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。 mtFC H
插入排序: #?M[Q:
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package org.rut.util.algorithm.support; hHEn
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import org.rut.util.algorithm.SortUtil; R90chl
/**
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* @author treeroot !x-9A
* @since 2006-2-2 @(/$;I,
* @version 1.0 Ei,dO;&
*/ =*(_sW6;
public class InsertSort implements SortUtil.Sort{ Xhyc2DKa_
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/* (non-Javadoc) FzsW^u+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h/aG."U
*/ G^P9_Sw]d3
public void sort(int[] data) { :gkn`z
int temp; rIv#YqT
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); F9_X^#%L
} z2.OR,R}]
} a#Z#-y!
} \ 511?ik
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} vKbGG
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冒泡排序: yF
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package org.rut.util.algorithm.support; 'Um\m
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import org.rut.util.algorithm.SortUtil; BW`Tw^j
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/** A8nf"mRD:
* @author treeroot k~Y_%#_
* @since 2006-2-2 /ubGa6N
* @version 1.0 0ZAtBq.s
*/ \o?
public class BubbleSort implements SortUtil.Sort{ )Zyw^KN^
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/* (non-Javadoc) pR:cn kVF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S`spUq1o
*/ &C/,~pJ1S
public void sort(int[] data) {
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int temp; SsL>K*t5
for(int i=0;i for(int j=data.length-1;j>i;j--){ tdi}P/x
if(data[j] SortUtil.swap(data,j,j-1); ,-1taS
} }WNgKw
} ]waCYrG<sY
} <ot%>\C
} :; 3y^!
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} g3w-Le&T
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选择排序: _l]rt
W<H^V"^
package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; 0j-;4>p
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/** q'[yYPDX5x
* @author treeroot K@=_&A!
* @since 2006-2-2 -QydUr/(o
* @version 1.0 \xtmd[7lb<
*/ j98>Jr\
public class SelectionSort implements SortUtil.Sort { u $T'#p1
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f
/* A.S:eQvS%
* (non-Javadoc) q1M16qv5
* }15ooe%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0'y3iar
*/ c:`&QDF
public void sort(int[] data) { ;Q8rAsf9
int temp; +(2mHS0_a
for (int i = 0; i < data.length; i++) { <7~+ehu
int lowIndex = i; 2fJ2o[v
for (int j = data.length - 1; j > i; j--) { SJI+$L\'
if (data[j] < data[lowIndex]) { D)LqkfJ}z^
lowIndex = j; kKSn^qL*
} $Xo_C_:B
} \CE8S+Z%
SortUtil.swap(data,i,lowIndex); .SSj=q4?
} @y\M8C8
} J3=^+/g
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} y>m=A41:g
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Shell排序: yu62$d
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package org.rut.util.algorithm.support; 0~N2MoOl^
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import org.rut.util.algorithm.SortUtil; 9G}Crp
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/** xyTjK.N
* @author treeroot ,n?oNU
* @since 2006-2-2 `BHPjp>
* @version 1.0 W 7Y5~%@
*/
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public class ShellSort implements SortUtil.Sort{ hAp<$7
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/* (non-Javadoc) |Gh~Zup
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H23-%+*J
*/ -^LEGKN
public void sort(int[] data) { H<YS2Ed
for(int i=data.length/2;i>2;i/=2){ O>`DR0
for(int j=0;j insertSort(data,j,i); 8CKI9
} lGr(GHn
} Doy7prKI8
insertSort(data,0,1); Obu>xK(
} x+7jJ=F
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/** 3 aG?^z
* @param data g&V1<n\b+
* @param j <}$o=>'
* @param i gaw/3@
*/ }@:vq8%Q
private void insertSort(int[] data, int start, int inc) { q\g|K3V)
int temp; <ibEo98
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); L?e N(L
} %<w)#eV?
} ']ussFaQ
} `PR)7}/<
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} n089tt=TE
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快速排序: 7Z/KXc[b
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package org.rut.util.algorithm.support; [,TuNd
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import org.rut.util.algorithm.SortUtil; /"$;3n~
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/** _"B5S?
* @author treeroot U_HOfix
* @since 2006-2-2 ^?H3:CS
* @version 1.0 |%R}!O<.c
*/ i`R}IP?71
public class QuickSort implements SortUtil.Sort{ 7"`%-a$7
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/* (non-Javadoc) +Q3i&"QB.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W])<0R52
*/ L}1|R*b
public void sort(int[] data) { >>voL DDd
quickSort(data,0,data.length-1); /8i3 I5*
} 7 Ld5
private void quickSort(int[] data,int i,int j){ X
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int pivotIndex=(i+j)/2; j ,'$i[F'
file://swap 6WQT,@?
