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。 s"WBw'_<<
插入排序: U9
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package org.rut.util.algorithm.support; yplG18
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import org.rut.util.algorithm.SortUtil; D^|9/qm$
/** K3L"^a
* @author treeroot .%IslLZ
* @since 2006-2-2 gGEIK0\{
* @version 1.0 eeW`JG-E
*/ Kk=LXmL2
public class InsertSort implements SortUtil.Sort{ ;g+]klR!
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/* (non-Javadoc) { D+Ym%n
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z|I-BPyn
*/ _%B/!)v
public void sort(int[] data) { ^^U%cu Kg
int temp; pM9yOY
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2e59Ez%k6
} ^&Q<tN7
} >'b=YlUL
} >I^9:Q
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} f!x[ln<
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冒泡排序: *C7F2o
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package org.rut.util.algorithm.support; LTXz$Z]
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import org.rut.util.algorithm.SortUtil; H O*YBL
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/** 'mE^5K
* @author treeroot cDIBDC
* @since 2006-2-2 6e.[,-eU
* @version 1.0 UFw](%=&M
*/
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public class BubbleSort implements SortUtil.Sort{ ,EI:gLH
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/* (non-Javadoc) kAo.C Nj7
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o_$&XNC_
*/ ($8t%jVWJJ
public void sort(int[] data) { {[W(a<%bXm
int temp; ]Lm'RlV
for(int i=0;i for(int j=data.length-1;j>i;j--){ C6]OAUXy:F
if(data[j] SortUtil.swap(data,j,j-1); $gvr
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} ?:uNN
} ),`8eQC
} v+6e;xl8
}
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} t,HFz6
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选择排序: z_&P?+"Df
S-c ^eLzQ
package org.rut.util.algorithm.support; }`_(<H
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import org.rut.util.algorithm.SortUtil; cP rwW6
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/** e.8$ga{
* @author treeroot 7u|B ](FS
* @since 2006-2-2 wk @,wOt
* @version 1.0 [_.n$p-
*/ 9 <\`nm
public class SelectionSort implements SortUtil.Sort { iKAusWj
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/* `q_<Im%I
* (non-Javadoc) !Z|($21W
* qINTCm j
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) izuF !9
*/ /{*$JF
public void sort(int[] data) { Ch5+N6c^
int temp; :NE/Ddgc'
for (int i = 0; i < data.length; i++) { f<=Fe:1.
int lowIndex = i; ^$NJD
for (int j = data.length - 1; j > i; j--) { 6R4<J%$P
if (data[j] < data[lowIndex]) { ^ R~~L
lowIndex = j; Q2QY* A
} f~ U.a.Fb
} e|lD:_1i
SortUtil.swap(data,i,lowIndex); s&Yi 6:J
} z 7T0u.4Ss
} {HrZ4xQnpV
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} G%{0i20_
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Shell排序: ;Gd~YGW^#
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package org.rut.util.algorithm.support; ^+/kr/
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import org.rut.util.algorithm.SortUtil; OZ(dpV9.S
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/** T?wzwGp-[
* @author treeroot |"Z{I3Umg
* @since 2006-2-2 <+tD z (
* @version 1.0 Adx`8}N8
*/ $/Ov2z
public class ShellSort implements SortUtil.Sort{ VW<0Lt3
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/* (non-Javadoc) DL8x":;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @S3f:s0~D
*/ Yj3I5RG
public void sort(int[] data) { XKU=oI0\j
for(int i=data.length/2;i>2;i/=2){ <<zI\+V
for(int j=0;j insertSort(data,j,i); ;rHO&(h-
} #b)e4vwCq
} L%h/OD
insertSort(data,0,1); >I'%!E;
} i.y)mcB4
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/** >)**khuP7
* @param data ELD!{bMT
* @param j JAjku6
* @param i \ |!\V
*/ K$[$4 dX]
private void insertSort(int[] data, int start, int inc) { U[\Vj_?(I
int temp; $xgBKD
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Z-X?JA\&
} {?8B,G2r
} I'!/[\_
} MaY682}|y
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} e2)autBe
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快速排序: <L0#O(L
r4XH =
package org.rut.util.algorithm.support; G|
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import org.rut.util.algorithm.SortUtil; ~)]} 91p
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/** ULqoCd%bK
* @author treeroot =xN= #
* @since 2006-2-2 -:Rp'SJ
* @version 1.0
%D=]ZV](
*/ Dr#c)P~Wd
public class QuickSort implements SortUtil.Sort{
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/* (non-Javadoc) ;H0 {CkH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qUJ
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*/ E-2eOT
public void sort(int[] data) { @{HrJ/4%:&
quickSort(data,0,data.length-1); aUopNmN
} vqdX^m^PY
private void quickSort(int[] data,int i,int j){ obH;g*
int pivotIndex=(i+j)/2; 47>>4_Hz
file://swap aaW]JmRb
SortUtil.swap(data,pivotIndex,j); ~$,qgf
=H`Q~Xx
int k=partition(data,i-1,j,data[j]); ml!5:r>
SortUtil.swap(data,k,j); <[~,uR7
if((k-i)>1) quickSort(data,i,k-1); 5K%Wa]W
if((j-k)>1) quickSort(data,k+1,j); {MBTP;{*~
iz[gHB
} MgMD\
/** | A)\
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* @param data b^CNVdo'
* @param i 8p^B hd
* @param j H`QQG!
