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。 F:@Ixk?E
插入排序: Ax^'unfQ:
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package org.rut.util.algorithm.support; 1%@~J\qF
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import org.rut.util.algorithm.SortUtil; 0\#Q;Z2
/** @
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* @author treeroot `@eH4}L*
* @since 2006-2-2 E nvs[YZe
* @version 1.0 9>#|~P&FE
*/ JJ~?ON.H
public class InsertSort implements SortUtil.Sort{ _)l %-*Z7p
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/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4r. W:}4:
*/ ;9PM?Iy[
public void sort(int[] data) { vRq xZN
int temp; 0c5_L6_z
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); O%&@WrFq
} 1 ~7_!
} C#~MR+;
} `aUp&8{
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} Vd0GTpB?1
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冒泡排序: 1pb;A;F,A
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package org.rut.util.algorithm.support; ffM(il/2
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import org.rut.util.algorithm.SortUtil; Du>HF;Fv
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/** OVyy}1Hx
* @author treeroot iW?9oe
* @since 2006-2-2 1,j9(m2
* @version 1.0 ~qS/90,
*/ !T*B{+|
public class BubbleSort implements SortUtil.Sort{ MQ*#oVqv
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/* (non-Javadoc) +*J4q5;E[?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dNQSbp
*/ vy@Lu
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public void sort(int[] data) { !_
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int temp; %d0S-.
for(int i=0;i for(int j=data.length-1;j>i;j--){ OQ7c|O
if(data[j] SortUtil.swap(data,j,j-1); AuTplO0_rE
} sPg6eAd~?
} k^pu1g=6I
} Y/0O9}hf
}
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} 3-bcY4
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选择排序: U_- K6:tr
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package org.rut.util.algorithm.support; > bF!Y]H
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import org.rut.util.algorithm.SortUtil; i8YgG0[)
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/** M:M>@|)
* @author treeroot A{2$hKqHi
* @since 2006-2-2 txo?k/w
* @version 1.0 vB5iG|b}
*/ #`4^zU)
public class SelectionSort implements SortUtil.Sort { t4@g;U?o
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/* MNqyEc""
* (non-Javadoc) f#kevf9zc
* ZYe\"|x,s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]zU<=b@
*/ Sqf.#}u<=
public void sort(int[] data) { KN:dm!A
int temp; :EwA$`/
for (int i = 0; i < data.length; i++) { F[=lA"F^
int lowIndex = i; yl<$yd0Zdu
for (int j = data.length - 1; j > i; j--) { }AW)R&m
if (data[j] < data[lowIndex]) {
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lowIndex = j; xqWrW)
} ,?<h] !aQ
} 1vs>2` DLa
SortUtil.swap(data,i,lowIndex); WlQ=CRY
} Kw0V4UF
} !*Z)[[
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} pE/3-0;}N
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Shell排序: 1IQOl
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package org.rut.util.algorithm.support; z%3"d0
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import org.rut.util.algorithm.SortUtil; q>(u>z!
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/** UUf1T@-
* @author treeroot c9TAV,/fF*
* @since 2006-2-2 D2:a
* @version 1.0 *7;*@H*jd
*/ Cn;H@!8<s
public class ShellSort implements SortUtil.Sort{ SE9u2Jk
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/* (non-Javadoc) $v<hW
A]>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }t
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*/ d)1sP0Z_@
public void sort(int[] data) { 06 Esc^D
for(int i=data.length/2;i>2;i/=2){ y?z _^ppj
for(int j=0;j insertSort(data,j,i); gVA}?t;
} |vDoqlW
} w+9C/U;|s
insertSort(data,0,1); J=SB/8tQ)T
} x]><}!\<&
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/** 0rJ\e
* @param data qVD!/;l
* @param j @VC9gdO/
* @param i f93rY<
*/ %r
private void insertSort(int[] data, int start, int inc) { @EP{VV
int temp; 7cmr
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for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ]7S7CVDk4
} , HI%Xn
} ym*#ZE`B!
} 2PP-0
E
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} ooU Sb
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快速排序: @z$pPo0fW
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package org.rut.util.algorithm.support; fo\J \
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import org.rut.util.algorithm.SortUtil; <x0uO
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/** zGL<m0C
* @author treeroot W3{<e"
* @since 2006-2-2 iWN.3|r
* @version 1.0 9 CK\tx&
*/ OwiWnS<
public class QuickSort implements SortUtil.Sort{ gvc'
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/* (non-Javadoc) Y6<0%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u5XU`!
