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。 y;zt_O/
插入排序: }DJ|9D^yf
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package org.rut.util.algorithm.support; /#:Rd^
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import org.rut.util.algorithm.SortUtil; TP{>O%b
/** :D<:N*9i
* @author treeroot x:!C(Ep)
* @since 2006-2-2 {E;2&d
* @version 1.0 ;% /6Y~/
*/ ZMdM_i?
public class InsertSort implements SortUtil.Sort{ z\xiACIc
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/* (non-Javadoc) A2}Z
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l*F!~J3
*/ fR+Ov8PCq
public void sort(int[] data) { *i=?0M4S
int temp; y%{*uH}SL
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &>&dhdTQ
} =-OCM*5~S
} 0ClX
} /Ki0+(4
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} kS@9c _3S
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冒泡排序:
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package org.rut.util.algorithm.support; Zp/qs
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import org.rut.util.algorithm.SortUtil; .Ws iOJU
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/** aHBByH
* @author treeroot E[SV*1)
* @since 2006-2-2 ^BF@j4*~
* @version 1.0 %f_)<NP9=
*/ O0K@M
public class BubbleSort implements SortUtil.Sort{ M3ecIVm8(
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/* (non-Javadoc) "'Q" (S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fl
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*/ '<RB
public void sort(int[] data) { SX_kr^#
int temp; <6d{k[7fz)
for(int i=0;i for(int j=data.length-1;j>i;j--){ Ez7V>FN X
if(data[j] SortUtil.swap(data,j,j-1); M^|"be~{'
} 1jZDw~
} TS\A`{^T
} *3w/`R<\
} z/eU^2V
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} 9,iq"dQ
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选择排序: vWnHC
vOvxQS}dBp
package org.rut.util.algorithm.support; tj"v0u?zW
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import org.rut.util.algorithm.SortUtil; Ux%\Y.PPI
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/** 1cHSgpoJ
* @author treeroot %S(#cf!HP
* @since 2006-2-2 $>S}acuC
* @version 1.0 C*W.9
*/ 9sfB+]}h
public class SelectionSort implements SortUtil.Sort { }\PE {
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/* zJy 89ib'
* (non-Javadoc) h+zkVRyA
* .J<qfQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w]o:c(x@
*/ 1OiZNuI:E
public void sort(int[] data) { j{7ilo(i
int temp; )CwMR'LV
for (int i = 0; i < data.length; i++) { r2E>sHw
int lowIndex = i; 6*(h9!_T1
for (int j = data.length - 1; j > i; j--) { vUo.BA#;.b
if (data[j] < data[lowIndex]) { v2Qc}o
lowIndex = j; a.Rp#}f
} 1,%#O;ya
} rHC+nou
SortUtil.swap(data,i,lowIndex); QC\,
} OIXAjU*N
} RAv RNd
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} 8Y{}p[UFT
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Shell排序: C%95~\Ds
zP{<0o
package org.rut.util.algorithm.support; NU)`js
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q>
import org.rut.util.algorithm.SortUtil; n&3iv^
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/** 'sjJSc
* @author treeroot =7J|KoKK
* @since 2006-2-2 RV#uy]
* @version 1.0 }]39
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*/ l_YdIUl
public class ShellSort implements SortUtil.Sort{ XTi0,e]5{u
njwR~ aL`|
/* (non-Javadoc) ?,i#B'Z^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :m)Rmwn_
*/ -}N\REXE
public void sort(int[] data) { FkxhEat8
for(int i=data.length/2;i>2;i/=2){ eJ=Y6;d$
for(int j=0;j insertSort(data,j,i); ax{-Qi7z-+
} ^7s6J{<
} v_@#hf3
insertSort(data,0,1); Y;> p)'z
} xo)?XFM2
RESGI}u
/** 21/a3Mlx#
* @param data "- j@GCme
* @param j &6|^~(P?
* @param i )q]j?Z.
*/ 8|jX ~f
private void insertSort(int[] data, int start, int inc) { iz
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int temp; e/HX,sf_g
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); K}5$;W#
} `.sIZku
} xU\:Vid+A
} d$?n6|4
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} gH{\y5%rO
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快速排序: h'YcNkM
2>
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package org.rut.util.algorithm.support; seD+~Y\z
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import org.rut.util.algorithm.SortUtil; VzYP:QRz
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/** ~tj7zI6
* @author treeroot piiQ
* @since 2006-2-2 ;k41+O:f@
* @version 1.0 "6NNId|Y
*/ K[|P6J
public class QuickSort implements SortUtil.Sort{ 4#7@KhK}
rgZrE;*;
/* (non-Javadoc) 8^"|-~#<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kFa?q}47
*/ NMY!-Kv 5
public void sort(int[] data) { \7tvNa,C
quickSort(data,0,data.length-1); }9Dv\"t5
} {FmFu$z+[
private void quickSort(int[] data,int i,int j){ u/:Sf*;?