* @return k!L@GQ
*/ zTm]AG|0
private int partition(int[] data, int l, int r,int pivot) { }
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do{ %&<LNEiUN
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); (P|pRVO
SortUtil.swap(data,l,r); V9%aBkf8w
} ?&+9WJ<M
while(l SortUtil.swap(data,l,r); :!TIK1
return l; M[]A2'fS
} 5"KlRuv%
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} v3[@1FQ"
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改进后的快速排序: iw?I
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package org.rut.util.algorithm.support; 5TKJWO.
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import org.rut.util.algorithm.SortUtil; OS-f(qXd+
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/** ",qU,0
* @author treeroot :D:DnVZ-[@
* @since 2006-2-2 IVxWxM*N<
* @version 1.0 s][24)99
*/ [U{UW4
public class ImprovedQuickSort implements SortUtil.Sort { %eWqQ3{P]
){;02^tX
private static int MAX_STACK_SIZE=4096; kL*0M<0 (
private static int THRESHOLD=10; qdD)e$XW,
/* (non-Javadoc) V*[b}Xew
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V
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*/ pW\'ZRj
public void sort(int[] data) { )X+mV
int[] stack=new int[MAX_STACK_SIZE]; tOl e>]
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int top=-1; !
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int pivot; *?p|F&J
int pivotIndex,l,r; j Ch=@<9
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stack[++top]=0; kLSrj\6I[
stack[++top]=data.length-1; ?)4?V\$
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while(top>0){ E+95WF|4k"
int j=stack[top--]; cQNs L
int i=stack[top--]; ]2SI!Ai7
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pivotIndex=(i+j)/2; ,L>
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pivot=data[pivotIndex]; QCOo
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SortUtil.swap(data,pivotIndex,j); +C]&2zc.
j{++6<tr
file://partition 256LH Y|6
l=i-1; y2L#:[8
r=j; uq3{hB#
do{ F"+o@9]
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); iI1n2>V3y
SortUtil.swap(data,l,r); /u<nLj 1
} *~XA'Vw!
while(l SortUtil.swap(data,l,r); Kb;dKQ
SortUtil.swap(data,l,j); $D1w5o-
RBKOM$7
if((l-i)>THRESHOLD){ g2cVZ!GIj
stack[++top]=i; xb2?lL]
stack[++top]=l-1; A;XOT6jv?
} El_Qk[X|A
if((j-l)>THRESHOLD){ [IZM.r`Z
stack[++top]=l+1; N3BL3:@O
stack[++top]=j; }ET,ysa
} Wzq>JNny
c~}l8M%
} M)-6T{[IT
file://new InsertSort().sort(data); {2d_"lHBt
insertSort(data); $RX'(/
} Sb2v_o
/** +xv!$gJEj
* @param data @exey
*/ oih5B<&f#
private void insertSort(int[] data) { {^)70Vz>PE
int temp; Pn.bVV:
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); K+\nC)oG
} AEirj /
} "d/s5sP|S
} '_s}o<
{Bvj"mL]j
} F?+3%>/A@
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归并排序: gbBy/_b
/hW d/H]
package org.rut.util.algorithm.support; !\ND(
V)M1YZV{
import org.rut.util.algorithm.SortUtil; ]:]H:U]p
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/** )P&9A)8
* @author treeroot ,*id'=S
* @since 2006-2-2 F'8T;J7
* @version 1.0 Lz9#A.
