WEBVTT 00:00.600 --> 00:04.940 So one thing you can do with loops is nest them. 00:05.000 --> 00:08.000 So let's see an example of what I mean. 00:08.000 --> 00:13.790 So let's say we have contest in Max goes to five 00:16.520 --> 00:19.360 and we say. 00:19.820 --> 00:28.240 He calls to 1 is less than or equal to Max an. 00:28.610 --> 00:29.660 Plus plus 00:32.490 --> 00:34.700 and then we say zero out 00:39.520 --> 00:42.220 interation is 00:45.180 --> 00:45.660 I 00:52.460 --> 00:57.920 and then we say 4 inch J goes to 1. 00:57.950 --> 01:00.520 So we're not using or using j. 01:00.640 --> 01:11.270 Because I I could be used inside of this in J 4 but we don't want that to happen so we have to use a 01:11.270 --> 01:14.270 different variable here. 01:14.860 --> 01:26.110 Less than or equal to max Juniperus us and same thing iteration J. 01:27.610 --> 01:30.130 Is just 01:33.060 --> 01:37.660 and run this and see what it outputs. 01:37.710 --> 01:40.940 So you see Aerschot I is equal to 1. 01:41.220 --> 01:57.490 And then you say that he see iteration J from 1 to 5 K so it only did 1 iteration I 4 5 iteration James 01:59.060 --> 02:02.780 or 5 iteration js for one iteration. 02:03.380 --> 02:04.600 That makes sense. 02:05.060 --> 02:16.280 And then so see here iteration equals 2 and we do iteration J 2 from 1 to 5. 02:16.320 --> 02:22.050 And the same thing with three went to 5 for J eyes for 1 to 5. 02:22.110 --> 02:23.030 J. 02:23.320 --> 02:28.340 Narration 5 in 1 to 5 for J. 02:28.350 --> 02:35.470 So you see we do five iterations of J for each iteration of I. 02:35.550 --> 02:39.270 So you may ask why is this useful. 02:39.270 --> 02:45.340 Well we'll see later for much harder problems. 02:45.870 --> 02:54.300 Having multiple loops really does help and really solves some much more interesting problems than just 02:54.360 --> 03:03.740 having sort of a linear non nested loop and I'll show you some examples of that in the practice problems. 03:03.750 --> 03:05.070 Lecture this section.