Array related Util Methods

Author: m0a07xh

util/ArrayUtil.java

@@ -45,6 +45,26 @@ public static int[] constructRandomUniqueElementsArray() {
  return set.stream().mapToInt(Integer::intValue).toArray();
  }
 
+ /**
+ * Generate integer array of size range and each element between 1 to range
+ * 
+ * @param range elements value will be between 1 to range
+ * @return int array
+ */
+ public static int[] constructArrayWithinRange(int range) {
+ Set<Integer> set = new HashSet<Integer>();
+ int[] arr = new int[range];
+ int index = 0;
+ while (index < range) {
+ int data = AlgoUtils.random(range) + 1;
+ if (!set.contains(data)) {
+ arr[index++] = data;
+ set.add(data);
+ }
+ }
+ return arr;
+ }
+
  /**
  * Generate random integer array of size between 5 and 10
  * and value will be in range of 0 to 15