort implements SortUtil.Sort{ `_<AZ{&&
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/* (non-Javadoc) .X:{s,@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [Q^kO;
*/ I
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public void sort(int[] data) { \&e+f#!u
quickSort(data,0,data.length-1); HkrNh>^=
} M{nz~W80
private void quickSort(int[] data,int i,int j){ UejG$JyHP
int pivotIndex=(i+j)/2; Dq-h`lh!D#
file://swap =Oo*7|Z
SortUtil.swap(data,pivotIndex,j);
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JaIj9KLNX
int k=partition(data,i-1,j,data[j]); %|-Rh^H[JK
SortUtil.swap(data,k,j); ytAhhwN~
if((k-i)>1) quickSort(data,i,k-1); ngdVRJL
if((j-k)>1) quickSort(data,k+1,j); [r]USCq
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} rylllJz|L:
/** Gg-<3z
* @param data `
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* @param i ? 4.W
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* @param j y()#FRp7
* @return .Hgiru&
*/ kxf'_Nzy
private int partition(int[] data, int l, int r,int pivot) { A:p0p^*
do{ VQ}=7oe%q
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Z2
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SortUtil.swap(data,l,r); XeZv%` ?
} ?G8 D6
while(l SortUtil.swap(data,l,r); kdoE)C
return l; KNK0w 5
} ("{AY?{{
1TbKnmTx
} Xf#;GYO|2
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改进后的快速排序: 6\E |`
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package org.rut.util.algorithm.support; Y
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import org.rut.util.algorithm.SortUtil; _ H@pYMNH
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/** jMw;`yh
* @author treeroot 3$y]#L
* @since 2006-2-2 Z#oo8
* @version 1.0 moc_}(
*/ my04>6j0
public class ImprovedQuickSort implements SortUtil.Sort { c<4pu
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private static int MAX_STACK_SIZE=4096; ;>CmVC'/
private static int THRESHOLD=10; "ENgu/A!
/* (non-Javadoc) Ay2|@1e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YJ:CqTy
*/ Duz}e80
public void sort(int[] data) { >iG`
int[] stack=new int[MAX_STACK_SIZE]; 2+Fq'!
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s
int top=-1; gbI0?G6XN/
int pivot; wuh$=fya
int pivotIndex,l,r; Fa>Y]Y0r
@c{Z?>dUc#
stack[++top]=0; ^ 0TJys%
stack[++top]=data.length-1; ]cA){^.Jz
6aj)Fe'2
while(top>0){ NIYAcLa@n8
int j=stack[top--]; ^K;,,s;0
int i=stack[top--]; \!631FcQ
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pivotIndex=(i+j)/2; %n-LDn
pivot=data[pivotIndex]; =Qz8"rt#
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SortUtil.swap(data,pivotIndex,j); 3z5,4ps
t[^}/
S
file://partition X@\! \
l=i-1; np)-Yzr
r=j; _@d.wfM
do{ !E$S&zVMQ
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 55yP.@i9J
SortUtil.swap(data,l,r); a?D\H5TF-
} 5g/WQo\
while(l SortUtil.swap(data,l,r); D6v0n6w
SortUtil.swap(data,l,j); );$~/H4
*emUQ/uvf
if((l-i)>THRESHOLD){ vK$T$SL
stack[++top]=i; JBg",2w |C
stack[++top]=l-1; 38 B\ \
} F1/f:<}
if((j-l)>THRESHOLD){ Oz n7C?\*
stack[++top]=l+1; :v&GAs6H
stack[++top]=j; _b#9^2o
} ZPMX19
(zTr/
} hz )L+
file://new InsertSort().sort(data); u2!8'-Ai
insertSort(data); qOk4qbl[
}
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/** N5~g:([k
* @param data g\X"E>X
*/ x.45!8Zb
private void insertSort(int[] data) { ^]Gt<_
int temp; O>'o; 0
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); RtF_p
{s
} b@5bN\"x$
} /#Ew{RvW'
} !7}5"j
;A
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} )iEK7d^-
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归并排序: wV U(Du
q>H!?zi\Hy
package org.rut.util.algorithm.support; U);
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import org.rut.util.algorithm.SortUtil; O9g{XhMv>f
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/** xu_Tocvop
* @author treeroot \yM[?/<
* @since 2006-2-2 kQ4%J,7e4
* @version 1.0 Ij4\* D!