int pivotIndex=(i+j)/2; "vRqtEBO@
file://swap gMK3o8B/
SortUtil.swap(data,pivotIndex,j); #/v_h6$
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int k=partition(data,i-1,j,data[j]); 4a \+o]
SortUtil.swap(data,k,j); C<=p"pWw
if((k-i)>1) quickSort(data,i,k-1); I8%'Z>E(
if((j-k)>1) quickSort(data,k+1,j); B)cb}.N:
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} 98}vbl31j
/** 6=lQT
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* @param data fu "z%h]
* @param i ?
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* @param j Gc!{%x
* @return L2O57rT2
*/ 4aGpKvW
private int partition(int[] data, int l, int r,int pivot) { awW\$Q
do{ `M<G8ob
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); yhn
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SortUtil.swap(data,l,r); .p0n\$r
} d\Z4?@T<5
while(l SortUtil.swap(data,l,r); lRK?%~
return l; sF3
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} PWD]qtr
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} k'q
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改进后的快速排序: <:7e4#
;3}b&Z[N]
package org.rut.util.algorithm.support; d@4=XSj
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import org.rut.util.algorithm.SortUtil; ,F9wc<V8
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/** EGr5xR-
* @author treeroot k+G4<qw
* @since 2006-2-2 vlyNQ7"%
* @version 1.0 CKt~#$ I%
*/ h?tV>x/Fu
public class ImprovedQuickSort implements SortUtil.Sort { juYt =
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private static int MAX_STACK_SIZE=4096; GeTCN
private static int THRESHOLD=10; i1&noRGl
/* (non-Javadoc) Sh6 NgO
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z$K%@q,10+
*/ EMH}VigR
public void sort(int[] data) { 2-2LmxLG
int[] stack=new int[MAX_STACK_SIZE]; vjWgR9 4/{
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int top=-1; xW )8mv?4n
int pivot;
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int pivotIndex,l,r; r~a}B.pj
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stack[++top]=0; S?WUSx*N
stack[++top]=data.length-1; EqwA8?M
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while(top>0){ imuHSxcaV
int j=stack[top--]; BNLall
int i=stack[top--];
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pivotIndex=(i+j)/2; R|yTUGY
pivot=data[pivotIndex]; @XJv9aq
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SortUtil.swap(data,pivotIndex,j); o
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file://partition <CdO& xUY
l=i-1; d@~)Wlje
r=j; TR;-xst@
do{ AS398L
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); OTm"Iwzu@
SortUtil.swap(data,l,r); 8A=(,)`}9
} 06r cW `
while(l SortUtil.swap(data,l,r); GR9F^Y) K{
SortUtil.swap(data,l,j); ~Y$1OA8
5
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if((l-i)>THRESHOLD){ n+w>Qz'
stack[++top]=i; n$K_KU v
stack[++top]=l-1; =^{+h>#s@
} pgarGaeq
if((j-l)>THRESHOLD){ ?z.`rD$}(n
stack[++top]=l+1; owB)+
stack[++top]=j; NiF*h~q
} hHQt4 r'd
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} ny0`~bl{p
file://new InsertSort().sort(data); rA7S1)Kq
insertSort(data); q
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} f&J*(F*u
/** IB<ihk
* @param data g>{=R|uO5
*/ +-i@R%
private void insertSort(int[] data) { s4\2lBU?
int temp; -u(#V#}OV?
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); KA7nncg;,
} ?xega-l
} !cZIoz
} N~_gT
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} x4(WvQ%O#
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归并排序: A}o1I1+
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package org.rut.util.algorithm.support; G}x^PJJt
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import org.rut.util.algorithm.SortUtil; psBBiHB[L
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/** )Lq FZ~B
* @author treeroot i@6 kIC
* @since 2006-2-2 !!AutkEg>
* @version 1.0 =:lacK(0
*/ 9(Z)c
public class MergeSort implements SortUtil.Sort{ te_D
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/* (non-Javadoc) u<[Y6m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .*+&>m7
*/ *e=e7KC6kI
public void sort(int[] data) { v "07H
int[] temp=new int[data.length]; y}8j_r
mergeSort(data,temp,0,data.length-1); cVU[>gkg_
} N6eY-`4y
}6\p7n
private void mergeSort(int[] data,int[] temp,int l,int r){ j`bOJTBE
int mid=(l+r)/2; 2KU[Yd
if(l==r) return ; uKplPze?
