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public String clockwise(int[] numbers) {
- MoonZ.Wu April 23, 2013int len = numbers.length;
int n = (int)Math.sqrt(len);
int[] orderedNumbers = new int[len];
for (int i=0; i<len; i++) {
int index = getIndex(i, n);
orderedNumbers[index] = numbers[i];
}
return generateString(orderedNumbers);
}
private String generateString(int[] orderedNumbers) {
StringBuilder sb = new StringBuilder();
for (int number : orderedNumbers) {
sb.append(number).append(" ");
}
return sb.toString().trim();
}
private int getIndex(int i, int n) {
int newRow = i%n;
int currentRow = i/n;
int newColumn = Math.abs(currentRow - n + 1);
return newRow*n + newColumn;
}