*/ OU.9 #|q U
public void sort(int[] data) { 1|~#028
quickSort(data,0,data.length-1); Q0q)n=i}]
} )'
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private void quickSort(int[] data,int i,int j){ H&yFSz}6a
int pivotIndex=(i+j)/2; ~b$z\|Y
file://swap wO_pcNYZ8
SortUtil.swap(data,pivotIndex,j); RZ)vU'@kx
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int k=partition(data,i-1,j,data[j]); uU[[[LQq
SortUtil.swap(data,k,j); bV )PT`-,
if((k-i)>1) quickSort(data,i,k-1); $;)noYo
if((j-k)>1) quickSort(data,k+1,j); i^sDh>$J
}lC64;yo
} g"Q}h
/** Y6f+__O
* @param data 7<QYT+6xV
* @param i wwK~H
* @param j *`g-gk
* @return (J^Lqh_
*/ <^*+8{*
private int partition(int[] data, int l, int r,int pivot) { q]iKz%|Z/
do{ %KJhtd"q
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); rq'##`H
SortUtil.swap(data,l,r); im4e!gRE
} .sJys SA\
while(l SortUtil.swap(data,l,r); ^Z-.[Y
return l; $ gr6
} 0XR;5kd%
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} {?
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改进后的快速排序: !4 4mT'Y
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package org.rut.util.algorithm.support; TRySl5jx@
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import org.rut.util.algorithm.SortUtil; DX&lBV
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/** A4#3O5kij
* @author treeroot ^T}}4I_Y
* @since 2006-2-2 8tT&BmT
* @version 1.0 2sd ) w
*/ -
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public class ImprovedQuickSort implements SortUtil.Sort { k}I5x1>&
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private static int MAX_STACK_SIZE=4096; 7}#*3*]
private static int THRESHOLD=10; '.%iPMM
/* (non-Javadoc) MfNpQ: ]c\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %2Xus9;k#
*/ X]zCTY=l
public void sort(int[] data) { qL%.5OCn(
int[] stack=new int[MAX_STACK_SIZE]; c#\ah}]Vo
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int top=-1; iL7-4Lv#
int pivot; 9&O#+FU
int pivotIndex,l,r; Cz=A{<^g
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stack[++top]=0; {FV,j.D
stack[++top]=data.length-1; vB{;N
VVI8)h8
while(top>0){ 'B:Z=0{>N
int j=stack[top--]; $,; ;u:-
int i=stack[top--]; a%MzNH
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pivotIndex=(i+j)/2; ]HJ{dcF
pivot=data[pivotIndex]; Lo|NE[b:G
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SortUtil.swap(data,pivotIndex,j); TdNuD V
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file://partition 5eiZs
l=i-1; PmPyb>HK=P
r=j; HO%E-5b9
do{ bxd3
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _S9rF-9G]
SortUtil.swap(data,l,r); q9W~7
} 9atjK4+o
while(l SortUtil.swap(data,l,r);
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SortUtil.swap(data,l,j); jy\W_CT
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if((l-i)>THRESHOLD){ mHK@(D7X
stack[++top]=i; )XmCy"xx
stack[++top]=l-1; AkYupP2]v
} klK-,J
if((j-l)>THRESHOLD){ #;\L,a|>*
stack[++top]=l+1; p|&ZJ@3
stack[++top]=j; P[Y{LKAbb
} $'A4RVVT
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} ^ [X|As2
file://new InsertSort().sort(data); u"`5
insertSort(data); (TT3(|v
} :DOr!PNA
/** 936Ff*%(l
* @param data ^3Z7dIUww
*/ [+hy_Nc$
private void insertSort(int[] data) { V]l&{hl,
int temp; t7jh?]
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); I!|y;mh:it
} ,~?A,9?%:
} =&di4'`
} b34zhZ
}G>v]bV0V
} Ez06:]Jd
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归并排序: 0OleO9Ua
B,~f "
package org.rut.util.algorithm.support; jGO9n
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import org.rut.util.algorithm.SortUtil; VqcBwJ!?p
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/** TqENaC#&
* @author treeroot ;Ri 3#*a=
* @since 2006-2-2 ~v.jZ/h
* @version 1.0 RpHpMtvNo/
*/ <MPeh&_3#
public class MergeSort implements SortUtil.Sort{ :.C+?$iuX
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/* (non-Javadoc) ??%)|nj.