*/ 9 ;t]Hp_+K
public class MergeSort implements SortUtil.Sort{ 6SM:x]`##,
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/* (non-Javadoc) ;#+0L$<t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G#`\(NW
*/ >>Ar$
public void sort(int[] data) { "bQ[CD
int[] temp=new int[data.length]; j F"YTr6
mergeSort(data,temp,0,data.length-1); 9W7#u}Z
} j|fd-<ng
t
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private void mergeSort(int[] data,int[] temp,int l,int r){ y7\"[<E`(V
int mid=(l+r)/2; +%>:0mT
if(l==r) return ; n^(A=G
mergeSort(data,temp,l,mid); 9v)%dO.
mergeSort(data,temp,mid+1,r); bKVj [r8D~
for(int i=l;i<=r;i++){ D>L2o88
temp=data; K<sC F[
} WKM)*@#,
int i1=l; hn)a@
int i2=mid+1; &-yGVx
for(int cur=l;cur<=r;cur++){ V3N0Og3
if(i1==mid+1) cR{>IH 4^
data[cur]=temp[i2++]; H!IshZfktn
else if(i2>r) 2C^B_FUg|]
data[cur]=temp[i1++]; 5ABhj* 7
else if(temp[i1] data[cur]=temp[i1++]; n| O [a6G
else yqOuX>m 1c
data[cur]=temp[i2++]; Yj(4&&Q
} EOKzzX7 S
} Iry
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} G* b2,9&F
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改进后的归并排序: \,UZX&ip
;Q0bT`/X
package org.rut.util.algorithm.support; :,pSWfK H
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import org.rut.util.algorithm.SortUtil; ;$j7H&UNQj
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/** Yepe=s+9
* @author treeroot er.L7
* @since 2006-2-2 a l9.}
* @version 1.0 x<i}_@Sn_+
*/ {U!St@
public class ImprovedMergeSort implements SortUtil.Sort { gIEl.
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private static final int THRESHOLD = 10; (n{wg(R
pI[ZBoR~
/* ,3DXFV'uxb
* (non-Javadoc) ?dZt[vAMn
* 9 t
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N[|Nxm0z/C
*/ g+8hp@a
public void sort(int[] data) { 1n*W2:,z
int[] temp=new int[data.length]; ,.IEDF<&
mergeSort(data,temp,0,data.length-1); 8[%Ao/m
} qa >Ay|92e
=4!nFi
private void mergeSort(int[] data, int[] temp, int l, int r) { 1r)kR@!LNG
int i, j, k; cp
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int mid = (l + r) / 2; n}-3o]ku
if (l == r) Ok-.}q>\Mv
return; ;(6g\'m
if ((mid - l) >= THRESHOLD) VzS&`d.h
mergeSort(data, temp, l, mid); @gGRm
else BZK`O/
insertSort(data, l, mid - l + 1); 4pz|1Hw7
if ((r - mid) > THRESHOLD) }A$WO{2
mergeSort(data, temp, mid + 1, r); s Wjy6;
else ({}( qm
insertSort(data, mid + 1, r - mid); ewsKH\#
]LPQYL
for (i = l; i <= mid; i++) { cFd
>oDS
temp = data; i=FQGWAUu
} `ejUs]SR
for (j = 1; j <= r - mid; j++) { y?
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temp[r - j + 1] = data[j + mid]; XkKC!
} QvPD8B
int a = temp[l]; wt}9B[
int b = temp[r]; o6kNx>tc)
for (i = l, j = r, k = l; k <= r; k++) { hmbj*8
if (a < b) { AF\T\mtvRm
data[k] = temp[i++]; C"T1MTB
a = temp; J<n+\F-s
} else { ;+ "f
data[k] = temp[j--]; z+2V4s =
b = temp[j]; wgeNs9L
} pj|pcv^
} >:sUL<p
} tS# `.F~y
5 +9Ze9
/** :bU(S<%M
* @param data Ac k}QzXO
* @param l :HViX:]H
* @param i +~Cy$MCX
*/ Fr?z"
private void insertSort(int[] data, int start, int len) { e59dVFug.U
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); P3tx|:gV
} 7iC *Pr
} TTNkr`
} 8
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} [(LV
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堆排序: jLg@FDb~
-#`c5y}P
package org.rut.util.algorithm.support; ;a"q'5+Ne
Nw J:!
import org.rut.util.algorithm.SortUtil; aiCFH_H4;L
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/** v"u^M-_
* @author treeroot ][PzgzG
* @since 2006-2-2 ~o3Hdd_#}N
* @version 1.0
}WFf''Z-
*/ }7<5hn E
public class HeapSort implements SortUtil.Sort{ Zwt; d5U
D6D1S/:ij'
/* (non-Javadoc) 9W*+SlH@!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qf'm=efRyu
*/ JM$.O;y
-
public void sort(int[] data) { pz^<\
MaxHeap h=new MaxHeap(); XP[uF ;w
h.init(data); K5Wg"^AHY/
for(int i=0;i h.remove(); 1tzV8(7
System.arraycopy(h.queue,1,data,0,data.length); u }hF8eD
} ,M !tm7
<M?:
private static class MaxHeap{ wl=61Mb
-OZ 5vH0
void init(int[] data){ ^:, l\Y
this.queue=new int[data.length+1]; RH0>ZZR
for(int i=0;i queue[++size]=data; 5R$G(Ap_
fixUp(size); i yYJR
} mbl]>JsQD
} y2HxP_s?P?
