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。 7&:gvhw
插入排序: {08UBnR
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package org.rut.util.algorithm.support; s8{3~ Hv
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import org.rut.util.algorithm.SortUtil; -#Yg B5
/** 9O?.0L
* @author treeroot Ngu+V
* @since 2006-2-2 ^]Lr_k
* @version 1.0 G#Nh)ff
*/ . CLiv
public class InsertSort implements SortUtil.Sort{ =:1f
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/* (non-Javadoc) j?+FS`a!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4bhm1Q
*/ *r?g&Vw$m
public void sort(int[] data) { 1*[h$Z&H?
int temp; TPq5"mco
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); b3H~a2"d
} NV9D;g$Y
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冒泡排序: 8K]fw{-$L
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package org.rut.util.algorithm.support; pYI`5B4
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import org.rut.util.algorithm.SortUtil; (pH13qU5
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/** `w@fxv
* @author treeroot )mB+#T<k-
* @since 2006-2-2 PX(.bP2^Lq
* @version 1.0 }v;@1[.B
*/ c*1t<OAS~
public class BubbleSort implements SortUtil.Sort{ %QVX1\>]
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/* (non-Javadoc) +su>0'a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z\oq b)a
*/ "7JO~T+v
public void sort(int[] data) { S@z$,}Yc`<
int temp; d\3L.5]X
for(int i=0;i for(int j=data.length-1;j>i;j--){ jLI(Z
if(data[j] SortUtil.swap(data,j,j-1); 6;l{9cRgc
} Jv1.Yz
} dum! AO
} YCj"^RC^
} ,6}HAC $
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} 0J7[n*~
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选择排序: Fm`hFBKW
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package org.rut.util.algorithm.support; pOyM/L
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import org.rut.util.algorithm.SortUtil; ot;j6eAH~E
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/** DFwkd/3"
* @author treeroot F8Rd#^9PD
* @since 2006-2-2 c;&m}ImLe.
* @version 1.0 Pc nr
*/ /wljbb/s
public class SelectionSort implements SortUtil.Sort { G+=euK2]
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/* ?#<Fxme
* (non-Javadoc) y"]?TEd
* I+!w9o2nZ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e/6WhFN#
*/ @rRBo:0%
public void sort(int[] data) { GLcf'$l
int temp; d?oupW}uu
for (int i = 0; i < data.length; i++) { 0 oEw1!cY
int lowIndex = i; y/$WjFj3"
for (int j = data.length - 1; j > i; j--) { !qV{OXdrB
if (data[j] < data[lowIndex]) { "
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lowIndex = j; m[LIM}Gu
} rG:IS=
} *%:p01&+
SortUtil.swap(data,i,lowIndex); z.
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} YKJk)%;+w
} <dV|N$WV
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} 2L[/.|
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Shell排序: k v,'9z
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package org.rut.util.algorithm.support; e-ljwCD
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import org.rut.util.algorithm.SortUtil; ecA:y!N
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/** mv/'H^"[_
* @author treeroot jF<Y,(C\
* @since 2006-2-2 rqxoqc Z
* @version 1.0 m>x.4aO1
*/ \;&j;"c,W
public class ShellSort implements SortUtil.Sort{ :2^%^3+V
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/* (non-Javadoc) '\(Us^Ug
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y"#o9"&>&
*/ %Nwap~=H;
public void sort(int[] data) { S)iv k x
for(int i=data.length/2;i>2;i/=2){ 3Nd&*QSV
for(int j=0;j insertSort(data,j,i); SpdQ<]
} EFW'D=&h8
} <ap%+(!I
insertSort(data,0,1); i~@e}=
} y1p^
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/** [c+[t3dz
* @param data Y#V`i K
* @param j jX-v9eaA
* @param i 3!_y@sWx
*/ elG<\[
private void insertSort(int[] data, int start, int inc) { U ; JZN
int temp; - jfZLO4
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); n[|&nv6x
} 1#qyD3K
} VU J*\Sg
} Ck%nNy29
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} ^ b{0|:
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快速排序: &p8b4y_
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package org.rut.util.algorithm.support; \rn:/
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import org.rut.util.algorithm.SortUtil; TppR \[4]
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/** 26B]b{Iz{
* @author treeroot =H%c/Jty
* @since 2006-2-2 g,h'K
* @version 1.0 - Ob'/d5&
*/ i^eU!^KF
public class QuickSort implements SortUtil.Sort{ z|^:1ov,
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/* (non-Javadoc) \HF|&@}hU
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *v
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*/ u27K
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public void sort(int[] data) { O68/Hf1W
quickSort(data,0,data.length-1); ,j>A[e&.
