var nTask = 1; var resOut; var tskDescr; window.onload = function() { tskDescr = document.getElementById("desc"); tskDescr.innerHTML = "1\n22\n333\n4444\n55555\n..."; resOut = document.getElementById("result"); document.getElementById("exec").addEventListener("click",exec); document.getElementById("uSel").addEventListener("change",change); } function change() { nTask = parseInt(document.getElementById("uSel").value); switch(nTask) { case 1: tskDescr.innerHTML = "1\n22\n333\n4444\n55555\n..."; break; case 2: tskDescr.innerHTML = "1\n12\n123\n1234\n12345\n..."; break; case 3: tskDescr.innerHTML = "1\n13\n135\n1357\n13579\n..."; break; case 4: tskDescr.innerHTML = "0\n01\n010\n0101\n01010\n..."; break; } resOut.innerHTML = ""; } function exec() { let N = parseInt(document.getElementById("size").value); let chkRev = document.getElementById("reverse"); switch(nTask) { case 1: if(chkRev.checked) task1r(N); else task1(N); break; case 2: if(chkRev.checked) task2r(N); else task2(N); break; case 3: if(chkRev.checked) task3r(N); else task3(N); break; case 4: if(chkRev.checked) task4r(N); else task4(N); break; } } function task1(N) { let tmpStr = ""; for(i = 1; i <= N; i++) { for(j = 1; j <= i; j++) { tmpStr = tmpStr + i.toString(); } tmpStr = tmpStr + "\n"; } resOut.innerHTML = tmpStr; } function task1r(N) { let tmpStr = ""; for(i = N; i >= 1; i--) { for(j = 1; j <= i; j++) { tmpStr = tmpStr + i.toString(); } tmpStr = tmpStr + "\n"; } resOut.innerHTML = tmpStr; } function task2(N) { let tmpStr = ""; for(i = 1; i <= N; i++) { for(j = 1; j <= i; j++) { tmpStr = tmpStr + j.toString(); } tmpStr = tmpStr + "\n"; } resOut.innerHTML = tmpStr; } function task2r(N) { let tmpStr = ""; for(i = N; i >= 1; i--) { for(j = 1; j <= i; j++) { tmpStr = tmpStr + j.toString(); } tmpStr = tmpStr + "\n"; } resOut.innerHTML = tmpStr; } function task3(N) { let tmpStr = ""; let count; for(i = 1; i <= N; i++) { count = 1; for(j = 1; j <= i; j++) { tmpStr = tmpStr + count.toString(); count+=2; } tmpStr = tmpStr + "\n"; } resOut.innerHTML = tmpStr; } function task3r(N) { let tmpStr = ""; let count; for(i = N; i >= 1; i--) { count = 1; for(j = 1; j <= i; j++) { tmpStr = tmpStr + count.toString(); count+=2; } tmpStr = tmpStr + "\n"; } resOut.innerHTML = tmpStr; } function task4(N) { let tmpStr = ""; for(i = 1; i <= N; i++) { for(j = 1; j <= i; j++) { if(j%2 == 1) tmpStr = tmpStr + "0"; else tmpStr = tmpStr + "1"; } tmpStr = tmpStr + "\n"; } resOut.innerHTML = tmpStr; } function task4r(N) { let tmpStr = ""; for(i = N; i >= 1; i--) { for(j = 1; j <= i; j++) { if(j%2 == 1) tmpStr = tmpStr + "0"; else tmpStr = tmpStr + "1"; } tmpStr = tmpStr + "\n"; } resOut.innerHTML = tmpStr; }

Pattern 1(old challenge)