mergeSort(data,temp,l,mid); aV1(DZ83
mergeSort(data,temp,mid+1,r); D n^RZLRhy
for(int i=l;i<=r;i++){ 9tJiIr8i
temp=data; Q'Q^K
} dPS}\&1
int i1=l; 0I,-1o|s
int i2=mid+1; Q~`n%uYg\{
for(int cur=l;cur<=r;cur++){ z5?xmffB
if(i1==mid+1) *5 5yF`
data[cur]=temp[i2++]; Gg_i:4F
else if(i2>r) TB9ukLG^<<
data[cur]=temp[i1++]; NVQIRQ.
else if(temp[i1] data[cur]=temp[i1++]; r__uPyIMG/
else ke/QFN-`
data[cur]=temp[i2++]; 9G&l{7 =
} <)&;9C
} 3K{'~?mM
Bb
m 1&d#
} >n#Pq{7aF
hD"Tjd` P
改进后的归并排序: 1 #_R`(C{
/.vB /{2
package org.rut.util.algorithm.support; N[Fz6,ZG _
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import org.rut.util.algorithm.SortUtil;
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/** 4Vh#Ye:`
* @author treeroot \S
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* @since 2006-2-2 "gYn$4|R7*
* @version 1.0 |#"<{RS+w
*/ (2X`imJ
public class ImprovedMergeSort implements SortUtil.Sort { -(dc1?COi
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private static final int THRESHOLD = 10; E`BL3+k Q
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/* 2!}5shB
* (non-Javadoc) &W*9'vSm.
* X180_Kt2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qn:3s
*/ "4C b dD//
public void sort(int[] data) { jCkYzQUPz
int[] temp=new int[data.length]; 3nMXfh/
mergeSort(data,temp,0,data.length-1); Pi`}-GUe,
} Enyx+]9
s'RE~,
private void mergeSort(int[] data, int[] temp, int l, int r) { N2WQrTA:S+
int i, j, k; <;G.(CK@n
int mid = (l + r) / 2; B
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if (l == r) R^4JM,v9x`
return; rZEL7{
if ((mid - l) >= THRESHOLD) )ERmSWq/u
mergeSort(data, temp, l, mid); c"~+Y2]tL
else K 0R<a~
insertSort(data, l, mid - l + 1); yL{X}:;}
if ((r - mid) > THRESHOLD) Fu].%`*xJ
mergeSort(data, temp, mid + 1, r); 'W(!N%u
else j#6@cO'`
insertSort(data, mid + 1, r - mid); =wEU+R_#o
k/srT<
for (i = l; i <= mid; i++) { \iVb;7r)9:
temp = data; 4Qwv:4La
} UaG
})
for (j = 1; j <= r - mid; j++) { H}vq2 |MN
temp[r - j + 1] = data[j + mid]; SA!P:Q?h
} P3Ocfpf Bp
int a = temp[l]; ^26vP7
int b = temp[r]; 6_}&
WjU'
for (i = l, j = r, k = l; k <= r; k++) { 4Cm+xAXG
if (a < b) { |T3F:],`
data[k] = temp[i++]; m%7T ~
a = temp; I8M^]+c
} else { (@X].oM^y
data[k] = temp[j--]; TuR.'kE@
b = temp[j]; `,~8(rIM
} "0Ca;hSLM2
} IHC
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} HFlMx
^I! u H1G
/** 1!/WC.0
* @param data bMU0h,|]
* @param l : ZehBu
* @param i *{TB<^ *
*/ |&wwH&<[z
private void insertSort(int[] data, int start, int len) { ol#|
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for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); tg5G`P5PJ
} ~IQ3B$4H&
} {XR3L'X
} NW?.Ge.!P
} -0P(lkylf
<+3-(&
堆排序: N./l\NtZ
:^bjn3b
package org.rut.util.algorithm.support; a]NH >d
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import org.rut.util.algorithm.SortUtil; i?^lEqy[
V
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/** J2Y
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* @author treeroot iC(&U YL
* @since 2006-2-2 <e)u8+(
* @version 1.0 Wy:xiP
*/ MVDEVq0
public class HeapSort implements SortUtil.Sort{ k
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0Tp,b (;n
/* (non-Javadoc) C]dK/~Z#r
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A4Sb(X|j
*/ ~3'}^V\
public void sort(int[] data) { crvq]J5
MaxHeap h=new MaxHeap(); <?h,;]U
h.init(data); dAba'|Y
for(int i=0;i h.remove(); lJ>OuSd
System.arraycopy(h.queue,1,data,0,data.length); n=_jmR1
} v#Xl
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private static class MaxHeap{ ^s.necg0
4arqlzlo
void init(int[] data){ 5oOF|IYi
this.queue=new int[data.length+1]; I
l2`c}9
for(int i=0;i queue[++size]=data; ~Y)h[
fixUp(size); t?l0L1;
} ))9w)A@
} md
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I_"KhBM
private int size=0; 8slOB>2#Y
,Y+J.8.H
private int[] queue; E!rgR5Bd
JbR;E`8
public int get() { XSBh+)0Ww
return queue[1]; {BI5lvx:
} F'Lav?^
_]aA58,j
public void remove() { AhA4IOG`.