SortUtil.swap(data,pivotIndex,j); c3&;Y0SD
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int k=partition(data,i-1,j,data[j]); {re<S<j&
SortUtil.swap(data,k,j); lV-b
if((k-i)>1) quickSort(data,i,k-1); `r:n[N=Y&
if((j-k)>1) quickSort(data,k+1,j); {f\/2k3
kqfO3{-;{:
} [wJM=`!W
/** MV<2x7S
* @param data 1>1&NQ#}
* @param i Ap{p_~~iJ
* @param j a'zf8id
* @return =Vv"\p8
*/ Quy&CV{@
private int partition(int[] data, int l, int r,int pivot) { |Fk>NX
do{ gUs.D_*
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); |gW>D=rkj
SortUtil.swap(data,l,r); FabzP_<b
} mX9amS&B$
while(l SortUtil.swap(data,l,r); dMw0Aw,2]8
return l; ]kQ*t{\
} +,&8U&~`
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} k[0Gz
|^^'GZ%a
改进后的快速排序: _H9.AI
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package org.rut.util.algorithm.support; B 3Y,|*
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import org.rut.util.algorithm.SortUtil; iX]Vkx
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/** Nv@SpV'
* @author treeroot ]3xb Q1
* @since 2006-2-2 (*>%^ C?
* @version 1.0 x$o?ckyH
*/ 2 5DXJb^:
public class ImprovedQuickSort implements SortUtil.Sort { ~ [k0ay
88]V6Rm9[*
private static int MAX_STACK_SIZE=4096; nm)H\i
private static int THRESHOLD=10; 8X,dVX5LT
/* (non-Javadoc) !e5!8z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eM";P/XaX
*/ B8){
public void sort(int[] data) { }&+b\RE
int[] stack=new int[MAX_STACK_SIZE]; 5hN`}Ve
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int top=-1; 'O%itCy)
int pivot; &DQyJJ`k
int pivotIndex,l,r; .v?x>iV
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stack[++top]=0; WZ\bm$
stack[++top]=data.length-1; A
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while(top>0){ WC6yQSnY&
int j=stack[top--]; Id6H~;
int i=stack[top--]; F7!g+LPc<
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pivotIndex=(i+j)/2; jlvh'y`
pivot=data[pivotIndex]; '
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SortUtil.swap(data,pivotIndex,j); J:<mq5[
.E H&GX
file://partition 3
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l=i-1; 6'YT3=
r=j; cR'l\iv+
do{ )k)HQcfjD
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); r%`g` It
SortUtil.swap(data,l,r); 1>I4=mj
} ]_!5g3VQh
while(l SortUtil.swap(data,l,r); lyY\P6
X
SortUtil.swap(data,l,j); e[<vVe!
B 2p/
if((l-i)>THRESHOLD){ gD}lDK6N
stack[++top]=i; .
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stack[++top]=l-1; <'n'>@
} )ry7a
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if((j-l)>THRESHOLD){ +ZFw3KEkz
stack[++top]=l+1; #m
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stack[++top]=j; ='!E;
} muh[wo
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} ~s3X&!#
file://new InsertSort().sort(data); -|K^!G
insertSort(data);
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} =geopktpf
/** H(L.k;B
* @param data 5`Q*
*/ kYbqb?
private void insertSort(int[] data) { ~quof>
int temp; 'q3<R%^Q
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _C`&(?}
} z$64Ep#
} +D7>$&BD
} x*H,eY3
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} 6,wi81F,}
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归并排序: 0d>|2QV
F9ytU> zh
package org.rut.util.algorithm.support; %y96]e1
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import org.rut.util.algorithm.SortUtil; voX4A
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/** ^/6LVB *
* @author treeroot =Msr+P9Ai
* @since 2006-2-2 6zbqv 6
* @version 1.0 6d7E@}<
*/ {ef9ov Xk
public class MergeSort implements SortUtil.Sort{ KgD sqwy
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/* (non-Javadoc) ^(+ X|t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GZefeBi
*/ rY?]p Mp
public void sort(int[] data) { u-s*3Lg&
int[] temp=new int[data.length]; k|hy_? *
mergeSort(data,temp,0,data.length-1); ys/U.e|)!