*/ dqG+hh^
public class MergeSort implements SortUtil.Sort{ gS"@P:wYzs
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/* (non-Javadoc) OlV>zam
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -h.']^I
*/ La3f{;|u5M
public void sort(int[] data) { PJb_QL!9
int[] temp=new int[data.length]; 85nUR[)h
mergeSort(data,temp,0,data.length-1);
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} m6g+ B >
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private void mergeSort(int[] data,int[] temp,int l,int r){ F,4Q
int mid=(l+r)/2; 7p2x}[ .\
if(l==r) return ; g,Q!F
mergeSort(data,temp,l,mid); {Y\hr+A
mergeSort(data,temp,mid+1,r); ,`H=%#
for(int i=l;i<=r;i++){ :Z`4ea"w
temp=data; U,g!KN3P
} %f,
9
int i1=l; cZ o]*Gv.
int i2=mid+1; a1om8! C
for(int cur=l;cur<=r;cur++){ e6{/e+/R
if(i1==mid+1) VsUEp_I
data[cur]=temp[i2++]; '!En,*'IS
else if(i2>r) "jAV7lP
data[cur]=temp[i1++]; 7E|0'PPR
else if(temp[i1] data[cur]=temp[i1++]; (&X"~:nm2
else GK\'m@k
data[cur]=temp[i2++]; |=GRPvvi
} pY-izML
} |nocz]yU$
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} &Vl,x/
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改进后的归并排序: }S%a]
2]Y (<PC
package org.rut.util.algorithm.support; ,j2qY'wi
BNaZD<<
import org.rut.util.algorithm.SortUtil; in B}ydk
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/** U>X06T
* @author treeroot <2,@rYe/
* @since 2006-2-2 93YD\R+q
* @version 1.0 >%d]"]
*/ -6)ywq^{z
public class ImprovedMergeSort implements SortUtil.Sort { YM#XV*P0 q
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private static final int THRESHOLD = 10; ~ocd4,d=
OE:t!66
/* [IW@mn>
* (non-Javadoc) E1VCm[j2
* ?F`lI""E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H&%=>hyX
*/ =XoNk1
public void sort(int[] data) { Kji}2j'a
int[] temp=new int[data.length]; @#o$~'my
mergeSort(data,temp,0,data.length-1); eIg2m <9u
} @W^g(I(w
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private void mergeSort(int[] data, int[] temp, int l, int r) { c*\^61T
int i, j, k; yv'mV=BMJ!
int mid = (l + r) / 2; <5L!.Ci
if (l == r) $ar:5kif
return; 8t6h^uQ
if ((mid - l) >= THRESHOLD) {d )Et;_
mergeSort(data, temp, l, mid); .# M5L
else #|$7. e
insertSort(data, l, mid - l + 1); oNiS"\t
if ((r - mid) > THRESHOLD) !3T x\a`?/
mergeSort(data, temp, mid + 1, r); %/UQ0d~b
else KAUYE^
insertSort(data, mid + 1, r - mid); 9:BGA/?
2RM1-j
($
for (i = l; i <= mid; i++) { gqe
z-
temp = data; 8V4Qyi|@F
} c&R .
for (j = 1; j <= r - mid; j++) { .+B!mmp
temp[r - j + 1] = data[j + mid]; vtvr{Uqo@
} O4-UVxv}
int a = temp[l]; {5_*f)$[H
int b = temp[r]; -j<UhW
for (i = l, j = r, k = l; k <= r; k++) { wmoOp;C
if (a < b) { \HH|{
data[k] = temp[i++]; ]Q,RVEtKp
a = temp; i%\nJs*
} else { 4+ 4?0R
data[k] = temp[j--]; X>Xpx<RY!