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U>/<6Wd
*/ 7!O^;]+,
public void sort(int[] data) { Nc
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int[] temp=new int[data.length]; KotPV
mergeSort(data,temp,0,data.length-1); T{_1c oL
} @PYW|*VS
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private void mergeSort(int[] data,int[] temp,int l,int r){ sx-EA&5-9k
int mid=(l+r)/2; l%^h2
o
if(l==r) return ; o `b`*Z
mergeSort(data,temp,l,mid); [ Z#+gh
mergeSort(data,temp,mid+1,r); Of1IdE6~
for(int i=l;i<=r;i++){ \w{@u)h
temp=data; $a`J(I
} 17e=GL
int i1=l; Na\3.:]z
int i2=mid+1; Oamv9RyDvC
for(int cur=l;cur<=r;cur++){ 4 hL`=[AB
if(i1==mid+1) zt7_r`#z
data[cur]=temp[i2++]; hNH.G(l0
else if(i2>r) x7vq?fP0n
data[cur]=temp[i1++]; XxmJP5
else if(temp[i1] data[cur]=temp[i1++]; "nVK< V d
else K5P Gi#
data[cur]=temp[i2++]; p@#]mVJ>9
} JzHqNUn*M
} Z1VC5*K
Gh2#-~|cB
} t[%x}0FP-F
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改进后的归并排序: q]F4Lq(
EYA/CI
package org.rut.util.algorithm.support; x$~3$E
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import org.rut.util.algorithm.SortUtil; MinbE13?U
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/** CT|z[^
* @author treeroot P;j&kuW|zL
* @since 2006-2-2 :lgHL3yl
* @version 1.0 EC<5M5Lc
*/ 7*+Km'=M
public class ImprovedMergeSort implements SortUtil.Sort { YkSuwx@5_q
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private static final int THRESHOLD = 10; nHrP>zN
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/* - o4@#p> >
* (non-Javadoc) \^Ep>Pq`]
* 9X!ET!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $2Ka u 1
*/
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public void sort(int[] data) { PoJmW^:}
int[] temp=new int[data.length]; -UJ?L
mergeSort(data,temp,0,data.length-1); 3voW
} aD+0\I[x
L{!ihJr
private void mergeSort(int[] data, int[] temp, int l, int r) { a[q84[OQ
int i, j, k; D)y{{g*Lnm
int mid = (l + r) / 2; v}Z9+ yRC2
if (l == r) [w,(EE
return; }6<)yW}U
if ((mid - l) >= THRESHOLD) h5x*NM1Ih
mergeSort(data, temp, l, mid); K*[9j 0
else M|ms$1x
insertSort(data, l, mid - l + 1); !IN@i:m
if ((r - mid) > THRESHOLD) -<xyC8$^$
mergeSort(data, temp, mid + 1, r); :MK=h;5Z
else B#1:Y;Z
insertSort(data, mid + 1, r - mid); mU>&ql?e
]+mjOks~
for (i = l; i <= mid; i++) { 3u*82s\8T
temp = data; DTPay1]6
} 8}bZ[
for (j = 1; j <= r - mid; j++) { -H`\?
R
temp[r - j + 1] = data[j + mid]; ]\7lbLv
} 9MT? .q
int a = temp[l]; JfbKf~g
int b = temp[r]; s\_l=v3
for (i = l, j = r, k = l; k <= r; k++) { `{DG;J03[
if (a < b) { yji>*XG
data[k] = temp[i++]; FW_G\W.
a = temp; Vz'HM$
} else { UkZ\cc}aC/
data[k] = temp[j--]; z/weit
b = temp[j]; 7 %3<~'v[
} *_PPrx5
} !I~C0u
} 4\\.n
s1{[{L3
/** un6cD$cHr
* @param data `%oIRuYG]j
* @param l _AprkI_
* @param i mGO>""<:
*/ `YU=~xQ
private void insertSort(int[] data, int start, int len) { 2yvVeo&3
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); #\LZ;&T'N
} Nl
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} U~wjR"='
} JIMWMk;ot
} o*-9J2V=J
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堆排序: La9r
a&C.=
package org.rut.util.algorithm.support; 7lwTZ*rnY
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import org.rut.util.algorithm.SortUtil; '#A:.P
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/** e{0L%%2K
* @author treeroot y+A{Y
* @since 2006-2-2 tfA}`*$s
* @version 1.0 %kq ^]S2O
*/ yc[(lq.^n
public class HeapSort implements SortUtil.Sort{ 8bt53ta
;T>+,
/* (non-Javadoc) &L%Jy #=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PyFj@n
*/ x/xb1"
public void sort(int[] data) { srK53vKMHW
MaxHeap h=new MaxHeap(); 'y.JcS!|
h.init(data); ;\x~ '@
for(int i=0;i h.remove(); wd wp9 r