} 7%j1=V/
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private void mergeSort(int[] data,int[] temp,int l,int r){ h(~@
nd{
int mid=(l+r)/2; wH?]kV8Q
if(l==r) return ; aB_~Vh
mergeSort(data,temp,l,mid); > J.q3
mergeSort(data,temp,mid+1,r); *XUJv&ZN
for(int i=l;i<=r;i++){ ^;8dl.;
temp=data; et`1#_o
} v[Mh[CyB
int i1=l; 3VZ}5
int i2=mid+1; 14~#k%zO(
for(int cur=l;cur<=r;cur++){ FhP$R}F
if(i1==mid+1) ;B^ 9sr
data[cur]=temp[i2++]; nyoLrTs{
else if(i2>r) at|.Q*&a#
data[cur]=temp[i1++]; } yb"/jp
else if(temp[i1] data[cur]=temp[i1++]; tZXq<k9
else (Sv=R(_s
data[cur]=temp[i2++]; ;W 3#q:
} H\%^n<]#
} "g5<j p
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} */_$' /qV
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改进后的归并排序: G1
K@Ir<
a
S;z
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package org.rut.util.algorithm.support; PIHix{YR
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import org.rut.util.algorithm.SortUtil; XQ'$J_hC
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/** ([ jm=[E^
* @author treeroot <@S'vcO
* @since 2006-2-2 )H1\4LeP
* @version 1.0 $RA+StF!]
*/ SpO%nZ";g8
public class ImprovedMergeSort implements SortUtil.Sort { 01n7ua*XX
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private static final int THRESHOLD = 10; eK[9wEdn
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/* H2S/!Q;K
* (non-Javadoc) $jg~a
* ]>/oo =E
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "8$Muwm
*/ Pk3b#$+E
public void sort(int[] data) { ^/ff)'.J
int[] temp=new int[data.length]; :@b=;
mergeSort(data,temp,0,data.length-1); D nl|B\
} }~v&
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private void mergeSort(int[] data, int[] temp, int l, int r) { F2>W{-H+
int i, j, k; .~a.mT
int mid = (l + r) / 2; < ZG!w^
if (l == r) \ nUJ)w
return; >:bXw#w]
if ((mid - l) >= THRESHOLD) TV Zf@U
mergeSort(data, temp, l, mid); +<T361eyY
else <CcSChCg
insertSort(data, l, mid - l + 1); `l'Ine11
if ((r - mid) > THRESHOLD) *x/H
mergeSort(data, temp, mid + 1, r); +ovT?CMo
else R('\i/fy
insertSort(data, mid + 1, r - mid); 'kSm}}y
Q 5&|1m Pb
for (i = l; i <= mid; i++) { ctoh&5%!n+
temp = data; Ub{7 Xk
n
} Y1;jRIOA
for (j = 1; j <= r - mid; j++) { {(IHHA>
temp[r - j + 1] = data[j + mid]; 3V]08
} )b~+\xL5J
int a = temp[l]; hZ|8mV
int b = temp[r]; % kaV?j
for (i = l, j = r, k = l; k <= r; k++) { M_O) w^
'
if (a < b) { ~#dfZa&
data[k] = temp[i++]; *EPJeblAV
a = temp; ?X+PNw|pf
} else { C1uV7t*\
data[k] = temp[j--]; t=\
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b = temp[j]; Mn 8|
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} 9JqT"zj
} ]*X z~Ox2
} o]eG+i6g]
19:1n]*X<
/** ?jU 3%"
* @param data OWp`Wat
* @param l E&ReQgBft
* @param i -nZDFC8y$
*/ `k7X|
private void insertSort(int[] data, int start, int len) { eF(oHn,
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); `[&%fTW+
} Z kBWVZb
} 50dx[v8
} pQxv_4
} Ml,in49
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堆排序: @,{Qa!A>l
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package org.rut.util.algorithm.support; ,va2:V
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import org.rut.util.algorithm.SortUtil; q#F+^)DD [
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/** ~wu\j][2
* @author treeroot 09=w
* @since 2006-2-2 _U
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* @version 1.0 w^ X@PpP
*/ /vPr^Wv
public class HeapSort implements SortUtil.Sort{ ^SbxClUfw!
s)+] pxV0-
/* (non-Javadoc) e35 ")z~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %NcBq3
*/ braI MIQ`
public void sort(int[] data) { FzF#V=9lP
MaxHeap h=new MaxHeap(); %v0;1m
h.init(data); ";upu
for(int i=0;i h.remove(); xg4wtfAbS
System.arraycopy(h.queue,1,data,0,data.length); )Wk&c8|y
} /2cn`dR,
wauM|/KG
private static class MaxHeap{ D|2lBU
hP_{$c{4:g
void init(int[] data){ i&-g
this.queue=new int[data.length+1]; _z\qtl~3
for(int i=0;i queue[++size]=data; sRQ4pnnrn
fixUp(size); +.v+Opp,
} Pk6_ 1LV
} paUJq?Af
4O4}C#6(4
private int size=0; 8\+XtS
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h
private int[] queue; [KMS/'; ]
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public int get() { Bw.?Me)mf|
return queue[1]; D7Ds*X`!l
} g(R!M0hdF
'X~CrgQl
public void remove() { 6&btAwvOHx
SortUtil.swap(queue,1,size--); >}r
1A
fixDown(1); lr[&*v?h
} gu1n0N`b
file://fixdown !N/?b^y
private void fixDown(int k) { 0IQ|`C.