I 1d0iU
private int size=0; yKagT$-
=?0lA_
0
private int[] queue; }`VDD?M
<c[U#KrvJ
public int get() { wHjLd$ +o
return queue[1]; FwKj+f"
} =Yo1v=wxN
9D\4n
public void remove() { d87vl13
SortUtil.swap(queue,1,size--); Qq-"Cg@-/
fixDown(1); 4S0>-?{
} /h2b;"
file://fixdown bte~c
private void fixDown(int k) { {'+QH)w(
int j; z"4]5&3A
while ((j = k << 1) <= size) { XK(`mEi
if (j < size %26amp;%26amp; queue[j] j++; +KGZHO!
if (queue[k]>queue[j]) file://不用交换 =]R3& ]#n
break; VvbFp
SortUtil.swap(queue,j,k); MWk:sBCqr
k = j; ;#G oGb4AM
} jd`},X /
} S&C1 TC
private void fixUp(int k) { X8eJ4%
while (k > 1) { A?Q a 4i
int j = k >> 1; 3q[WHwmm
if (queue[j]>queue[k]) ivgpS5 M`Y
break; ajl
2I/D
SortUtil.swap(queue,j,k); ChryJRuwv5
k = j; hlZ@Dq%f
} SZ![%)83
} S/vf'gj
rtJl _0`
} `pZs T
^G[
%wV>0gQTf
} }H4=HDO
G}@#u9
SortUtil: j Ib
DH DZ_t:
package org.rut.util.algorithm; x Ha=3n
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import org.rut.util.algorithm.support.BubbleSort; PHg48Y"Nd
import org.rut.util.algorithm.support.HeapSort; et,GrL)l
import org.rut.util.algorithm.support.ImprovedMergeSort; jg
2qGC
import org.rut.util.algorithm.support.ImprovedQuickSort; ^ OJyN,A
import org.rut.util.algorithm.support.InsertSort; t-u|U(n
import org.rut.util.algorithm.support.MergeSort; V5"CSMe
import org.rut.util.algorithm.support.QuickSort; NY$uq+Z>
import org.rut.util.algorithm.support.SelectionSort; m^%|ZTrwN7
import org.rut.util.algorithm.support.ShellSort; d&cU*
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/** QlFZO4 P3|
* @author treeroot +YOKA*
* @since 2006-2-2 wCs3:@UH
* @version 1.0 7z6b@$,
*/ \ A1uhHP!
public class SortUtil { ){s*n=KIO
public final static int INSERT = 1; vqslirC
public final static int BUBBLE = 2; P=L$;xgp
public final static int SELECTION = 3; |6:=}dE#[
public final static int SHELL = 4; $$i.O}
public final static int QUICK = 5; 1PaUI#X"2F
public final static int IMPROVED_QUICK = 6; A\rt6/
public final static int MERGE = 7; <HWS:'1
public final static int IMPROVED_MERGE = 8; @4~=CV%j
public final static int HEAP = 9; Dq\ Jz~
J`M&{UP
public static void sort(int[] data) { |XYEn7^r
sort(data, IMPROVED_QUICK); eC
DIwB28
} 8GPIZh'0h
private static String[] name={ \2[<XG(^
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" TG48%L
}; m4K* <
"\"DCDKmG
private static Sort[] impl=new Sort[]{ Eu}b8c
new InsertSort(), 5 /",<1
new BubbleSort(), 6[qA`x#
new SelectionSort(), pN6%&@) =
new ShellSort(), x"kjs.d7[<
new QuickSort(), J;t 7&Zpe
new ImprovedQuickSort(), }F6<w{|
new MergeSort(), )/ Ud^wi
new ImprovedMergeSort(), rr`;W}3
new HeapSort() =*BIB5
}; {
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public static String toString(int algorithm){ %U7.7dSOI;
return name[algorithm-1]; -b&{+= ^c
} v7
}/dRU${!
public static void sort(int[] data, int algorithm) { ubsSa}$q
impl[algorithm-1].sort(data); D(W,yq~7uY
} +1JH
m8Vdb"0
public static interface Sort { Y&H}xn
public void sort(int[] data); 2N#$X'8
} <%}QDO8\i
h/eR
public static void swap(int[] data, int i, int j) { ~na!@<zB{
int temp = data; |!|^ v
data = data[j]; ! hd</_#
data[j] = temp; s1Ok|31|
} Bm$"WbOq*R
} 5
*}R$