System.arraycopy(h.queue,1,data,0,data.length); L7}i
q0
} nVXg,Jl
:Jk33 N4y0
private static class MaxHeap{ tFiR!f)
3{e'YD~hP
void init(int[] data){ g8l5.Mpx
this.queue=new int[data.length+1]; @o&Ytd;i
for(int i=0;i queue[++size]=data; @cIgxp
fixUp(size); LWD#a~
} nv)))I\
} 6{.J:S9n
!R6ApB4ZI
private int size=0; (ii(yz|
,#d[ad<
private int[] queue; `eC+% O
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public int get() { B?3juyB`--
return queue[1]; @1g&Z}L
o
} SO3cY#i
z"
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public void remove() { _B[WY
SortUtil.swap(queue,1,size--); :6D0j
fixDown(1); L M
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}
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file://fixdown /H)Br~ l
private void fixDown(int k) { a+Ab]m8`
int j; 63M=,0-Qt
while ((j = k << 1) <= size) { DsGI/c
if (j < size %26amp;%26amp; queue[j] j++; %i"}x/CD[
if (queue[k]>queue[j]) file://不用交换 5un^yRMB-
break; g<a<*)&
SortUtil.swap(queue,j,k); _mk5^u/u
k = j; 1TZPef^y
} 7"cv|6y|
} \|t{e8}
private void fixUp(int k) { f4"4ZVcr
while (k > 1) { DP*@dFU"
int j = k >> 1; 9Ejyg*
if (queue[j]>queue[k]) ]Ik%#l.G_
break; /_*>d)
SortUtil.swap(queue,j,k); wa ky<w,
k = j; X#ZgS!Mn
} V!&P(YO:
} {/|qjkT&W
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} 6Dst;:
J(s;$PG
} 6I>^Pf'ND
/g76Hw>H
SortUtil: QDE$E.a
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package org.rut.util.algorithm; @G*.1;jO
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import org.rut.util.algorithm.support.BubbleSort; cAEok P
import org.rut.util.algorithm.support.HeapSort; )yj:PY]
import org.rut.util.algorithm.support.ImprovedMergeSort; qyyq&
import org.rut.util.algorithm.support.ImprovedQuickSort; Q9sl fQ
import org.rut.util.algorithm.support.InsertSort; w4%AJmt
import org.rut.util.algorithm.support.MergeSort; {Uq:Xw
import org.rut.util.algorithm.support.QuickSort; H;S%Y`V
import org.rut.util.algorithm.support.SelectionSort; |=5/Rax^
import org.rut.util.algorithm.support.ShellSort; 0+ `Pg
>emcJVYV`[
/** *||d\peQ
* @author treeroot _u5dC
* @since 2006-2-2 /S~m)$vu
* @version 1.0 A,#2 ^dR
*/ jO8k6<l
public class SortUtil { .=<$S#x^Hb
public final static int INSERT = 1; E FY@Y[
public final static int BUBBLE = 2; o8ppMM8_R[
public final static int SELECTION = 3; XUSvhr$|
public final static int SHELL = 4; ^E,1V5
public final static int QUICK = 5; O3qM1-k}S
public final static int IMPROVED_QUICK = 6; Phs-(3
public final static int MERGE = 7; Cq\I''~8
public final static int IMPROVED_MERGE = 8; 4!%F\c46
public final static int HEAP = 9; B42sb_
zwr\:Hu4
public static void sort(int[] data) { W^3;F1
sort(data, IMPROVED_QUICK); 1@_T m
} #/
"+
private static String[] name={ ; Lql_1
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" *e/K:k
}; 1%`7.;!i
BX< dSK
private static Sort[] impl=new Sort[]{ AGq>=avv
new InsertSort(), ]KuMz p!
new BubbleSort(), ]'h; {;ug
new SelectionSort(), XG 0v
new ShellSort(), RU&_j*U
new QuickSort(), _Qd,VE
8u
new ImprovedQuickSort(), o6L9UdT
new MergeSort(), r;gP}H ?
new ImprovedMergeSort(), y%cO#P@
new HeapSort() -F1-
e+=
}; (OmH~lSO.
k
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public static String toString(int algorithm){ e@n!x}t8
return name[algorithm-1]; L?RF;jf
} 2R.2D'4)`
UVEz;<5@\
public static void sort(int[] data, int algorithm) { ]RIVc3?;$
impl[algorithm-1].sort(data); KQ`=t
} G>z,#Xt
,Em$ !n
public static interface Sort { %b}gDWs
public void sort(int[] data); _*6v|Ed?
} k\7:{y@,
XDz5b.,
public static void swap(int[] data, int i, int j) { ry0%a[[
int temp = data; 9uYyfb:
,z
data = data[j]; HeA{3s
data[j] = temp; }Je>;{&%
} ;*cLG#&'M
} {9 PR()_