SortUtil.swap(queue,1,size--); hH.X_X?d%
fixDown(1); D #Ku5~j
} Ew, 1*WK!
file://fixdown 6C@W6DR3N
private void fixDown(int k) { 8n2MZ9p]
int j; u#bd*(
while ((j = k << 1) <= size) { gR#lRA/
if (j < size %26amp;%26amp; queue[j] j++; %D_pTD\
if (queue[k]>queue[j]) file://不用交换 }eLnTi{
break; #)BbW40f6
SortUtil.swap(queue,j,k); 5`tMHgQO
k = j; /\-iV)h1@
} 'h*^;3@*
} .5AyB9a%&
private void fixUp(int k) { J{w[vcf
while (k > 1) { xtq='s8e
int j = k >> 1; P\k5%
if (queue[j]>queue[k]) \:/~IZdzF
break; HAca'!p
SortUtil.swap(queue,j,k); UB9n7L(@c
k = j; Ms61FmA4
} ZvVrbj&
} ;;{!wA+"D
0D.qc8/V4.
} l!7O2Ai5
&i{>Li
} 3*<?'O7I0
iVdY\+N!<
SortUtil: "54t7
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package org.rut.util.algorithm; 6 {j}Z*)m
:*<UCn""
import org.rut.util.algorithm.support.BubbleSort; 9vL n#_
import org.rut.util.algorithm.support.HeapSort; z]d2
rzV(_
import org.rut.util.algorithm.support.ImprovedMergeSort; Nk
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import org.rut.util.algorithm.support.ImprovedQuickSort; ~jOn)jBRZ
import org.rut.util.algorithm.support.InsertSort; OA?pBA
import org.rut.util.algorithm.support.MergeSort; 2leTEs5aK`
import org.rut.util.algorithm.support.QuickSort; kKlcK_b;
import org.rut.util.algorithm.support.SelectionSort; *=
;M',nx
import org.rut.util.algorithm.support.ShellSort; _X/`7!f
r!C#PiT}I
/** YYs/r
* @author treeroot W3~xjS"h
* @since 2006-2-2 xp68-&
* @version 1.0 *;u'W|"/~
*/ 8p0ZIrD%
public class SortUtil { QKVFH:"3
public final static int INSERT = 1; (fUpj^E)p
public final static int BUBBLE = 2; [G#PK5C
public final static int SELECTION = 3; [gE_\=FSKu
public final static int SHELL = 4; WJA0 `<~
public final static int QUICK = 5; 1[U`,(C1
public final static int IMPROVED_QUICK = 6; .W*" C
public final static int MERGE = 7; b,r{wrLe)
public final static int IMPROVED_MERGE = 8; XUK!1}
public final static int HEAP = 9; knb 9s`wR
UD6:X&Un
public static void sort(int[] data) { I/vQP+w O
sort(data, IMPROVED_QUICK); PYhRP00}M
} 2M`:/ shq
private static String[] name={ \#%1t
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" YQ
_]Jv k
}; -+)06BqF}
|Ym3.hz
private static Sort[] impl=new Sort[]{ umJ!j&(
new InsertSort(), zho$g9*
new BubbleSort(), ,)beK*Iw
new SelectionSort(), 8?z7!k]
new ShellSort(), Eb.k:8?Tn
new QuickSort(), aFf(m-
new ImprovedQuickSort(), Nfo`Q0\[P
new MergeSort(), 8Ts_;uId
new ImprovedMergeSort(), T-)lnrs^
new HeapSort() 1Ax{Y#<
}; \:Vm7Zg
d:&=|kKw
public static String toString(int algorithm){ U5!~@XjG>
return name[algorithm-1]; +>Xe_
} 2^f6@;=M
*{fL t
public static void sort(int[] data, int algorithm) { JK=0juv<E
impl[algorithm-1].sort(data); L,7+26XV"B
} o>Faq+@
@q/E)M?
public static interface Sort { "x~su?KiA
public void sort(int[] data); #[B]\HO
} zg+6<
.Sf
Yk @/+PE
public static void swap(int[] data, int i, int j) { 6t!PHA
int temp = data; <Y"h2#M "
data = data[j]; mR3-+dB/
data[j] = temp; 5!V%0EQqw
} q>5K:5
} NO'37d