b = temp[j]; g%\e80~1 (
} pp{%\td
} I5 2wTl0
} MvRuW:
*|` ' L
/** ~I'Z=Wo
* @param data *X<De
* @param l bNL E=#ro
* @param i r &TxRsg{
*/
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private void insertSort(int[] data, int start, int len) { $9b||L
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); IA+>dr
} E!Ng=}G&_
} 6 a$%
} tB1Qr**
} _IY)<'d
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堆排序: Gn_v}31d%
-''vxt?7H&
package org.rut.util.algorithm.support; &0ULj6jj
fnXl60C%
import org.rut.util.algorithm.SortUtil; uM4,_)L
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/** _l/6Qpf
* @author treeroot a%-Yl%#
* @since 2006-2-2 *:d_~B?Tn
* @version 1.0 :A
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*/ `rs1!ZJ,
public class HeapSort implements SortUtil.Sort{ tPp}/a%D
*Pq`~W_M7
/* (non-Javadoc) >#8`Zy:/Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1 9)78kV{
*/ Q!|71{5U
public void sort(int[] data) { /
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MaxHeap h=new MaxHeap(); pkM32v-
h.init(data); !BQ!]u
for(int i=0;i h.remove(); 95(VY)_6#A
System.arraycopy(h.queue,1,data,0,data.length); S)[2\Z{**T
} Xt~/8)&
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private static class MaxHeap{ :m+:%keK
W``e6RX-
void init(int[] data){ ")o.x7~N
this.queue=new int[data.length+1]; $iF7hyZ
for(int i=0;i queue[++size]=data; 9r)5d&,6
fixUp(size); |]B]0J#_
} $~9U-B\
} (
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private int size=0; "\V:W%23W{
`[ne<F?e
private int[] queue; .t}nznh
UbuxD })
public int get() { wicg8[T=B
return queue[1]; }M9'N%PU
} =+"XV8Fi,
m1`ln5(R
public void remove() { "/\:Fdc^
SortUtil.swap(queue,1,size--); g6*}&.&
fixDown(1); hpw;w}m
} Dic(G[
file://fixdown E]7G4
private void fixDown(int k) { /_56H?w\
int j; +nqOP3
while ((j = k << 1) <= size) { JUXK}0d%eN
if (j < size %26amp;%26amp; queue[j] j++; o= 8yp2vG
if (queue[k]>queue[j]) file://不用交换 ',CcL N
break; AM }OLHj
SortUtil.swap(queue,j,k); %_3{Db`R>
k = j; Lh. L~M1X
} h7Ma`w\-
} 3+#bkG
private void fixUp(int k) { 3yZ@i<rfH
while (k > 1) { Q.8Jgel1
int j = k >> 1; 7*4F-5G/
if (queue[j]>queue[k]) ;aFQP:l/
break; I4");T3
SortUtil.swap(queue,j,k); :r~? Z6gK
k = j; y[$e]N
} RSkpf94`
} r2hm`]\8M
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"
} i\PN
j5RMS V
} g|T' oK
b>waxQxjS
SortUtil: #}vcffgZ
Cf10 ud
package org.rut.util.algorithm; ?Dfgyz
*X)OdU
import org.rut.util.algorithm.support.BubbleSort; B)c.`cfr*\
import org.rut.util.algorithm.support.HeapSort; #6YNgJNk
import org.rut.util.algorithm.support.ImprovedMergeSort; a-kU?&*
y
import org.rut.util.algorithm.support.ImprovedQuickSort; M$?~C~b!*
import org.rut.util.algorithm.support.InsertSort; 2h/`RefHJ
import org.rut.util.algorithm.support.MergeSort; MW&;{m?2(
import org.rut.util.algorithm.support.QuickSort; ~o8$/%Oeb/
import org.rut.util.algorithm.support.SelectionSort; 7aU*7!U
import org.rut.util.algorithm.support.ShellSort; ]w')~yk
_=cMa's
/** FB</~
g
* @author treeroot "OWq]q#
* @since 2006-2-2 1f~DUku=
* @version 1.0 2R1W[,Ga!
*/ +-{HT+W
public class SortUtil { K3@UoR
public final static int INSERT = 1; t[DXG2&
public final static int BUBBLE = 2; )X7ZX#ttH
public final static int SELECTION = 3; mM95BUB
public final static int SHELL = 4; c5]1aFKz
public final static int QUICK = 5; PVvG
public final static int IMPROVED_QUICK = 6; &-{4JSII
public final static int MERGE = 7; <ZnAPh
public final static int IMPROVED_MERGE = 8; t<`BaU
public final static int HEAP = 9; OgzPX^q/=
DG&
kY+
public static void sort(int[] data) { MqNp*n2
sort(data, IMPROVED_QUICK); i.'f<z$<
} XBDlQe|>
private static String[] name={ Oc"2|X
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" SIg=_oa
}; E>7[ti_p5
C f<,\Aav
private static Sort[] impl=new Sort[]{ T{ojla(
new InsertSort(), ]6(NeS+
new BubbleSort(), A\?O5#m:$
new SelectionSort(), ;,F}!R
new ShellSort(), 3c
^_IuW-
new QuickSort(), bS0LjvY9g
new ImprovedQuickSort(), >uI|S
new MergeSort(), Kj}}O2
new ImprovedMergeSort(), }F\0Bl&
new HeapSort() ap=_odW~p
}; rfK%%-
~Ipl'cE
public static String toString(int algorithm){ :,cSEST
return name[algorithm-1]; `4$" mO>+
} 0BBWuNF.
qUVV374N
public static void sort(int[] data, int algorithm) { {=&