} 3.Z}2F]
private void quickSort(int[] data,int i,int j){ @d:TAwOI'
int pivotIndex=(i+j)/2; #!wu}nDu
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SortUtil.swap(data,pivotIndex,j); ~2+J]8@I]
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int k=partition(data,i-1,j,data[j]); JWoNP/v6
SortUtil.swap(data,k,j); bW\OKI1
if((k-i)>1) quickSort(data,i,k-1); (S$ziV
if((j-k)>1) quickSort(data,k+1,j); ghq [oK
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} Q '/v-bd?o
/** /FJ )gQYA
* @param data /Fy2ZYs,`8
* @param i b-ZC~#?|b
* @param j ^&F8NEb=2>
* @return Yj)H!Cp.xD
*/ o *)>aw
private int partition(int[] data, int l, int r,int pivot) { L}5nq@Uu)
do{ .xo#rt9_"=
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); LfOXgn\
SortUtil.swap(data,l,r); !LB#K?I
} ;)].Dj9
while(l SortUtil.swap(data,l,r); G`8i{3:
return l; m%hI@'
} nb::,
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}
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改进后的快速排序: mj:X'BVA
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package org.rut.util.algorithm.support; K,(37Id'
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import org.rut.util.algorithm.SortUtil; 1(t{)Z<
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/** "I+71Ce
* @author treeroot *gF8"0s
* @since 2006-2-2 {ZQ|Ydpk
* @version 1.0 ZmU7 tK
*/ D32~>J.F
public class ImprovedQuickSort implements SortUtil.Sort { '*gY45yT`
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private static int MAX_STACK_SIZE=4096; K,_d/(T4
private static int THRESHOLD=10; 6/e+=W2
/* (non-Javadoc) zr#n^?m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?=$=c8xw
*/ .rpKSf.
public void sort(int[] data) { T6_LiB@
int[] stack=new int[MAX_STACK_SIZE]; ${ fJ]
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int top=-1; +9Vp<(
int pivot; 86+nFk
int pivotIndex,l,r; qcpAjjK
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stack[++top]=0; JR>v
stack[++top]=data.length-1; /DLgE7iU%
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while(top>0){ mtfEK3?2*
int j=stack[top--]; U&x)Q
int i=stack[top--]; ^q{=mf`
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pivotIndex=(i+j)/2; wX?<o
pivot=data[pivotIndex]; &\K p_ AR
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SortUtil.swap(data,pivotIndex,j); BuwJR
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file://partition N-C=O
l=i-1; ;<^t)8E
r=j; eD<Kk 4){
do{ -bJC+Yn
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Zq[aC0%+
SortUtil.swap(data,l,r); tUzef
} [OTZ"XQLI
while(l SortUtil.swap(data,l,r); H!6nIS9yxt
SortUtil.swap(data,l,j); V'n4iM
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if((l-i)>THRESHOLD){ (Qf"|3R4
stack[++top]=i; Fh[Gq
stack[++top]=l-1; {[W [S@+
} UB5X2uBv
if((j-l)>THRESHOLD){ uPZ<hG#K
stack[++top]=l+1; 78o>UWA:
stack[++top]=j; Fkq;Q
} 0{0A,;b
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