Reverse an array : Array « Date Type « Android

1. Android
2. Date Type
3. Array

Reverse an array

  
//package org.anddev.andengine.util;

/**
 * (c) 2010 Nicolas Gramlich 
 * (c) 2011 Zynga Inc.
 * 
 * @author Nicolas Gramlich
 * @since 22:35:42 - 01.05.2011
 */
class ArrayUtils {

  public static void reverse(final byte[] pArray) {
    if (pArray == null) {
      return;
    }
    int i = 0;
    int j = pArray.length - 1;
    byte tmp;
    while (j > i) {
      tmp = pArray[j];
      pArray[j] = pArray[i];
      pArray[i] = tmp;
      j--;
      i++;
    }
  }

  public static void reverse(final short[] pArray) {
    if (pArray == null) {
      return;
    }
    int i = 0;
    int j = pArray.length - 1;
    short tmp;
    while (j > i) {
      tmp = pArray[j];
      pArray[j] = pArray[i];
      pArray[i] = tmp;
      j--;
      i++;
    }
  }

  public static void reverse(final int[] pArray) {
    if (pArray == null) {
      return;
    }
    int i = 0;
    int j = pArray.length - 1;
    int tmp;
    while (j > i) {
      tmp = pArray[j];
      pArray[j] = pArray[i];
      pArray[i] = tmp;
      j--;
      i++;
    }
  }

  public static void reverse(final long[] pArray) {
    if (pArray == null) {
      return;
    }
    int i = 0;
    int j = pArray.length - 1;
    long tmp;
    while (j > i) {
      tmp = pArray[j];
      pArray[j] = pArray[i];
      pArray[i] = tmp;
      j--;
      i++;
    }
  }

  public static void reverse(final float[] pArray) {
    if (pArray == null) {
      return;
    }
    int i = 0;
    int j = pArray.length - 1;
    float tmp;
    while (j > i) {
      tmp = pArray[j];
      pArray[j] = pArray[i];
      pArray[i] = tmp;
      j--;
      i++;
    }
  }

  public static void reverse(final double[] pArray) {
    if (pArray == null) {
      return;
    }
    int i = 0;
    int j = pArray.length - 1;
    double tmp;
    while (j > i) {
      tmp = pArray[j];
      pArray[j] = pArray[i];
      pArray[i] = tmp;
      j--;
      i++;
    }
  }

  public static void reverse(final Object[] pArray) {
    if (pArray == null) {
      return;
    }
    int i = 0;
    int j = pArray.length - 1;
    Object tmp;
    while (j > i) {
      tmp = pArray[j];
      pArray[j] = pArray[i];
      pArray[i] = tmp;
      j--;
      i++;
    }
  }
  
  public static boolean equals(final byte[] pArrayA, final int pOffsetA, final byte[] pArrayB, final int pOffsetB, final int pLength) {
    final int lastIndexA = pOffsetA + pLength;
    if(lastIndexA > pArrayA.length) {
      throw new ArrayIndexOutOfBoundsException(pArrayA.length);
    }
    
    final int lastIndexB = pOffsetB + pLength;
    if(lastIndexB > pArrayB.length) {
      throw new ArrayIndexOutOfBoundsException(pArrayB.length);
    }
    
    for(int a = pOffsetA, b = pOffsetB; a < lastIndexA; a++, b++) {
      if(pArrayA[a] != pArrayB[b]) {
        return false;
      }
    }
    
    return true;
  }

}

   
    
  

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