int j; KcM+8W\
while ((j = k << 1) <= size) { K,!f7KKo
if (j < size %26amp;%26amp; queue[j] j++; [9Hrpo]tU:
if (queue[k]>queue[j]) file://不用交换 %htbEKWR
break; <U}25AR
SortUtil.swap(queue,j,k); KssIoP
k = j; P u}PE-b
} 7'7o^>
!
} ?Hbi[YD
private void fixUp(int k) { ,]4.|A_[Rq
while (k > 1) { U\q?tvn'J
int j = k >> 1; d3 p;[;`
if (queue[j]>queue[k]) n*hRlL
break; MNX-D0`g
SortUtil.swap(queue,j,k); _:Ov-HIR
k = j; 0Hr)h{!F"
} Oe0dC9H
} (Li)@Cn%
UO'X"`
} zTze%
{/XU[rn
} 7mYBxE/
/?C6oj1
SortUtil: ~{D:vj4>
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package org.rut.util.algorithm; F5<GGEQb
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import org.rut.util.algorithm.support.BubbleSort; CM+wkU ?,
import org.rut.util.algorithm.support.HeapSort; .-:6L2
import org.rut.util.algorithm.support.ImprovedMergeSort; {\kDu#18Ld
import org.rut.util.algorithm.support.ImprovedQuickSort; xKoNo^ FF
import org.rut.util.algorithm.support.InsertSort; {6*{P!H
import org.rut.util.algorithm.support.MergeSort; u"zQh|
import org.rut.util.algorithm.support.QuickSort; BtP*R,>
import org.rut.util.algorithm.support.SelectionSort; [,qb)
&_
import org.rut.util.algorithm.support.ShellSort; DO?
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/** ]K%D$x{+\
* @author treeroot Ay\!ohIS3
* @since 2006-2-2 Mp^U)S+
* @version 1.0 |9
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*/ 4\Cb4jq%/
public class SortUtil { RH<C:!F^
public final static int INSERT = 1; nb|"dK|
public final static int BUBBLE = 2; hN_,Vyf
public final static int SELECTION = 3; D 3}e{J8
public final static int SHELL = 4; |Vc:o_n7
public final static int QUICK = 5; 0'Qo eFKG
public final static int IMPROVED_QUICK = 6; 2
Xc,c*r
public final static int MERGE = 7; i{2rQy+
public final static int IMPROVED_MERGE = 8; ++0xa%:
public final static int HEAP = 9; l7GLN1#m
^i~'aq
public static void sort(int[] data) { (9D,Ukw
sort(data, IMPROVED_QUICK); 3yIC@>&y(8
} ,6a }l;lv
private static String[] name={ :6Sb3w5h
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" a<{+
JU5
}; kx3]A"]>'
f%Bm x{Ttq
private static Sort[] impl=new Sort[]{ Hy1f,D
new InsertSort(), ACxjY2
new BubbleSort(),
QX393v!
new SelectionSort(), |h%fi-a:
new ShellSort(), ZBfB4<M9xS
new QuickSort(), zXg/.z]
new ImprovedQuickSort(), qbdv
new MergeSort(), UkBr4{+aE
new ImprovedMergeSort(), ;hp?wb
new HeapSort() ppM^&6x^
}; '^.}5be&
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public static String toString(int algorithm){ !Pb39[f
return name[algorithm-1]; 'D;'Pr]
} dKTUW<C
p uLQ_MNV
public static void sort(int[] data, int algorithm) { as| MB
(
impl[algorithm-1].sort(data); j*;/Cah]k
} xkebel`%
g3uI1]QXLg
public static interface Sort { EYF]&+ 9
public void sort(int[] data); kT6EHuB
} })}-K7v1+
WD5ulm?91|
public static void swap(int[] data, int i, int j) { T Jp0^&Q
int temp = data; :j0r~*z-
data = data[j]; nxh9'"th
data[j] = temp; ~WG#Zci-
} p![CH
} Y+I`XeY