Problem:
Given an array of ints, return true if .. 1, 2, 3, .. appears in the array somewhere.
array123({1, 1, 2, 3, 1}) → true
array123({1, 1, 2, 4, 1}) → false
array123({1, 1, 2, 1, 2, 3}) → true
Solution:
public boolean array123(int[] nums) {
for (int i=0; i < (nums.length-2); i++) {
if (nums[i]==1 && nums[i+1]==2 && nums[i+2]==3) return true;
}
return false;
}
public boolean array123(int[] nums) {
ReplyDeleteboolean osh=false;
for (int i = 0; i <nums.length-2 ; i++) {
if(nums[i]==1&&nums[i+1]==2&&nums[i+2]==3){
osh=true;}
}
return osh;
}
With Java Stream
ReplyDeletepublic boolean array123(int[] nums) {
return java.util.stream.IntStream.range(0, nums.length - 2)
.anyMatch(i -> nums[i] == 1 && nums[i + 1] == 2 && nums[i + 2] == 3);
}